CN109282399A - A kind of air conditioning water system of multi-stage refrigerating and end cascaded utilization of energy - Google Patents
A kind of air conditioning water system of multi-stage refrigerating and end cascaded utilization of energy Download PDFInfo
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- CN109282399A CN109282399A CN201810969653.9A CN201810969653A CN109282399A CN 109282399 A CN109282399 A CN 109282399A CN 201810969653 A CN201810969653 A CN 201810969653A CN 109282399 A CN109282399 A CN 109282399A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Other Air-Conditioning Systems (AREA)
Abstract
The present invention provides a kind of multi-stage refrigerating and the air conditioning water systems of end cascaded utilization of energy, it include: water system, return water system, return water system includes: water return pipeline, the first refrigeration machine, refrigerated heat exchanger, and the return water of return water system sequentially flows through after the first refrigeration machine carries out level-one cooling, refrigerated heat exchanger progress second level cooling and imports progress three-level cooling inside ice storage unit.The mixed water ratio (into the ratio between the secondary network circling water flow rate of multifunctional pump and primary net water supply flow) that the present invention mixes water force (forcing) pump by adjusting end adjusts supply water temperature, improves total return water temperature of air-conditioning system to greatest extent.And thtee-stage shiplock refrigeration system then reduces supply water temperature to greatest extent, two system combined effects increase supply backwater temperature difference as far as possible, have maximally reduced the water supply of air conditioning water.System initial cost is smaller, and operation energy consumption and expense are low, has simply, and operation adjusts, manages easy, the strong advantage of stability.
Description
Technical field
The present invention relates to field of heating ventilation air conditioning more particularly to the air-conditioning colds of a kind of multi-stage refrigerating and end cascaded utilization of energy
Freeze water system.
Background technique
In traditional air-conditioning system, requirement by end-equipment to chilled water supply and return water temperature and the temperature difference, the confession of chilled water
Return water temperature is mostly 7/12 DEG C or so, and supply backwater temperature difference is about 5 DEG C or so.Air-conditioning refrigeration system is usually single stage system
System directly provides 7 DEG C or so chilled waters；Ice-chilling air conditioning system has the form of two-stage tandem, i.e. Ice Storage Tank and Double-working-condition is freezed
Machine series connection, is indirectly connected with by way of Intermediate Heat Exchanger is arranged, and the temperature of 12 DEG C or so air-conditioning system return water is reduced
To 7 DEG C or so, extremely a other air-conditioning refrigeration system also has the concatenated form of two stage cooler, and 12 DEG C or so of air-conditioning system is returned
Water cools to 7 DEG C or so or two refrigeration machine parallel connections step by step, wherein having one for high-temperature refrigeration machine, two refrigeration machines are distinguished
The chilled water of different temperatures is provided, then by two sets of transportation systems, supplies different end-equipments.
It is analyzed by inverse Carnot cycle, improves the evaporating temperature of refrigeration machine, is i.e. raising chilled water supply water temperature, system can be improved
The COP(coefficient of performance of cold).According to statistics, the evaporating temperature of refrigeration machine is every improves 1 DEG C, i.e., chilled water supply water temperature is every improves 1
DEG C (refrigeration machine evaporating temperature low 1 DEG C or so more general than chilled water supply water temperature), COP averagely improves 3%~5% or so.Here it is
The reason of high-temperature refrigeration machine COP is significantly greater than general refrigerator.
With the development of China's urban construction, urban land resource is more and more in short supply, and urban architecture density is increasing.Closely
Several years numerous and confused construction central business districts CBD(in all parts of the country), the landmark group as city.Building in CBD is mostly big
Scale of construction Commercial Complex, there are many high-rise even Super High, and site coverage is very big, the complicated multiplicity of building function, air-conditioning system load
Larger, operation energy consumption is higher.The ratio that district cooling technology is applied in CBD is wide, but from one current be currently running
It is not difficult to find that the comprehensive energy efficiency of certain systems is not very high in a little district cooling projects.To find out its cause, mainly including following two
Point: first is that because refrigeration system is longer in the time of operation at part load operating condition, Smaller load runing adjustment is extremely difficult, causes to make
Cooling system efficiency is relatively low；Second is that because the energy consumption of chilled water conveying system is higher, especially long-distance sand transport.It certainly also include certainly
The not perfect and management system of autocontrol system it is unsound etc..
