CN101922772B - Multistage countercurrent flow heat exchange-evaporation-refrigeration device - Google Patents
Multistage countercurrent flow heat exchange-evaporation-refrigeration device Download PDFInfo
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- CN101922772B CN101922772B CN2009101133669A CN200910113366A CN101922772B CN 101922772 B CN101922772 B CN 101922772B CN 2009101133669 A CN2009101133669 A CN 2009101133669A CN 200910113366 A CN200910113366 A CN 200910113366A CN 101922772 B CN101922772 B CN 101922772B
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Abstract
The invention discloses a multistage countercurrent flow heat exchange-evaporation-refrigeration device, comprising direct devaporizers, an air outlet, an air inlet, a water tank, heat exchanging chambers and fan drifts, wherein the direct devaporizer the upper part of which is provided with a spray system is arranged in the heat exchanging chamber; the air outlet is arranged on the upper part of the spray system; the air inlet is arranged on the lower part of the direct devaporizer; the water tank is mounted at the bottom of the heat exchanging chamber; the heat exchanging chambers mutually separated are evenly distributed in a machine case; the fan drift is arranged between the adjacent heat exchanging chambers; the upper port of the fan drift is communicated with the air outlet of the last stage heat exchanging chamber; the lower port of the fan drift is communicated with the air inlet of the next stage heat exchanging chamber; the air outlet of the final stage heat exchanging chamber leads outdoor, the water discharging pipe of a water pump of the water tank of the next stage heat exchanging chamber is connected with the spraying system of the last stage heat exchanging chamber; and the cool water in the water tank of the final stage heat exchanging chamber is output through the water pump. The invention not only can reduce the irreversible loss of the heat and moisture exchange of the cool water in the process of heat and moisture exchange of inlet air and improve heat exchanger efficiency, but also can achieve single cool water supply, or single cool air supply, or simultaneous cool water and cool air supply according to different conditions and demands.
Description
Technical field
The present invention relates to field of renewable energy technology, belonging to the dry air that contains with the open-air seasoning air can be the evaporation-refrigeration device of the driving force of refrigeration, particularly multistage countercurrent flow heat exchange-evaporation-refrigeration device.
Background technology
China is vast in territory, and climate difference is obvious, and the Northwest belongs to typical xeothermic meteorological condition, and precipitation is generally less, and sunshine is abundant, belongs to the arid and semi-arid lands.With respect to hot and humid area, inland, because water in air steam absolute quantity is few, relative humidity is low, and is dry, and aqueous water evaporates more easily, and the water evaporation absorbs heat, has produced the freezing by change of state effect.Air is drier, and then its available energy is just big more in the dry air, and the refrigerating capacity of generation is big more, and this energy that is used for freezing just is referred to as the dry air ability, and the technology of utilizing dry air can be used for cooling then is referred to as the Evaporative Cooling Air Conditioning technology.
Air-conditioning system is carried out the branch time-like according to the used medium difference of the indoor hot humidity load of burden, can be summed up as all-air system, air one water system and all water system three major types.Wherein all water system is used less owing to can not play the effect of ventilation.Common is all-air system and air one water system.
All-air system is meant through air processing machine and produces cold wind, for carrying cold medium, is transported to air-conditioned room with air, is born the air-conditioning system of the whole hot humidity loads in room by cold wind.Because the specific heat capacity of air is less, need more air output just can reach and eliminate waste heat, surplus wet purpose, therefore require to have the air channel of big section or higher wind speed.The characteristics of this system are that initial cost is little, and it is reliable to introduce new wind, help improving indoor air quality; But the required space of the air distributing system of air-line system is bigger, generally requires dwelling house that higher floor height is arranged, and also the considered airduct passes through the problem of body of wall and the cooperation of building is had relatively high expectations simultaneously.
