Mixed working medium low-temperature refrigerating cycle system driving ejector through waste heat

A technology of mixing working fluid and ejector, which is used in machines using waste heat, machines using refrigerant evaporation, refrigerators, etc., can solve the problems of many components and complicated processes, and achieve the effect of reducing irreversible losses and system energy saving. Significantly reduce calorie consumption

Active Publication Date: 2014-09-03
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An ejector low-temperature refrigerator invented by patent 200910064001.1 can use low-grade energy to obtain low-temperature cooling capacity. The s

Method used

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  • Mixed working medium low-temperature refrigerating cycle system driving ejector through waste heat
  • Mixed working medium low-temperature refrigerating cycle system driving ejector through waste heat
  • Mixed working medium low-temperature refrigerating cycle system driving ejector through waste heat

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] figure 1 It is an embodiment of the first technical scheme of the mixed working medium low-temperature refrigeration cycle system utilizing waste heat to drive the ejector of the present invention; figure 1 As shown, the mixed working medium low-temperature refrigeration cycle system using waste heat to drive the ejector in this embodiment includes a drive pump 110, a steam generator 120, an ejector 130, a condenser 140, a gas-liquid separator 150, a first regenerative heat exchanger 160, second regenerative heat exchanger 170, first throttle valve 180 and evaporator 190; the steam steam generator is driven by industrial waste heat, and the mixed working fluid is heated therein;

[0035]The outlet of the driving pump 110 is connected to the inlet of the steam generator 120, the outlet of the steam generator 120 is connected to the high-pressure inlet of the ejector 130, the outlet of the ejector 130 is connected to the inlet of the condenser 140, and the outlet of the e...

Embodiment 2

[0039] figure 2 It is another embodiment of the first technical solution of the present invention; the difference between this embodiment and Embodiment 1 is that it also includes a third recuperation heat exchanger 112, and the high-pressure inlet of the third recuperation heat exchanger 112 It is connected with the outlet of the driving pump 110, the high pressure outlet of the third recuperator 112 is connected with the inlet of the steam generator 120; the low pressure inlet of the third recuperator 112 is connected with the ejector 130 The outlet is connected, and the low-pressure outlet of the third heat recovery heat exchanger 112 is connected with the inlet of the condenser 140 .

[0040] The rest of this embodiment is the same as that of Embodiment 1; compared with Embodiment 1, this embodiment 2 adds a third regenerative heat exchanger 112, and utilizes the heat of the ejector 130 outlet working fluid to heat the outlet of the booster drive pump 110 fluid, improvin...

Embodiment 3

[0042] image 3 It is another embodiment of the first technical solution of the present invention; this embodiment 3 adds a fourth regenerative heat exchanger 113 on the basis of embodiment 2, and the high-pressure inlet of the fourth regenerative heat exchanger 113 is connected to the The outlet of the condenser 140 is connected, the high-pressure outlet of the fourth recuperator 113 is connected to the gas inlet of the gas-liquid separator 150; the low-pressure inlet of the fourth recuperator 113 is connected to the first The low pressure outlet of the regenerative heat exchanger 160 is connected, and the low pressure outlet of the fourth regenerative heat exchanger 113 is connected with the low pressure inlet of the ejector 130 .

[0043] The rest of this embodiment is the same as that of Embodiment 2; compared with Embodiment 2, this Embodiment 3 adds a fourth regenerative heat exchanger 113, and utilizes the working fluid at the low-pressure outlet of the first regenerato...

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Abstract

A mixed working medium low-temperature refrigerating cycle system driving an ejector through waste heat comprises a drive pump, a steam generator, the ejector, a condenser, a gas-liquid separator, a first returning heat exchanger, a second returning heat exchanger, a first throttling valve and an evaporator. A mixing working medium liquid-phase component is pressurized through the pump and then enters the steam generator to become high-temperature and high-pressure gas, and the high-temperature and high-pressure gas enters the ejector to eject the mixing working medium throttling refrigerating fluid; the gas enters the condenser to be cooled into gas-liquid fluid, the gas-liquid fluid is separated, a gas-phase component enters the returning heat exchanger throttling valve, the low temperature is generated, the heat of the gas-phase component is absorbed by the evaporator , the gas-phase component enters the returning heat exchangers, the temperature is reset, and then the gas-phase component is ejected by the ejector. The liquid-phase working medium is divided into two parts, one part is throttled and enters the returning heat exchangers to provide precooling, the working medium and the gas-phase working medium are mixed to be ejected by the ejector, and the other part enters the pump to be pressurized to serve as ejecting fluid to finish circulation. According to the mixed working medium low-temperature refrigerating cycle system, the high-temperature and high-pressure steam generated by waste heat is completely utilized for driving the ejector to eject the throttled working medium, and therefore efficient, energy-saving and low-temperature refrigerating can be achieved.

Description

technical field [0001] The invention relates to the field of mixed working medium throttling refrigeration, in particular to a mixed working medium low-temperature refrigeration cycle system that utilizes waste heat to drive an ejector. Background technique [0002] The ejector is a fluid device that uses the turbulent diffusion of the jet to make two fluids of different pressures mix with each other and exchange energy. The ejector refrigerator using the ejector is a refrigerator driven by low-grade energy, which is clean and environmentally friendly. Compared with the traditional vapor compression refrigeration, the ejector refrigeration does not require an electric drive compressor, and can use waste heat and solar energy to save energy. The effect is remarkable. Compared with absorption refrigeration, which is also driven by heat energy, ejector refrigeration has a simple structure, lower refrigeration temperature, and higher low-grade energy utilization efficiency. ...

Claims

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Application Information

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IPC IPC(8): F25B27/02F25B19/02F25B41/00
CPCY02A30/274
Inventor 公茂琼程逵炜邹鑫吴剑峰
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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