In recent years, small in view of air-conditioning system load, that system initial cost is low, energy saving, comfortable, indoor air quality is high etc. is excellent
The theory of point, humiture independence control air conditioner system is widely received and has carried out large-scale application.In temperature and humidity independence
Control air-conditioning system in, using temperature and two sets of independent air-conditioning systems of humidity, control respectively, adjust indoor temperature with it is wet
Degree.(1) excluding waste heat can be realized using various ways, can as long as cooling effect can be realized lower than room temperature in the temperature of medium
In a manner of using mediate contact (radiation tail end etc.), and it can be replaced by the flowing of Cryogenic air to realize.(2) more than excluding
Wet task, the excluding CO2, foreign flavor indoors and other pernicious gases of the task pass through low humidity, the air of low concentration and room sky
The displacement of gas is realized.Since the task of dehumidifying is undertaken by independent humidity control system, thus handle the freezing of sensible heat system
Water supply water temperature no longer needs the 7oC in conventional condensation dehumidifier/air-conditioning system, and can be improved to 16~18oC, to be natural
The use of cold source provides condition, even if using conventional electric refrigeration modes, the coefficient of performance of refrigeration machine is also greatly improved.
Waste heat eliminates end equipment can be using diversified forms such as radiation tail end, dry-type fan coils.Due to independent temperature-humidity control sky
Adjusting system separates indoor heat extraction and hydrofuge process, avoids loss brought by the wet Combined Treatment of heat in conventional air conditioning system.
It can satisfy the continually changing requirement of room heat moisture ratio simultaneously, overcome and be difficult to meet epidemic disaster simultaneously in conventional air conditioning system
The requirement of parameter, the phenomenon that avoiding indoor humidity excessively high (or too low).
But in humiture independence control air conditioner system, the end-equipment of diversified forms may be simultaneously present, it is required
Chilled water supply water temperature it is different, such as 14oC, 16oC, 18oC or other temperature.If using conventional refrigeration system,
There are two types of solutions: (1) refrigerating plant room provides the cold water of same temperature, and a heat exchange is then added in end-equipment computer room
Device makes secondary side leaving water temperature meet the needs of different end-equipments.(2) it is prepared in refrigerating plant room and meets different ends and set
Standby cold water supplies each end-equipment by covering pipe network more.Obviously, all there is system initial cost height, operation in the two schemes
Energy consumption and expensive, system complex are adjusted, the disadvantage that control and management are inconvenient.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide a kind of multi-stage refrigerating and end energy cascade benefits
Air conditioning water system achievees the purpose that reduce supply water temperature in the form of thtee-stage shiplock refrigeration.
Realize that the technical solution of the object of the invention is as follows:
The air conditioning water system of a kind of multi-stage refrigerating and end cascaded utilization of energy, comprising: by the chilled water in ice storage unit
It is delivered to the water system of air conditioner end equipment, the return water in air conditioner end equipment is delivered to cools down in ice storage unit
Return water system, the return water system include: water return pipeline, the first refrigeration machine, the refrigerated heat exchanger that are arranged on water return pipeline, institute
The return water for stating return water system, which sequentially flows through after the first refrigeration machine carries out level-one cooling, refrigerated heat exchanger progress second level cooling, imports storage
Three-level cooling is carried out inside ice production apparatus, the return water after the ice storage unit cools down second level is processed into chilled water, the chilled water into
Enter water system to reuse for air conditioner end equipment.
As a further improvement of the present invention, further include the second refrigeration machine, be placed with Ice storage coiled pipe in the ice storage unit,
The Ice storage coiled pipe is connected to the second refrigeration machine；The Ice storage coiled pipe is immersed in ice storage unit, for freezing in ice storage unit
Water.
