CN101297167B - Supercooler, steam compression system and supercooling method - Google Patents

Supercooler, steam compression system and supercooling method Download PDF

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Publication number
CN101297167B
CN101297167B CN2005800519258A CN200580051925A CN101297167B CN 101297167 B CN101297167 B CN 101297167B CN 2005800519258 A CN2005800519258 A CN 2005800519258A CN 200580051925 A CN200580051925 A CN 200580051925A CN 101297167 B CN101297167 B CN 101297167B
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China
Prior art keywords
cold
pipeline
subcooler
producing medium
electrothermal
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Expired - Fee Related
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CN2005800519258A
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Chinese (zh)
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CN101297167A (en
Inventor
R·拉哈克什南
于笑梅
M·K·萨姆
G·M·多布斯
D·图
C·-Y·蔡
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Carrier Corp
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Carrier Corp
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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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • 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
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers

Abstract

A subcooler (15) for a vapor compression cycle having a refrigerant. The subcooler (15) including a conduit (45) and one or more thermoelectric modules (17). The conduit (45) being in fluid communication with the vapor compression cycle for flow of the refrigerant therethrough. Each of the one or more thermoelectric modules (17) has a cold side in thermal communication with an inner volume of the conduit (45) for subcooling the refrigerant.

Description

Subcooler, steam compression system and supercooling method
Technical field
The present invention relates generally to steam compression cycle, relate more specifically to be used for the method and apparatus that cooling water coil, fan coil etc. to steam compression cycle, air processing machine carry out supercooling (or cooling again).
Background technology
The cold-producing medium supercooling is known with the performance that strengthens steam compression cycle.The overcooled mode of prior art cold-producing medium generally comprises uses mechanical type supercooling or suction line heat exchanger.The mechanical type supercooling can comprise the use secondary vapor compression loop, but it need increase extra equipment (comprising compressor and expansion valve) for existing system.The suction line heat exchanger can provide the performance of enhancing and reduce cost, but they need use secondary liquid (that is cooling water) that cold-producing medium is carried out supercooling.
In addition, the mechanical type supercooling also has following defective: need a lot of elements, thereby causing safeguarding increases and the stability reduction; Noisy work is provided and has caused transition state (for example, circulation) to control inaccurate relative slow cool down with temperature; And may be inefficient.
Therefore, need a kind of improved subcooler, it does not need secondary loop or secondary liquid.Method and apparatus of the present invention has been avoided the needs to secondary loop or secondary liquid by using subcooler.
One object of the present invention is to provide the quick acting cooling with minimum transients, and the temperature control of meticulous adjusting is provided.
Another object of the present invention is to reduce evaporator coil temperature, and improves the humidity control potentiality of coil pipe.
A further object of the present invention is to reduce the equipment that is increased, to improve stability, to reduce noise.
Another object of the present invention is, under the situation that has or do not have humidity control enhancing benefit, provides the energy benefit.
Summary of the invention
In one aspect, provide the subcooler of the steam compression cycle that is used to have cold-producing medium.Described subcooler comprises pipeline and one or more electrothermal module.Pipeline is communicated with the steam compression cycle fluid, is used to make cold-producing medium to flow through wherein.Each of one or more electrothermal modules has the cold side of inner volume thermal communication with the pipeline that is used for the supercooling cold-producing medium.
In one aspect of the method, steam compression system comprises: by pipeline compressor connected to one another, condenser and evaporimeter, and provide subcooler.This subcooler has the one or more electrothermal modules that are connected to pipeline, and each of wherein one or more electrothermal modules has and is used for the cold side that the pipeline inner volume thermal communication of cold-producing medium is wherein flow through in supercooling.
