CN104214857A - Serialized direct evaporation type ice-water cold accumulation double-cold-source air conditioning system - Google Patents

Serialized direct evaporation type ice-water cold accumulation double-cold-source air conditioning system Download PDF

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CN104214857A
CN104214857A CN201410359231.1A CN201410359231A CN104214857A CN 104214857 A CN104214857 A CN 104214857A CN 201410359231 A CN201410359231 A CN 201410359231A CN 104214857 A CN104214857 A CN 104214857A
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ice
air
cold
temperature
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王天祥
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ET POWER Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02E60/14Thermal energy storage

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Abstract

The invention relates to a serialized direct evaporation type ice-water cold accumulation double-cold-source air conditioning system which is used for refrigerating by a high temperature type water-cooled compression condensing unit by utilizing low-price electric power in the electricity trough period at night; the high-pressure refrigerant liquid is directly sent into an evaporator after being throttled for evaporative refrigeration by applying the 'throttling refrigeration effect' principle of 'Joule-Thomson' law, so that apparent heat and latent heat of water in an ice storage tank are absorbed, and the aims of ice making and cold accumulation are achieved. The system comprises a double-temperature ice storage system, a temperature and humidity separately-control air conditioning terminal system, a PLC (programmable logic controller) intelligent control system, etc. A new concept that partial load ice-making cold accumulation is replaced by full load ice storage is applied; three technical innovation measures including adopting a 8-18 DEG C high-temperature difference water supply mode, adopting a temperature and humidity double-control air conditioner running mode and taking the high temperature type water-cooled compression condensing unit as an ice storage cold source mode are adopted, wherein the refrigerating capacity of the high temperature type water-cooled compression condensing unit is higher than the rated refrigerating capacity by 25-30%. The cold storage capacity of the double-cold source ice storage tank is increased by more than 24-51% compared with that of the existing ice storage air conditioning system. In the daytime, the system can provide 8-14 hours of hot and wet load for an air conditioning system, thus reducing operating cost by more than 85%; the system can be widely applied to or used for replacing various air conditioning systems, and is a radical innovation and technical revolution of the ice storage air conditioning system worldwide.

Description

The two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage
Technical field
The two cold source air conditioning system of a kind of seriation direct-evaporating type ice-water cold storage, one utilizes electricity consumption at night paddy phase electric power at a low price, start high temperature modification water-cooled Condensing units refrigeration, " throttling refrigeration effect " principle of application " Joule-Thomson " law, directly send after high temperature, high pressure cooling medium liquid body segment stream into evaporation in evaporimeter, absorb sensible heat and the latent heat of ice-reserving trough inner water, the air-conditioning system of ice making, cold-storage.Ice Storage Tank arranges the low-temperature receiver of two different temperatures, a low-temperature receiver, in large temperature difference cooling mode, is the dry type air conditioner end equipment in humiture sub-control air conditioning terminal system, provides the chilled water of 8 DEG C ~ 18 DEG C, eliminate complete sensible heat load and a small amount of latent heat load, cooling process is carried out to room air; Another one low-temperature receiver, the chilled water of 5 DEG C ~ 7 DEG C, sends into new wind devices, to new wind degree of depth dehumidifying (mechanical dew point 12 DEG C), eliminates whole latent heat load and part sensible heat load, realizes indoor air dehumidification.Native system is made up of two temperature ice storage system and humiture sub-control air conditioning terminal system, PLC intelligence control system etc.
The two cold source air conditioning system , Yi Full load ice-reserving of seriation direct-evaporating type ice-water cold storage replaces the new concept of sub-load ice-reserving, has surmounted now all in the world ice-storage air-conditioning systems comprehensively.Have employed three technology innovative measure: (1), increase Ice Storage Tank volume 30%, the pattern (2) adopting 8 DEG C ~ 18 DEG C large temperature difference to supply water adopts humiture dual control air conditioning operating mode (3), selects the high temperature modification water-cooled Condensing units of larger than specified refrigerating capacity 25 ~ 30% as ice-storage cool source module.The cold storage capacity of two low-temperature receiver Ice Storage Tank is made to increase by more than 24 ~ 51% than conventional cold storage capacity that is dynamic, static, direct-evaporation-type ice-storage air-conditioning system.For air-conditioning system on daytime provides the refrigeration duty of 8 ~ 14 hours, daytime does not open the equipment such as refrigeration host computer, cooling water pump, cooling tower, only opens chilled water pump cooling, saving operation of air conditioner expense on daytime more than 85%.
The two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage, do not use Double-working-condition refrigeration host computer, do not use eth.glycol and eg pump, do not use melt ice on coil, adopt the ice making of direct-evaporation-type evaporimeter, cold-storage, make ice-reserving air conditioning equipment first cost reduce by more than 45%, cost increases about 25 ~ 30% than conventional central air-conditioning system, and the investment payback time was less than 2 years.
The use of PLC intelligence control system, makes two warm ice storage system and humiture sub-control air conditioning terminal system all run under high energy efficiency ratio situation.Temperature, humidity control respectively, improve the control accuracy of temperature, humidity, make the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage be tied to form as except comfort air conditioning system, the air-conditioning system that technological air conditioning, industrial air-conditioning, clean air conditioner are all suitable for.All air-conditioning systems are in the world made to simplify, unitize.
The two cold source air conditioning system system , Yi Full load cold storage of ice making of seriation direct-evaporating type ice-water cold storage replaces the new concept of sub-load cold storage of ice making, has surmounted now all in the world ice-storage air-conditioning systems comprehensively.A kind of novel ice conserve cold, the comprehensive cold supply system of water cold storage.Incorporate humiture sub-control air-conditioning system, the large temperature difference for the various advantages of cold air conditioning system, direct-evaporation-type ice-storage air-conditioning system, water cool-storage technology system, advantage and the innovative ice-storage air-conditioning system invented.The cost of investment that can reduce ice-chilling air conditioning system can reduce again the operating cost of air-conditioning system, and power consumption is low, applied widely, is the worthy of the name innovative energy-storage air conditioner system not only having economized on electricity but also saved money.
Background technology
Day by day reduce in global warming, world's non-renewable resources, environmental pollution more and more serious, electricity shortage has become one of major obstacle of economic development.Especially various air-conditioning system power consumption is large, and service time overlaps with the electricity consumption peak phase again, is typical power consumption rich and influential family.General air-conditioning system power consumption account for office building power consumption 65%, account for market, hotel's power consumption 60%, account for enterprise's industrial use, technological air conditioning power consumption about 50%.So air-conditioning system power consumption becomes electricity shortage one of the main reasons on daily especially daytime.Reduce air-conditioning system power consumption, be one of approach the most effectively solving energy shortage problem as far as possible.
For many years, adopt energy-storage air conditioner system and ice conserve cold, water cold storage, eutectic-salt cool-storage to solve this power consumption difficult problem in the world always, utilize valley period power power refrigeration at night, ice making, cold is stored in cold water, ice and eutectic salts, second day daytime released cold quantity, for air-conditioning system provides part refrigeration duty, reduce air conditioner refrigerating main frame, water pump operation number of units and running time, especially in the electricity consumption peak phase, reduce power load, reach the object of peak load shifting.
World's energy accumulation air conditioner technology is long-standing, and ice storage technology is most widely used.Water cold storage because be sensible heat cold-storage, although initial cost is fewer than ice conserve cold, water storage pool or cold-storage water pot bulky, floor space and the position that takes up room large, development is restricted; Eutectic salt cold-storage is due to high cost, and development is also restricted.
Ice Thermal Storage Air-Conditioning Technology is at home and abroad applied for many years, is a kind of cool storage air conditioning technology of maturation.Ice conserve cold divides again static ice conserve cold and dynamic ice cold-storage two kinds of forms, has again direct-evaporation-type ice-storage air-conditioning system to occur in recent years.But no matter which kind of ice conserve cold mode is all to shift premised on air-conditioning sub-load on daytime, utilizes paddy phase at night electric power at a low price, ice making, cold-storage, reduce electricity consumption on daytime peak phase idle call electricity.Up to the present, neither one ice-chilling air conditioning system, can within electricity consumption period paddy phase 8 hours nights cold storage of ice making, for air-conditioning system on daytime provides whole hot humidity load, present all ice-storage air-conditioning systems all adopt mode ice making, the cold-storage of sub-load cold storage of ice making, and ice-storage rate is all no more than 55%, and most economical cold storage of ice making amount is 35 ~ 50% of the wet total load of air-conditioning system heat, if more than 50%, payoff period was more than more than 3 years.Then first cost is high, and payoff period is longer, just loses the meaning and value of ice storage air conditioner.