Air one water system is meant that the hot humidity load of air-conditioned room bears this air-conditioning system jointly by empty G&W and produce idle call cold water through handpiece Water Chilling Units; Be transported to each indoor end equipment by pipe-line system; Such as fan coil, cold emission coil pipe etc., eliminate the surplus wet amount of room residual heat through heat exchange.Meanwhile, produce cold wind, be transported to air-conditioned room, supply the resh air requirement of needed by human body through air processing machine.Therefore this system single room adjusting function is better, because the cold water specific heat capacity is bigger, the shared space of cold water distributing system is very little, and it is better relatively that handpiece Water Chilling Units takies space cooperation less and building.
Make a general survey of existing patent and prior art, early stage technology is in the majority with the sweat cooling air processing machine, constitutes evaporative cooling all-air conditioning system.Air processing machine is through sweat cooling, and the cold wind of acquisition is sent into air-conditioned room, bears the sweat cooling air-conditioning system of the hot humidity load in room.Low-temperature receiver comes from the sweat cooling air processing machine, and year cold medium of output is single cold wind.
Partial monopoly relates to and utilizes dry air to freeze, and can utilize the fresh air refrigerating of open-air seasoning, produces cold water, and cold water temperature can level off to the dew-point temperature of new wind in theory, output to carry a cold medium be single cold water.
Partial monopoly relates to a kind of indirect evaporation refrigerating method and device that produces cold water and cold wind simultaneously, and the caloic exchange process of air and water is cross-current (crossing current), and can only produce cold water and cold wind simultaneously, can not realize the function of independent supply cold wind or cold water.
In addition, cold water and air intake take place to have bigger heat temperature exchange irreversible loss in the wet process that exchanges of heat, have reduced heat exchanger efficiency.
Summary of the invention
The object of the present invention is to provide a kind of multistage countercurrent flow heat exchange-evaporation-refrigeration device; Not only can reduce cold water and air intake the wet exchange of the heat irreversible loss in the wet exchange process of heat takes place; Improve heat exchanger efficiency; But also can realize the function of independent cooling water or independent supply cold wind or while cooling water and cold wind according to various conditions and requirement.
The object of the present invention is to provide a kind of multistage countercurrent flow heat exchange-evaporation-refrigeration device; Be included in the direct evaporative cooler that top has spray equipment is installed in the Heat Room, air outlet is being set, air inlet is being set in the bottom of direct evaporative cooler on the top of spray equipment; In the bottom of Heat Room the water tank water pump is being set; In cabinet, be uniformly distributed with mutual separated Heat Room is being set, between adjacent Heat Room, wind channel is being set, the air outlet with the upper level Heat Room suitable for reading of wind channel is communicated with; The end opening of wind channel is communicated with the air inlet of next stage Heat Room, and the exhaust blower air outlet of final stage Heat Room passes to outside the Heat Room.
Because the present invention is uniformly distributed with in cabinet Heat Room is being set; Between adjacent Heat Room, wind channel is being set; The air outlet with the upper level Heat Room suitable for reading of wind channel is communicated with; The end opening of wind channel is communicated with the air inlet of next stage Heat Room, and it is variant that cooling water in each water tank and corresponding Heat Room carry out the hot temperature that wets after exchanging like this, and the water temperature of secondary heat-exchanging water tank is higher than the higher level.Therefore along on the air bottom horizontal flow sheet direction, the water temperature of separate water tank is arranged in order from high to low.Because the water temperature that has realized shower water by Gradient distribution, when carrying out the caloic exchange with air intake, is given full play to the potentiality of the wet exchange of heat; To arrive irreversible loss minimum; Make that in Heat Room, remaining big as far as possible heat exchange drives gesture, improved heat exchanger efficiency, improved refrigeration.In addition, can also on basis of the present invention, can widen function of use with requiring, realize the function of independent cooling water or independent supply cold wind or while cooling water and cold wind according to various conditions.
Description of drawings
To combine accompanying drawing that the present invention is described further below.
