CN108088108A - A kind of subway station direct-expansion type evaporative condenser heat pump air conditioning system and its method of work - Google Patents

A kind of subway station direct-expansion type evaporative condenser heat pump air conditioning system and its method of work Download PDF

Info

Publication number
CN108088108A
CN108088108A CN201810041060.6A CN201810041060A CN108088108A CN 108088108 A CN108088108 A CN 108088108A CN 201810041060 A CN201810041060 A CN 201810041060A CN 108088108 A CN108088108 A CN 108088108A
Authority
CN
China
Prior art keywords
air
temperature
low
evaporative condenser
pressure refrigerant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810041060.6A
Other languages
Chinese (zh)
Inventor
李国庆
谷雅秀
潘嵩
孟鑫
邹阳
刘加平
刘广东
王俊炜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changan University
Original Assignee
Changan University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changan University filed Critical Changan University
Priority to CN201810041060.6A priority Critical patent/CN108088108A/en
Publication of CN108088108A publication Critical patent/CN108088108A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • F25B39/04Condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00Details of evaporators; Details of condensers
    • F25B2339/04Details of condensers
    • F25B2339/041Details of condensers of evaporative condensers

Abstract

The invention discloses a kind of subway station direct-expansion type evaporative condenser heat pump air conditioning system and its method of works,Including Air Conditioning Facilities,Air delivery duct and exhausting duct,Wherein,Air conditioner and expansion throttling valve are provided in Air Conditioning Facilities,Compressor is provided in exhausting duct,Four-way reversing valve,Evaporative condenser,Compressor and gas-liquid separator,Wherein,The outlet of gas-liquid separator is connected with the entrance of compressor,The outlet of compressor and the first of four-way reversing valve opening in communication,The entrance of gas-liquid separator and the second of four-way reversing valve opening in communication,The 3rd expanded throttle valve of opening of four-way reversing valve is connected with the entrance of air conditioner,4th opening of four-way reversing valve is connected with the outlet of evaporative condenser,The outlet of air conditioner is connected with the entrance of evaporative condenser,The system and its method of work can avoid installation cooling tower,And heat exchange efficiency is higher,It can be used in freezing and heat simultaneously.