Common static ice conserve cold and dynamic ice cold-storage air-conditioning system, the equipment such as Double-working-condition main frame, ethylene glycol and eg pump, melt ice on coil, Ice Storage Tank that be unable to do without comes ice making, cold-storage.Double-working-condition refrigeration host computer makes refrigerant under the condition of evaporating temperature lower than-7 DEG C, the freezing ethylene glycol solution of-4.5 DEG C ~-5 DEG C is produced by evaporimeter, spent glycol is pumped into the melt ice on coil in Ice Storage Tank again, by coil pipe tube wall cold passed to the water in Ice Storage Tank, make water discharge sensible heat and latent heat freezes.This cold storage of ice making process, need in melt ice on coil, to utilize tube wall to let cool two diabatic processes through: Double-working-condition refrigeration host computer evaporator refrigeration to ethylene glycol cooling and ethylene glycol just to complete, greatly reduce the Energy Efficiency Ratio (COP) of Double-working-condition refrigeration host computer, so the cooling condition Energy Efficiency Ratio (COP) of Double-working-condition refrigeration host computer is generally no more than 4.2; The direct-evaporation-type ice-storage air-conditioning system occurred in recent years, although eliminated the mode that the equipment such as Double-working-condition main frame, ethylene glycol and eg pump, melt ice on coil, Ice Storage Tank comes ice making, cold-storage, but, still with the traditional pattern ice making of ice storage air conditioner, cold-storage, there is no too large breakthrough.In addition, all ice-storage air-conditioning systems all need to be equipped with single operating mode air conditioner refrigerating main frame as base load refrigeration host computer, run simultaneously, realize airborne main frame and Ice Storage Tank air conditioning operational mode with Ice Storage Tank discharging cold course.The refrigeration duty of all air-conditioning systems, all needs airborne main frame and Ice Storage Tank shared.The supply water temperature of chilled water is all between 5 DEG C ~ 7 DEG C, and return water temperature is 12 DEG C, does not re-use higher than the chilled water of 7 DEG C, and this just makes ice-storage air-conditioning system service efficiency and fractional energy savings have a greatly reduced quality.
In running, often there is the phenomenons such as the ice-melt of cooling initial stage is difficult, chilled water supplies, return pipe ice is stifled, water-supply shortages, current are not smooth, have a strong impact on air-conditioning cooling initial stage refrigeration in the direct-evaporation-type ice-storage air-conditioning system in recent years occurred.
Melt ice on coil and the Ice Storage Tank of common static ice conserve cold and the use of dynamic ice cold-storage air-conditioning system are expensive, substantially about 450 yuan/standard ton, ice-chilling air conditioning system first cost is remained high, payoff period is long, even if when peak-and-valley prices 4: 1, payoff period is all more than more than 3 years.
Air-conditioning system total load comprises heat, wet two large loads.Wherein, new rheumatism (latent heat) load duty adjusts 30 ~ 50% of total load, and air conditioner heat load accounts for about 50 ~ 70%.Existing ice-storage air-conditioning system, owing to using temperature and humidity in single air conditioning end-equipment control room, there is epidemic disaster coupling control problem, cannot adapt to the change of air conditioning area heat moisture ratio, cause Indoor Temperature, moisture fluctuation large, the air quality of air-conditioning is poor.Heat, the humidity load of air-conditioning system are born by same low-temperature receiver, be limited by the needs of system dehumidification, its low-temperature receiver generally adopts cryogenic vaporization systems (confession of evaporating temperature 3 DEG C ~ 5 DEG C, chilled water, return water temperature 5 DEG C ~ 7 DEG C/12 DEG C), and low-temperature receiver operating efficiency is general lower.Air conditioner cold water unit eer (COP) is general between 3.5 ~ 5.8, causes the waste on energy grad.
More than that all ice-storage air-conditioning systems comprise the insoluble problem of direct-evaporation-type ice-storage air-conditioning system in recent years occurred in the world.
The two cold source air conditioning system , Yi Full load cold storage of ice making of seriation direct-evaporating type ice-water cold storage replaces the new concept of sub-load cold storage of ice making, has surmounted now all in the world ice-storage air-conditioning systems comprehensively.For conventional ice conserve cold and these problems of direct evaporation ice cold accumulation air conditioner system, have employed three technology innovative measure: (1), increase Ice Storage Tank volume 30%, the pattern (2) adopting 8 DEG C ~ 18 DEG C large temperature difference to supply water adopts humiture dual control air conditioning operating mode (3), selects the high temperature modification water-cooled Condensing units of larger than specified refrigerating capacity 25 ~ 30% as ice-storage cool source module.Maximum breakthrough and innovation have been done to conventional ice storage air conditioner technology.
Summary of the invention
The two cold source air conditioning system of a kind of seriation direct-evaporating type ice-water cold storage, one utilizes electricity consumption at night paddy phase electric power at a low price, start high temperature modification water-cooled Condensing units refrigeration, " throttling refrigeration effect " principle of application " Joule-Thomson " law, directly send after high temperature, high pressure cooling medium liquid body segment stream into evaporation in evaporimeter, absorb sensible heat and the latent heat of ice-reserving trough inner water, the air-conditioning system of ice making, cold-storage.A kind of humiture sub-control air-conditioning system, large temperature difference of incorporating is for the various advantages of cold air conditioning system, direct-evaporation-type ice-storage air-conditioning system, water cool-storage technology system, advantage and the innovative ice-storage air-conditioning system invented.Yi Full load cold storage of ice making provides whole hot humidity load to be theory for air-conditioning system on daytime, and the two cold source air conditioning system of a kind of seriation direct-evaporating type ice-water cold storage of invention.
The two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage, Ice Storage Tank arranges the low-temperature receiver of two different temperatures, a low-temperature receiver is in large temperature difference cooling mode, for the dry type air conditioner end equipment in humiture sub-control air conditioning terminal system, the chilled water of 8 DEG C ~ 18 DEG C is provided, eliminate complete sensible heat load and a small amount of latent heat load, cooling process is carried out to room air; Another one low-temperature receiver, the chilled water of 5 DEG C ~ 7 DEG C, sends into new wind devices, to new wind degree of depth dehumidifying (mechanical dew point 12 DEG C), eliminates whole latent heat load and part sensible heat load, realizes indoor air dehumidification.Native system is made up of two temperature ice storage system and humiture sub-control air conditioning terminal system, PLC intelligence control system etc.
Main purpose of the present invention, be to provide a kind of seriation direct-evaporating type ice-water cold storage two cold source air conditioning system, utilize two low-temperature receivers of two low-temperature receiver Ice Storage Tank, for air conditioner end equipment and new wind devices provide the chilled water of different temperatures, implement humiture dual control, reach the object of air-conditioning temperature-reducing and the dehumidifying of the new wind degree of depth; The ice-reserving storage cold of two low-temperature receiver Ice Storage Tank, can meet 8 ~ 14 hours air conditioner heat humidity load needs.Construction is used the most in the world, the most cheap energy-storage air conditioner system, not only economizes on electricity but also save money, and is energy-conservation, reduction of discharging utility service.
In order to achieve the above object, the technical solution adopted in the present invention is:
1, the two cold source air conditioning system of above-mentioned seriation direct-evaporating type ice-water cold storage, it is characterized in that, Ice Storage Tank is designed to two low-temperature receiver Ice Storage Tank, the chilled water that air conditioner end equipment and new wind devices provide different temperatures is respectively with two low-temperature receivers, implement the large temperature difference to supply water and humiture pattern of double controlling, reach the object improving refrigeration host computer Energy Efficiency Ratio (COP), meet air-conditioning temperature-reducing and new wind degree of depth dehumidifying.Wherein, air-conditioning Ice Storage Tank provides 8 DEG C ~ 18 DEG C chilled waters for dry type air conditioner end equipment, and in decontamination chamber, waste heat (sensible heat load) and the remaining humidity load of part, mainly carry out cooling to room air and process; New wind Ice Storage Tank provides 5 DEG C ~ 7 DEG C chilled waters for new wind devices, in decontamination chamber remaining wet (latent heat load), carries out degree of depth dehumidification treatments to the new wind in outdoor.Break present all ice-chilling air conditioning system Ice Storage Tank in the world and the water supply pattern of 5 DEG C ~ 7 DEG C of chilled waters is only provided, completed degree of depth dehumidifying and large temperature difference cooling process, reduce cooling load of air-condition demand.
