CN113483423B - Anti-condensation capillary pipe network cold radiation ceiling system and working method thereof - Google Patents

Anti-condensation capillary pipe network cold radiation ceiling system and working method thereof Download PDF

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Publication number
CN113483423B
CN113483423B CN202110929485.2A CN202110929485A CN113483423B CN 113483423 B CN113483423 B CN 113483423B CN 202110929485 A CN202110929485 A CN 202110929485A CN 113483423 B CN113483423 B CN 113483423B
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water
air
capillary network
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ports
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CN113483423A (en
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丁业凤
冯劲梅
蔡加熙
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Shanghai Institute of Technology
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Shanghai Institute of Technology
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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
    • F24F5/0003—Exclusively-fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • 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
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an anti-condensation capillary network cold radiation ceiling system which comprises a capillary network cold radiation device, a rotating wheel dehumidification device and a water chilling unit, wherein the water chilling unit is communicated with the capillary network cold radiation device and the rotating wheel dehumidification device; the air inlet pipe is sequentially provided with a first air pump, a dehumidification rotating wheel, a sensible heat exchanger and a first surface air cooler; the exhaust pipe is sequentially provided with a second surface air cooler, a sensible heat exchanger, an air heater, a dehumidification rotating wheel and a second air pump; the air inlet pipe and the air outlet pipe are respectively connected with a processing area and a regeneration area of the dehumidification rotating wheel and respectively connected with a fresh air channel and an air outlet channel of the sensible heat exchanger; the first surface cooler and the second surface cooler are respectively connected with the water chilling unit through a first circulating pipeline and a second circulating pipeline, and a water inlet and a water return port at two ends of the first circulating pipeline and a water inlet and a water return port at two ends of the second circulating pipeline are respectively communicated with a water outlet and a water return port of the water chilling unit; the system can provide partial cold energy indoors while solving the problem of condensation, and creates a more comfortable working and living environment for indoor personnel.

Description

Anti-condensation capillary network cold radiation ceiling system and working method thereof
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to an anti-condensation capillary network cold radiation ceiling system and a working method thereof.
Background
With the continuous development of economic society, building energy consumption is a general concern, and reducing air conditioner energy consumption is one of effective measures for building energy conservation. As a novel air conditioning system, the capillary network cold radiation ceiling air conditioning system mainly uses a radiation cooling form to provide cold quantity indoors, and the capillary network radiation cooling has the advantages of uniform indoor temperature distribution, small occupied building space, simplicity in installation and maintenance, no indoor noise and the like, and has remarkable advantages in the aspects of improving indoor thermal comfort, saving energy and the like.
In the application process of the capillary network cold radiation ceiling air conditioning system, the problem of condensation on the surface of the cold radiation plate ceiling occurs, and particularly under the conditions that the capillary network cold radiation ceiling air conditioning system is used in hot and humid areas in summer, a room is opened, air permeation occurs and the like, the condensation on the surface of the cold radiation plate ceiling is obvious, the refrigeration efficiency of the system is reduced, the indoor sanitary environment is poor, bacteria are easy to breed and the like, so that the problem of condensation of the capillary network cold radiation ceiling air conditioning system is a problem to be solved in the further development of the air conditioning form.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an anti-condensation capillary network cold radiation ceiling system and a working method thereof.
In order to realize the purpose, the technical scheme of the invention is as follows:
an anti-condensation capillary network cold radiation ceiling system comprises a capillary network cold radiation device, a rotating wheel dehumidification device and a water chilling unit, wherein the water chilling unit is communicated with the capillary network cold radiation device and the rotating wheel dehumidification device;
the rotating wheel dehumidification device comprises an air inlet pipe and an air outlet pipe, wherein the outlet of the air inlet pipe is connected to an indoor air inlet, and the inlet of the air outlet pipe is connected to an indoor air outlet;
the air inlet pipe is sequentially provided with a first air pump, a dehumidification rotating wheel, a sensible heat exchanger and a first surface air cooler from an inlet to an outlet of the air inlet pipe;
the exhaust pipe is sequentially provided with a second surface air cooler, the sensible heat exchanger, an air heater, the dehumidifying rotating wheel and a second air pump from an inlet to an outlet of the exhaust pipe;
the air inlet pipe and the air outlet pipe are respectively connected with a processing area and a regeneration area of the dehumidification rotating wheel and respectively connected with a fresh air channel and an air outlet channel of the sensible heat exchanger;
the first surface cooler and the second surface cooler are respectively connected with the water chilling unit through a first circulating pipeline and a second circulating pipeline, a water inlet and a water return port at two ends of the first circulating pipeline and a water inlet and a water return port at two ends of the second circulating pipeline are respectively communicated with a water outlet and a water return port of the water chilling unit, and a first water pump and a second water pump are respectively arranged on the first circulating pipeline and the second circulating pipeline;
when the water chilling unit works, cold water is provided for the capillary network cold radiation device, the first surface cooler and the second surface cooler by the water chilling unit, and the capillary network cold radiation device carries out radiation refrigeration to the room; the first air pump pumps fresh air from the outside to make the fresh air enter the room through the air inlet pipe, and the second air pump pumps indoor exhaust air to make the fresh air be exhausted out of the room through the exhaust pipe.