Fig. 1 is an agent structure sketch map of the present invention;
Fig. 2 is the structural representation of direct evaporative cooler profile parallelogram of the present invention;
Fig. 3 is the structural representation of user's cooling water;
Fig. 4 provides the structural representation of cold water to the user for the precooling of air intake surface cooler;
Fig. 5 is the structural representation of user side parallel connection surface cooler;
Fig. 6 is subscriber multiple, series connection surface cooler type structural representation;
Fig. 7 is for providing the structural representation of bise series connection surface cooler type to the user;
Fig. 8 is for providing the structural representation of cold water and bise to the user;
Fig. 9 is for providing the structural representation of cold water and clammy wind to the user;
Figure 10 is for providing the structural representation of bise series connection surface cooler to the user;
Figure 11 is for providing the structural representation of clammy wind and cold water parallel connection surface cooler to the user;
Figure 12 is for to provide cold water and bise to the user, the structural representation of parallelly connected surface cooler;
Figure 13 is for to provide cold water and clammy wind to the user; And, the series connection surface cooler structural representation;
Figure 14 is for to provide cold water and bise to the user, and, the structural representation of series connection surface cooler.
The specific embodiment
A kind of multistage countercurrent flow heat exchange-evaporation-refrigeration device, as shown in Figure 1, be included in the direct evaporative cooler 1 that top has spray equipment 2 is installed in the Heat Room; Top at spray equipment 2 is being provided with air outlet; Bottom at direct evaporative cooler 1 is being provided with air inlet, in the bottom of Heat Room water tank 4 and water pump is being set, and in cabinet, is uniformly distributed with mutual separated Heat Room is being set; Wind channel 3 is being set between adjacent Heat Room; The air outlet with the upper level Heat Room suitable for reading of wind channel 3 is communicated with, and the end opening of wind channel 3 is communicated with the air inlet of next stage Heat Room, and the air outlet of final stage Heat Room passes to outside the Heat Room.
As shown in Figure 2, the profile parallelogram of upright direct evaporative cooler 1, wherein the windward side and the horizontal angle of direct evaporative cooler bottom are acute angle.Because the windward side and the horizontal angle of direct evaporative cooler bottom are acute angle, have enlarged the area of windward side, the air loss that air is flowed is less, has improved heat transfer medium and has driven gesture, and then improved heat exchange efficiency.
As shown in Figure 3, next stage Heat Room water tank 4 pumping lines are connecting the spray equipment 2 of upper level Heat Room, and the outlet pipe of chopped-off head Heat Room water tank 4 water pumps is connecting user 5, and user 5 outlet pipe is connecting the spray equipment 2 of final stage Heat Room.From the cold water of chopped-off head Heat Room water tank 4 water pumps output lowest temperature, send into user 5 and realize refrigeration.User 5 is air-conditioned room end or fan coil or floor radiant cooling coil pipe or new blower fan group surface cooler.
As shown in Figure 4; Air inlet duct 7 with import is being set in the front portion of cabinet; The outlet of air inlet duct 7 is connecting the air inlet of chopped-off head Heat Room; Surface cooler 6 is installed in the import of air inlet duct 7, and user 5 outlet pipe is connecting the water inlet of surface cooler 6, and the delivery port of surface cooler 6 is connecting the spray equipment 2 of final stage Heat Room through pipeline.It is but clammy that 6 pairs of air intakes of surface cooler carry out etc.; Reduce the dry-bulb temperature and the wet-bulb temperature of air intake; Below from the chopped-off head Heat Room gets into the chopped-off head Heat Room subsequently, and the shower water that is uniformly distributed with spray equipment 2 at the inner top-down water droplet that forms of filler, moisture film adverse current caloic exchange for the first time takes place, and the cold water of generation falls into chopped-off head Heat Room water tank 4; Be delivered to user 5 by water pump; The same cold water that in the second level to n level Heat Room, produces different temperatures according to different allocation proportions, connects higher level's spray equipment 2 respectively and is transported to user 5.
As shown in Figure 5, the water tank 4 of water pump is connecting user 5 and surface cooler 6 respectively through three-way pipe, and the pipeline that the outlet pipe of user 5 outlet pipe and surface cooler 6 compiles through three-way connection is being connected the spray equipment 2 of final stage Heat Room.This unit is a cooling-water machine, user side parallel connection surface cooler.
