CN101476833A - High-efficiency coolant heat transmission system - Google Patents

High-efficiency coolant heat transmission system Download PDF

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Publication number
CN101476833A
CN101476833A CNA2009100004779A CN200910000477A CN101476833A CN 101476833 A CN101476833 A CN 101476833A CN A2009100004779 A CNA2009100004779 A CN A2009100004779A CN 200910000477 A CN200910000477 A CN 200910000477A CN 101476833 A CN101476833 A CN 101476833A
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CN
China
Prior art keywords
heat
cooler
radiator
transmission system
heat transmission
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
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CNA2009100004779A
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Chinese (zh)
Inventor
万辅君
宋一舟
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.)
BEACON TECHNOLOGY (BEIJING) Co Ltd
SHANGHAI BEACON ELECTRIC TECHNOLOGY Co Ltd
Original Assignee
BEACON TECHNOLOGY (BEIJING) Co Ltd
SHANGHAI BEACON ELECTRIC TECHNOLOGY Co Ltd
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Application filed by BEACON TECHNOLOGY (BEIJING) Co Ltd, SHANGHAI BEACON ELECTRIC TECHNOLOGY Co Ltd filed Critical BEACON TECHNOLOGY (BEIJING) Co Ltd
Priority to CNA2009100004779A priority Critical patent/CN101476833A/en
Publication of CN101476833A publication Critical patent/CN101476833A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a high-efficiency refrigerant heat transfer system, which comprises a cooler and a radiator, wherein a connecting pipe is arranged between the cooler and the radiator, and a fluid pump is arranged in the connecting pipe; and the cooler, the radiator and the connecting pipe are filled with heat transfer working substances. The system utilizes gasification latent heat which is absorbed during the gasification of the heat transfer working substances and is discharged during the coagulation to conduct heat, and the fluid pump accelerates the flow rate of the heat transfer working substances, so the heat transfer efficiency is greatly higher than that of a method for directly conducting the heat by utilizing sensible heat. The system is widely applied, can realize high-efficiency heat dissipation on areas which needs heat dissipation in low temperature environment, can also be applied to waste heat recovery at the same time, can also be used for reheating function of the prior air-conditioning equipment to substitute an electric heater, and has obvious energy-saving effect.

Description

A kind of high-efficiency coolant heat transmission system
Technical field
The present invention relates to heat dissipation technology, specifically, is a kind of high-efficiency coolant heat transmission system, heat can be delivered to a zone that temperature is lower from a higher zone of temperature expeditiously.
Background technology
Air-conditioning technical is to use technology very widely at present.The principle of air-conditioning is contrary Carnot cycle, promptly by compression, condensation, throttling, evaporating course, makes working medium realize heat transfer in refrigeration system, will absorb or distribute heat in the Working fluid phase changing process, and the heat of low-temperature region is passed to high-temperature area realization kind of refrigeration cycle.But, air-conditioning system is when realizing that heat with high-temperature area is sent to low-temperature region, (as winter refrigeration), its normal operation need be taked special design, to guarantee the normal operation of system, and this method of operation still needs compressor operating, realizes cooling condition by compression and throttling, has increased energy resource consumption.
For energy savings, people have invented heat pipe.Heat pipe is to utilize the evaporation and the condensation of working fluid (working medium) to transmit heat.Heat pipe generally is made up of shell, imbibition core and end cap, and preparation method is with the inside heat pipe state that is evacuated, and charges into the liquid of special composition then, and this boiling point of liquid is very low, easily boiling; Tube wall has the imbibition core, is made of the capillary porous material.One end of heat pipe is the evaporation part, the heat of liquid in pipe outside this partially absorbs pipe, and evaporation becomes gas; Gas moves to the condensation part of the heat pipe other end along tube chamber, emits heat in the condensation part, condenses into liquid; Liquid utilizes capillarity to move to the evaporation part along the imbibition core again.Like this, heat pipe just has been transmitted to the other end to heat from an end.The gasification latent heat that absorbs when having utilized phase transformation owing to heat pipe or emit transmits heat, and its heat transfer efficiency is higher than the general heat exchange pattern that only utilizes sensible heat transfer far away.