According to an embodiment of the present invention, a first stop valve is disposed on the air inlet pipe between the desiccant rotor and the sensible heat exchanger, a butterfly valve is disposed between the first surface cooler and the air inlet, and a second stop valve is disposed at an outlet of the exhaust pipe.
According to an embodiment of the present invention, a first temperature sensor is disposed on the air inlet pipe between the butterfly valve and the air inlet.
According to an embodiment of the present invention, the capillary network cold radiation device comprises:
the radiation tail end of the capillary network is arranged in the chamber;
a heat exchanger;
the third circulating pipeline is arranged on one side of the heat exchanger, and a water inlet and a water return port at two ends of the third circulating pipeline are respectively communicated with a water outlet and a water return port of the water chilling unit;
the fourth circulating pipeline is arranged on the other side of the heat exchanger, two ends of the fourth circulating pipeline are respectively communicated with the water inlet and the water outlet of the radiation tail end of the capillary network, and the fourth circulating pipeline is internally provided with the cold water;
and the third water pump is arranged on the fourth circulating pipeline.
According to an embodiment of the invention, the heat exchanger is a plate heat exchanger.
According to an embodiment of the present invention, comprises:
the water distributor is provided with four ports, the port a of the water distributor is a water inlet port and is communicated with a water outlet of the water chilling unit, and the ports b, c and d of the water distributor are water outlet ports;
the water collector is provided with four ports, the port a of the water collector is a water outlet port and is communicated with a water return port of the water chilling unit, and the ports b, c and d of the water collector are water inlet ports;
the water inlets of the first circulating pipeline, the second circulating pipeline and the third circulating pipeline are respectively communicated with ports b, c and d of the water separator, and the water return port is respectively communicated with ports b, c and d of the water collector.
According to an embodiment of the present invention, the method includes:
the humidity sensor is arranged at the air outlet in the room;
the first temperature regulating valve is arranged on the water return pipeline of the first circulating pipeline;
and the second temperature regulating valve is arranged on the water return pipeline of the second circulating pipeline.
According to an embodiment of the present invention, comprises:
the second temperature sensor is arranged on a water inlet pipeline of the fourth circulating pipeline;
the third temperature sensor is arranged on a water return pipeline of the fourth circulating pipeline;
the fourth temperature sensor is arranged indoors;
the three-way valve is arranged on a water inlet pipeline of the fourth circulating pipeline and is positioned between the heat exchanger and the second temperature sensor, ports a and b of the three-way valve are connected to the water inlet pipeline of the fourth circulating pipeline, and a port c of the three-way valve is communicated with a water return pipeline of the fourth circulating pipeline through a pipeline;
the two ends of the first electromagnetic valve are communicated with a water inlet pipeline and a water return pipeline of the third circulating pipeline through pipelines;
and the second electromagnetic valve is arranged on the water inlet pipeline of the third circulating pipeline and is positioned between the first electromagnetic valve and the heat exchanger.
According to an embodiment of the present invention, the controller comprises a hollow control system module electrically connected to the humidity sensor, the first temperature regulating valve, the second temperature sensor, the third temperature sensor, the fourth temperature sensor, the three-way valve, the first solenoid valve and the second solenoid valve.