Description

A kind of subway station direct-expansion type evaporative condenser heat pump air conditioning system and its method of work
Technical field
The present invention relates to a kind of air-conditioning system and its method of works, and in particular to a kind of subway station direct-expansion type evaporative condenser heat Pump air conditioner system and its method of work.
Background technology
At present, well known subway's air-conditioning system is mostly water-cooling type air conditioning system, by evaporator, compressor, expansion valve, condensation Device, cooling tower, end equipment are formed.High-temperature low-pressure refrigerant vapour enters compressor, and to become high-temperature high-pressure refrigerant steam laggard Enter to be condensed into the cooling water that high-temperature high-pressure refrigerant liquid is heated simultaneously after exchanging heat with cooling water in condenser and be transported to ground Upper cooling tower carries out cooling down, and the expanded valve of refrigerant liquid that condenser comes out becomes the entrance of low-temperature low-pressure refrigerant liquid Evaporator exchanges heat with chilled water, and the chilled water to be cooled down returns in the cooling apparatus of end and air is cooled down, and makes wind pushing temperature Interior is sent into after reaching design requirement, completes entire refrigeration cycle.
But the cooling tower of subway station water-cooling type air conditioning system is placed on the ground, and noise is big, unsightly, takes up a large area, and And water-cooling type air conditioning system water consumption in itself and power consumption are also very huge, in addition, cooling tower is placed underground by part subway station In exhaust air shaft, although solving the problems such as noise, take up an area, therefore heat exchange efficiency also declines, and then make entire refrigeration system Energy consumption ratio substantially reduce, then people have turned one's attention to evaporative condenser of good performance, but have a small number of ground at present The air-conditioning system consideration of iron station replaces cooling tower to be placed on underground with evaporative condenser, but is served only for refrigeration system, not by it It is used in and solves in the subway station Winter heat supply system of severe cold area, subway station Winter heat supply energy consumption in severe cold area is very huge, should A kind of simple effective heat pump system of the research and development realizes energy saving purpose.If using the evaporating type condensing refrigeration unit of monoblock type, Very big refrigerating plant room is necessarily required to, this is for some subway stations and bad solution.
The content of the invention
The shortcomings that it is an object of the invention to overcome the above-mentioned prior art, provides a kind of subway station direct-expansion type evaporative condenser Heat pump air conditioning system and its method of work, the system and its method of work can avoid installation cooling tower, and heat exchange efficiency compared with Height, while can be used in freezing and heat.
In order to achieve the above objectives, subway station direct-expansion type evaporative condenser heat pump air conditioning system of the present invention includes air conditioner Room, air delivery duct and exhausting duct, wherein, air conditioner and expansion throttling valve are provided in Air Conditioning Facilities, compression is provided in exhausting duct Machine, four-way reversing valve, evaporative condenser, compressor and gas-liquid separator, wherein, the outlet of gas-liquid separator and compressor Entrance is connected, the outlet of compressor and the first of four-way reversing valve opening in communication, the entrance and four-way of gas-liquid separator Second opening in communication of reversal valve, the 3rd expanded throttle valve of opening of four-way reversing valve are connected with the entrance of air conditioner Logical, the 4th opening of four-way reversing valve is connected with the outlet of evaporative condenser, the outlet of air conditioner and evaporating type condensing The entrance of device is connected;
First air-valve between air delivery duct and exhausting duct is installed, the second air-valve is installed between air delivery duct and Air Conditioning Facilities, The 3rd air-valve is provided between exhausting duct and Air Conditioning Facilities.
The evaporative condenser includes wind turbine, spray equipment, flat tube plate-fin heat exchanger, water circulating pump and water-collecting tray, Wherein, the entrance of flat tube plate-fin heat exchanger and outlet the 4th opening phase with the outlet of air conditioner and four-way reversing valve respectively Connection, for spray equipment between wind turbine and flat tube plate-fin heat exchanger, water-collecting tray is located at the lower section of flat tube plate-fin heat exchanger, The water outlet of water-collecting tray is connected through water circulating pump with the entrance of spray equipment.
The flat tube plate-fin heat exchanger includes transmission & distribution pipe, collecting pipe and several elliptical tubes, wherein, each elliptical tube Several fins are provided on outer wall, there are fin channels between adjacent fins, the outlet of air conditioner is connected with the entrance of transmission & distribution pipe, The entrance of each elliptical tube is connected with transmission & distribution pipe, and the outlet of each elliptical tube is connected with collecting pipe, the outlet of collecting pipe With the 4th opening in communication of four-way reversing valve.