As shown in Figure 6; The two-stage surface cooler 6 of water route series connection is installed in the import of air inlet duct 7; The outlet pipe of water tank 4 water pumps of chopped-off head Heat Room is connecting the water inlet of user 5 and second level surface cooler 6 respectively through three-way pipe; User 5 outlet pipe is connected with the series connection water pipe of two-stage surface cooler 6, and the outlet pipe of first order surface cooler 6 is connecting the spray equipment 2 of final stage Heat Room.The cold water of chopped-off head Heat Room water tank 4 is drawn through water pump; Part water feeds user 5, and another part feeds second level surface cooler 6, and user 5 is parallel connection with surface cooler 6; Two parts water is after the series connection water pipe behind the first order surface cooler 6 converges; Get into second level surface cooler 6 again, behind the released cold quantity, insert the spray equipment 2 of final stage Heat Room through pipeline.
As shown in Figure 7; The wind channel 8 of air-introduced machine is equipped with in the outlet that on cabinet, is provided with; The outlet of air inlet duct 7 is connecting the import of the air inlet and the wind channel 8 of chopped-off head Heat Room simultaneously; The outlet pipe of chopped-off head Heat Room water pump is connecting the water inlet of surface cooler 6, and the delivery port of surface cooler 6 is connecting the spray equipment 2 of final stage Heat Room through pipeline.This unit is the cold wind cooling-water machine, when cold water is provided, bise is provided also, and a part of in addition cold wind gets into unit as working media.
Like Fig. 8, shown in Figure 9, the outlet pipe of chopped-off head Heat Room water pump is connecting user 5, and user 5 outlet pipe is connecting the water inlet of surface cooler 6, and the outlet pipe of surface cooler 6 is connecting the spray equipment 2 of final stage Heat Room.Fig. 8 is for to provide cold water and cold dry-air blast to the user, series connection surface cooler type.Fig. 9 is for to provide cold water and clammy wind to the user, series connection surface cooler type.
Shown in figure 10; The outlet of air inlet duct 7 is connecting the import of the air inlet and the wind channel 8 of first order Heat Room simultaneously; The two-stage surface cooler 6 of water route series connection is installed in the import of air inlet duct 7; The outlet pipe of chopped-off head Heat Room water tank 4 water pumps is connecting the water inlet of second level surface cooler 6, and the outlet pipe of first order surface cooler 6 is connecting the spray equipment 2 of final stage Heat Room.For user 5 provides bise, the type of series connection surface cooler 6.
Shown in figure 11; Wherein the lower openings of the wind channel 3 of one-level Heat Room is connecting the import of wind channel 8; Chopped-off head Heat Room water tank 4 water pumps are connecting user 5 and surface cooler 6 respectively through three-way pipe, and the pipeline that the outlet pipe of user 5 outlet pipe and surface cooler 6 compiles through three-way connection is being connected the spray equipment 2 of final stage Heat Room.For user 5 provides cold water and clammy wind simultaneously, the type of series connection surface cooler 6.
Shown in figure 12; The outlet of air inlet duct 7 is connecting the import of the air inlet and the wind channel 8 of chopped-off head Heat Room simultaneously; Chopped-off head Heat Room water tank 4 water pumps are connecting user 5 and surface cooler 6 respectively through three-way pipe, and the pipeline that the outlet pipe of user 5 outlet pipe and surface cooler 6 compiles through three-way connection is being connected the spray equipment 2 of final stage Heat Room.For user 5 provides cold water and bise simultaneously, the type of series connection surface cooler 6.
Shown in figure 13; Wherein wind channel 3 openings of one-level Heat Room are connecting the import of wind channel 8; Two-stage surface cooler 6 is installed in the import of air inlet duct 7, and the water pump of chopped-off head Heat Room water tank 4 is connecting user 5 and second level surface cooler 6 through three-way pipe, and two-stage surface cooler 6 is through the water pipe series connection; User 5 outlet pipe is connected with the series connection water pipe of two-stage surface cooler 6, and the outlet pipe of first order surface cooler 6 is connecting the spray equipment 2 of final stage Heat Room.For user 5 provides cold water and clammy wind, the type of series, parallel surface cooler 6 simultaneously.