An operating method for controlling the anti-dewing capillary network cold radiation ceiling system according to the embodiment comprises three operation modes:
a rapid cooling mode: the first electromagnetic valve, the port b of the water collector and the port b of the water separator are closed, the ports a, c and d of the water collector, the ports a, c and d of the water separator, the first water pump and the second water pump are opened, cold water enters the port a of the water separator from a water outlet of the water chilling unit and then respectively enters the first surface air cooler and the second surface air cooler through the ports c and d of the water separator for heat exchange;
the first air pump, the first stop valve, the butterfly valve, the second air pump and the second stop valve are opened, the first air pump pumps outside fresh air to enable the fresh air to be dehumidified by the dehumidifying rotating wheel, cooled by heat exchange with exhaust air through the sensible heat exchanger, cooled by heat exchange with cold water through the first surface air cooler, and finally enters the room from the air inlet; the second air pump pumps indoor exhaust air to ensure that the indoor exhaust air is sequentially subjected to heat exchange with cold water for cooling through the second surface air cooler, heat exchange with fresh air for heating through the sensible heat exchanger, heating through the air heater, moisture absorption of the dehumidification rotating wheel for humidification and finally exhausted to the outside;
high-efficiency refrigeration dehumidification mode: the first electromagnetic valve, the port b of the water collector and the port b of the water separator are closed, and the ports a, c and d of the water collector and the ports a, c and d of the water separator are opened;
the first air pump, the first stop valve, the butterfly valve, the second air pump, and the second stop valve are open;
when the central control system module receives that the temperature value of the fourth temperature sensor is lower than the indoor dew point temperature value, controlling the first electromagnetic valve, the port b of the water collector and the port b of the water separator to be opened, the ports b and c of the three-way valve are opened, the cold water enters the port a of the water separator from the water chilling unit, the cold water enters the heat exchanger through the port b of the water separator for heat exchange, the cold water enters the radiation tail end of the capillary network through the ports a and b of the three-way valve for cooling, the numerical value measured by the second temperature sensor is transmitted to the central control system module, the central control system module adjusts the opening degree of the first electromagnetic valve and the second electromagnetic valve, the water supply temperature of the radiation tail end of the capillary network is controlled, and the return water of the radiation tail end of the capillary network enters the heat exchanger for circulation;
a refrigeration sleep mode: the first electromagnetic valve is closed, ports a, b, c and d of the water collector, ports a, b, c and d of the water separator and ports b and c of the three-way valve are opened;
the first air pump, the first stop valve, the butterfly valve, the second air pump and the second stop valve are opened;
when the central control system module receives that the numerical value of the humidity sensor is lower than a set value, the central control system module controls the third water pump to operate, and cold water circulates in the radiation tail end of the capillary network;
when the central control system module receives that the numerical value of the second temperature sensor is higher than a set value, opening an a port of the three-way valve, and enabling the cold water to enter the radiation tail end of the capillary network through a port a and a port b of the three-way valve for refrigeration;
when the central control system module receives that the temperature values of the second temperature sensor and the third temperature sensor are smaller than a temperature difference set value, the ports a of the first electromagnetic valve and the three-way valve are controlled to be closed, and the cold water circulates at the radiation tail end of the capillary network.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
(1) according to the embodiment of the invention, the capillary network cold radiation device and the rotary wheel dehumidification device are arranged, low-temperature dry fresh air is provided for the room through the rotary wheel dehumidification device, cold energy is provided for the room through the capillary network cold radiation device, and the problem of condensation on the surface of the indoor cold radiation ceiling metal plate is solved. Meanwhile, partial cold energy is provided indoors, and a more comfortable working and living environment is created for indoor personnel.
Drawings
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings, in which:
fig. 1 is an overall schematic view of the present invention.
Description of the reference numerals:
1: a first air pump; 2: a dehumidification rotating wheel; 3: a first shut-off valve; 4: a sensible heat exchanger; 5: a first surface air cooler; 6: a butterfly valve; 7: a first temperature sensor; 8: a second surface air cooler; 9: an air heater; 10: a second air pump; 11: a second stop valve; 12: a second water pump; 13: a second temperature regulating valve; 14: a hollow control system module; 15: a water chilling unit; 16: a first temperature regulating valve; 17: a first water pump; 18: a water collector; 19: a water separator; 20: a first solenoid valve; 21: a second solenoid valve; 22: a heat exchanger; 23: a three-way valve; 24: a third water pump; 25: a second temperature sensor; 26: a third temperature sensor; 27: a capillary network radiation end; 28: a fourth temperature sensor; 29: a humidity sensor; 30: an air inlet pipe; 31: an exhaust duct; 32: a first circulation line; 33: a second circulation line; 34: a third circulation line; 35: a fourth circulation line.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are each provided with a non-precise ratio for the purpose of facilitating and clearly facilitating the description of the embodiments of the present invention.