Air-supply vertical shaft is provided in air delivery duct and returns exhaust blower, exhaust air shaft is provided in exhausting duct.
The method of work of subway station direct-expansion type evaporative condenser heat pump air conditioning system of the present invention include cooling stages and The heating stage;
The specific work process of the cooling stages is:
Low-temperature low-pressure refrigerant steam is become high temperature and pressure refrigeration by low-temperature low-pressure refrigerant steam by compressor work Agent steam, then flowed to by four-way reversing valve in the flat tube plate-fin heat exchanger in evaporative condenser, while the water in water-collecting tray Spray equipment is entered through water circulating pump, then is ejected by spray equipment on flat tube plate-fin heat exchanger, while wind turbine is by air Blow on flat tube plate-fin heat exchanger, the shower water and air outside high-temperature high-pressure refrigerant steam and flat tube plate-fin heat exchanger into Row heat exchange postcooling is high normal pressure and temperature refrigerant liquid, and the shower water after heat exchange is entered in water-collecting tray;
High normal pressure and temperature refrigerant liquid becomes low-temperature low-pressure refrigerant liquid after the throttling of expansion throttling valve, enters back into Air conditioner, and exchange heat again in air conditioner with air, make air cooling, air after cooling is sent into subway station, is inhaled simultaneously Low-temperature low-pressure refrigerant liquid after heat is vaporizated into low-temperature low-pressure refrigerant steam, then again through four-way reversing valve and gas-liquid separation Device is entered in compressor;
The specific work process in heating stage is:
Water circulating pump is closed, spray equipment is made to stop water spray, low-temperature low-pressure refrigerant steam, which is entered in compressor, to be compressed After be changed into high-temperature high-pressure refrigerant steam, then enter through four-way reversing valve in air conditioner, in air conditioner, high temperature and pressure refrigeration Agent steam exchanges heat with wind pushing air, the temperature of wind pushing air is heated to wind pushing temperature, the wind pushing air after heating enters confession Thermal region carries out heat supply, becomes normal temperature high voltage refrigerant liquid after high-temperature high-pressure refrigerant steam heat release, then expanded section again Stream valve becomes low-temperature low-pressure refrigerant liquid, enters back into flat tube plate-fin heat exchanger, low-temperature low-pressure refrigerant liquid is flat It exchanges heat in tube sheet fin heat exchanger with the outer air of flat tube plate-fin heat exchanger, and absorbs heat and become low-temperature low-pressure refrigerant steaming Then vapour is entered through four-way reversing valve in compressor again.
The invention has the advantages that:
Subway station direct-expansion type evaporative condenser heat pump air conditioning system of the present invention and its method of work in concrete operations, Traditional cooling tower and condenser are substituted using evaporative condenser, makes full use of heat exchange pipe external surface water in evaporative condenser Vaporization when film evaporates radiates to reduce the temperature of heat exchange tube refrigerant, is put so as to solve in traditional subway station air-conditioning system The problem of putting cooling tower.It should be noted simultaneously that air conditioner makes refrigerant and sky by the way of direct expansion in the present invention Gas and shower water, which contact directly, to exchange heat, and reduces freezing water circulation system, when avoiding exchanging heat between chilled water and refrigerant Heat loss improves heat exchange efficiency, and using water wisely.In addition, when heating in winter, then water circulating pump is closed, open four-way and change To valve, evaporative condenser is made to be used as evaporator, refrigerant is heated by evaporative condenser, and then passes through sky Tune device is subway station heat supply, and simple in structure, easy to operate, practicability is extremely strong.
Further, the present invention substitutes traditional fin-tube type or plate-fin heat exchanger by flat tube plate-fin heat exchanger, so as to The effective heat exchange property for improving evaporative condenser.
Further, flat tube plate-fin heat exchanger includes elliptical tube, the average mass transfer Colburn of elliptical tube in the present invention Factor Jm is the 84% of circle light pipe, and average f is the 46% of circle light pipe, and the ratio of the mass transfer factor of elliptical tube and friction factor Jm/f is 1.93~1.96 times of pipe, so as to better heating power and hydrodynamic characterisitic.In addition, on the outer wall of elliptical tube Fin is provided with, to increase heat exchange area, improves heat exchange efficiency.
Description of the drawings
Fig. 1 is the fundamental diagram of the present invention;
Fig. 2 is the present invention in non-conditioning in Transition Season plane of arrangement schematic diagram;
Fig. 3 is the system of the present invention in conditioning in Transition Season plane of arrangement schematic diagram;