Adopt large temperature difference cooling mode, chilled water supply water temperature scope expanded to 8 DEG C ~ 18 DEG C from 5 DEG C ~ 7 DEG C, adds Ice Storage Tank semen donors: air conditioning water when 0 DEG C ~ 7 DEG C temperature sections supply water, 1m 3air conditioning water to release cold be 101.2KW, when 8 DEG C ~ 18 DEG C temperature sections supply water, 1m 3air conditioning water to release cold be 12.8KW (sensible heat), increase the cold of 12.8KW ÷ 101.2KW × 100%=12.7%.Chilled water water temperature is increased to 18 DEG C, reduces with the temperature difference of environment, and the loss of refrigeration capacity in chilled water transmission & distribution process can reduce more than 30%.
Adopt humiture dual control air conditioning operating mode, chilled water and cooling water inflow are reduced, and chilled water system transmission & distribution energy consumption reduces more than 20%.Add ice making at night, cold-storage period, unit cooling system runs at low ambient temperatures, the operating ambient temperature of cooling tower is reduced to night about 20 DEG C by daytime 31.5 DEG C, cold in-water temperature can reduce by 6 DEG C ~ about 10 DEG C, cold in-water temperature often reduces by 1 DEG C, and unit refrigerating capacity about increases by 1.3%.This just makes the Energy Efficiency Ratio of high temperature modification water-cooled Condensing units (COP) bring up to 4.5 ~ 6 from 3.2 ~ 4, thus, about refrigeratory capacity can increase by 4.5 ÷ 3.2 × 100% ~ 6 ÷ 4 × 100%=14 ~ 15%, implement the large temperature difference of two low-temperature receivers to supply water and humiture pattern of double controlling, calculate by ice-reserving utilization rate 90%, the ice making of two temperature ice storage system, cold storage capacity increase (12.7%+15%) × 90%=24.9%.Because air conditioning area design day by time hot humidity load summation, only account for about 70 ~ 75% of high temperature modification water-cooled Condensing units oepration at full load total load, air-conditioning concurrent signatures is 0.75, so, high temperature modification water-cooled Condensing units is in the oepration at full load of 8 hours electricity consumption paddy phases, by the cold that ice making efficiency is 75% calculating, refrigeration unit cold storage of ice making, the air-conditioning system workload demand on 8 hours daytimes just can be met.
2, the two cold source air conditioning system of above-mentioned seriation direct-evaporating type ice-water cold storage, it is characterized in that, adopt the measure strengthening the specified refrigerating capacity 25 ~ 30% of high temperature modification water-cooled Condensing units, add the refrigerating capacity of 25 ~ 30%, ice making rate is brought up to about 75 ~ 85% from 50 ~ 55%, add after implementing the large temperature difference water supply of two low-temperature receivers and humiture pattern of double controlling, calculate by ice-reserving utilization rate 90%, ice making, cold storage capacity add altogether (12.7%+15%+30%) × 90%=51.9%.Because air conditioning area design day by time hot humidity load summation, only account for about 70 ~ 75% of high temperature modification water-cooled Condensing units oepration at full load total load, air-conditioning concurrent signatures is 0.75, so, strengthen the measure of the specified refrigerating capacity 25 ~ 30% of high temperature modification water-cooled Condensing units, just can meet the air-conditioning system workload demand on 13 ~ 14 hours daytimes.After adopting this measure, ice-storage air-conditioning system is specially adapted to commercial air-conditioner and without office building air-conditioning system of handling official business holiday.
Although the specified refrigerating capacity of high temperature modification water-cooled Condensing units adds 25 ~ 30% than calculated load, the installed capacity of the equipment such as cooling water pump, cooling tower will increase by 25 ~ 30% simultaneously, and the volume of Ice Storage Tank also will add 30%.But these equipment run under electricity consumption paddy phase at a low price power conditions, if peak phase, valley period power valency ratio are 4: 1, then increasing the electricity charge is 30% of valley period power valency, and this method of operation is economical.The increase of Ice Storage Tank volume, cost is still low by about 30 ~ 35% than the melt ice on coil of present all ice-storage air-conditioning systems, Ice Storage Tank.
3, the two cold source air conditioning system of above-mentioned seriation direct-evaporating type ice-water cold storage, it is characterized in that, two low-temperature receiver Ice Storage Tank is designed to 500MM the mounting distance between bottom base of evaporator and Ice Storage Tank, form the chilled water not ice field that 500MM is high, account for about 15% of Ice Storage Tank volume, this just can ensure two low-temperature receiver Ice Storage Tank cooling initial stage, has enough chilled water internal circulating loads.In order to prevent new wind Ice Storage Tank and the unexpected freeze over of air-conditioning Ice Storage Tank, or chilled water confession, return pipe and current water-locator freeze in Ice Storage Tank, two temperature Ice Storage Tank cooling initial stage can not provide the situation of chilled water to occur, at upper and lower part design and installation air conditioning water water supply bypass pipe, the air conditioning water water supply bypass pipe electric two-way valve of air-conditioning Ice Storage Tank, these bypass pipes are connected with air conditioning water return pipe, air conditioning water feed pipe respectively.At two temperature Ice Storage Tank cooling initial stage, when in PLC intelligence control system warning system display air-conditioning Ice Storage Tank freeze over or air-conditioning Ice Storage Tank, chilled water is for, return pipe and current water-locator freeze over, namely main control computer sends instruction, open air conditioning water water supply bypass pipe electric two-way valve, make in humiture sub-control air conditioning terminal system return pipe 18 DEG C ~ 22 DEG C (when night, air conditioner end equipment was stopped using, chilled water temperature go up) chilled water, enter the bottom ice-melt of air-conditioning Ice Storage Tank, turn on the aircondition subsequently and freeze water water pump and carry out short-circuit cycle.When the freezing water yield can meet the needs of humiture sub-control air conditioning terminal system, namely close air conditioning water water supply bypass pipe electric two-way valve, recover chilled water normal circulation.New wind chilled water feed pipe water flow switch and air conditioning water feed pipe water flow switch provide chilled-water flow information respectively, protect new wind chilled water water pump and air-conditioning to freeze the safety of water water pump, do not break down because of lack of water or water shortage or burn.New wind Ice Storage Tank, because ice storage amount is few, chilled water output is little, does not establish bypass pipe.
4, in the two cold source air conditioning system of above-mentioned seriation direct-evaporating type ice-water cold storage, it is characterized in that, air-conditioning Ice Storage Tank is provided with current water-locator.Backwater current water-locator is arranged on air-conditioning Ice Storage Tank top, and upward, chilled water backwater upwards flows out water distributing pore; Water supply current water-locator is arranged on cold air-conditioning Ice Storage Tank bottom, and down, chilled water sucks from below water distributing pore.The water velocity of current water-locator water distributing pore controls between 0.3 ~ 0.6M/S, and current water distributing pore diameter and quantity are determined by air-condition freezing discharge.The effect of current water-locator, that air-conditioning Ice Storage Tank is when 8 DEG C ~ 18 DEG C of large temperature difference coolings, mesolimnion is produced between air-conditioning high temperature chilled water backwater and cryogenic freezing water supply water, avoid chilled water backwater and chilled water water supply in air-conditioning Ice Storage Tank to produce gravity convection mixing because flow velocity is too fast, affect chilled water supply water temperature quality.