It should be noted that all directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Example 1
Referring to fig. 1, the core of the invention is to provide an anti-dewing capillary network cold radiation ceiling system, which comprises a capillary network cold radiation device, a rotating wheel dehumidification device and a water chilling unit 15 communicated with the capillary network cold radiation device and the rotating wheel dehumidification device.
The water chilling unit 15 is used for providing cold water for heat exchange and temperature reduction for the capillary network cold radiation device and the rotating wheel dehumidification device.
The rotary wheel dehumidification device comprises an air inlet pipe 30 and an air outlet pipe 31, wherein the outlet of the air inlet pipe 30 is connected with an indoor air inlet, and the inlet of the air outlet pipe 31 is connected with an indoor air outlet.
The air inlet pipe 30 is provided with a first air pump 1, a dehumidifying rotating wheel 2, a first stop valve 3, a sensible heat exchanger 4, a first surface cooler 5, a butterfly valve 6 and a first temperature sensor 7 in sequence from an inlet to an outlet thereof. And the air inlet pipe 30 is connected with the processing area of the dehumidifying rotating wheel 2 and the fresh air channel of the sensible heat exchanger 4.
The exhaust duct 31 is provided with a second surface air cooler 8, a sensible heat exchanger 4, an air heater 9, a desiccant rotor 2, a second air pump 10 and a second stop valve 11 in sequence from an inlet to an outlet thereof. And the exhaust duct 31 is connected to the regeneration zone of the desiccant rotor 2 and to the exhaust flow path of the sensible heat exchanger 4. A humidity sensor 29 is also arranged at the air outlet of the room.
First surface cooler 5 is connected with cooling water set 15 through first circulation pipeline 32, and the water inlet and the return water mouth at first circulation pipeline 32 both ends communicate cooling water set 15's delivery port and return water mouth respectively, and just first circulation pipeline 32 divide into water inlet pipe and return water pipeline, and the water inlet of first circulation pipeline 32 is located water inlet pipe's front end, the end of return water pipeline is located to the return water mouth. A first water pump 17 for pumping cold water is arranged on the water inlet pipeline of the first circulating pipeline 32, and a first temperature regulating valve 16 is arranged on the water return pipeline.
The second surface cooler 8 is connected with the water chilling unit 15 through a second circulation pipeline 33, a water inlet and a water return port at two ends of the second circulation pipeline 33 are respectively communicated with a water outlet and a water return port of the water chilling unit 15, the second circulation pipeline 33 is divided into a water inlet pipeline and a water return pipeline, and the water inlet of the second circulation pipeline 33 is arranged at the front end of the water inlet pipeline and the water return port is arranged at the tail end of the water return pipeline. A second water pump 12 for pumping cold water is arranged on the water inlet pipeline of the second circulating pipeline 33, and a second temperature regulating valve 13 is arranged on the water return pipeline.
The first air pump 1 is used for pumping outside fresh air to enable the fresh air to enter the air inlet pipe 30, firstly, the fresh air passes through the processing area of the dehumidifying rotating wheel 2, moisture in the fresh air is absorbed by the drying agent in the processing area, the humidity is reduced, and the temperature is raised due to the effect of adsorption heat of the drying agent.
Then, the fresh air enters a fresh air flow channel of the sensible heat exchanger 4 after the flow of the fresh air is regulated by the first stop valve 3, the sensible heat exchanger 4 is an air precooling processor for drying hot fresh air, the drying hot fresh air exchanges heat with the exhaust air passing through an exhaust air flow channel of the sensible heat exchanger 4 in the sensible heat exchanger 4, and most of heat is transferred to exhaust air flow so as to be precooled in the sensible heat exchanger 4.
The precooled dry fresh air discharged from the outlet of the sensible heat exchanger 4 enters the first surface cooler 5, is cooled again after exchanging heat with cold water through the first surface cooler 5, and is treated to be in a low-temperature and low-humidity state, and the low-temperature dry fresh air is sent into a room through the air inlet after passing through the butterfly valve 6 and the first temperature sensor 7.
The second air pump 10 is used for pumping air from the indoor air outlet to form exhaust air, and simultaneously the second stop valve 11 is opened, the exhaust air firstly passes through the second surface air cooler 8, is cooled and cooled after exchanging heat with cold water, the low-temperature exhaust air enters the exhaust air flow passage of the sensible heat exchanger 4 to exchange heat with fresh air in the fresh air flow passage, the exhaust air takes away most of heat of the fresh air to raise the temperature, then the exhaust air is heated to a high-temperature state through the air heater 9 and enters the regeneration area of the dehumidifying rotating wheel 2, the high-temperature exhaust air passes through moist desiccant particles, moisture adsorbed on the desiccant is evaporated in the processing path of the high-temperature exhaust air passing through the desiccant particles, the exhaust air takes away the moisture, the desiccant is regenerated, the regenerated desiccant is used for the next drying and dehumidifying work of the dehumidifying rotating wheel 2, and finally, the flow is regulated through the second stop valve 11 under the driving of the second air pump 10, and exhausting the cooled and humidified exhaust air to the outside.