The method of supercooling steam compression cycle is provided in one aspect of the method.This method comprises the pipeline that is provided for flow of refrigerant, it forms fluid with compressor, condenser and evaporimeter and is communicated with, and by the inner volume of a plurality of electrothermal modules with the thermoelectric supercooling pipeline of mode of conduction, each of these a plurality of electrothermal modules all has the cold side with the inner volume thermal communication of pipeline, and with the warm side of this inner volume thermal insulation.
Each of one or more electrothermal modules can have the warm side with the inner volume thermal insulation of pipeline.One or more electrothermal modules can be embedded in the pipeline, and cold side can directly contact with cold-producing medium.One or more electrothermal modules can further comprise secondary heat exchanger, to carry out indirect heat exchange with cold-producing medium.One or more electrothermal modules can comprise thermoelectric heat exchanger.Thermoelectric heat exchanger can be air or liquid thermoelectric heat exchanger.One or more electrothermal modules can be connected to the outer surface of pipeline, and form thermal communication with cold-producing medium.Subcooler can further comprise fan, so that the air stream with the warm side thermal communication of one or more electrothermal modules to be provided.
By detailed description, accompanying drawing and claims hereinafter, above-mentioned or other feature and advantage of the present invention will be recognized to those skilled in the art and can understand.
Description of drawings
Fig. 1 schematically shows the steam compression cycle with subcooler of the present invention.
The specific embodiment
Refer now to Fig. 1, illustrate the exemplary embodiment of steam compression cycle (indicating with Reference numeral 10 generally).Steam compression cycle 10 uses subcooler 15 to come the cold-producing medium of supercooling steam compression cycle 10.Subcooler 15 can be used to steam compression cycle, and above-mentioned steam compression cycle is as large-scale or small refrigerant circulation with the supermarket bazaar sale product of low performance coefficient (COP) (for example being lower than 3) and any other type.In addition, when having guaranteed that cooling water coil in the air processing machine or fan coil also can be by pre-cooled in their cooling or during the transient change in the wet-out property.
Subcooler 15 can be used in the known steam compression cycle.The element that steam compression cycle known in the field comprises generally for example is: compressor 20, evaporimeter 25, condenser 30 and constant temperature or thermal expansion valve 35.In the exemplary embodiment of Fig. 1, cold-producing medium flows to condenser 30 from compressor 20 via first pipeline 40, and is as shown in arrow 42.Condenser 30 is air cooling or water-cooled condenser, is used for condensating refrigerant.Cold-producing medium leaves condenser 30 and arrives second pipeline 45, and is as shown in arrow 44.Subcooler 15 is connecting second pipeline 45.When cold-producing medium when condenser 30 is flowed through second pipeline 45, subcooler 15 carries out supercooling in thermoelectric mode to cold-producing medium.The 3rd pipeline 47 is connected to thermal expansion valve 35 with subcooler 15.Cold-producing medium the 3rd pipeline of flowing through arrives thermal expansion valve 35, and is as shown in arrow 46.Thermal expansion valve 35 has reduced the pressure of cold-producing medium, with liquid and the steam that obtains to mix.Cold-producing medium enters into evaporimeter 25 by the 4th pipeline 48, and is as shown in arrow 49.By the heat transfer that provides from refrigeration space 75, evaporimeter 25 evaporates liquid basically.Discharge space (rejection space) 70 and be positioned under the evaporimeter 25, make the heat of flash-pot 25 can not be discharged to refrigeration space 75.Cold-producing medium leaves evaporimeter 25 to the 5th pipelines 50, and is as shown in arrow 51.Cold-producing medium enters into compressor 20 from the 5th pipeline 50.Compressor 20 compressed refrigerants are also finished steam compression cycle 10.
Subcooler 15 can have one or more electrothermal modules 17.Electrothermal module 17 uses produce cooling by the electric energy that energy source 18 offers this module.Therefore, electrothermal module 17 can be directly connected to second pipeline 45 to eliminate the demand to liquid-liquid heat exchanger, secondary liquid or secondary loop.
Electrothermal module 17 can be embedded in second pipeline 45, so that cold side or huyashi-chuuka (cold chinese-style noodles) be upcountry towards the inner volume of second pipeline 45, and warm side or warm face are towards the direction away from second pipeline, 45 inner volumes.In the electrothermal module 17 cold side of each all with the inner volume thermo-contact of second pipeline 45, so that the contact cooling of cold-producing medium to be provided, warm simultaneously side all with the inner volume thermal insulation of second pipeline 45.
