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Air supplying and enthalpy increasing indirect refrigerating system for train air conditioner

A technology for supplementing air, increasing enthalpy, and refrigeration system. It is applied in refrigerators, refrigeration components, refrigeration and liquefaction. It can solve the problems of high GWP value and inappropriate long-term replacement of sensible heat of refrigerants, so as to reduce hazards and improve service life. , the effect of improving stability

Pending Publication Date: 2018-02-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The GWP values ​​of other alternative refrigerants except R32 are relatively high, and it is not suitable as a long-term alternative refrigerant for sensible heat

Method used

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  • Air supplying and enthalpy increasing indirect refrigerating system for train air conditioner
  • Air supplying and enthalpy increasing indirect refrigerating system for train air conditioner
  • Air supplying and enthalpy increasing indirect refrigerating system for train air conditioner

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 As shown, an air-supplement enthalpy-increasing indirect refrigeration system for train air-conditioning includes air-supplement enthalpy-increasing system 1, air-supplement enthalpy-increasing system 2 and a set of refrigerant refrigeration system.

[0030] Such as Figure 2 to Figure 4 As shown, the air supplement enthalpy increasing system one includes a supplement air enthalpy increasing compressor 101, a first condenser 102, a first throttle valve 103, a first flash evaporator 104, a first solenoid valve 105, a second throttling valve 106, the first plate heat exchanger 107; the second air supplement enthalpy increasing system includes a second air supplement enthalpy increasing compressor 201, a second condenser 202, a third throttle valve 203, a second flash evaporator 204, The second solenoid valve 205, the fourth throttle valve 206, the second plate heat exchanger 207; the brine refrigeration system includes a water pump 301, a third solenoid ...

Embodiment 2

[0035] Such as Figure 5As mentioned above, the main difference between this embodiment and Embodiment 1 is that: the brine in the brine refrigeration system flows through the pipelines at the same time through two plate heat exchangers arranged in parallel to exchange heat with the refrigerant. That is to say, the first plate heat exchanger 107 and the second plate heat exchanger 207 of the air supply enthalpy increasing system 1 and the air supply increasing enthalpy system 2 are arranged in parallel, and the brine refrigerant in the brine refrigeration system is in the circulation process Heat exchange is achieved by simultaneously flowing through the first plate heat exchanger 107 , the second plate heat exchanger 207 , and the refrigerant in the air supplement enthalpy increasing system 1 and the air supplement enthalpy increasing system 2 .

[0036] Normally, we can judge the performance change and operating characteristics of the refrigeration system during application ...

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Abstract

The invention discloses an air supplying and enthalpy increasing indirect refrigerating system for a train air conditioner. The air supplying and enthalpy increasing indirect refrigerating system comprises two air supplying and enthalpy increasing systems and a secondary refrigerant refrigerating system; each air supplying and enthalpy increasing system comprises an air supplying and enthalpy increasing compressor, a condenser, two throttling valves, a flash evaporator, an electromagnetic valve and a plate heat exchanger; and the secondary refrigerant refrigerating system comprises a water pump, two indoor-side heat exchangers connected in parallel, two electromagnetic valves connected to the two ends of any one indoor-side heat exchanger and a water tank, wherein the water pump, the two indoor-side heat exchangers connected in parallel, the water tank and the two plate heat exchangers are connected through pipelines to form a secondary refrigerant circulating loop, and a secondary refrigerant achieves heat exchange with refrigerants in the air supplying and enthalpy increasing systems in the two plate heat exchangers. According to the air supplying and enthalpy increasing indirectrefrigerating system for the train air conditioner, the exhaust temperature of the train air conditioner R32 is lowered, and therefore the refrigerant R32 with the micro flammability does not flow through a compartment. Compared with a direct refrigerating system, the air supplying and enthalpy increasing indirect refrigerating system has the advantages that the exhaust temperature is lowered by10 DEG C, and the energy efficiency ratio is only decreased by 0.02.

Description

technical field [0001] The patent of the present invention relates to a train air-conditioning system, in particular to an indirect refrigeration system capable of reducing the outlet temperature of the compressor and the flammability risk of the refrigerant. Background technique [0002] Destruction of the ozone layer and global warming are two major environmental issues facing society today. The international community has successively reached a series of international conventions such as the Montreal Protocol and the Kyoto Protocol. my country's refrigeration and air-conditioning industry is implementing accelerated phase-out of HCFCs in accordance with the provisions of the Montreal Protocol. As a part of the refrigeration and air-conditioning industry, train air-conditioning is very different from conventional residential or building air-conditioning, and the industry management requirements are very high. Currently, R22 and R407C are the main refrigerants used in trai...

Claims

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Application Information

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IPC IPC(8): F25B7/00F25B9/00B61D27/00
CPCF25B7/00F25B9/002B61D27/0072F25B2500/12F25B2400/061F25B2500/24Y02T30/00
Inventor 巫江虹李冲姜峰
Owner SOUTH CHINA UNIV OF TECH
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