Fig. 4 is the left view of evaporative condenser 6 in the present invention;
Fig. 5 is the A-A sectional views of evaporative condenser 6 in the present invention;
Fig. 6 is the B-B sectional views of evaporative condenser 6 in the present invention;
Fig. 7 is the refrigeration cycle p-h figures of the present invention;
Fig. 8 is the refrigeration cycle T-S figures of the present invention;
Fig. 9 is the heat pump cycle p-h figures of the present invention;
Figure 10 is the heat pump cycle T-S figures of the present invention.
Wherein, 1 it is air conditioner, 2 be compressor, 3 be four-way reversing valve, 4 be expansion throttling valve, 5 is gas-liquid separator, 6 It is wind turbine for evaporative condenser, 61,62 be spray equipment, 63 be flat tube plate-fin heat exchanger, 631 be transmission & distribution pipe, 632 is wing Piece passage, 633 be elliptical tube, 7 be exhausting duct, 71 be exhaust air shaft, 8 be air delivery duct, 81 be air-supply vertical shaft, 9 be the first wind Valve, 10 be water-collecting tray, 11 be water circulating pump, 12 be the second air-valve, 13 be the 3rd air-valve, 14 be back that exhaust blower, 15 are air conditioner Room.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings:
Referring to figs. 1 to shown in Fig. 6, subway station direct-expansion type evaporative condenser heat pump air conditioning system of the present invention includes air-conditioning Computer room 15, air delivery duct 8 and exhausting duct 7, wherein, air conditioner 1 and expansion throttling valve 4 are provided in Air Conditioning Facilities 15, in exhausting duct 7 Compressor 2, four-way reversing valve 3, evaporative condenser 6, compressor 2 and gas-liquid separator 5 are provided with, wherein, gas-liquid separator 5 Outlet be connected with the entrance of compressor 2, the outlet of compressor 2 and first opening in communication of four-way reversing valve 3, gas-liquid The entrance of separator 5 and second opening in communication of four-way reversing valve 3, the 3rd expanded section of opening of four-way reversing valve 3 Stream valve 4 is connected with the entrance of air conditioner 1, and the 4th opening of four-way reversing valve 3 is connected with the outlet of evaporative condenser 6 Logical, the outlet of air conditioner 1 is connected with the entrance of evaporative condenser 6;First wind is installed between air delivery duct 8 and exhausting duct 7 Valve 9 is equipped with the second air-valve 12, the 3rd is provided between exhausting duct 7 and Air Conditioning Facilities 15 between air delivery duct 8 and Air Conditioning Facilities 15 Air-valve 13;Air-supply vertical shaft 81 is provided in air delivery duct 8 and returns exhaust blower 14, exhaust air shaft 71 is provided in exhausting duct 7.
The evaporative condenser 6 includes wind turbine 61, spray equipment 62, flat tube plate-fin heat exchanger 63, water circulating pump 11 And water-collecting tray 10, wherein, the entrance of flat tube plate-fin heat exchanger 63 and outlet respectively with the outlet of air conditioner 1 and four-way reversing valve 3 the 4th opening in communication, between wind turbine 61 and flat tube plate-fin heat exchanger 63, water-collecting tray 10 is located at spray equipment 62 The lower section of flat tube plate-fin heat exchanger 63, the water outlet of water-collecting tray 10 are connected through water circulating pump 11 with the entrance of spray equipment 62 It is logical.
The flat tube plate-fin heat exchanger 63 includes transmission & distribution pipe 631, collecting pipe and several elliptical tubes 633, wherein, it is each ellipse Several fins are provided on the outer wall of round flat pipe 633, there is fin channels 632, the outlet of air conditioner 1 and transmission & distribution between adjacent fins The entrance of pipe 631 is connected, and the entrance of each elliptical tube 633 is connected with transmission & distribution pipe 631, the outlet of each elliptical tube 633 It is connected with collecting pipe, the outlet of collecting pipe and the 4th of four-way reversing valve 3 the opening in communication.
The course of work of subway station direct-expansion type evaporative condenser heat pump air conditioning system of the present invention is:
In transition season, the first air-valve is then opened when entering the deficiency in draught of evaporative condenser 6 in exhausting duct 7 9, the wind in air delivery duct 8 is made to enter in exhausting duct 7, to supplement the air quantity of evaporative condenser 6.
In non-transition season, open the second air-valve 12, the fresh air in air delivery duct 8 enter in Air Conditioning Facilities 15 after with it is empty It is sent into after adjusting the return air mixing in computer room 15 after the processing of air conditioner 1 in subway station.
In non-transition season, the 3rd air-valve 13 is opened, the return air in exhausting duct 7 is introduced into Air Conditioning Facilities 15, and with It is sent into after fresh air mixing after the processing of air conditioner 1 in subway station.
In transition season, the first air-valve 9 and the 3rd air-valve 13 are closed, the second air-valve 12 is opened, is in air-conditioning system All-fresh air operating status.