Electrothermal module 17 can comprise the thermoelectric heat exchanger of using any known refrigerant.Air or liquid can be pumped into this thermoelectric heat exchanger, to absorb the heat from cold-producing medium in second pipeline 45.Perhaps, electrothermal module 17 can have secondary heat exchanger, to carry out indirect heat exchange with cold-producing medium.Based on the relevant factor of concrete cooling requirement or dehumidifying demand and other and steam compression cycle 10, concrete heat exchanger is different.
Electrothermal module 17 also can be connected on the outer surface of second pipeline 45, so that cold side or huyashi-chuuka (cold chinese-style noodles) be upcountry towards the inner volume of second pipeline 45, and warm side or warm face are towards the direction away from second pipeline, 45 inner volumes.The cold side of each all forms thermal communication with the inner volume of second pipeline 45 in the electrothermal module 17, so that the cooling to cold-producing medium to be provided, warm simultaneously side all with the inner volume thermal insulation of second pipeline 45.In order further to improve cooling effectiveness, fan 19 makes air flow at the outer surface or the external surface peripheral of second pipeline 45, warms up the air that side liquids are communicated with to provide with electrothermal module 17, thereby removes or eject the heat from warm side.
By conduction, the cold side of each makes the refrigerant cools of second pipeline 45 of flowing through in the electrothermal module 17.Second pipeline 45 can be made by heat conducting material, yet, can change this material in steam compression cycle 10 relevant factors based on concrete cooling requirement or other.Can change the number of the electrothermal module 17 that is used for second pipeline 45 based on concrete cooling requirement or other and subcooler 15 relevant factors.The concrete number of electrothermal module 17 and the inner surface or heat conducting structure of inside part or the method that make second pipeline 45, can based on concrete cooling requirement or other and shown in steam compression cycle 10 related factors and changing.Therefore, the demand to secondary liquid or secondary loop has been avoided in the use of electrothermal module 17, compare with the mechanical type subcooler, reduced the equipment that increases, the quick acting thermoelectric-cooled is provided, with minimum transients and provide the temperature of meticulous adjusting and/or humidity control, the stability that increases and the noise that for mechanical supercooling, reduces, but also provide the energy benefit.
The particular type of the electrothermal module 17 that is utilized (comprising material, size and dimension) can change according to the real needs of subcooler 15.Preferably, the size and dimension of the cold side of electrothermal module 17 and warm side maximizes between second pipeline 45 and the cold side and air and thermo-contact between the warm side or thermal communication (for example surface area) outside second pipeline 45.
Provide concrete structure or the method for energy source 18 to change according to the real needs of subcooler 15 to electrothermal module 17.Electrothermal module 17 can be the thermoelectric device that is directly driven by the dc source such as battery, portable fuel battery, barrier-layer cell etc., does not so just need the conversion of AC-to DC.Subcooler 15 can guarantee not have gas residue when condensation phase finishes, thereby guarantees to have maximum capacity at constant temperature or thermal expansion valve 35 places.In the system for usage ratio control, the ratio characteristic of electrothermal module 17 can become the means of realizing ideal and using.This can be avoided using full-open type or full cut-off formula magnetic valve, for example occurs in on-off control system usually.Electrothermal module 17 can be configured to respect to 45 one-tenth any fluid flow configuration of pipeline, to allow best energy exchange.This layout can be common flow pattern, adverse current type or the configuration of cross-current ejector half, and perhaps any other is suitable for the configuration of space or other design problems.
Although described the disclosure in conjunction with one or more exemplary embodiments, what it will be understood to those of skill in the art that is: under the situation that does not exceed the scope of the invention, can make various distortion, and available equivalents carries out its parts are replaced.In addition, under the situation that does not exceed the scope of the invention, many modifications can be carried out so that particular case or material are adapted to instruction of the present disclosure.Therefore, open should not be limited to of the present invention and disclosed (one or more) specific embodiment as the enforcement optimal mode of the present invention of expection, the present invention should comprise all embodiment in the scope that falls into claims.