5, the two cold source air conditioning system of above-mentioned seriation direct-evaporating type ice-water cold storage, it is characterized in that, the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage, be there is ice conserve cold, innovative comprehensive energy-storage air conditioner system that two low-temperature receivers of water cold storage feature, temperature, humidity control respectively.Separately for new wind devices provides low-temperature receiver, accurately can control moisture removal, realize indoor air dehumidification, make the large raising of IAQ.Accurate control moisture removal and indoor temperature, make the scope of application of the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage more extensive, be applicable to comfort air conditioning system system, industrial air conditioning system and technological air conditioning system, clean air-conditioning system, constant temperature, constant wetting air conditioner system completely, become general air conditioning system in the world.
6, the two cold source air conditioning system of above-mentioned seriation direct-evaporating type ice-water cold storage, it is characterized in that, in described two low-temperature receiver ice storage systems, the organic coolant media of environment-friendly type of high temperature modification water-cooled Condensing units choice for use, Honeywell 245fa (hereinafter referred to as R245fa), the chemical name of R245fa is pentafluoropropane, and molecular formula is CF 3cH 2cHF 2, there is the characteristics such as macroscopic property is stable, the coefficient of heat conduction is high, operating temperature range extensively, is not burnt, do not damage the ozone layer.Can be used for the thermal power transfer of nature or industrial source, the evaporating temperature of native system R245fa is-5 DEG C.
7, the two cold source air conditioning system of above-mentioned seriation direct-evaporating type ice-water cold storage, is characterized in that, the two cold source air conditioning system of described seriation direct-evaporating type ice-water cold storage, choice for use PLC intelligence control system.Described intelligent PLC control system, comprising: the equipment such as main control computer, temperature sensor, pressure sensor, belt temperature sensor, dynamic power distribution cabinet, equipment control cabinet and unit, device.Be arranged on the belt temperature sensor in two low-temperature receiver Ice Storage Tank, detect that upper, middle and lower portion ice and chilled water in two low-temperature receiver Ice Storage Tank supply water, return water temperature, temperature information is transferred to main control computer, by calculating, analyzing, electric two-way valve, electronic proportional integral control valve and chilled water pump frequency converter on main control computer automatic control air conditioner chilled water, new wind chilled water confession, return pipe, regulate chilled-water flow size, meet dry type air conditioner end equipment and new wind devices load variations needs; By being arranged on temperature sensor on air-condition freezing water pump, new wind chilled water pump, cooling water pump, cooling tower and pressure sensor, detected temperatures and pressure information, temperature and pressure information transmission to main control computer, by calculating, analyzing, main control computer controls Frequency Converter Control chilled water, cooling water flow; By being arranged in humiture sub-control air conditioning terminal system, temperature sensor on the outlet of new wind devices and dry type air conditioner end equipment return air inlet, detect indoor temperature, humidity information, calculate through main control computer, analyze, main control computer controls the electronic proportional integral control valve on dry type air conditioner end equipment and the electric two-way valve on new wind devices, carries out chilled-water flow control; The indoor carbon dioxide concentration information detected by carbon dioxide indicator, is calculated through main control computer, analyzes, main control computer is opened exhaust blower, stops controlling, make deep carbon dioxide meet standard, ensure IAQ.PLC intelligence control system is implemented two low-temperature receiver Ice Storage Tank and epidemic disaster sub-control air conditioning terminal system overall monitor, realize two low-temperature receiver Ice Storage Tank cold-storage, let cool the automation conversion of operational mode, ensure that the refrigeration host computer of the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage, water pump, air conditioner end equipment, new wind devices etc. run under most high energy efficiency ratio situation, reduce air-conditioning power consumption and operating cost as far as possible.
The main control computer of PLC intelligence control system is connected with high temperature modification water-cooled Condensing units, dynamic power distribution cabinet, equipment control cabinet by communication interface, the service data of the two cold source air conditioning system of record series direct-evaporating type ice-water cold storage and running status.Intelligent PLC control system is also designed with warning and fault display system, and equipment control cabinet has touch-screen, once there be fault to occur, main control computer and touch-screen can show trouble location and character, prompting failure cause, and record and warning.Intelligent PLC control system can implement Long-distance Control and reset, and manipulation personnel also can inspection on the scene and reset.The thermometer that each position of system is installed and Pressure gauge, display real-time temperature and pressure, as directly observing, recording foundation.
After adopting said structure, the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage brings up to 4.5 ~ 6 high temperature modification water-cooled Condensing units Energy Efficiency Ratio (ORC) from 3.2 ~ 4, far away higher than Double-working-condition refrigeration host computer cooling condition Energy Efficiency Ratio (ORC) 4.1 ~ 4.2, save a large amount of power consumption.The two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage eliminates Double-working-condition refrigeration host computer and eg pump and ethylene glycol corollary apparatus, system is simple, practical, decrease equipment investment expense, reduce and build initial cost cost and operating cost, the melt ice on coil manufacturing cost of conventional ice-storage air-conditioning system is reduced more than 45 ~ 60%, becomes ice-storage air-conditioning system the most cheap in the world.The invention of the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage, the invention of great significance and innovation in non-renewable energy resources field, to thoroughly overturn all conventional ice-chilling air conditioning systems and direct-evaporation-type air-conditioning system cooling mode in Modern World, the dream that ice-chilling air conditioning system initial cost cost is low, economize on electricity saves money again is come true.
Accompanying drawing explanation
Accompanying drawing 1 is the two cold source air conditioning system schematic diagram of seriation direct-evaporating type ice-water cold storage.
Accompanying drawing 2 is two low-temperature receiver Ice Storage Tank system schematic
Accompanying drawing 3 is humiture sub-control air conditioning terminal system schematic
Detailed description of the invention
In order to make those skilled in the art better understand the present invention, accompanying drawing is hereby coordinated to describe in detail.As shown in Figure 1, the invention discloses the two cold source air conditioning system of a kind of seriation direct-evaporating type ice-water cold storage, incorporate humiture sub-control air-conditioning system, an innovative ice-storage air-conditioning system that the large temperature difference is invented for the various advantage of cold air conditioning system, direct-evaporation-type ice-storage air-conditioning system and advantage, a kind of low cost, low energy consumption, the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage that can extensively install and use.
The two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage, by: two temperature ice storage system and humiture sub-control air conditioning terminal system, PLC intelligence control system etc. form.Comprising: two temperature ice storage system 1, humiture sub-control air conditioning terminal system 2, PLC intelligence control system 3.Two temperature ice storage system 1 comprises: high temperature modification water-cooled Condensing units 1-1, refrigerant high-pressure transfusion tube 1-2, low pressure refrigerant muffler 1-3, flow controller 1-4, knockout 1-5, A/C evaporator 1-6, evaporator support 1-7, discharge 1-8, air-conditioning backwater current water-locator 1-9, air-conditioning water supply current water-locator 1-10, air-conditioning Ice Storage Tank 1-11, new wind Ice Storage Tank 1-12, new wind evaporimeter 1-13, new wind chilled water backwater bypass pipe 1-14, new wind chilled water backwater bypass pipe electric two-way valve 1-14-1, new wind chilled water return pipe 1-15, air conditioning water water supply bypass pipe 1-16, air conditioning water water supply bypass pipe electric two-way valve 1-16-1, new wind chilled water feed pipe 1-17, new wind chilled water feed pipe water flow switch 1-17-1, air conditioning water return pipe 1-18, air conditioning water feed pipe 1-19, new wind chilled water water pump 1-20, air-conditioning freezes water water pump 1-21, air conditioning water feed pipe water flow switch 1-22, new wind chilled water return pipe electronic proportional integral control valve 1-23, new wind chilled water feed pipe electric two-way valve 1-24, air conditioning water return pipe electronic proportional integral control valve 1-25, air conditioning water feed pipe electric two-way valve 1-26, two low-temperature receiver Ice Storage Tank 1-27, expansion tank 1-28, cooling water pump 1-29, cooling tower 1-30.Humiture sub-control air conditioning terminal system 2 comprises: the two cold source type air-conditioning cabinet 2-1 of combined type, new wind air inlet 2-2, fresh air cooler 2-3, air conditioner watch cooling 2-4, air-conditioning cabinet return air inlet 2-5, air-conditioning cabinet air outlet 2-6, fresh air cooler return pipe electronic proportional integral control valve 2-7, fresh air cooler feed pipe electric two-way valve 2-8, air conditioner watch cooling return pipe electronic proportional integral control valve 2-9, air conditioner watch cooling feed pipe electric two-way valve 2-10.PLC intelligence control system 3 comprises: main control computer 3-1, temperature sensor 3-2, pressure sensor 3-3, belt temperature sensor 3-4, dynamic power distribution cabinet 3-5, equipment control cabinet 3-6.