The capillary network cold radiation device comprises a capillary network radiation end 27, a heat exchanger 22, a third circulation pipeline 34, a fourth circulation pipeline 35 and a third water pump 24. The capillary network radiating end 27 is located indoors and the heat exchanger 22 is a plate heat exchanger in this embodiment.
The third circulation pipeline 34 is disposed at one side of the heat exchanger 22, and a water inlet and a water return port at two ends of the third circulation pipeline are respectively communicated with a water outlet and a water return port of the water chilling unit 15. The fourth circulation pipeline 35 is arranged at the other side of the heat exchanger 22, two ends of the fourth circulation pipeline are respectively communicated with the water inlet and the water outlet of the capillary network radiation tail end 27, and cold water is arranged in the fourth circulation pipeline 35.
The third water pump 24 is provided on a water inlet line of the fourth circulation line 35. A second temperature sensor 25 is further arranged on the water inlet pipeline of the fourth circulating pipeline 35, and a third temperature sensor 26 is arranged on the water return pipeline of the fourth circulating pipeline 35. A fourth temperature sensor 28 is also provided in the chamber at the radiating end 27 of the capillary network.
A three-way valve 23, a first solenoid valve 20 and a second solenoid valve 21 are also included. The three-way valve 23 is arranged on a water inlet pipeline of the fourth circulating pipeline 35 and is positioned between the heat exchanger 22 and the second temperature sensor 25, ports a and b of the three-way valve 23 are connected to the water inlet pipeline of the fourth circulating pipeline 35, and ports c of the three-way valve are communicated with a water return pipeline of the fourth circulating pipeline 35 through pipelines.
Both ends of the first electromagnetic valve 20 are communicated with a water inlet pipeline and a water return pipeline of the third circulation pipeline 34 through pipelines. The second electromagnetic valve 21 is disposed on the water inlet pipeline of the third circulation pipeline 34 and between the first electromagnetic valve 20 and the heat exchanger 22.
A water separator 19 and a water collector 18 are also included. The water separator 19 is provided with four ports, a port a of the water separator 19 is a water inlet port and is communicated with a water outlet of the water chilling unit 15, and ports b, c and d of the water separator 19 are water outlet ports. The water inlets of the first circulation line 32, the second circulation line 33 and the third circulation line 34 are respectively communicated with ports b, c and d of the water separator 19.
The water collector 18 is provided with four ports, a port a of the water collector 18 is a water outlet port and is communicated with a water return port of the water chilling unit 15, and ports b, c and d of the water collector 18 are water inlet ports. The return ports of the first circulation line 32, the second circulation line 33, and the third circulation line 34 communicate with ports b, c, and d of the sump 18, respectively.
The air conditioner further comprises a hollow control system module 14 which is electrically connected with a humidity sensor 29, a first temperature regulating valve 16, a second temperature regulating valve 13, a second temperature sensor 25, a third temperature sensor 26, a fourth temperature sensor 28, a three-way valve 23, a first electromagnetic valve 20 and a second electromagnetic valve 21.
Example 2
Another core of the present invention is to provide a method of operation for controlling the anti-dewing capillary network cold radiation ceiling system of example 1, comprising three modes of operation:
a rapid cooling mode:
the central control system module performs refrigerating operation, the first electromagnetic valve 20, the port b of the water collector 18 and the port b of the water separator 19 are closed, the ports a, c and d of the water collector 18, the ports a, c and d of the water separator 19, the first water pump 17 and the second water pump 12 are opened, cold water enters the port a of the water separator 19 from a water outlet of the water chilling unit 15, and then enters the first surface air cooler 5 and the second surface air cooler 8 through the ports c and d of the water separator 19 to perform heat exchange.