Claims (18)

1. subcooler (15) that is used to have the steam compression cycle of cold-producing medium, described subcooler (15) comprising:
The pipeline (45) that is communicated with described steam compression cycle fluid is used to allow described cold-producing medium flow through wherein; And
One or more electrothermal modules (17), in wherein said one or more electrothermal module (17) each all has the cold side with the inner volume thermal communication of described pipeline (45), be used for described cold-producing medium being carried out supercooling by conduction, but also having warm side with described inner volume thermal insulation, at least one in wherein said one or more electrothermal modules (17) is embedded in the described pipeline (45).
2. subcooler as claimed in claim 1 (15), each in wherein said one or more electrothermal modules (17) all have the warm side with the described inner volume thermal insulation of described pipeline (45).
3. subcooler as claimed in claim 1 (15), wherein said cold side directly contacts with described cold-producing medium.
4. subcooler as claimed in claim 1 (15), wherein said one or more electrothermal modules (17) further comprise secondary heat exchanger, are used for carrying out indirect heat exchange with described cold-producing medium.
5. subcooler as claimed in claim 1 (15), wherein said one or more electrothermal modules (17) comprise thermoelectric heat exchanger.
6. subcooler as claimed in claim 5 (15), wherein said thermoelectric heat exchanger are air or liquid thermoelectric heat exchanger.
7. subcooler as claimed in claim 1 (15), at least one of wherein said one or more electrothermal modules (17) is connected to the outer surface of described pipeline (45), and with described cold-producing medium thermal communication.
8. subcooler as claimed in claim 7 (15) further comprises fan (19), so that the air stream with the warm side thermal communication of described one or more electrothermal modules (17) to be provided.
9. a steam compression system (10) comprising:
By pipeline (40,45,47,48,50) compressors connected to one another (20), condenser (30) and evaporimeter (25); And
Subcooler (15), have the one or more electrothermal modules (17) that are connected to described pipeline (45), wherein, in described one or more electrothermal module (17) each has the cold side with the inner volume thermal communication of described pipeline (45), be used for the cold-producing medium that flows through is wherein carried out supercooling, and described one or more electrothermal module (17) is in the upstream of expansion valve (35).
10. steam compression system as claimed in claim 9 (10), each in wherein said one or more electrothermal modules (17) all have the warm side with the described inner volume thermal insulation of described pipeline (45).
11. steam compression system as claimed in claim 9 (10), wherein said one or more electrothermal modules (17) are embedded in the described pipeline (45), with the described cold-producing medium of contact cooling.
12. steam compression system as claimed in claim 9 (10), wherein said one or more electrothermal modules (17) comprise thermoelectric heat exchanger.
13. steam compression system as claimed in claim 12 (10), wherein said thermoelectric heat exchanger are air or liquid thermoelectric heat exchanger.
14. steam compression system as claimed in claim 9 (10), wherein said one or more electrothermal modules (17) are connected to the outer surface of described pipeline (45), and with described cold-producing medium thermal communication.
15. steam compression system as claimed in claim 14 (10), wherein said subcooler (15) further comprises fan (19), so that the air stream with the warm side thermal communication of described one or more electrothermal modules (17) to be provided.
16. one kind is carried out overcooled method to steam compression cycle, comprising:
Be provided for the pipeline (45) of flow of refrigerant, described cold-producing medium is communicated with compressor (20), condenser (30) and evaporimeter (25) fluid;
In thermoelectric mode the inner volume of described pipeline (45) is carried out supercooling by conduction by a plurality of electrothermal modules (17), in described a plurality of electrothermal module (17) each all has the cold side with the described inner volume thermal communication of described pipeline (45), and with the warm side of described inner volume thermal insulation; With
Between described condenser (30) and described expansion valve (35), described a plurality of electrothermal module (17) is contacted with described inner volume.
17. method as claimed in claim 16, wherein a plurality of electrothermal modules (17) are cooled by fan (19).
18. method as claimed in claim 16, wherein said a plurality of electrothermal modules (17) are embedded in the described pipeline (45), with the described cold-producing medium of contact cooling.
CN2005800519258A 2005-08-29 2005-08-29 Supercooler, steam compression system and supercooling method Expired - Fee Related CN101297167B (en)

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PCT/US2005/030747 WO2007027171A1 (en) 2005-08-29 2005-08-29 Thermoelectric device based refrigerant subcooling

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CN101297167B true CN101297167B (en) 2011-09-14

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WO (1) WO2007027171A1 (en)

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Publication number Publication date
EP1920200A1 (en) 2008-05-14
CA2620391A1 (en) 2007-03-08
US20090266084A1 (en) 2009-10-29
HK1125692A1 (en) 2009-08-14
EP1920200A4 (en) 2011-04-20
WO2007027171A1 (en) 2007-03-08
CN101297167A (en) 2008-10-29

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