What are the commonly used refrigerants for ultra low temperature refrigerators

2017-11-25 16:22:15
What are the commonly used refrigerants for ultra low temperature refrigerators
The refrigerant of ultra-low temperature refrigerators is different from ordinary household refrigerator refrigerants. Because different temperature ultra-low temperature refrigerators require different refrigerants, the refrigerant is also part of the technology. Therefore, the refrigerant formula is confidential information of the ultra-low temperature refrigerator manufacturers.

Ultra-low temperature refrigerators are mainly used for low-temperature experiments and storage of special materials such as seafood preservation, biological research, metal processing, hospitals, epidemic prevention systems and military industry, scientific research, medical supplies, biological products, ocean products, electronic components, and chemical materials. The common low temperature refrigerator temperature is divided into such as -40℃, -60℃, -86℃, -150℃ and so on.

Common refrigerants and applicable models are as follows:

1. Ultra-low temperature refrigerant R14

Main application: As a special ultra-low temperature refrigerant, R-14 is mainly used in cryogenic equipment requiring very low temperature (including scientific research refrigeration, medical refrigeration, etc.). R14 is also an important component of ultra-low temperature coordination refrigerant.

2. R-13 refrigerant

Main application of R-13: As a widely used ultra-low temperature refrigerant, R-13 is mainly used in ultra-low temperature refrigerators or freezers, blood bank refrigerators, freeze dryers/freeze dryers, environmental test chambers/equipment (cold and heat shock test machines), biochemical In cryogenic equipment such as test chambers (including scientific research refrigeration, medical refrigeration, etc.), it is often used in the low temperature section of these cascade refrigeration systems. Trifluorochloromethane can also be used as a fire extinguishing agent. [Because R-13 is a CFC substance (Restricted ODS substance Class I Ozone-depleting Substances)-it destroys the ozone layer and has a greenhouse effect. Therefore, in developed countries and some developing countries, it has stopped installing new refrigeration equipment The first installation on the previous device or the addition on the old device]

3. R-23 ultra-low temperature refrigerant

Main use: R-23 refrigerant, alias R23, Freon 23, F23, F-23, HFC23, HFC-23. As R-23 belongs to HFC substances (non-ODS substances Ozone-depleting Substances)-it does not destroy the ozone layer at all. It is an environmentally friendly refrigerant recognized and recommended by most countries in the world, and it is also one of the mainstream environmentally friendly refrigerants.

4. R-508B (SUVA 95) environmentally friendly refrigerant

 R-508B is an environmentally friendly azeotropic refrigerant that does not contain CFC and HCFC substances that destroy the ozone layer. It is currently recognized and recommended by most countries in the world as a mainstream ultra-low temperature environmentally friendly refrigerant. It is mainly used in environmental test chambers/equipment ( Thermal shock testing machine), freeze dryer/freeze dryer, ultra-low temperature refrigerator or freezer, blood bank refrigerator, biochemical test chamber and other cryogenic equipment (including scientific research refrigeration, medical refrigeration, etc.), they are more commonly used in these cascade refrigeration Low temperature level of the system. R508B refrigerating temperature can be reduced to -80℃ or even lower. It is a long-term replacement of R-13, R-503 and R-23 that meet the industry standards. It is fully adapted to the working environment of R-503.