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 PDFInfo
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- 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
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000004891 communication Methods 0.000 claims abstract description 13
- 239000003507 refrigerant Substances 0.000 claims description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 239000007921 spray Substances 0.000 claims description 25
- 238000005057 refrigeration Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims 1
- 238000007710 freezing Methods 0.000 abstract description 4
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 230000007704 transition Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 108010074506 Transfer Factor Proteins 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/041—Details 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
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).
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| 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 |
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| 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 |
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| CN108088108A true CN108088108A (en) | 2018-05-29 |
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| 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 |
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| 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 |
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| 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 |
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