But the design feature of heat pipe has caused it also to have limitation in application:
1, heat pipe is to utilize infiltration phenomenon capillaceous to realize the transmission of liquid refrigerant in condensation part and evaporation part, and the heat of single heat pipe transmits little, and transmits apart from being very limited.
2, hot pipe technique is a working medium of having concentrated gas phase and liquid phase two states on a heat pipe, can't realize distribution and control to working medium flow, therefore can't be designed to the refrigeration system that the unsteady flow amount is regulated.
Adopt common heat-transfer working medium, as water, it also is heat dissipation technology commonly used that indoor heat is delivered to atmospheric environment, but this technology is when environment temperature is lower than zero degrees celsius, needs to adopt antifreezing measures, and heat transfer efficiency is low.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of heat transfer efficiency height, heat transfer distances high-efficiency coolant heat transmission system far away, easy to adjust.
In order to address the above problem, the invention provides a kind of high-efficiency coolant heat transmission system, comprise cooler and radiator, be provided with tube connector between described cooler and the radiator, be provided with the fluid pump in the described tube connector; Fill working medium in described cooler, radiator and the tube connector.
Further, the tube connector between described cooler and the radiator has two, is respectively to connect tracheae and connect adapter; Described working medium endothermic gasification in cooler becomes gaseous state, enters radiator by described connection tracheae, and heat release changes into liquid state in radiator, enters described cooler by the described adapter that connects again.
Further, described fluid pump is a magnetic drive pump.
Further, described magnetic drive pump comprises motor, interior magnet rotor, outer magnet rotor separation sleeve and impeller, and described motor links to each other with outer magnet rotor, described impeller with described in magnet rotor link to each other, bump between rotor and the outer magnet rotor in described and be provided with separation sleeve.
Further, described fluid pump is the variable frequency adjustment flow pump, and described variable frequency adjustment flow pump is connected with controller.
Further, described fluid pump is arranged on and connects in the adapter.
Further, the described company in the adapter also is provided with control valve, and described control valve links to each other with controller, is used to regulate working medium flow.
Further, the liquid/solid critical-temperature of described working medium is below-150 degrees centigrade.
Further, described working medium is freon.
Further, the described company between adapter and the described cooler is provided with liquid-dividing head, will enter cooler behind the liquid refrigerant demultiplexing.
The present invention utilizes normal temperature, mesolow the material of gas-liquid two-phase conversion can take place as heat-transfer working medium down, the gasification latent heat that absorbs when using liquid heat-transfer working medium and gasifying in cooler is delivered to the radiator that is in low-temperature region with the heat of high-temperature area, release heat and be transformed into liquid phase in radiator again, the fluid pump is accelerated the flowing velocity of liquid heat-transfer working medium, so its heat transfer efficiency is much higher than the method for utilizing sensible heat directly to conduct heat.In addition, in the liquid line between the present invention is applied in the fluid pump from the radiator to the cooler, improve the heat-transfer working medium flowing velocity, can and be used for separately independent setting of radiator that heat release is condensed with the cooler of the vaporization that is used to absorb heat, can be so that heat transfer distances be very far away, and can regulate the flow of working medium easily, to adapt to different Cooling and Heat Source temperature and to regulate heat output, and the residing low-temperature region of radiator can be natural environment, can be the cold water of making by conventional refrigeration air-conditioner, can also be underground water etc.The present invention is widely used, and can be implemented in the zone implementation heat radiation that low temperature environment needs heat radiation is arranged, and also can be applicable to the waste heat recovery aspect simultaneously, can also be used for conventional air-conditioning equipment hot merit energy again, substitutes electric heater, has remarkable energy saving effect.
Description of drawings
Fig. 1 is the structure principle chart of high-efficiency coolant heat transmission system of the present invention;
Fig. 2 is the structure principle chart of the multichannel cooling system of high-efficiency coolant heat transmission system of the present invention;
Fig. 3 is the structural representation of first embodiment of high-efficiency coolant heat transmission system of the present invention;
Fig. 4 is the structural representation of second embodiment of high-efficiency coolant heat transmission system of the present invention;
Fig. 5 is the structural representation of the 3rd embodiment of high-efficiency coolant heat transmission system of the present invention.