As a further improvement of the present invention, cooling supply pipeline and Hui Leng are equipped between the Ice storage coiled pipe and the second refrigeration machine
Pipeline, the Ice storage coiled pipe, cooling supply pipeline, return between cold pipeline, the second refrigeration machine formed be used to recycle following for low temperature refrigerating medium
Loop back path；
The confession, time cold pipeline are also connected with refrigerated heat exchanger, and refrigerated heat exchanger and ice storage unit are parallel relationships, flow through described
Low temperature refrigerating medium in refrigerated heat exchanger carries out heat exchange with the return water for flowing through the refrigerated heat exchanger, to reduce the temperature of return water
As a further improvement of the present invention, connecting line, the connection are connected between the cooling supply pipeline and time cold pipeline
Pipeline is equipped with switching valve.
As a further improvement of the present invention, the air conditioner end equipment includes that level-one cold equipment and second level are set with cold
It is standby, chilled water temperature needed for chilled water temperature needed for the level-one cold equipment is lower than second level cold equipment, the level-one
Cold equipment and the series connection of second level cold equipment, so that chilled water just enters second level cold equipment after flowing through level-one cold equipment.
As a further improvement of the present invention, the both ends of the level-one cold equipment are also parallel with water supply side bypass pipe, from
The chilled water of water system supervisor's output enters second level cold equipment after can mixing with the water outlet of level-one cold equipment, for second level
Cool equipment uses.
As a further improvement of the present invention, the both ends of the second level cold equipment are also parallel with return water side bypass pipe, and one
The return water of grade cold equipment can partially flow through return water side bypass pipe and enter return water system supervisor.
As a further improvement of the present invention, the level-one cold equipment include first with colod-application family, second with colod-application family,
Described first with colod-application family with second with cold subscriber multiple；
The second level cold equipment includes the colod-application family of third, the 4th with colod-application family, and the third is with colod-application family with the 4th with cold
Subscriber multiple.
As a further improvement of the present invention, described first is collected with second with the return water at colod-application family with the return water at colod-application family
It is used afterwards for second level cold equipment, third flows into return water system after being collected with the return water at colod-application family and the 4th with the return water at colod-application family
System.
As a further improvement of the present invention, confession water system output chilled water flow into first with colod-application family supply this first
It is used with colod-application family；
The chilled water and second of confession water system output is mixed into the second temperature needed for colod-application family with the return water at colod-application family itself
After degree flow into second use colod-application family, for this second with colod-application family use；
First collected with second with the return water at colod-application family with the return water at colod-application family after flow into third it is cold for the third with colod-application family
User uses；
First is mixed into the 4th with colod-application with the return water at colod-application family with the return water at colod-application family, the 4th with the return water at colod-application family, second
After temperature needed for family, used for the 4th with colod-application family.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention uses thtee-stage shiplock refrigeration system, and the Water cooled air conditioners return water of higher temperature is followed by the first refrigeration machine, system
Cold heat exchanger and ice storage unit, so that the leaving water temperature of the first refrigeration machine improves, the performance of the first refrigeration machine and the second refrigeration machine
Coefficient has all obtained effective promotion, and compared with conventional refrigerant system, the coefficient of performance is mentioned thtee-stage shiplock refrigeration system of the invention
It is high by 20% or more, greatly reduce the operation energy consumption and expense of refrigeration system；
2, the present invention uses level-one cold equipment and the concatenated form of second level cold equipment, supplies chilled water, backwater temperature difference increase,
Increase for, backwater temperature difference so that be greatly lowered for, water return amount, therefore the power of circulating pump decreases in Water cooled air conditioners, it is whole
The conveying energy consumption of a Water cooled air conditioners reduces.
Detailed description of the invention
Fig. 1 is the schematic diagram of air conditioning water system.