With reference to figure 5 and Fig. 6, refrigerant, into transmission & distribution pipe 631, is further separated into each ellipse by pipeline through transmission & distribution pipe 631 In round flat pipe 633, and heat exchange, refrigerant liquid after cooling are carried out with managing outer air and shower water in elliptical tube 633 It flows into collecting pipe and is entered after confluence in four-way reversing valve 3, while the shower water that spray equipment 62 sprays is blown out with wind turbine 61 Wind injection it is horizontal skim over elliptical tube 633 and fin, and carry out indirect heat exchange with the refrigerant in elliptical tube 633, realize Refrigerant temperature-fall period, wherein, the shower water after heat exchange is sent into spray equipment through water circulating pump 11 again after the collection of water-collecting tray 10 In 62.
The working of heat pump system includes in the present invention:
1st, run in cooling in summer cooling system
Low-temperature low-pressure refrigerant steam is done work by compressor 2, and low-temperature low-pressure refrigerant steam is become high temperature and pressure system Refrigerant vapour, then flowed to by four-way reversing valve 3 in the flat tube plate-fin heat exchanger 63 in evaporative condenser 6, while water-collecting tray Water in 10 enters spray equipment 62 through water circulating pump 11, then is ejected into flat tube plate-fin heat exchanger 63 by spray equipment 62 On, while wind turbine 61 blows to air on flat tube plate-fin heat exchanger 63, high-temperature high-pressure refrigerant steam is changed with flat tube plate-fin It is high normal pressure and temperature refrigerant liquid that shower water and air outside hot device 63, which carry out heat exchange postcooling, and the shower water after heat exchange enters In water-collecting tray 10;
High normal pressure and temperature refrigerant liquid becomes low-temperature low-pressure refrigerant liquid after the throttling of expansion throttling valve 4, enters back into It exchanges heat to air conditioner 1, and again in air conditioner 1 with air, makes air cooling, air after cooling is sent into subway station, together When heat absorption after low-temperature low-pressure refrigerant liquid be vaporizated into low-temperature low-pressure refrigerant steam, then again through four-way reversing valve 3 and gas Liquid/gas separator 5 is entered in compressor 2;
With reference to figure 7, in refrigeration systems, evaporating temperature and condensation of the maximum parameter for refrigerant are influenced on cold performance Temperature, in Fig. 7, tkFor the condensation temperature of water cooled refrigeration system, tk' freezing for the evaporating condensation type employed in the present invention is The condensation temperature of system, under conditions of evaporating temperature, refrigerant degree of supercooling, refrigerant superheat degree all same, through experiment, the present invention Compared with traditional water-cooling system, evaporative condenser system theoretical compression work can about save 18.7%.
With reference to figure 8, since evaporative condenser refrigeration system condensation temperature is less than traditional water cooled refrigeration system, equal Under the conditions of, evaporative condenser refrigeration system used increases Δ q than traditional water-cooling system in the present inventionoRefrigerating capacity, while save Δ w 2 power consumption of compressor, therefore theoretically, evaporative condenser refrigeration system COP used should be than traditional water-cooling system in the present invention It is promoted.
2nd, winter heat pump system heating operation
When heating heats in winter, water circulating pump 11 is closed, spray equipment 62 is made to stop water spray, low-temperature low-pressure refrigerant steams Vapour, which enters, is changed into high-temperature high-pressure refrigerant steam after compression in compressor 2, then enter through four-way reversing valve 3 in air conditioner 1, In air conditioner 1, high-temperature high-pressure refrigerant steam exchanges heat with wind pushing air, and the temperature of wind pushing air is heated to wind pushing temperature, Wind pushing air after heating is entered carries out heat supply for thermal region, becomes normal temperature high voltage system after high-temperature high-pressure refrigerant steam heat release Cryogen liquid, then expanded throttle valve 4 becomes low-temperature low-pressure refrigerant liquid again, enters back into flat tube plate-fin heat exchanger 63 Interior, low-temperature low-pressure refrigerant liquid is changed in flat tube plate-fin heat exchanger 63 with 63 outer air of flat tube plate-fin heat exchanger Heat, and absorb heat and become low-temperature low-pressure refrigerant steam, then entered again through four-way reversing valve 3 in compressor 2.
With reference to figure 9 and Figure 10, heat pump cycle process is:The high-temperature high-pressure refrigerant steam of a states exchanges heat with wind pushing air, Become the high-temperature high-pressure refrigerant liquid of b states, expanded throttle valve 4 becomes the low-temperature low-pressure refrigerant liquid of c states, then The low-temperature low-pressure refrigerant steam that heat absorption in flat tube plate-fin heat exchanger 63 becomes b states is sent to, finally by four-way reversing valve 3 Return to the high-temperature high-pressure refrigerant steam that compressor 2 is compressed into a states.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the present invention, all essences in the present invention All any modification, equivalent and improvement done within refreshing and principle etc., should be included within the scope of the present invention.