The first air pump 1, the first stop valve 3, the butterfly valve 6, the second air pump 10 and the second stop valve 11 are started, the first air pump 1 pumps external fresh air to enable the fresh air to be dehumidified by the dehumidifying rotating wheel 2, cooled by heat exchange with exhaust air through the sensible heat exchanger 4, cooled by heat exchange with cold water through the first surface cooler 5, and finally enters the room from the air inlet; the second air pump 10 pumps indoor exhaust air to make the exhaust air exchange with cold water through the second surface air cooler 8 to reduce temperature, exchange with fresh air through the sensible heat exchanger 4 to raise temperature, raise temperature through the air heater 9, absorb moisture through the dehumidifying wheel 2 to humidify, and finally discharge the exhaust air to the outdoor.
The temperature sensor 7 measures the temperature value of the supplied air of the fresh air and transmits the value to the central control system module, the central control system module sends an instruction to adjust the water flow of the first surface air cooler 5 and control the temperature of the fresh air, and the speed of the supplied air of the fresh air is controlled by the adjusting butterfly valve 6.
High-efficiency refrigeration dehumidification mode:
and (3) refrigerating operation of the central control system module, closing the first electromagnetic valve 20, the port b of the water collector 18 and the port b of the water separator 19, opening the ports a, c and d of the water collector 18 and opening the ports a, c and d of the water separator 19.
The first air pump 1, the first stop valve 3, the butterfly valve 6, the second air pump 10 and the second stop valve 11 are opened, and the desiccant rotor 2 is operated.
When the central control system module receives that the temperature value of the fourth temperature sensor 28 is lower than the indoor dew point temperature value, controlling the opening of the first electromagnetic valve 20, the opening b of the water collector 18 and the opening b of the water separator 19, opening the opening b and the opening c of the three-way valve 23, leading cold water to enter the opening a of the water separator 19 from the water chilling unit 15, enters the heat exchanger 22 through the port b of the water separator 19 for heat exchange, cold water enters the radiation tail end 27 of the capillary network for cooling through the ports a and b of the three-way valve 23, and the end a of the three-way valve 23 is gradually opened in proportion to control the water supply flow of the capillary network radiation tail end 27, the numerical value measured by the second temperature sensor 25 is transmitted to the central control system module, the central control system module adjusts the opening degree of the first electromagnetic valve 20 and the second electromagnetic valve 21, to control the temperature of the water supply at the radiant end 27 of the capillary network, and the return water at the radiant end 27 of the capillary network enters the heat exchanger 22 for circulation.
A refrigeration sleep mode:
the central control system module performs cooling operation, the first electromagnetic valve 20 is closed, the ports a, b, c and d of the water collector 18, the ports a, b, c and d of the water separator 19 and the ports b and c of the three-way valve 23 are opened.
The first air pump 1, the first stop valve 3, the butterfly valve 6, the second air pump 10 and the second stop valve 11 are opened, and the desiccant rotor 2 is operated. The cold water enters the first surface cooler 5 for heat exchange and then enters the end c of the water collector 18 through the first temperature regulating valve 16.
When the central control system module receives that the value of the humidity sensor 29 is lower than the set value, the third water pump 24 is controlled to operate, and cold water circulates in the radiation tail end 27 of the capillary network.
When the central control system module receives that the numerical value of the second temperature sensor 25 is higher than the set value, the port a of the three-way valve 23 is controlled to be opened gradually according to the proportion, cold water enters the capillary network radiation tail end 27 through the ports a and b of the three-way valve 23 to be refrigerated, and return water of the capillary network radiation tail end 27 enters the heat exchanger 22 to circulate in sequence.
When the central control system module receives that the temperature values of the second temperature sensor 25 and the third temperature sensor 26 are less than the set temperature difference value, the ports a of the first electromagnetic valve 20 and the three-way valve 23 are controlled to be closed, and cold water circulates at the radiation tail end 27 of the capillary network.
The invention adopts the capillary network cold radiation device and the rotating wheel dehumidification device, and the capillary network cold radiation device is used for processing indoor sensible heat and providing cold energy for the indoor. Latent heat and all moisture loads are borne by the rotary wheel dehumidification device so as to provide low-temperature dry fresh air indoors. The problems of poor indoor environmental sanitation condition, easy mold breeding and the like caused by the dewing of the conventional cold radiation ceiling are solved.
The dehumidification runner 2 is mainly used for cooling and dehumidifying outdoor high-temperature and high-humidity air in summer, and then the air is sent into a target room after being reprocessed by the sensible heat exchanger 4 and the first surface air cooler 5. Meanwhile, different air supply modes can be realized by combining a capillary network cold radiation device and through reasonable operation control, low-temperature and low-humidity fresh air is supplied indoors, and a suitable indoor thermal environment is created. Through different system operation modes, the problem of condensation on the surface of the capillary network cold radiation ceiling radiation plate can be solved, and meanwhile, extra cold energy is provided for the indoor building environment.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.