In figure, 1, base load circulating pump；2, the first refrigeration machine；3, refrigerated heat exchanger；4, ice storage unit；5 chilled water circulating pumps；
6, the second refrigeration machine；7, solution circulation pump；8, level-one cold equipment；10, second level cold equipment；12, the first force (forcing) pump；13,
One pressurization multifunctional pump；14, the second force (forcing) pump；15, the second pressurization multifunctional pump；16, water supply side bypass pipe；17, return water side bypass pipe.
Specific embodiment
The present invention is described in detail for each embodiment shown in reference to the accompanying drawing, but it should be stated that, these
Embodiment is not limitation of the present invention, those of ordinary skill in the art according to these embodiments made by function, method,
Or equivalent transformation or substitution in structure, all belong to the scope of protection of the present invention within.
In the description of the present embodiment, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the invention.
In addition, term " first ", " second ", " third " etc. are used for description purposes only, it is not understood to indicate or imply
Relative importance or the quantity for implicitly indicating indicated technical characteristic.The feature of " first ", " second " etc. is defined as a result,
It can explicitly or implicitly include one or more of the features.In the description of the invention, unless otherwise indicated,
The meaning of " plurality " is two or more.
Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to removable
Connection is unloaded, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, can pass through
Concrete condition understands concrete meaning of the above-mentioned term in the invention.
Embodiment 1:
The air conditioning water system of a kind of multi-stage refrigerating and end cascaded utilization of energy as shown in Figure 1 is present embodiments provided,
It include: that the chilled water in ice storage unit 4 is delivered to the water system of air conditioner end equipment, conveys the return water in Water cooled air conditioners
The return water system that cools down in ice storage unit conveys refrigerating medium to ice storage unit 4 to complete chilled water in ice storage unit 4 and drop
Second refrigeration machine 6 of temperature, return water system includes: water return pipeline, the first refrigeration machine 2, the cooling heat exchange that are arranged on water return pipeline
Device 3, the return water of return water system, which sequentially flows through after the first refrigeration machine carries out level-one cooling, the progress second level cooling of refrigerated heat exchanger 3, to converge
Enter progress three-level cooling, the return water after ice storage unit 4 cools down second level inside ice storage unit 4 and is processed into chilled water, the chilled water
It is reused into water system for air conditioner end equipment.It is placed with Ice storage coiled pipe in ice storage unit 4, the Ice storage coiled pipe and second
Refrigeration machine 6 is connected to；Ice storage coiled pipe is immersed in ice storage unit 4, for the water cooling in ice storage unit 4 to be frozen into ice, through the first system
The return water temperature that cold 2 flows out is lower than 18 DEG C, not only can guarantee the return water temperature into the second refrigeration machine in this way, but also can be maximized
The operation energy consumption for reducing the first refrigeration machine also ensures that the temperature of the chilled water after three-level is freezed meets design requirement.
The return water system of the present embodiment uses the form of thtee-stage shiplock refrigeration, and level-one refrigeration uses the first refrigeration machine 2, second level
Refrigeration uses refrigerated heat exchanger 3, and three-level refrigeration uses ice storage unit 4, freezed by three-level, reaches the mesh for reducing supply water temperature
Mark, this system can realize that 1~2oC supplies water.
In the present embodiment, the first refrigeration machine 2 is high-temperature refrigeration machine, mainly plays base load machine, is returned to air-conditioning system
Water plays the role of level-one cooling, the COP(coefficient of performance) it is higher, while being also able to satisfy when underload (mainly at night) runs
High energy efficiency and the requirement such as control, easy to adjust.
In the present embodiment, it is equipped with cooling supply pipeline between Ice storage coiled pipe and the second refrigeration machine 6 and returns cold pipeline, ice-reserving disk
Pipe, returns the circulation loop for being formed between cold pipeline, the second refrigeration machine 6 and being used to recycle low temperature refrigerating medium at cooling supply pipeline；For, Hui Leng
Pipeline is also connected with refrigerated heat exchanger 3, and refrigerated heat exchanger 3 and ice storage unit 4 are parallel relationships, flows through the refrigerated heat exchanger 3
Interior low temperature refrigerating medium carries out heat exchange with the return water for flowing through the refrigerated heat exchanger 3, to reduce the temperature of return water.
In the present embodiment, it the cooling supply pipeline and returns between cold pipeline and is connected with connecting line, on the connecting line
Equipped with switching valve.It is preferred that switching valve is two-port valve, returns on cold pipeline and be provided with two-way electronic valve, two-way electronic valve is located at connecting tube
Road and the rear end for returning cold piping connection.In ice-reserving state, switching valve open, two-way electronic valve close, the second refrigeration machine 6 only into
Row ice-reserving；When for cold state, two-way electronic valve is opened, and switching valve is closed, 6 cooling supply of the second refrigeration machine.
In the present embodiment, the preferred open type Ice Storage Tank of ice storage unit 4, open type Ice Storage Tank using coil pipe ice-reserving open type outside
Ice-melting mode, the return water to freeze through second level enter open type Ice Storage Tank by water distributor, straight with the ice that stores in open type Ice Storage Tank
Contact, exchanges heat, and the chilled water leaving water temperature of Ice Storage Tank is close to freezing point, usually 1~2oC or so.
The present embodiment eliminates many Intermediate Heat Exchangers, soft water system, moisturizing by the way of open type exo-melting ice direct-furnish
Pressure fixing system etc., and since the confession of air conditioning water, water return amount are greatly lowered, make pipe network caliber and valve model etc. substantially
Degree reduces, along with the civil engineering cost that outdoor pipe trench is saved can save 15% or more first throwing compared with traditional air conditioner water system
Money.
The present embodiment also discloses a kind of air conditioning water method of plural serial stage refrigeration, comprising the following steps:
Step 1: the return water of air-conditioning system supplies air conditioning terminal system after the cooling of cooling circuit, cool down circuit are as follows: defeated by fluid
It send device that return water is first delivered to the first refrigeration machine 2 and carries out level-one cooling, enter back into refrigerated heat exchanger and carry out second level cooling, finally
It imports and carries out three-level cooling inside ice storage unit 4, by the cold water supply air conditioning terminal system after cooling；
Step 2: chilled water is supplied air-conditioning end by freezing water circle device after the ice-out in ice storage unit is at chilled water
End system.
Chilled water mixes with the return water of air conditioning terminal system itself and reaches air conditioning terminal system itself in above-mentioned steps two
After required supply water temperature, air conditioning terminal system is supplied.Air conditioning terminal system includes low temperature user 8 and high temperature user 10, low temperature
User 8 connects with high temperature user 10, and the return water of low temperature user 8 and the return water of high temperature user 10 are mixed into needed for high temperature user 10
After supply water temperature supply high temperature user 10, high temperature user 10 return water mixing after also by the first refrigeration machine 2, refrigerated heat exchanger 3,
The cooling of 4 three-level of ice storage unit supplies low temperature user 8 and high temperature user 10 after becoming chilled water again.
Embodiment 2:
With the difference of embodiment 1, it is the multi-stage refrigerating of the present embodiment and the air conditioning water of end cascaded utilization of energy
System further includes distributing system, and distributing system uses power dispersion type multistage pump transmission & distribution mode, is equipped with chilled water in refrigerating plant room
Circulating pump 5 sets triplex in end-equipment computer room, and triplex includes that water force (forcing) pump is mixed in end force (forcing) pump and end, triplex
Function includes pressurization, mixed water and the pressurization of mixed water etc., plays the role of adjusting supply water temperature and adjusts pressure of supply water.Terminal temperature difference root
According to the guiding theory of cascaded utilization of energy, using level-one cold equipment (low temperature user) and second level cold equipment (high temperature user)
Concatenated form.It is can certainly be according to system the characteristics of, second level cold equipment (medium temperature user) and three-level cold equipment is (high
Warm user) series connection, constitute three-level user train.The mixed water ratio of water force (forcing) pump is mixed (into multifunctional pump by adjusting end
The ratio between secondary network circling water flow rate and primary net water supply flow) supply water temperature is adjusted, air-conditioning is thus improved to greatest extent
Total return water temperature of system.And thtee-stage shiplock refrigeration system then reduces supply water temperature to greatest extent, two system combined effects,
Supply backwater temperature difference is increased as far as possible, has maximally reduced the water supply of air conditioning water.