Claims (5)

1. a kind of subway station direct-expansion type evaporative condenser heat pump air conditioning system, which is characterized in that including Air Conditioning Facilities (15), air delivery duct (8) and exhausting duct (7) air conditioner (1) and expansion throttling valve (4), are provided with wherein, in Air Conditioning Facilities (15), in exhausting duct (7) Compressor (2), four-way reversing valve (3), evaporative condenser (6), compressor (2) and gas-liquid separator (5) are provided with, wherein, The outlet of gas-liquid separator (5) is connected with the entrance of compressor (2), and the of the outlet of compressor (2) and four-way reversing valve (3) One opening in communication, the entrance of gas-liquid separator (5) and second opening in communication of four-way reversing valve (3), four-way commutation The 3rd expanded throttle valve (4) of opening of valve (3) is connected with the entrance of air conditioner (1), the 4th of four-way reversing valve (3) Opening is connected with the outlet of evaporative condenser (6), and the outlet of air conditioner (1) is connected with the entrance of evaporative condenser (6) It is logical;
First air-valve (9) between air delivery duct (8) and exhausting duct (7) is installed, is installed between air delivery duct (8) and Air Conditioning Facilities (15) There is the second air-valve (12), the 3rd air-valve (13) is provided between exhausting duct (7) and Air Conditioning Facilities (15).
2. subway station direct-expansion type evaporative condenser heat pump air conditioning system according to claim 1, which is characterized in that the evaporation Formula condenser (6) includes wind turbine (61), spray equipment (62), flat tube plate-fin heat exchanger (63), water circulating pump (11) and catchments Disk (10), wherein, the entrance of flat tube plate-fin heat exchanger (63) and outlet respectively with the outlet of air conditioner (1) and four-way reversing valve (3) the 4th opening in communication, spray equipment (62) are located between wind turbine (61) and flat tube plate-fin heat exchanger (63), catchment Disk (10) is located at the lower section of flat tube plate-fin heat exchanger (63), and the water outlet of water-collecting tray (10) is filled through water circulating pump (11) and spray The entrance for putting (62) is connected.
3. subway station direct-expansion type evaporative condenser heat pump air conditioning system according to claim 1, which is characterized in that the flat tube Plate-fin heat exchanger (63) includes transmission & distribution pipe (631), collecting pipe and several elliptical tubes (633), wherein, each elliptical tube (633) several fins are provided on outer wall, there is fin channels (632), the outlet of air conditioner (1) and transmission & distribution between adjacent fins The entrance of pipe (631) is connected, and the entrance of each elliptical tube (633) is connected with transmission & distribution pipe (631), each elliptical tube (633) outlet is connected with collecting pipe, the outlet of collecting pipe and the 4th opening in communication of four-way reversing valve (3).
4. subway station direct-expansion type evaporative condenser heat pump air conditioning system according to claim 1, which is characterized in that air delivery duct (8) air-supply vertical shaft (81) is provided in and returns exhaust blower (14), exhaust air shaft (71) is provided in exhausting duct (7).
5. a kind of method of work of the subway station direct-expansion type evaporative condenser heat pump air conditioning system described in claim 2, feature exist In including cooling stages and heating stage;
The specific work process of the cooling stages is:
Low-temperature low-pressure refrigerant steam is done work by compressor (2), and low-temperature low-pressure refrigerant steam is become high temperature and pressure refrigeration Agent steam, then flowed to by four-way reversing valve (3) in the flat tube plate-fin heat exchanger (63) in evaporative condenser (6), collect simultaneously Water in water pond (10) enters spray equipment (62) through water circulating pump (11), then is ejected into flat tube plate wing by spray equipment (62) On formula heat exchanger (63), while wind turbine (61) blows to air on flat tube plate-fin heat exchanger (63), and high-temperature high-pressure refrigerant steams It is high normal pressure and temperature refrigerant liquid that the outer shower water of vapour and flat tube plate-fin heat exchanger (63) and air, which carry out heat exchange postcooling, is changed Shower water after heat is entered in water-collecting tray (10);
High normal pressure and temperature refrigerant liquid becomes low-temperature low-pressure refrigerant liquid after expansion throttling valve (4) throttling, enters back into Air conditioner (1), and exchange heat again in air conditioner (1) with air, making air cooling, air after cooling is sent into subway station, Low-temperature low-pressure refrigerant liquid after absorbing heat simultaneously is vaporizated into low-temperature low-pressure refrigerant steam, then again through four-way reversing valve (3) And gas-liquid separator (5) is entered in compressor (2);
The specific work process in heating stage is:
Water circulating pump (11) is closed, spray equipment (62) is made to stop water spray, low-temperature low-pressure refrigerant steam enters compressor (2) It is changed into high-temperature high-pressure refrigerant steam after middle compression, then enters through four-way reversing valve (3) in air conditioner (1), in air conditioner (1) Interior, high-temperature high-pressure refrigerant steam exchanges heat with wind pushing air, the temperature of wind pushing air is heated to wind pushing temperature, sending after heating Wind air is entered carries out heat supply for thermal region, becomes normal temperature high voltage refrigerant liquid after high-temperature high-pressure refrigerant steam heat release, Then expanded throttle valve (4) becomes low-temperature low-pressure refrigerant liquid again, enters back into flat tube plate-fin heat exchanger (63), low Warm low pressure refrigerant liquid exchanges heat in flat tube plate-fin heat exchanger (63) with flat tube plate-fin heat exchanger (63) outer air, And absorb heat and become low-temperature low-pressure refrigerant steam, then entered again through four-way reversing valve (3) in compressor (2).
CN201810041060.6A 2018-01-16 2018-01-16 A kind of subway station direct-expansion type evaporative condenser heat pump air conditioning system and its method of work Pending CN108088108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810041060.6A CN108088108A (en) 2018-01-16 2018-01-16 A kind of subway station direct-expansion type evaporative condenser heat pump air conditioning system and its method of work