Claims (9)

1. An anti-dewing capillary network cold radiation ceiling system is characterized by comprising a capillary network cold radiation device, a rotating wheel dehumidification device and a water chilling unit communicated with the capillary network cold radiation device and the rotating wheel dehumidification device;
the rotating wheel dehumidification device comprises an air inlet pipe and an air outlet pipe, wherein the outlet of the air inlet pipe is connected to an indoor air inlet, and the inlet of the air outlet pipe is connected to an indoor air outlet;
the air inlet pipe is sequentially provided with a first air pump, a dehumidifying rotating wheel, a sensible heat exchanger and a first surface air cooler from an inlet to an outlet of the air inlet pipe;
the exhaust pipe is sequentially provided with a second surface air cooler, the sensible heat exchanger, an air heater, the dehumidifying rotating wheel and a second air pump from an inlet to an outlet of the exhaust pipe;
the air inlet pipe and the air outlet pipe are respectively connected with the processing area and the regeneration area of the dehumidification rotating wheel, and are respectively connected with the fresh air channel and the air outlet channel of the sensible heat exchanger;
the first surface cooler and the second surface cooler are respectively connected with the water chilling unit through a first circulating pipeline and a second circulating pipeline, a water inlet and a water return port at two ends of the first circulating pipeline and a water inlet and a water return port at two ends of the second circulating pipeline are respectively communicated with a water outlet and a water return port of the water chilling unit, and a first water pump and a second water pump are respectively arranged on the first circulating pipeline and the second circulating pipeline;
when the water chilling unit works, cold water is provided for the capillary network cold radiation device, the first surface cooler and the second surface cooler by the water chilling unit, and the capillary network cold radiation device carries out radiation refrigeration to the room; the first air pump pumps fresh air from the outside to make the fresh air enter the room through the air inlet pipe, and the second air pump pumps indoor exhaust air to make the fresh air be exhausted out of the room through the exhaust pipe;
the capillary network cold radiation device comprises:
the radiation tail end of the capillary network is arranged in the chamber;
a heat exchanger;
the third circulating pipeline is arranged on one side of the heat exchanger, and a water inlet and a water return port at two ends of the third circulating pipeline are respectively communicated with a water outlet and a water return port of the water chilling unit;
the fourth circulating pipeline is arranged on the other side of the heat exchanger, two ends of the fourth circulating pipeline are respectively communicated with the water inlet and the water outlet of the radiation tail end of the capillary network, and the fourth circulating pipeline is internally provided with the cold water;
the third water pump is arranged on the fourth circulating pipeline;
the three-way valve is arranged on the water inlet pipeline of the fourth circulating pipeline, ports a and b of the three-way valve are connected to the water inlet pipeline of the fourth circulating pipeline, and the port c is communicated with the water return pipeline of the fourth circulating pipeline through a pipeline.
2. The anti-dewing capillary network cold radiation ceiling system as claimed in claim 1, wherein a first stop valve is arranged on the air inlet pipe between the dehumidification runner and the sensible heat exchanger, a butterfly valve is arranged between the first surface cooler and the air inlet, and a second stop valve is arranged at an outlet of the exhaust pipe.
3. The anti-dewing capillary network cold radiation ceiling system as claimed in claim 2, wherein a first temperature sensor is provided on the air inlet pipe between the butterfly valve and the air inlet.
4. The anti-dewing capillary network cold radiation ceiling system as claimed in claim 1, wherein the heat exchanger is a plate heat exchanger.
5. The anti-dewing capillary network cold radiation ceiling system of claim 2, comprising:
the water distributor is provided with four ports, the port a of the water distributor is a water inlet port and is communicated with the water outlet of the water chilling unit, and the ports b, c and d of the water distributor are water outlet ports;
the water collector is provided with four ports, the port a of the water collector is a water outlet port and is communicated with a water return port of the water chilling unit, and the ports b, c and d of the water collector are water inlet ports;
the water inlets of the first circulating pipeline, the second circulating pipeline and the third circulating pipeline are respectively communicated with ports b, c and d of the water separator, and the water return port is respectively communicated with ports b, c and d of the water collector.