Among the figure: 1. radiator, 2. cooler, 3. liquid-dividing head, 4. fluid pump, 5. connect adapter, 6. connect tracheae, 7. control valve, 8. bypass pipe, 9. condenser, 10. evaporimeter, 11. blower fan, 12 compressors, 13. valves, 14. first coil pipe, 15. second coil pipes, 16. heat exchangers, 17. first heat exchange coil, 18. second heat exchange coils, 19. three-way switch valves.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, high-efficiency coolant heat transmission system of the present invention comprises cooler 2 and radiator 1, between cooler 2 and the radiator 1 company's of being respectively equipped with adapter 5 be connected tracheae 6, connect and fill fluid pump 4 in the adapter 5.Connect between adapter 5 and the cooler 2 and be provided with liquid-dividing head 3, be connected with cooler 2 after will connecting adapter 5 demultiplexings.Cooler 2 is used to cool off room air, and radiator is used for heat is dispersed into outdoor environment.
It is the heat transfer medium temperature working medium of representative that working medium adopts with freon, and (boiling temperature under 1~15Bar) can be controlled its boiling temperature by changing pressure between-30~50 degrees centigrade in middle pressure for it.Working medium is at cooler 2 endothermic gasifications, and the gaseous working medium after the gasification enters radiator 1 through connecting tracheae 6, emits heat in radiator 1, and it is liquid that regelation becomes; Liquid working medium enters cooler 2 through connecting adapter 5 under the effect of fluid pump 4.Through this circulation, system of the present invention is transmitted to low-temperature space with heat by the high-temperature region, thereby realizes the heat conduction.The gasification latent heat that absorbs when having utilized Working fluid phase changing owing to the present invention and emit transmits heat, so its heat transfer efficiency is very high, can reach the hundreds of times of the fine copper capacity of heat transmission.Because the present invention between the two connects the cooler 2 of heat absorption and independent respectively setting of radiator 1 of heat release by tube connector, connect adapter 5 and be provided with fluid pump 4, therefore can realize remotely transferring.
A kind of application of the present invention be long-term thermal field occurred frequently high-efficiency radiator.Cooler among Fig. 12 is arranged in the long-term thermal field occurred frequently institute, and can adds fan and strengthen cross-ventilation, be used to absorb the heat that long-term thermal field occurred frequently gives out; Be arranged on the radiator among Fig. 11 outdoor or other low temperature environment, be used for working medium is distributed from the heat that long-term thermal field occurred frequently absorbed.Should be with also being the embedded server special air conditioner that aims at the use of golf calorific value server.
Entering between the cooler 2, liquid refrigerant can enter cooler 2 by liquid-dividing head 3 demultiplexings, improves heat exchange efficiency.The fluid pump is arranged on the benefit that connects on the adapter 5 is, the density of liquid refrigerant is big, so the flow of fluid pump can be less relatively, to save energy.When being heat-transfer working medium with freon, fluid pump 4 is magnetic drive pump preferably.Using the benefit of magnetic drive pump is good seal performance.Magnetic drive pump is made up of motor, outer magnet rotor, interior magnet rotor and non-magnetic separation sleeve, and motor links to each other with outer magnet rotor, and interior magnet rotor is connected with impeller.When magnet rotor outside the motor drives rotated, magnetic field energy penetrated air-gap and namagnetic substance, drove the interior magnet rotor that links to each other with impeller and did rotation synchronously, and the non contact transmission of realization power is converted into static seal with movable sealing.Because pump shaft, interior magnet rotor be by the pump housing, separation sleeve complete closed, thereby thoroughly solve problems such as " run, drip, leak ", eliminated potential safety hazard inflammable, explosive, poisonous, that hazardous medium leaks by pump seal.Certainly, also can adopt the pump of other type as required, for example can be applied to the totally-enclosed water pump of freon system.
Owing in application, may need to regulate flow,, regulate heat output to adapt to different Cooling and Heat Source temperature, therefore can adopt the variable frequency adjustment flow pump, the variable frequency adjustment flow pump links to each other with controller, to regulate the rotating speed of fluid pump, thereby the control working medium flow reaches the purpose of regulating heat output.Also can even on the adapter 5 control valve be set, the amount of opening that is controlled to adjust valve by controller is regulated working medium flow.
As shown in Figure 2, high-efficiency coolant heat transmission system of the present invention can be joined a plurality of coolers 2 by a radiator 1 and be used, and is respectively arranged with a control valve 7 on company's adapter 5 of each cooler 2, can realize " one drag many " system thus.This structure also can be applied to multizone heat radiation place, promptly when a plurality of heating region is arranged, can one cover cooler respectively be set when indoor at each heating region, outputing to a cover radiator after the parallel connection of many cover coolers dispels the heat, thereby can improve the integrated level of system, be convenient to install, reduce cost.
As shown in Figure 3, be the schematic diagram of first embodiment of the present invention's use in parallel with compressor refrigeration system.Among this embodiment, comprise a cover compression machine cooling system, this system is identical with the compressor refrigeration system of prior art, also comprises condenser 9, expansion valve, evaporimeter 10 and compressor 12.In addition, in the present embodiment, side at condenser 9 also is provided with radiator 1, also be provided with cooler 2 in evaporimeter 10 1 sides, be connected by tube connector between radiator 1 and the cooler 2, tube connector has two, the company's of being respectively adapter 5 be connected tracheae 6, make between cooler 2 and the radiator 1 and form the loop, even be provided with fluid pump 4 on the adapter 5.Be filled with working medium in cooler 2, radiator 1 and the tube connector.In the said apparatus, condenser 9 and radiator 1 are arranged on the outdoor of machine room, and it is indoor that all the other devices are arranged on machine room as evaporimeter 10, compressor 12, expansion valve and cooler 2 etc.When needed, can blower fan 11 be set, to improve radiating efficiency at condenser 9 and evaporimeter 10 1 sides.
In summer, outside air temperature is higher than indoor air temperature, and at this moment, radiator 1 and cooler 2 are not worked, and by the compressor cooling periodic duty that condenser 9, expansion valve, evaporimeter 10 and compressor 12 constitute, indoor heat is moved outdoor, keeps constant indoor temperature.
In excessive season in spring and autumn, when outside air temperature is lower than indoor air temperature certain value (being generally 2~3 degree), open radiator 1 and cooler 2, at this moment, the compressor cooling that is made of condenser 9, expansion valve, evaporimeter 10 and compressor 12 circulates and is worked simultaneously by the natural cool cycles that radiator 1 and cooler 2 constitute.But, since natural cool cycles to utilize indoor/outdoor temperature-difference that the indoor heat of part is delivered to outdoor, born the part cooling load, therefore can reduce the load of compressor cooling circulation, save portion of energy.
In the winter time, outside air temperature is far below indoor air temperature, at this moment, the compressor cooling circulation that is made of condenser 9, expansion valve, evaporimeter 10 and compressor 12 quits work, the natural cool cycles that is made of radiator 1 and cooler 2 is delivered to indoor heat outdoor fully, whole process of refrigerastion is finished by indoor/outdoor temperature-difference fully, and system only keeps the fluid pump 4 of refrigeration working medium circulation and the blower fan 11 (if there is) consumed energies that quicken heat radiation, thereby has saved the energy greatly.
In application, in order to adapt to different loads, temperature constant in the holding chamber, the fluid pump can adopt the fluid pump of variable frequency adjustment flow, and control valve can also be set in tube connector, to reach the purpose of accurate flow adjustment.
As shown in Figure 4, be the schematic diagram of second embodiment of the present invention's use in parallel with compressor refrigeration system.Wherein, the structure of compressor refrigeration system is same as the prior art, comprises evaporimeter 10, compressor 12, condenser 9, expansion valve and other accessory, and the present invention is installed a bypass pipe 8 additional in compressor 12 front and back, and valve 13 is set on bypass pipe 8; Simultaneously, an adapter 5 even in parallel on the pipeline between condenser 9 and the evaporimeter 10, and fluid pump 4 and valve 13 are being set connecting on the adapter 5.The operation principle of this system is: if outdoor temperature (being condenser 9 residing environment temperatures) is higher than indoor temperature (being evaporimeter 10 residing environment temperatures), then close bypass pipe 8 and the valve 13 that connects on the adapter 5, the contrary Carnot cycle that utilizes cold-producing medium to form between evaporimeter 10, compressor 12, condenser 9 and expansion valve realizes refrigeration; If outdoor temperature is lower than the certain numerical value of indoor temperature (generally being more than 2~3 degrees centigrade), then open the valve 13 on bypass pipe 8 and the company's adapter 5, cold-producing medium formation heat pipe-type between evaporimeter 10, bypass pipe 8, condenser 9 and company's adapter 5 circulates and is delivered to indoor heat outdoor.Like this, when outdoor temperature is low (for example winter), just can close compressor 12, thus the realization purpose of energy saving.
As shown in Figure 5, be the structure principle chart of the 3rd embodiment of special air conditioning for device room of the present invention.Among this embodiment, comprise a cover compression machine cooling system, this system is identical with the compressor refrigeration system of prior art, also comprises condenser 9, expansion valve, evaporimeter 10 and compressor 12.In addition, in the present embodiment, side at condenser 9 also is provided with radiator 1, evaporimeter 10 wherein the import and export of first coil pipe 14 link to each other with compressor 12 with expansion valve respectively, the import of second coil pipe 15 links to each other with cooler 1, outlet links to each other with fluid pump 4, and fluid pump 4 links to each other by the import of tube connector with first heat exchange coil 17 of a heat exchanger 16, and the outlet of first heat exchange coil 17 of heat exchanger 16 links to each other with cooler 1; Be filled with water in second heat exchange coil 18 of heat exchanger 16, it imports and exports the heat sink in the junctor chamber.In the said apparatus, heat exchanger 16 is arranged on indoor, and remaining device is arranged on outdoor.Wherein, when being heat-transfer working medium with freon, above-mentioned fluid pump 4 is magnetic drive pump preferably.Bypass pipe 8 is set in the import and export of cooler 1, forms cooler and two branch roads of bypass pipe, three-way switch valve 19 is set, can between two branch roads, switch by three-way switch valve 19 at bypass pipe 8 and tube connector connecting place.
In summer, close the cooler branch road by three-way switch valve 19, open the bypass pipe branch road, by condenser 9, expansion valve, the compressor cooling periodic duty that evaporimeter 10 and compressor 12 constitute, in evaporimeter 10, first coil pipe 14 that participates in the compression refrigeration circulation is with the working medium cooling in second coil pipe 15, flow through after the working medium cooling in second coil pipe 15 first heat exchange coil 17 of indoor heat exchanger 16, working medium absorbs the heat of circulatory mediator in second heat exchange coil 18 (for example water) in heat exchanger 16, return evaporimeter 10 through bypass pipe 8 then, form circulation, conduct indoor heat.Water in second heat exchange coil 18 of heat exchanger 16 is transported to indoor each service equipment place again, is the service equipment cooling.
In excessive season in spring and autumn, outside air temperature is opened the cooler branch road by three-way switch valve 19 during a little less than indoor air temperature, closes the bypass pipe branch road, and the compression refrigeration circulation is worked simultaneously.At this moment, when working medium is flowed through cooler 1, in cooler 1, tentatively lowered the temperature, in evaporimeter 10, further lowered the temperature then.Thereby can partly reduce the load of compressor cooling circulation, save the part energy.
In the winter time, outside air temperature is far below indoor air temperature, at this moment, the cooler branch road is opened, and the bypass pipe branch road is closed, and is quit work by first coil pipe 14 of condenser 9, expansion valve, evaporimeter 10 and the compressor cooling circulation that compressor 12 constitutes, the kind of refrigeration cycle work that constitutes by second coil pipe 15 and the heat exchanger 16 of cooler 1, evaporimeter 10, working medium is cooled in cooler 1 absorb heat in heat exchanger 16 after, further cooling in evaporimeter 10 then.At this moment, keep indoor temperature by natural cool cycles fully, thereby saved a large amount of energy.
More than use all can to use and be lower than below the zero degrees celsius, the environment of minimum reaching-40 degree centigrade.
The above embodiment is the preferred embodiment that proves absolutely that the present invention lifts, and protection scope of the present invention is not limited thereto.Being equal to that those skilled in the art are done on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.

Claims (10)

1, a kind of high-efficiency coolant heat transmission system is characterized in that, comprises cooler and radiator, is provided with tube connector between described cooler and the radiator, is provided with the fluid pump in the described tube connector; Fill working medium in described cooler, radiator and the tube connector.
2, high-efficiency coolant heat transmission system as claimed in claim 1 is characterized in that, the tube connector between described cooler and the radiator has two, is respectively to connect tracheae and connect adapter; Described working medium absorbs heat to vaporize in cooler becomes gaseous state, enters radiator by described connection tracheae, and heat release changes into liquid state in radiator, enters described cooler by the described adapter that connects again.
3, high-efficiency coolant heat transmission system as claimed in claim 1 or 2 is characterized in that, described fluid pump is a magnetic drive pump.
4, high-efficiency coolant heat transmission system as claimed in claim 3, it is characterized in that, described magnetic drive pump comprises motor, interior magnet rotor, outer magnet rotor separation sleeve and impeller, described motor links to each other with outer magnet rotor, described impeller with described in magnet rotor link to each other, bump between rotor and the outer magnet rotor in described and be provided with separation sleeve.
5, high-efficiency coolant heat transmission system as claimed in claim 1 is characterized in that, described fluid pump is the variable frequency adjustment flow pump, and described variable frequency adjustment flow pump is connected with controller.
6, high-efficiency coolant heat transmission system as claimed in claim 2 is characterized in that, described fluid pump is arranged on and connects in the adapter.
7, high-efficiency coolant heat transmission system as claimed in claim 2 is characterized in that, the described company in the adapter also is provided with control valve, and described control valve links to each other with controller, is used to regulate working medium flow.
8, high-efficiency coolant heat transmission system as claimed in claim 1 is characterized in that, the liquid/solid critical-temperature of described working medium is below-150 degrees centigrade.
9, high-efficiency coolant heat transmission system as claimed in claim 8 is characterized in that, described working medium is freon.
10, high-efficiency coolant heat transmission system as claimed in claim 2 is characterized in that, the described company between adapter and the described cooler is provided with liquid-dividing head, will enter cooler behind the liquid refrigerant demultiplexing.
CNA2009100004779A 2009-01-16 2009-01-16 High-efficiency coolant heat transmission system Pending CN101476833A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102620349A (en) * 2011-01-31 2012-08-01 珠海格力电器股份有限公司 Base station air conditioner, control method thereof and communication base station with air conditioner
CN103363717A (en) * 2013-07-30 2013-10-23 新奥科技发展有限公司 Refrigerating system and operation method thereof
CN107086471A (en) * 2017-06-27 2017-08-22 青岛特来电新能源有限公司 Cooling device and box-type substation for box-type substation
CN107763779A (en) * 2017-11-29 2018-03-06 北京丰联奥睿科技有限公司 A kind of multi-freezing pipe air conditioning devaporizer
CN114383222A (en) * 2021-12-16 2022-04-22 青岛海尔空调器有限总公司 Air conditioner
CN114543389A (en) * 2022-02-23 2022-05-27 陈珂 Waste heat utilization system and method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102620349A (en) * 2011-01-31 2012-08-01 珠海格力电器股份有限公司 Base station air conditioner, control method thereof and communication base station with air conditioner
CN102620349B (en) * 2011-01-31 2014-07-09 珠海格力电器股份有限公司 Base station air conditioner, control method thereof and communication base station with air conditioner
CN103363717A (en) * 2013-07-30 2013-10-23 新奥科技发展有限公司 Refrigerating system and operation method thereof
CN107086471A (en) * 2017-06-27 2017-08-22 青岛特来电新能源有限公司 Cooling device and box-type substation for box-type substation
CN107086471B (en) * 2017-06-27 2023-10-27 青岛特来电新能源科技有限公司 Cooling equipment for box-type substation and box-type substation
CN107763779A (en) * 2017-11-29 2018-03-06 北京丰联奥睿科技有限公司 A kind of multi-freezing pipe air conditioning devaporizer
CN114383222A (en) * 2021-12-16 2022-04-22 青岛海尔空调器有限总公司 Air conditioner
CN114543389A (en) * 2022-02-23 2022-05-27 陈珂 Waste heat utilization system and method
CN114543389B (en) * 2022-02-23 2024-05-14 陈珂 Waste heat utilization system and method

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Open date: 20090708