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810041060.6A CN108088108A (en) 2018-01-16 2018-01-16 A kind of subway station direct-expansion type evaporative condenser heat pump air conditioning system and its method of work

Publications (1)

Publication Number Publication Date
CN108088108A true CN108088108A (en) 2018-05-29

Family

ID=62182304

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810041060.6A Pending CN108088108A (en) 2018-01-16 2018-01-16 A kind of subway station direct-expansion type evaporative condenser heat pump air conditioning system and its method of work

Country Status (1)

Country Link
CN (1) CN108088108A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112240616A (en) * 2020-09-21 2021-01-19 依米康科技集团股份有限公司 Energy-saving evaporative condensing cold water air conditioning unit system and control method
CN112594810A (en) * 2020-11-26 2021-04-02 依米康科技集团股份有限公司 Closed circulation power type condensation system and control method
CN112594809A (en) * 2020-11-26 2021-04-02 依米康科技集团股份有限公司 Subway channel type evaporative cold water cooling air system and control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112240616A (en) * 2020-09-21 2021-01-19 依米康科技集团股份有限公司 Energy-saving evaporative condensing cold water air conditioning unit system and control method
CN112594810A (en) * 2020-11-26 2021-04-02 依米康科技集团股份有限公司 Closed circulation power type condensation system and control method
CN112594809A (en) * 2020-11-26 2021-04-02 依米康科技集团股份有限公司 Subway channel type evaporative cold water cooling air system and control method

Similar Documents

Publication Publication Date Title
CN108088108A (en) A kind of subway station direct-expansion type evaporative condenser heat pump air conditioning system and its method of work
CN104776629B (en) Evaporative condenser air-conditioning system and its method of work
CN100538208C (en) A kind of double-temperature refrigerator water/cold wind unit
CN103411355B (en) Evaporative condenser separate type Ji Leng thermal-arrest refrigeration station
WO2020029582A1 (en) Fan-free indoor heat exchanger for air source heat pump air conditioner and having built-in heat storage medium
CN110454897A (en) A kind of evaporation cooling-solar energy absorption type refrigeration air-conditioning system
CN109357427B (en) Combined air conditioning system for machine room and hot water system and control method thereof
CN106642789A (en) Heat-source tower heat pump system capable of realizing comprehensive utilization of solar energy and seasonal energy storage in soil
CN207741250U (en) A kind of machine room energy-saving circulatory system
CN203024477U (en) Ground source heat pump central air-conditioning hot water triple-generation unit
CN105423617B (en) A kind of air-source flexibility water chiller-heater unit and operation method
CN208170775U (en) A kind of subway station direct-expansion type evaporative condenser heat pump air conditioning system
CN204084930U (en) A kind of self-folding type energy tower heat pump system
CN208871933U (en) A kind of energy-saving and water-saving type heat water-spraying removes defrosting system
CN201093735Y (en) Instantaneous hot wind cool heat pump water heater
CN108332323A (en) A kind of flat tube plate-fin heat source tower heat pump air-conditioning system and its working method
CN110030765A (en) A kind of dry heating cooling supply composite system
CN110966696A (en) Refrigerant radiation wall integrated air conditioning system with solar jet function and air conditioner
CN109595720A (en) A kind of multi-connected machine capillary radiation system
CN206234954U (en) Closed indirect evaporation cools down the handpiece Water Chilling Units with mechanical refrigeration cooperation
CN109855218A (en) Integrated enclosed evaporates cooling-condensation water cooler
CN104214984B (en) A kind of self-folding type energy tower heat pump system
CN203431984U (en) Noiseless air condition system
CN203421868U (en) Integrated refrigerating station with evaporating, condensing and separation type cooling and heating functions
CN207831554U (en) A kind of flat tube plate-fin heat source tower heat pump air-conditioning system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination