What are the commonly used low temperature refrigerants and related uses?

The refrigerant is the working substance in the refrigeration cycle of the refrigeration device. Its working principle is that the refrigerant absorbs the heat of the cooled substance in the evaporator and evaporates, and transfers the absorbed heat to the surrounding air or The water is cooled into a liquid and circulates back and forth to achieve refrigeration with the help of state changes. Commonly used ultra-low temperature refrigerant oil R13, R14, R508B, R23.

R-13 refrigerant

alias R13, Freon 13, F13, F-13, CFC13, CFC-13, trifluorochloromethane, The trade names are Freon 13, etc., the Chinese name is trifluorochloromethane, the English name is Chlorotrifluoromethane, and the chemical formula is CClF3. Since R-13 belongs to the CFC class of substances (the first 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 The initial installation of new refrigeration equipment or the addition of old equipment; China has stopped the production of R13 refrigerant in 2007 and the initial installation of new refrigeration and air-conditioning equipment.

The main purpose 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 Thermal shock testing machines), biochemical test chambers and other cryogenic equipment (including scientific research refrigeration, medical refrigeration, etc.) are more commonly used in the low temperature section of these cascade refrigeration systems. Trifluorochloromethane can also be used as a fire extinguishing agent.

R-508B (SUVA 95) environmentally friendly refrigerant

R-508B refrigerant, alias R508B, product names include SUVA 95, Genetron 508B, etc. 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 widely used in new refrigeration equipment (ultra-low temperature, Cryogenic) on the initial installation and re-added during the maintenance process. It meets the standards of the US environmental protection organization EPA, SNAP and UL, and meets the A1 safety level category of the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE) (this is the highest level and is harmless to humans).

The main purpose of R-508B is R-508B (SUVA 95) as a widely used ultra-low temperature refrigerant. Due to the good comprehensive performance of R-508B, it becomes a very effective and safe CFC-13( R13, R-13, Freon 13, Freon-13), R-503 and HFC-23 (R23, R-23, Freon 23, Freon-23) alternatives, mainly used in environmental test chambers/equipment (hot and cold Impact testing machines), freeze dryers/freeze dryers, ultra-low temperature refrigerators or freezers, blood bank refrigerators, biochemical test chambers and other cryogenic equipment (including scientific research refrigeration, medical refrigeration, etc.), are more commonly used in these cascade refrigeration systems Low temperature level. R508B refrigerating temperature can be reduced to -80℃ or even lower. It is a long-term substitute for R-13, R-503 and R-23 that meet industry standards. It is fully adapted to the working environment of R-503.

Ultra-low temperature refrigerant R14

R-14 refrigerant, alias R14, Freon 14, PFC-14, product name is Freon 14, etc., Chinese name Carbon tetrafluoride, perfluorocarbon, English name Carbon Tetrafluoride or Tetrafluoromethane, molecular formula CF4. R-14 belongs to the fc class of substances-it does not damage the ozone layer, but has a greenhouse effect; there are currently no restrictions on the production and sales of R14 refrigerant, as well as the initial installation of new refrigeration equipment and the addition of after-sales equipment.

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 ultra-low temperature with refrigerant Important component.

R-23 refrigerant

R-23 is a widely used ultra-low temperature refrigerant. Due to the good comprehensive performance of HFC-23, it becomes a A very effective and safe alternative to CFC-13 (R13, R-13, Freon 13, Freon-13) and R-503.

Main use: R-23 refrigerant, alias R23, Freon 23, F23, F-23, HFC23, HFC-23. Because 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 is also one of the mainstream environmentally friendly refrigerants.

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