6. The anti-dewing capillary network cold radiation ceiling system of claim 5,
the method comprises the following steps:
the humidity sensor is arranged at the air outlet in the room;
the first temperature regulating valve is arranged on the water return pipeline of the first circulating pipeline;
and the second temperature regulating valve is arranged on the water return pipeline of the second circulating pipeline.
7. The anti-dewing capillary network cold radiation ceiling system of claim 6, comprising:
the second temperature sensor is arranged on a water inlet pipeline of the fourth circulating pipeline;
the third temperature sensor is arranged on a water return pipeline of the fourth circulating pipeline;
the fourth temperature sensor is arranged indoors;
the two ends of the first electromagnetic valve are communicated with a water inlet pipeline and a water return pipeline of the third circulating pipeline through pipelines;
and the second electromagnetic valve is arranged on the water inlet pipeline of the third circulating pipeline and is positioned between the first electromagnetic valve and the heat exchanger.
8. The anti-dewing capillary network cold radiation ceiling system according to claim 7, comprising a hollow control system module, and the humidity sensor, the first temperature regulating valve, the second temperature sensor, the third temperature sensor, the fourth temperature sensor, the three-way valve, the first electromagnetic valve and the second electromagnetic valve are all electrically connected.
9. A method of operation for controlling the anti-dewing capillary network cold radiation ceiling system of claim 8, comprising three modes of operation:
a rapid cooling mode: the first electromagnetic valve, the port b of the water collector and the port b of the water separator are closed, the ports a, c and d of the water collector, the ports a, c and d of the water separator, the first water pump and the second water pump are opened, cold water enters the port a of the water separator from a water outlet of the water chilling unit and then respectively enters the first surface air cooler and the second surface air cooler through the ports c and d of the water separator for heat exchange;
the first air pump, the first stop valve, the butterfly valve, the second air pump and the second stop valve are opened, the first air pump pumps external fresh air to enable the external fresh air to be dehumidified by the dehumidifying rotating wheel, cooled by heat exchange with exhaust air through the sensible heat exchanger, cooled by heat exchange with cold water through the first surface air cooler and finally enter the room from the air inlet; the second air pump pumps indoor exhaust air to ensure that the indoor exhaust air is sequentially subjected to heat exchange with cold water for cooling through the second surface air cooler, heat exchange with fresh air for heating through the sensible heat exchanger, heating through the air heater, moisture absorption of the dehumidification rotating wheel for humidification and finally exhausted to the outside;
high-efficient refrigeration dehumidification mode: the first electromagnetic valve, the port b of the water collector and the port b of the water separator are closed, and the ports a, c and d of the water collector and the ports a, c and d of the water separator are opened;
the first air pump, the first stop valve, the butterfly valve, the second air pump and the second stop valve are opened;
when the central control system module receives that the temperature value of the fourth temperature sensor is lower than the indoor dew point temperature value, controlling the first electromagnetic valve, the port b of the water collector and the port b of the water separator to be opened, the ports b and c of the three-way valve are opened, the cold water enters the port a of the water separator from the water chilling unit, the cold water enters the heat exchanger through the port b of the water separator for heat exchange, the cold water enters the radiation tail end of the capillary network through the ports a and b of the three-way valve for cooling, the numerical value measured by the second temperature sensor is transmitted to the central control system module, the central control system module adjusts the opening degree of the first electromagnetic valve and the second electromagnetic valve, the water supply temperature of the radiation tail end of the capillary network is controlled, and the return water of the radiation tail end of the capillary network enters the heat exchanger for circulation;
a refrigeration sleep mode: the first electromagnetic valve is closed, ports a, b, c and d of the water collector, ports a, b, c and d of the water separator and ports b and c of the three-way valve are opened;
the first air pump, the first stop valve, the butterfly valve, the second air pump and the second stop valve are opened;
when the central control system module receives that the numerical value of the humidity sensor is lower than a set value, the central control system module controls the third water pump to operate, and cold water circulates in the radiation tail end of the capillary network;
when the central control system module receives that the numerical value of the second temperature sensor is higher than a set value, opening an a port of the three-way valve, and enabling the cold water to enter the radiation tail end of the capillary network through a port a and a port b of the three-way valve for refrigeration;
when the central control system module receives that the temperature values of the second temperature sensor and the third temperature sensor are smaller than a temperature difference set value, the ports a of the first electromagnetic valve and the three-way valve are controlled to be closed, and the cold water circulates at the radiation tail end of the capillary network.
CN202110929485.2A 2021-08-13 2021-08-13 Anti-condensation capillary pipe network cold radiation ceiling system and working method thereof Active CN113483423B (en)

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