As shown in Figure 1, in two temperature ice storage system 1, two low-temperature receiver Ice Storage Tank 1-27 inside is free adjusts Ice Storage Tank 1-11 and new wind Ice Storage Tank 1-12 two Ice Storage Tank, wherein new wind evaporimeter 1-13, A/C evaporator 1-6, be separately fixed on evaporator support 1-7, knockout 1-5 is connected with flow controller 1-4, it is outside that flow controller 1-4 and low pressure refrigerant muffler 1-2 is arranged on two low-temperature receiver Ice Storage Tank 1-27, flow controller 1-4 is connected with refrigerant high-pressure transfusion tube 1-3, discharge 1-8 is connected with low pressure refrigerant muffler 1-2, low pressure refrigerant muffler 1-2 and refrigerant high-pressure transfusion tube 1-3, that the refrigerant R245fa of high temperature modification water-cooled Condensing units 1-1 enters, go out pipe.Above equipment and parts and components constitute a two warm ice storage system 1.
As shown in Figure 1, two temperature ice storage system 1 electricity consumption paddy phase when 0:00 ~ 8:00 at night every day brings into operation, and electricity price is now the cheapest, is 1/4 of electricity consumption on daytime peak phase electricity price.After high temperature modification water-cooled Condensing units 1-1 starting, operation, refrigerant high-pressure transfusion tube 1-3 sends the high temperature of refrigerant R245fa, highly pressurised liquid flow controller 1-4 to, carries out throttling, step-down, then enter the knockout 1-5 in new wind Ice Storage Tank 1-12 and air-conditioning Ice Storage Tank 1-11 respectively, enter new wind evaporimeter 1-13 and A/C evaporator 1-6 by knockout 1-5.When the high temperature of refrigerant R245fa, highly pressurised liquid enter flow controller 1-4 throttling, flow is constant, flow velocity speeds, pressure reduces, after entering evaporimeter, because " throttling refrigeration effect " of " Joule-Thomson " law acts on, the volume of refrigerant R245fa expands suddenly, pressure reduces, produce liquid-gas phase becomes, and becomes low pressure, low-temperature steam from high temperature, highly pressurised liquid.Now, the evaporating temperature of refrigerant R245fa is-5 DEG C, conducted heat by the tube wall of evaporimeter, absorb the sensible heat of water in new wind Ice Storage Tank 1-12 and air-conditioning Ice Storage Tank 1-11, when the temperature of water drops to 0 DEG C, the water in new wind Ice Storage Tank 1-12 and air-conditioning Ice Storage Tank 1-11 starts liquid-solid phase transformation occurs, and the latent heat of release water freezes, by release sensible heat to release latent heat, complete one by water change ice liquid-solid phase transformation process of cool.
As shown in Figure 2, in two temperature ice storage system 1, air-conditioning backwater current water-locator 1-9 and air-conditioning water supply current water-locator 1-10 is also installed in air-conditioning Ice Storage Tank 1-11.Air conditioning water is from air conditioning water return pipe 1-18, enter air-conditioning Ice Storage Tank 1-11 top, by the water distributing pore on air-conditioning backwater current water-locator 1-9, ice-melt on the ice sheet being sprinkled upon air-conditioning Ice Storage Tank 1-11 top uniformly, ice is made to become the chilled water of 0 DEG C ~ 18 DEG C, again by water supply current water-locator 1-10 and the air conditioning water feed pipe 1-19 of air-conditioning Ice Storage Tank 1-11 bottom, enter air-conditioning and freeze water water pump 1-21, be sent in the two cold source type air-conditioning cabinet 2-1 of combined type and circulate in air conditioner watch cooling 2-4, waste heat (sensible heat) in decontamination chamber; New wind chilled water enters the ice sheet on new wind Ice Storage Tank 1-12 top from new wind chilled water return pipe 1-15, ice-melt, ice is made to become the chilled water of 0 DEG C ~ 7 DEG C, by new wind chilled water feed pipe 1-17, enter new wind chilled water water pump 1-20, deliver in the two cold source type air-conditioning cabinet 2-1 of combined type and circulate in fresh air cooler 2-3, in decontamination chamber remaining wet (latent heat).
As shown in Figure 2, the water distributing pore diameter on air-conditioning backwater current water-locator 1-9 and water supply current water-locator 1-10 and quantity, according to flow and the flow velocity decision of air conditioning water, chilled-water flow size and temperature height are determined by air conditioning area refrigeration duty.Because air conditioning water is large temperature difference water supply pattern, after 0 DEG C ~ 7 DEG C low temperature water supply stages, also has the high temperature chilled water water supply process of 8 DEG C ~ 18 DEG C, in this process, because the effect of air-conditioning backwater current water-locator 1-9 and water supply current water-locator 1-10, between the chilled water confession in air-conditioning Ice Storage Tank 1-11, backwater, by generation mesolimnion, avoid chilled water to produce gravity current convection current because flow velocity is too fast, affect air conditioning water quality of water supply.The flow of air conditioning water and temperature, by air conditioning water return pipe electronic proportional integral control valve 1-25, air conditioning water feed pipe electric two-way valve 1-26 automatic control and adjustment.The confession of current water-locator, backwater flow velocity general control are between 0.3 ~ 0.6M/S.The water distributing pore of air-conditioning backwater current water-locator 1-9 is to only installing, and the water distributing pore of air-conditioning water supply current water-locator 1-10 is installed downwards.
As shown in Figure 2, in the bottom of new wind Ice Storage Tank 1-12 and air-conditioning Ice Storage Tank 1-11, between evaporimeter and Ice Storage Tank, respectively there is the chilled water space of a high 500MM, for two temperature Ice Storage Tank 1-27 cooling initial stage provides chilled water.Generally, the distance of 500MM is kept to be not-easy-to-freeze with evaporimeter.In order to prevent the unexpected freeze over of new wind Ice Storage Tank 1-12 and air-conditioning Ice Storage Tank 1-11, or chilled water supplies in air-conditioning Ice Storage Tank 1-11, return pipe and current water-locator freeze over, make two warm Ice Storage Tank 1-27 cooling initial stage that the situation of chilled water can not be provided to occur, upper at air-conditioning Ice Storage Tank 1-11, bottom is design and installation air conditioning water backwater bypass pipe 1-14 respectively, air conditioning water backwater bypass pipe electric two-way valve 1-14-1, air conditioning water water supply bypass pipe 1-16, air conditioning water water supply bypass pipe electric two-way valve 1-16-1, these bypass pipes respectively with air conditioning water return pipe 1-18, air conditioning water feed pipe 1-19 is connected.At two temperature Ice Storage Tank 1-27 cooling initial stage, when in the two warm Ice Storage Tank 1-27 freeze over of PLC intelligence control system 3 alarm display system display or air-conditioning Ice Storage Tank 1-11, chilled water supplies, return pipe and current water-locator freeze over, namely main control computer sends instruction, open air conditioning water backwater bypass pipe electric two-way valve 1-14-1 and air conditioning water water supply bypass pipe electric two-way valve 1-16-1, make in humiture sub-control air conditioning terminal system 2 return pipe 18 DEG C ~ 22 DEG C (when night, air conditioner end equipment was stopped using, chilled water temperature go up) chilled water, enter the bottom ice-melt of air-conditioning Ice Storage Tank 1-11, start air-conditioning subsequently to freeze water water pump 1-21 and carry out short-circuit cycle.When the freezing water yield can meet the needs of humiture sub-control air conditioning terminal system 2, namely close air conditioning water water supply bypass pipe electric two-way valve 1-16-1, recover chilled water normal circulation.New wind chilled water feed pipe water flow switch 1-17-1 and air conditioning water feed pipe water flow switch 1-22 provides chilled-water flow information respectively; protect new wind chilled water water pump 1-20 and air-conditioning to freeze the safety of water water pump 1-21, do not break down because of lack of water or water shortage or burn.New wind Ice Storage Tank 1-12, because ice storage amount is few, chilled water output is little, does not establish bypass pipe.
As shown in Figure 2, expansion tank 1-28 is arranged on 1.5 ~ 2 meters of on air conditioning water system peak, be mainly in two warm Ice Storage Tank 1-27, chilled water leaves expansion space when freezing, in addition for the chilled water system of humiture sub-control air conditioning terminal system 2 plays high-order level pressure effect, pressurization point is located on air conditioning water return pipe 1-18 and new wind chilled water return pipe 1-15 respectively.Maintain air-conditioning, new wind chilled water system hydraulic equilibrium is also chilled water system moisturizing.
As shown in Figure 3, the two cold source type air-conditioning cabinet 2-1 of combined type in humiture sub-control air conditioning terminal system 2, be the two low-temperature receiver assembled air-conditioner cabinet of a typical humiture sub-control, be made up of new wind air inlet 2-2, fresh air cooler 2-3, air conditioner watch cooling 2-4, air-conditioning cabinet return air inlet 2-5, air-conditioning cabinet air outlet 2-6, fresh air cooler return pipe electronic proportional integral control valve 2-7, fresh air cooler feed pipe electric two-way valve 2-8, air conditioner watch cooling return pipe electronic proportional integral control valve 2-9, air conditioner watch cooling feed pipe electric two-way valve 2-10.New wind Ice Storage Tank 1-12 provides cold for fresh air cooler 2-3, and air-conditioning Ice Storage Tank 1-11 provides cold for air conditioner watch cooling 2-4.PLC intelligence control system 3, the wind pushing temperature of new wind devices and the return air temperature of dry type air conditioner end equipment and indoor relative humidity information is detected according to temperature sensor 3-2, by main control computer 3-1, respectively to new wind chilled water water pump 1-20, air-conditioning freezes the frequency converter of water water pump 1-21 and new wind chilled water feed pipe electric two-way valve 1-22, new wind chilled water return pipe electronic proportional integral control valve 1-23, air conditioning water feed pipe electric two-way valve 1-24, air conditioning water return pipe electronic proportional integral control valve 1-25 regulates and controls, control enters fresh air cooler 2-3, the chilled-water flow of air conditioner watch cooling 2-4, to control new wind degree of depth moisture removal and indoor temperature, realize humiture dual control.
As shown in Figure 3, in humiture sub-control air conditioning terminal system 2, outdoor new wind enters from the new wind air inlet 2-2 of the two low-temperature receiver air-conditioning cabinet 2-1 new wind section of combined type, net filtration after filtration, enter fresh air cooler 2-3, carry out dehumidifying, lowering the temperature, enter air-conditioning cabinet mixing section again, after mixing with the room conditioning return air stream entered from air-conditioning cabinet return air inlet 2-5, enter air conditioner watch cooling 2-4 to lower the temperature again, enter air conditioning exhausting pipe from air-conditioning cabinet air outlet 2-6, send into indoor, so complete the circulation in a organized way that a room conditioning air-flow adds new general mood stream.In the two low-temperature receiver air-conditioning cabinet 2-1 of combined type, complete low temperature dehumidification and the large temperature difference and to lower the temperature two processes.One is that outdoor new wind enters from the new wind air inlet 2-2 of the two low-temperature receiver air-conditioning cabinet 2-1 new wind section of combined type, after filtering, enter fresh air cooler 2-3 dehumidification process, in this process, outdoor new wind contacts with fresh air cooler 2-3, and the steam in new wind condenses into water under dew-point temperature, flows to drip tray and discharges, new wind also reduces portion temperature simultaneously, becomes dry fresh air.The chilled water low-temperature receiver of fresh air cooler 2-3 is from new wind Ice Storage Tank 1-12, and inflow temperature is 5 DEG C ~ 7 DEG C, and leaving water temperature is 12 DEG C (12 DEG C is mechanical dew-point temperature).New wind latent heat load duty adjusts 30 ~ 50% of total load, is born by the independent low-temperature receiver of new wind cold-storage ice groove 1-12 completely, utilizes the chilled water of 5 DEG C ~ 7 DEG C, eliminates remaining wet (latent heat load), realizes the dehumidifying of the room air degree of depth, controls moisture removal separately; Two is after dry fresh air mixes with room conditioning return air, enter air conditioner watch cooling 2-4 temperature-fall period, in this process, dry fresh air mixes with room conditioning return air stream, carry out heat exchange through the surface of air conditioner watch cooling 2-4 and chilled water, eliminate waste heat (sensible heat load), enter air conditioning exhausting pipe from air-conditioning cabinet air outlet 2-6, send into indoor, realize room air cooling.The low-temperature receiver of air conditioner watch cooling 2-4 is from air-conditioning Ice Storage Tank 1-11, and chilled water inflow temperature is respectively 0 DEG C ~ 7 DEG C and 8 DEG C ~ 18 DEG C two temperature sections, and return water temperature is 12 DEG C ~ about 20 DEG C, belongs to large temperature difference water supply coverage.
As shown in Figure 1, PLC intelligence control system 3 comprises main control computer 3-1, temperature sensor 3-2, pressure sensor 3-3, belt temperature sensor 3-4, dynamic power distribution cabinet 3-5, equipment control cabinet 3-6.Be arranged on the belt temperature sensor 3-4 in two low-temperature receiver Ice Storage Tank 1-27, that detects in two low-temperature receiver Ice Storage Tank 1-27 is upper, in, lower freezer coolant-temperature gage, temperature information is transferred to main control computer 3-1, calculate by analysis, automatically the frequency converter of new wind chilled water water pump 1-20 is controlled by main control computer 3-1, air-conditioning freezes the frequency size of the frequency converter of water water pump 1-21 and new wind chilled water feed pipe electric two-way valve 1-24, air conditioning water feed pipe electric two-way valve 1-26 opens, close and new wind chilled water return pipe electronic proportional integral control valve 1-23, the open degree of air conditioning water return pipe electronic proportional integral control valve 1-25, chilled-water flow size is regulated with this, meet the air conditioner end equipment in humiture sub-control air conditioning terminal system 2 and new wind devices hot humidity load change needs, main control computer 3-1 is by being arranged on temperature sensor 3-2, the pressure sensor 3-3 on air-condition freezing water pump 1-21, new wind chilled water pump 1-20, cooling water pump 1-29, cooling tower 1-30, detect the temperature and pressure information of each equipment, calculate by analysis, automatic control frequency converter frequency, controls chilled water, cooling water flow, main control computer 3-1 is by being arranged in humiture sub-control air conditioning terminal system 2, temperature sensor 3-2 on the return air inlet of new wind devices outlet and dry type air conditioner end equipment, moisture detector detects new wind outlet temperature, humidity and room conditioning temperature, humidity information, calculate by analysis, electronic proportional integral control valve 2-7, electric two-way valve 2-8 on automatic control fresh air cooler 2-3, the electronic proportional integral control valve 2-9 of air conditioner watch cooling 2-4 and electric two-way valve 2-10, control chilled-water flow, fresh air dehumidification amount and room conditioning temperature automatically, main control computer 3-1, according to the indoor carbon dioxide concentration information that carbon dioxide indicator detects, calculates by analysis, the start-stop of exhaust blower in automatic control room, gas concentration lwevel in control room, ensures IAQ, the main control computer 3-1 of PLC intelligence control system 3 passes through two low-temperature receiver Ice Storage Tank 1-27 and humiture sub-control air conditioning terminal system 2, high temperature modification water-cooled Condensing units 1-1 overall monitor, realize two low-temperature receiver Ice Storage Tank 1-27 automatically to change at cold-storage, discharging cold course, ensure that the refrigeration host computer of the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage, water pump, air conditioner end equipment, new wind devices etc. run under most high energy efficiency ratio (COP) situation, reduce air-conditioning power consumption and operating cost as far as possible.
The main control computer 3-1 of PLC intelligence control system 3, be connected with high temperature modification water-cooled Condensing units 1-1, dynamic power distribution cabinet 3-5, equipment control cabinet 3-6 by communication interface, the service data of various equipment and running status in the two cold source air conditioning system of record series direct-evaporating type ice-water cold storage.PLC intelligence control system 3 is also designed with warning and fault display system, equipment control cabinet 3-6 is provided with touch-screen, once there be fault to occur, main control computer 3-1 and touch-screen can show trouble location and character, prompting failure cause, and record and warning, implement Long-distance Control, close, stop relevant device, prevent major break down from occurring, avoid major break down to occur.Main control computer 3-1 can Long-distance Control, and operating personnel also by being arranged on disc type thermometer, the Pressure gauge at each position, can implement on-site supervision, ensures that the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage normally runs.
The two cold source air conditioning system , Yi Full load cold storage of ice making of seriation direct-evaporating type ice-water cold storage replaces the new concept of sub-load cold storage of ice making, has surmounted now all in the world ice-storage air-conditioning systems comprehensively.Owing to adopting innovative three technology measure: (1), increase Ice Storage Tank volume 30%, the mode adopting 8 DEG C ~ 18 DEG C large temperature difference to supply water, for air-conditioning system provides chilled water, can increase semen donors 12.7%.(2), adopt humiture dual control air conditioning operating mode and cooling system to run at night, make high temperature modification water-cooled Condensing units Energy Efficiency Ratio (COP) bring up to 4.5 ~ 6 from 3.2 ~ 4, refrigeratory capacity can increase about 14 ~ 15%.(3) the high temperature modification water-cooled Condensing units of larger than specified refrigerating capacity 25 ~ 30%, is selected, utilize the electric power oepration at full load at a low price of electricity consumption at night paddy phase, ice making, cold-storage, simultaneously, increase evaporator evaporation area, increasing evaporimeter takies Ice Storage Tank amount of space, semen donors 25 ~ 30% can be increased.Calculate by ice-reserving utilization rate 90% by Ice Storage Tank employing measure (1), (2), the ice making of two temperature ice storage system, cold storage capacity increase (12.7%+15%) × 90%=24.9%, can meet air-conditioning system 8 hours operating load demands by day.Employing measure (1), (2), (3) calculate by ice-reserving utilization rate 90%, ice making, cold storage capacity add altogether (12.7%+15%+30%) × 90%=51.9%, can meet air-conditioning system 13 ~ 14 hours operating load demands by day.No matter adopt what measure above, when air-conditioning system is run by day for 8 ~ 14 hours, all need not to turn on the aircondition the equipment such as refrigeration host computer, cooling water pump, cooling tower, only start chilled water water pump, cold, cooling is got from two low-temperature receiver Ice Storage Tank, save a large amount of electric power, saving operation of air conditioner expense on daytime more than 85%.
Owing to adopting the large temperature difference for cold-peace humiture dual control mode, air-conditioning system utilizes independently low temperature cold source that the new wind degree of depth is dehumidified, can accurately control moisture removal and indoor temperature, expand the scope of application of the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage, except comfort air conditioning system, the needs of various industrial air-conditioning, technological air conditioning system, clean air conditioner, constant temperature, constant wetting air conditioner system can also be met.Decrease cost of investment, achieve the dream that the two cold source air conditioning system of rowization direct-evaporating type ice-water cold storage substitutes all air-conditioning systems, energy-conservation, reduce discharging a great pioneering work and innovation beyond doubt in sciemtifec and technical sphere.

Claims (9)

1. the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage, one utilizes electricity consumption at night every day paddy phase electric power at a low price, start the ice making of high temperature modification water-cooled Condensing units, cold-storage, for daytime air-conditioning, VMC provides the seriation direct-evaporating type ice-water cold storage in cold source of air conditioning and new air-cooled source two cold source air conditioning system respectively.By comprising: two temperature ice storage system, humiture sub-control air conditioning terminal system, PLC intelligence control system etc. form.It is characterized in that, the two cold source air conditioning system Yi Full load cold storage of ice making of described seriation direct-evaporating type ice-water cold storage replaces the new concept of sub-load cold storage of ice making, have employed three technology innovative measure: adopt the pattern of 8 DEG C ~ 18 DEG C large temperature difference water supply, adopt humiture dual control air conditioning operating mode, select the high temperature modification water-cooled Condensing units of larger than specified refrigerating capacity 25 ~ 30% as ice-storage cool source module.Make the cold storage capacity of two low-temperature receiver Ice Storage Tank, increase by more than 24 ~ 51% than the cold storage capacity of present all ice-storage air-conditioning systems.For air-conditioning system on daytime provides the refrigeration duty of 8 ~ 14 hours, save air-conditioning operating cost on daytime more than 85%.Can extensive use replace various air-conditioning system, be there is ice conserve cold, innovative comprehensive energy-storage air conditioner system that two low-temperature receivers of water cold storage feature, temperature, humidity control respectively.
2. the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage as claimed in claim 1, it is characterized in that, the two cold source air conditioning system of described seriation direct-evaporating type ice-water cold storage, adopt: (1), increase Ice Storage Tank volume 30%, adopt the mode that 8 DEG C ~ 18 DEG C large temperature difference supply water, for air-conditioning system provides chilled water, semen donors 12.7% can be increased.(2) adopt humiture dual control air conditioning operating mode, make high temperature modification water-cooled Condensing units Energy Efficiency Ratio (COP) bring up to 4.5 ~ 6 from 3.2 ~ 4, refrigeratory capacity can increase about 14 ~ 15%.(3) the high temperature modification water-cooled Condensing units of larger than specified refrigerating capacity 25 ~ 30%, is selected, utilize the electric power oepration at full load at a low price of electricity consumption at night paddy phase, ice making, cold-storage, simultaneously, increase evaporator evaporation area, increasing evaporimeter takies Ice Storage Tank amount of space, semen donors 25 ~ 30% can be increased.This three measures, calculate by ice-reserving utilization rate 90%, employing measure (1), (2) can increase semen donors (12.7%+15%) × 90%=24.9%, adopt measure (1), (2), (3) can increase semen donors (12.7%+15%+30%) × 90%=51.9%.
3. the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage as claimed in claim 1, it is characterized in that, in the two cold source air conditioning system of described seriation direct-evaporating type ice-water cold storage, air-conditioning Ice Storage Tank is provided with chilled water backwater bypass pipe and chilled water water supply bypass pipe, the entrance of chilled water backwater bypass pipe to be arranged in air-conditioning Ice Storage Tank near feed pipe outlet, backwater, water supply bypass pipe are provided with electric two-way valve, control its switch by PLC intelligence control system and open, between the stopping time.Bypass pipe be mainly used in the air-conditioning Ice Storage Tank cooling initial stage because of the chilled water water yield very few, or because of freeze over unexpected in air-conditioning Ice Storage Tank, in air-conditioning Ice Storage Tank feed pipe delivery port and current water-locator produce ice stifled can not cool thermal discharge time, utilize in air conditioning water system, the hot water short-circuit cycle of 18 DEG C in indoor water pipe ~ 22 DEG C, the ice of feed pipe delivery port in air-conditioning Ice Storage Tank and current water-locator knot is melted rapidly as chilled water, ensure that air-conditioning Ice Storage Tank lets cool the initial stage and has enough chilled water circulations, prevent the anhydrous idle running of chilled water pump and break down or burn.
4. the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage as claimed in claim 1, it is characterized in that, in the two cold source air conditioning system of described seriation direct-evaporating type ice-water cold storage, two low-temperature receiver Ice Storage Tank is provided with flow controller, flow controller can be expansion valve (outer balanced type, internal balance type), also can be electric expansion valve or capillary.According to " throttling refrigeration effect " principle of " Joule-Thomson " law, high temperature modification water-cooled Condensing units is in kind of refrigeration cycle, and high temperature, high pressure refrigerant liquid, after flow controller throttling, enter the direct sweat cooling of evaporimeter.In throttling process, high temperature, high pressure refrigerant fluid flow are constant, and flow velocity increases, and pressure reduces, and after entering direct-evaporation-type evaporimeter, volume expands suddenly, density reduces, and produce liquid-vapour phase and become, become gaseous state, become refrigerant low-pressure steam from liquid state.In evaporation process, refrigerant low-pressure steam absorbs the sensible heat of ice-reserving trough inner water, when the temperature of water drops to 0 DEG C, produces liquid ~ solid phase and becomes, and the water release latent heat of 0 DEG C freezes, and reaches the object of ice conserve cold, thus completes kind of refrigeration cycle and cold storage of ice making process.All flow controllers are all arranged on outside Ice Storage Tank, in the cryogenic freezing water avoiding high temperature, high-voltage tube and flow controller to be immersed in Ice Storage Tank, are lowered the temperature, step-down, lose " throttling refrigeration effect ".
5. the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage as claimed in claim 1, it is characterized in that, the two cold source air conditioning system of described seriation direct-evaporating type ice-water cold storage, in two low-temperature receiver Ice Storage Tank, is separately installed with backwater current water-locator and water supply current water-locator.Current water-locator is for controlling backwater, the confession water flow velocity of air conditioning water.Backwater current water-locator is arranged on air-conditioning Ice Storage Tank top, and upward, chilled water backwater upwards flows out water distributing pore; Water supply current water-locator is arranged on cold air-conditioning Ice Storage Tank bottom, and down, chilled water sucks from below water distributing pore.The water velocity of current water-locator water distributing pore controls between 0.3 ~ 0.6M/S, and current water distributing pore diameter and quantity are determined by air-condition freezing discharge.The effect of current water-locator, that air-conditioning Ice Storage Tank is when 8 DEG C ~ 18 DEG C of large temperature difference coolings, mesolimnion is produced between air-conditioning high temperature chilled water backwater and cryogenic freezing water supply water, avoid chilled water backwater and chilled water water supply in air-conditioning Ice Storage Tank to produce gravity convection mixing because flow velocity is too fast, affect chilled water supply water temperature quality.
6. the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage as claimed in claim 1, is characterized in that, in described two temperature ice storage systems, be provided with expansion tank.Expansion tank is arranged on 1.5 ~ 2 meters of on air conditioning water system peak, mainly leave expansion space when freezing for chilled water, in addition for chilled water system plays high-order level pressure effect, pressurization point, on the water inlet supervisor of chilled water pump, maintains air-conditioning, new wind chilled water system hydraulic equilibrium is also chilled water system moisturizing.
7. the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage as claimed in claim 1, is characterized in that, in described two low-temperature receiver Ice Storage Tank, is provided with many group direct-evaporation-type low-pressure steam generators, hereinafter referred to as evaporimeter.Often organizing evaporimeter is that the serpentine coil that 6.5 ~ 12 millimeters of copper tubes are coiled into forms by diameter.The inlet end of serpentine coil is welded on knockout, and knockout is connected with the flow controller outside two low-temperature receiver Ice Storage Tank; The air return end of serpentine coil is welded on discharge, and discharge is connected with the return-air house steward outside two low-temperature receiver Ice Storage Tank.The external surface area of copper tube is disengagement area, and the size of disengagement area, copper tube caliber and length, and the quantity of evaporimeter, by high temperature modification water-cooled Condensing units, the refrigeratory capacity size when coolant media evaporating temperature is-5 DEG C is determined.Base of evaporator is apart from chilled water water supply current water-locator 300MM, 200MM bottom the two low-temperature receiver Ice Storage Tank of water supply current water-locator distance, the space of 500MM bottom this pair of low-temperature receiver Ice Storage Tank, account for about 15% of Ice Storage Tank volume, it is chilled water not ice field, prevent from freezing water water supply current water-locator to freeze, ensure two low-temperature receiver Ice Storage Tank cooling initial stage, have enough chilled water internal circulating loads.
8. the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage as claimed in claim 1, it is characterized in that, in the two cold source air conditioning system of described seriation direct-evaporating type ice-water cold storage, high temperature modification water-cooled Condensing units, the organic coolant media of environment-friendly type of choice for use is Honeywell 245fa (hereinafter referred to as R245fa), the chemical name of R245fa is pentafluoropropane, and molecular formula is CF 3cH 2cHF 2, there is the characteristics such as macroscopic property is stable, the coefficient of heat conduction is high, operating temperature range extensively, is not burnt, do not damage the ozone layer.The evaporating temperature of native system R245fa is-5 DEG C.
9. the two cold source air conditioning system of seriation direct-evaporating type ice-water cold storage as claimed in claim 1, is characterized in that, the two cold source air conditioning system of described seriation direct-evaporating type ice-water cold storage, choice for use PLC intelligence control system.The main control computer of PLC intelligence control system is by being arranged on the belt temperature sensor in two low-temperature receiver Ice Storage Tank, detect the temperature information in upper, middle and lower portion in two low-temperature receiver Ice Storage Tank, by the open degree of the sub-expansion valve of main control computer automatic control electric, control the flow of refrigerant R245fa, reach the object of high energy efficiency refrigeration, PLC intelligence control system also passes through temperature sensor, detect the temperature information of two low-temperature receiver Ice Storage Tank chilled water water supply, backwater, regulation and control is carried out to the electronic proportional integral control valve on chilled water return pipe, the electric two-way valve on feed pipe, simultaneously, the frequency converter of chilled water pump controlled and regulates, controlling the flow of chilled water, by to electronic proportional integral regulable control, ensure that new wind Ice Storage Tank provides the temperature range of chilled water to be 5 DEG C ~ 7 DEG C, provides the temperature range of chilled water to be 8 DEG C ~ 18 DEG C for the dry type air conditioner end equipment of humiture sub-control air conditioning terminal system for new wind devices, realize two low-temperature receiver Ice Storage Tank cold-storage, discharging cold course automation and humiture dual control, ensure that the equipment such as high temperature modification water-cooled Condensing units, water pump run under most high energy efficiency ratio situation, reduce air-conditioning power consumption and operating cost, the main control computer of PLC intelligence control system passes through temperature sensor, moisture detector, carbon dioxide indicator, to the wind pushing temperature of new wind devices and the return air temperature of dry type air conditioner end equipment, indoor relative humidity, indoor carbon dioxide concentration detects, pass through main control computer, the electric two-way valve of the new wind devices of automatic control and the electronic proportional integral control valve of dry type air conditioner end equipment, realize the automatic control to chilled-water flow, meet room conditioning temperature, the requirement of humidity, implement to open to indoor exhaust wind machine, stop controlling, ensure that indoor carbon dioxide concentration meets standard, the main control computer of PLC intelligence control system is connected with high temperature modification water-cooled Condensing units, dynamic power distribution cabinet and equipment control cabinet by communication interface, the service data of record air-conditioning system all devices and running status, main control computer and equipment control cabinet are provided with touch-screen, can show running status, the abort situation of two warm ice storage system and humiture sub-control air conditioning terminal system and various equipment, main control computer is provided with warning system, can analyzing failure cause and and alarm, implement Long-distance Control, automatically close, stop associated components and equipment, prevent significant trouble from occurring, avoid major accident to occur.
CN201410359231.1A 2014-07-21 2014-07-21 Serialized direct evaporation type ice-water cold accumulation double-cold-source air conditioning system Pending CN104214857A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106705334A (en) * 2016-11-18 2017-05-24 仲恺农业工程学院 Energy recovery type double-cold-source large-enthalpy-difference energy storage fresh air handling unit and control method thereof
CN107228428A (en) * 2017-07-17 2017-10-03 西安建筑科技大学 A kind of full air-conditioning system of family formula fresh air purifying
CN107246672A (en) * 2017-07-17 2017-10-13 西安建筑科技大学 A kind of full air-conditioning system of family formula fresh air purifying suitable for cold district
CN109140822A (en) * 2018-10-10 2019-01-04 上海华电源牌环境工程有限公司 Lithium bromide and the big temperature-difference refrigerating device of ice storage
CN109579225A (en) * 2018-11-26 2019-04-05 邝德昌 Intelligent evaporative air cooler monitoring method and system based on Internet of Things
CN109945364A (en) * 2019-03-25 2019-06-28 珠海格力电器股份有限公司 Air conditioner and control method thereof
CN110953668A (en) * 2019-12-23 2020-04-03 珠海格力电器股份有限公司 Double-cold-source air conditioning system
CN113266913A (en) * 2021-06-07 2021-08-17 北京兴拓置业有限公司 Intelligent new trend system of branch family based on Ai intelligence
CN114239322A (en) * 2022-01-17 2022-03-25 中国电力工程顾问集团华北电力设计院有限公司 Design and optimization method and system for flue gas water lifting system of coal-fired power plant
CN114239322B (en) * 2022-01-17 2024-05-10 中国电力工程顾问集团华北电力设计院有限公司 Method and system for designing and optimizing flue gas water lifting system of coal-fired power plant

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