Chilled water circulating pump 5 in refrigerating plant room meets computer room inner ram and necessary outer net lift, is not changed by centre
The air conditioning water of 1~2oC or so is directly delivered to end-equipment by a set of transmission and distribution network by hot device.
Preferably, water force (forcing) pump, function are mixed in the triplex being arranged in end-equipment computer room, including end force (forcing) pump and end
It can include pressurization, mixed water and the pressurization of mixed water etc., according to terminal temperature difference to the different demands of supply water temperature and pressure of supply water, selection is not
Same water supply form.
As shown in Figure 1, air conditioner end equipment includes level-one cold equipment 8 and second level cold equipment 10, the level-one is with cold
Chilled water temperature needed for chilled water temperature needed for equipment 8 is lower than second level cold equipment 10, the level-one cold equipment 8 and two
Grade cold equipment 10 is connected, so that chilled water just enters second level cold equipment 10 after flowing through level-one cold equipment.Level-one is set with cold
Standby 8 include first using colod-application family with colod-application family, second, described first with colod-application family and second with cold subscriber multiple, confession water system
System output chilled water flow into first with colod-application family for this first with colod-application family use；Confess the chilled water and the of water system output
Two be mixed into the second temperature needed for colod-application family with the return water at colod-application family itself after flow into second with colod-application family, for this second
Colod-application family uses, first collected with the return water at colod-application family and second with the return water at colod-application family after for the use of second level cold equipment.Two
Grade cold equipment 10 includes the colod-application family of third, the 4th with colod-application family, the colod-application family of the third and the 4th with cold subscriber multiple,
First collected with the return water at colod-application family and second with the return water at colod-application family after flow into third with colod-application family for the colod-application family of the third
It uses；First is mixed into the 4th with colod-application with the return water at colod-application family with the return water at colod-application family, the 4th with the return water at colod-application family, second
After temperature needed for family, used for the 4th with colod-application family, third is collected with the 4th with the return water at colod-application family with the return water at colod-application family
After flow into return water system.
The both ends of level-one cold equipment 8 are also parallel with water supply side bypass pipe 16, the chilled water of self-water-supplying system superintendent output
Enter second level cold equipment 10 after can mixing with the water outlet of level-one cold equipment 8, is used for second level cold equipment 10.Second level is with cold
The both ends of equipment 10 are also parallel with return water side bypass pipe 17, and the return water of level-one cold equipment 8 can partially flow through return water side bypass pipe
17, which enter return water system, is responsible for.Water supply side bypass line and return water side bypass line are to enter second level cold equipment 10 for adjusting
Chilled water temperature and flow.For example the leaving water temperature of level-one cold equipment is higher than second level cold equipment required temperature, then needs
Water supply side bypass pipe is wanted to fill into low-temperature cold water, flow needed for for another example the water flow of level-one cold equipment is higher than secondary user, then
It needs to be returned directly to from return water side bypass pipe a part of in main water return tube.Water supply side bypass line and return water side bypass pipe this two
Electric control valve should be all set on pipeline.
End-equipment is gone here and there according to the guiding theory of cascaded utilization of energy using level-one cold equipment 8, second level cold equipment 10
The form of connection, and the mixed water ratio of water force (forcing) pump is mixed to adjust chilled water supply water temperature by adjusting end, it can meet well not
Demand with terminal temperature difference to chilled water supply water temperature realizes that a set of pipe network, which is used only, can meet different chilled water supply water temperatures
Requirement, be widely used in the system that end-equipment has diversity requirements to chilled water supply water temperature, initial cost is small, applicability
By force.
