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CO2 steam-solid particle refrigerating system

A solid particle, refrigeration system technology, applied in the system field of the refrigeration technology field, can solve the problems such as the minimum evaporation temperature cannot be lower than the triple point, the cooling temperature is reduced, etc., achieves effective transportation, improves energy efficiency ratio, and is environmentally friendly. Effect

Inactive Publication Date: 2007-06-13
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to target CO 2 The minimum evaporation temperature cannot be lower than the triple point, providing a CO 2 The steam-solid particle refrigeration system makes it use the carbon dioxide vapor-solid particle two-phase mixture for sublimation refrigeration, which reduces the cooling temperature and realizes the effective transportation of solid refrigerant

Method used

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  • CO2 steam-solid particle refrigerating system

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Embodiment Construction

[0013] As shown in Figure 1, the present invention includes: a compressor 1, a cooler 2, a throttle valve 3, a gas-liquid separator 4, a high-pressure flow regulating valve 5, an adjustable nozzle 6, a sublimator 7, a low-pressure flow regulating valve 8, temperature sensor9. The connection method is: the outlet of compressor 1 is connected to the inlet of cooler 2, the outlet of cooler 2 is connected to the inlet of throttle valve 3, the outlet of throttle valve 3 is connected to the inlet of gas-liquid separator 4, and gas-liquid separator 4 has two outlets , the gas phase outlet at the top of the gas-liquid separator 4 is connected to the inlet of the high-pressure flow regulating valve 5, the liquid outlet at the bottom of the gas-liquid separator 4 is connected to the main inlet of the adjustable nozzle 6, and the outlet of the high-pressure flow regulating valve 5 is connected to the outlet of the low-pressure flow regulating valve 8 It is connected with the middle inlet...

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Abstract

A CO2 steam-solid grain refrigeration system, which contains refrigerant CO2, compressor, condenser, throttle valve, gas-liquid separator, high pressure flow adjusting valve, adjustable nozzle, sublimator, temperature sensor whose signal controlling adjustable nozzle. Said invention realizes the solid refrigerant transmission in the system, reduces refrigerated temperature, in favor of raises system performance and has fine environment protection.

Description

technical field [0001] The present invention relates to a system in the technical field of refrigeration, in particular to a CO 2 Vapor-solid particle refrigeration systems. Background technique [0002] CO 2 It is a naturally occurring substance with stable properties and no damage to the environment, so it can be used as a refrigerant in compression refrigeration systems. In existing compression systems, CO 2 It flows in the refrigeration system in the form of gas, liquid or gas-liquid mixture. Due to CO 2 The temperature of the triple point is -56.8°C, below the temperature of the triple point will form solid CO 2 , that is, dry ice, so the above uses CO 2 The minimum evaporation temperature of the refrigeration system as a refrigerant must be higher than the triple point temperature of -56.8°C, generally not lower than -55°C. If lower temperatures are required, solid CO must be addressed 2 Refrigeration problem. [0003] A public literature search of the prior a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B9/00F25D3/12
CPCF25B9/008F25B2309/061F25B2400/23F25B2600/2507
Inventor 黄冬平丁国良
Owner SHANGHAI JIAOTONG UNIV