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A composite refrigerant suitable for the temperature range of -45°C to 90°C

A refrigerant and temperature zone technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve problems such as pressure rise and affect the safety of cooling systems, achieve large latent heat of gasification, be conducive to miniaturization, and ensure safety. Effect

Active Publication Date: 2019-04-05
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the pressure in the refrigerant storage bottle rises rapidly, which affects the safety of the cooling system

Method used

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  • A composite refrigerant suitable for the temperature range of -45°C to 90°C
  • A composite refrigerant suitable for the temperature range of -45°C to 90°C
  • A composite refrigerant suitable for the temperature range of -45°C to 90°C

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) First open the first manual shut-off valve 7, the third manual shut-off valve 11, and the fourth manual shut-off valve 12, clean the steel container 5 and the mixing container 2 twice with pure water, and then clean it with absolute alcohol 2 times. After cleaning, empty the alcohol, close the first manual shut-off valve 7, the third manual shut-off valve 11 and the fourth manual shut-off valve 12.

[0046] (2) Open the first manual shut-off valve 7, add dichloromethane and fluorodichloroethane into the mixing container 2 in a ratio of 4:1 by weight, close the first manual shut-off valve 7, shake fully for 1 min, and obtain a mixed liquid.

[0047] (3) Open the second manual shut-off valve 9, use the vacuum unit 4 to vacuum pump the steel container 5, and remove the gas in the steel container 5. When the vacuum degree is stable below 100Pa, close the second hand after the vacuum is finished. Move shut-off valve 9, vacuum unit 4 stops.

[0048](4) Connect the seco...

Embodiment 2

[0053] (1) First open the first manual shut-off valve 7, the third manual shut-off valve 11, and the fourth manual shut-off valve 12, clean the steel container 5 and the mixing container 2 twice with pure water, and then clean it with absolute alcohol 2 times. After cleaning, empty the alcohol, close the first manual shut-off valve 7, the third manual shut-off valve 11 and the fourth manual shut-off valve 12.

[0054] (2) Open the first manual shut-off valve 7, add dichloromethane and fluorodichloroethane into the mixing container 2 in a ratio of 3:1 by weight, close the first manual shut-off valve 7, shake fully for 1 min, and obtain a mixed liquid.

[0055] (3) Open the second manual shut-off valve 9, use the vacuum unit 4 to vacuum pump the steel container 5, and remove the gas in the steel container 5. When the vacuum degree is stable below 100Pa, close the second hand after the vacuum is finished. Move shut-off valve 9, vacuum unit 4 stops.

[0056] (4) Connect the sec...

Embodiment 3

[0061] (1) First open the first manual shut-off valve 7, the third manual shut-off valve 11, and the fourth manual shut-off valve 12, clean the steel container 5 and the mixing container 2 twice with pure water, and then clean it with absolute alcohol 2 times. After cleaning, empty the alcohol, close the first manual shut-off valve 7, the third manual shut-off valve 11 and the fourth manual shut-off valve 12.

[0062] (2) Open the first manual shut-off valve 7, add dichloromethane and fluorodichloroethane into the mixing container 2 in a ratio of 5:1 by weight, close the first manual shut-off valve 7, shake fully for 1 min, and obtain a mixed liquid.

[0063] (3) Open the second manual shut-off valve 9, use the vacuum unit 4 to vacuum pump the steel container 5, and remove the gas in the steel container 5. When the vacuum degree is stable below 100Pa, close the second hand after the vacuum is finished. Move shut-off valve 9, vacuum unit 4 stops.

[0064] (4) Connect the sec...

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Abstract

The invention discloses a compound refrigerant applicable to a temperature zone of subzero 45 to 90 DEG C, and belongs to the field of refrigeration. The compound refrigerant has the advantages of being low-toxicity, incombustible and inexplosive, and is safe and reliable to use. The compound refrigerant has the pressure which is not less than 0.7MPa at the low temperature of subzero 45 DEG C andthe pressure which is not more than 4.0MPa at the high temperature of 90 DEG C, and can be used for guaranteeing the starting pressure of an open throttling refrigeration system at the low temperatureof subzero 45 DEG C; meanwhile, the refrigerant still has higher gasification latent heat at the high temperature of 90 DEG C. When the compound refrigerant is used for the open throttling refrigeration system, certain pressure can be maintained on the self; the refrigerant is ensured to flow to a cooled component; the additional pressurization and a pipeline are not needed; the system is simpleand reliable. The compound refrigerant can be ensured to work normally in the temperature zone of subzero 45 to 90 DEG C; meanwhile, the refrigerating output of a unit of the compound refrigerant is large and the miniaturization and the light weight of an open throttling refrigeration system are facilitated.

Description

technical field [0001] The invention relates to a composite refrigerant suitable for a temperature range of -45°C to 90°C, in particular to a storage type open throttling cooling system applicable to a wide temperature range of -45°C to 90°C The invention relates to a compound refrigerant, which belongs to the field of refrigeration. Background technique [0002] With the development of hypersonic aircraft and the increase of Mach number, the thermal environment of the aircraft is getting worse. Although the hypersonic vehicle has adopted necessary passive thermal protection measures, the temperature inside the vehicle cabin has exceeded 80°C for a long time, even as high as 90°C, and the operating temperature of the payload and electronic components in the cabin cannot be guaranteed. Many key parts, such as the infrared detection window and the rudder shaft transmission part, are affected by high-temperature external heat flow, making it difficult to work normally, and eve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/04
CPCC09K5/04C09K5/044C09K2205/122
Inventor 张文瑞于锟锟杨祺陈正刚刘宁
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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