Since air conditioning water supplies, the increase of backwater temperature difference makes to supply, water return amount is greatly lowered, air conditioning water circulating pump
5 power decreases, by taking 2oC water supply 18oC return water as an example, temperature difference 16oC, the 5oC with conventional 7oC water supply 12oC return water
The temperature difference is compared, and flow can reduce 70% or so, and main pump power is greatly lowered, and system conveying energy consumption is greatly lowered.And this
Many heat exchangers and regulating valve are eliminated in system, further reduced main pump power, and the reduction of system conveying energy consumption is helped
It is very big.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. the air conditioning water system of a kind of multi-stage refrigerating and end cascaded utilization of energy characterized by comprising fill ice-reserving
The chilled water in (4) is set to be delivered to the water system of air conditioner end equipment, the return water in air conditioner end equipment is delivered to ice-reserving
The return water system to cool down in device (4), the return water system includes: water return pipeline, be arranged on water return pipeline first
Refrigeration machine (2) and refrigerated heat exchanger (3), the return water of the return water system first flow through the first refrigeration machine (2) and carry out level-one cooling, again
It flows through refrigerated heat exchanger (3) and carries out second level cooling, finally import and carry out three-level cooling inside ice storage unit (4), the ice-reserving dress
It sets the return water after (4) cool down second level and is processed into chilled water, which enters water system makes again for air conditioner end equipment
With；Return water temperature through the first refrigeration machine (2) outflow is lower than 18 DEG C.
2. the air conditioning water system of multi-stage refrigerating according to claim 1 and end cascaded utilization of energy, feature exist
In further including the second refrigeration machine (6), be placed with Ice storage coiled pipe in the ice storage unit (4), the Ice storage coiled pipe and the second refrigeration machine
(6) it is connected to；The Ice storage coiled pipe is immersed in ice storage unit (4), for freezing the water in ice storage unit (4).
3. the air conditioning water system of multi-stage refrigerating according to claim 2 and end cascaded utilization of energy, feature exist
In equipped with cooling supply pipeline and time cold pipeline, the Ice storage coiled pipe, cooling supply pipe between the Ice storage coiled pipe and the second refrigeration machine (6)
The circulation loop for being formed between cold pipeline, the second refrigeration machine (6) and being used to recycle low temperature refrigerating medium is returned on road；
The confession, time cold pipeline are also connected with refrigerated heat exchanger (3), and refrigerated heat exchanger (3) is pass in parallel with ice storage unit (4)
System, the low temperature refrigerating medium flowed through in the refrigerated heat exchanger (3) carry out hot friendship with the return water for flowing through the refrigerated heat exchanger (3)
It changes, to reduce the temperature of return water.
4. the air conditioning water system of multi-stage refrigerating according to claim 3 and end cascaded utilization of energy, feature exist
It in, the cooling supply pipeline and returns between cold pipeline and is connected with connecting line, the connecting line is equipped with switching valve.
5. the air conditioning water system of multi-stage refrigerating according to claim 1 and end cascaded utilization of energy, feature exist
In the air conditioner end equipment includes level-one cold equipment (8) and second level cold equipment (10), the level-one cold equipment (8)
Chilled water temperature needed for required chilled water temperature is lower than second level cold equipment (10), the level-one cold equipment (8) and two
Grade cold equipment (10) is connected, so that chilled water just enters second level cold equipment (10) after flowing through level-one cold equipment (8).
6. the air conditioning water system of multi-stage refrigerating according to claim 5 and end cascaded utilization of energy, feature exist
In the both ends of the level-one cold equipment (8) are also parallel with water supply side bypass pipe (16), the freezing of self-water-supplying system superintendent output
Water enters second level cold equipment (10) after can mixing with the water outlet of level-one cold equipment (8), uses for second level cold equipment (10).
