A large number of air-conditioning products occasionally have sporadic accidents during widespread use, regardless of past CFCs (such as CFC-11, CFC-12), HCFCs (such as HCFC-22, HCFC-141b, HCFC-142b) and ammonia. , or the current HFCs (such as HFC-134a,Refrigerant R410A, Refrigerant Gas R404A,Dupont R407c, Juhua Refrigerant R507A etc.) products, accidents occurred during use and maintenance. However, after investigation and analysis, these accidents are almost always caused by illegal use or illegal operation. It is extremely rare that the accident is caused by the refrigerant itself. Recently, a small number of media released a number of one-sided reports on new alternative refrigerants, using words such as "NH3 equipment explosion", "HFC-32 air conditioning easy to explode", "there are countless tragedies" as the headline alarmist to attract readers' attention, these remarks It is extremely irresponsible, misleading to the society and the public, and is not in line with the truth.
From a scientific point of view, it can be seen from the professional research and analysis of some accidents in the past that these accidents are almost always caused by violations of the operators during installation, maintenance and operation, such as illegal use of flammable or The combustion-supporting gas (such as acetylene and oxygen) is subjected to pressure test, leak detection, etc., and the installation and use conditions are not in accordance with the provisions of the product specification or the flammable and explosive refrigerant is privately charged. It can be said that the use and operation in strict accordance with the regulations, standards and product requirements are the taboos in the installation and use of various types of refrigeration and air-conditioning equipment. The occurrence of these accidents is not directly related to the refrigerant used.