Shown in figure 14; The outlet of air inlet duct 7 is connecting the import of the air inlet and the wind channel 8 of chopped-off head Heat Room simultaneously; Two-stage surface cooler 6 is installed in the import of air inlet duct 7; The water pump of chopped-off head Heat Room water tank 4 is connecting user 5 and second level surface cooler 6 through three-way pipe, and two-stage surface cooler 6 is through the water pipe series connection, and user 5 outlet pipe is connected with the series connection water pipe of two-stage surface cooler 6.For user 5 provides cold water and bise simultaneously, the type of series, parallel surface cooler 6.
Like Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, shown in Figure 14, on the cabinet wall on wind channel 3 tops wherein, chopped-off head Heat Room rear portion, air inlet 9 is being set, in machine, mend outdoor new wind.
Claims (14)
1. multistage countercurrent flow heat exchange-evaporation-refrigeration device; Be included in the direct evaporative cooler (1) that top is installed in the Heat Room has spray equipment (2); Top at spray equipment (2) is being provided with air outlet; Bottom at direct evaporative cooler (1) is being provided with air inlet, and water tank (4) and water pump are being set in the bottom of Heat Room, it is characterized in that: in cabinet, be uniformly distributed with mutual separated Heat Room is being set; Wind channel (3) is being set between adjacent Heat Room; Suitable for reading and the superposed air outlet of upper level Heat Room of wind channel (3) is communicated with, and the end opening of wind channel (3) is communicated with the air inlet of next stage Heat Room, and the exhaust blower air outlet of final stage Heat Room passes to outside the casing.
2. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 1 is characterized in that: the profile parallelogram of upright direct evaporative cooler (1), wherein the windward side and the horizontal angle of direct evaporative cooler (1) bottom are acute angle.
3. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 1; It is characterized in that: the pumping line of next stage Heat Room water tank (4) is connecting the spray equipment (2) of upper level Heat Room; The outlet pipe of chopped-off head Heat Room water tank (4) water pump is connecting user (5), and user's (5) outlet pipe is connecting the spray equipment (2) of final stage Heat Room.
4. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 3; It is characterized in that: the air inlet duct (7) with import is being set in the front portion of cabinet; The outlet of air inlet duct (7) is connecting the air inlet of chopped-off head Heat Room, and surface cooler (6) is installed in the import of air inlet duct (7).
5. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 4 is characterized in that: user's (5) outlet pipe is connecting surface cooler (6), and the outlet pipe of surface cooler (6) is connecting the spray equipment (2) of final stage Heat Room.
6. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 4; It is characterized in that: chopped-off head Heat Room water tank (4) water pump is connecting user (5) and surface cooler (6) respectively through three-way pipe, and the pipeline that the outlet pipe of user's (5) outlet pipe and surface cooler (6) compiles through three-way connection is being connected the spray equipment (2) of final stage Heat Room.
7. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 4; It is characterized in that: the two-stage surface cooler (6) that the water route series connection is installed in the import of air inlet duct (7); The outlet pipe of the water tank of chopped-off head Heat Room (4) water pump is connecting the water inlet of user (5) and second level surface cooler (6) respectively through three-way pipe; User's (5) outlet pipe is connected with the series connection water pipe of two-stage surface cooler (6), and the outlet pipe of first order surface cooler (6) is connecting the spray equipment (2) of final stage Heat Room.
8. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 4; It is characterized in that: outlet is being set on cabinet the wind channel (8) of air-introduced machine is being housed, the air inlet that the outlet of air inlet duct (7) is connecting the chopped-off head Heat Room simultaneously and the import of wind channel (8) or wherein the wind channel of one-level Heat Room (3) opening be connected the import of wind channel (8).
9. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 8 is characterized in that: the outlet pipe of chopped-off head Heat Room water tank (4) water pump is connecting surface cooler (6), and the outlet pipe of surface cooler (6) is connecting the spray equipment (2) of final stage Heat Room.
10. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 8; It is characterized in that: the outlet pipe of chopped-off head Heat Room water tank (4) water pump is connecting user (5); User's (5) outlet pipe is connecting the water inlet of surface cooler (6), and the outlet pipe of surface cooler (6) is connecting the spray equipment (2) of final stage Heat Room.
11. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 8; It is characterized in that: the two-stage surface cooler (6) that the water route series connection is installed in the import of air inlet duct (7); The outlet pipe of chopped-off head Heat Room water tank (4) water pump is connecting the water inlet of second level surface cooler (6), and the outlet pipe of first order surface cooler (6) is connecting the spray equipment (2) of final stage Heat Room.
12. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 8; It is characterized in that: chopped-off head Heat Room water tank (4) water pump is connecting user (5) and surface cooler (6) respectively through three-way pipe, and the pipeline that the outlet pipe of user's (5) outlet pipe and surface cooler (6) compiles through three-way connection is being connected the spray equipment (2) of final stage Heat Room.
13. multistage countercurrent flow heat exchange-evaporation-refrigeration device according to claim 8; It is characterized in that: two-stage surface cooler (6) is installed in the import of air inlet duct (7); The water pump of chopped-off head Heat Room water tank (4) is connecting user (5) and second level surface cooler (6) through three-way pipe; Two-stage surface cooler (6) is through the water pipe series connection, and user's (5) outlet pipe is connected with the series connection water pipe of two-stage surface cooler (6), and the outlet pipe of first order surface cooler (6) is connecting the spray equipment (2) of final stage Heat Room.
14., it is characterized in that: on the cabinet wall on wind channel (3) top wherein, chopped-off head Heat Room rear portion, air inlet (9) is being set according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 described multistage countercurrent flow heat exchange-evaporation-refrigeration devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101133669A CN101922772B (en) | 2009-06-16 | 2009-06-16 | Multistage countercurrent flow heat exchange-evaporation-refrigeration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101133669A CN101922772B (en) | 2009-06-16 | 2009-06-16 | Multistage countercurrent flow heat exchange-evaporation-refrigeration device |
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| CN101922772A CN101922772A (en) | 2010-12-22 |
| CN101922772B true CN101922772B (en) | 2012-07-04 |
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| CN2009101133669A Active CN101922772B (en) | 2009-06-16 | 2009-06-16 | Multistage countercurrent flow heat exchange-evaporation-refrigeration device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103807935A (en) * | 2012-11-07 | 2014-05-21 | 莫少民 | Evaporative cooling double-effect air conditioner |
| CN104054622A (en) * | 2014-06-17 | 2014-09-24 | 南通鸿景天机械设备科技有限公司 | Underground water medium air cooler for breeding shed |
| CN106705698A (en) * | 2016-12-27 | 2017-05-24 | 中国人民解放军火箭军工程设计研究所 | Air intake and exhaust series cooling system of underground space two-stage cooling tower |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2401827Y (en) * | 1999-12-28 | 2000-10-18 | 于向阳 | Multi-stage evaporation refrigeration air conditioner |
| CN1865791A (en) * | 2006-06-15 | 2006-11-22 | 清华大学 | Cold supply device by using indirect evaporative cooling |
| CN201218574Y (en) * | 2008-06-04 | 2009-04-08 | 西安工程大学 | Heat pipe cold recovery type evaporation-cooling high temperature water chilling unit |
-
2009
- 2009-06-16 CN CN2009101133669A patent/CN101922772B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2401827Y (en) * | 1999-12-28 | 2000-10-18 | 于向阳 | Multi-stage evaporation refrigeration air conditioner |
| CN1865791A (en) * | 2006-06-15 | 2006-11-22 | 清华大学 | Cold supply device by using indirect evaporative cooling |
| CN201218574Y (en) * | 2008-06-04 | 2009-04-08 | 西安工程大学 | Heat pipe cold recovery type evaporation-cooling high temperature water chilling unit |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2000-266447A 2000.09.29 |
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