7. the air conditioning water system of multi-stage refrigerating according to claim 5 and end cascaded utilization of energy, feature exist
In the both ends of the second level cold equipment (10) are also parallel with return water side bypass pipe (17), and the return water of level-one cold equipment (8) can
Return water side bypass pipe (17) is flowed through into return water system supervisor in part.
8. according to the described in any item multi-stage refrigeratings of claim 5-7 and the air conditioning water system of end cascaded utilization of energy,
It is characterized in that, the level-one cold equipment (8) include first with colod-application family, second with colod-application family, described first with colod-application family
With second with cold subscriber multiple；
The second level cold equipment (10) includes the colod-application family of third, the 4th with colod-application family, the third colod-application family and the 4th
With cold subscriber multiple.
9. the air conditioning water system of multi-stage refrigerating according to claim 8 and end cascaded utilization of energy, feature exist
In, described first collected with the return water at colod-application family and second with the return water at colod-application family after used for second level cold equipment (10), the
Three collected with the return water at colod-application family and the 4th with the return water at colod-application family after flow into return water system.
10. the air conditioning water system of multi-stage refrigerating according to claim 8 and end cascaded utilization of energy, feature exist
In, confession water system output chilled water flow into first with colod-application family for this first with colod-application family use；
The chilled water and second of confession water system output is mixed into the second temperature needed for colod-application family with the return water at colod-application family itself
After degree flow into second use colod-application family, for this second with colod-application family use；
First collected with second with the return water at colod-application family with the return water at colod-application family after flow into third it is cold for the third with colod-application family
User uses；
First is mixed into the 4th with colod-application with the return water at colod-application family with the return water at colod-application family, the 4th with the return water at colod-application family, second
After temperature needed for family, used for the 4th with colod-application family.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969653.9A CN109282399A (en) | 2018-08-23 | 2018-08-23 | A kind of air conditioning water system of multi-stage refrigerating and end cascaded utilization of energy |
| PCT/CN2018/114682 WO2020037843A1 (en) | 2018-08-23 | 2018-11-09 | Air conditioner cooling water system for multi-stage cooling and cascade utilization of terminal energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969653.9A CN109282399A (en) | 2018-08-23 | 2018-08-23 | A kind of air conditioning water system of multi-stage refrigerating and end cascaded utilization of energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109282399A true CN109282399A (en) | 2019-01-29 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810969653.9A Pending CN109282399A (en) | 2018-08-23 | 2018-08-23 | A kind of air conditioning water system of multi-stage refrigerating and end cascaded utilization of energy |
Country Status (2)
| Country | Link |
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| CN (1) | CN109282399A (en) |
| WO (1) | WO2020037843A1 (en) |
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| CN109612059A (en) * | 2018-12-04 | 2019-04-12 | 中国建筑西北设计研究院有限公司 | A kind of novel air conditioner water distributing system |
| CN109945271A (en) * | 2019-04-25 | 2019-06-28 | 中能服能源科技股份有限公司 | A kind of big temperature difference multizone mixing heating system of difference heat supply temperature and pressure |
| CN110057065A (en) * | 2019-05-24 | 2019-07-26 | 浙江大冲能源科技有限公司 | A kind of differentiation temperature and balance control device based on functional region |
| CN110057064A (en) * | 2019-05-20 | 2019-07-26 | 浙江大冲能源科技有限公司 | A kind of combined air conditioner unit high-efficiency energy-saving control based on single cold source |
| CN114698327A (en) * | 2020-12-31 | 2022-07-01 | 河北思达歌数据科技投资有限公司 | Multistage refrigeration system and refrigeration method |
| CN117440671A (en) * | 2023-12-21 | 2024-01-23 | 福建省江南冷却科技有限公司 | Cooling system of intelligent mining equipment unit and control method thereof |
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| CN114791133A (en) * | 2022-04-01 | 2022-07-26 | 杭州龙华环境集成***有限公司 | Cooling module of high-efficient intelligent cold source of central air conditioning |
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|---|---|
| WO2020037843A1 (en) | 2020-02-27 |
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