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近年来,由于氟利昂可能对大气层中臭氧层产生的有害影响,关于氟利昂的使用问题,引起了广泛的关注。臭氧层对保证地球上生命的存在,起着重要的作用,因为它能吸收大部分对人类、牲畜和植物有害的太阳射线中的紫外线(波长240～329nm)。在本世纪20年代出现的无毒、不燃、无爆炸危险及没有气味的氟利昂,长期以来一直被认为是无害的。氟利昂在工业制冷装置、空调系统等得到了广泛的应用。一些国家还建成了氟利昂(R12、R22、R502)泵循环冷却系统的冷库。有的专家甚至提出最好完全摆脱有毒和有爆炸危险的氨,而完全用氟利昂来代替。
In recent years, due to the possible detrimental effect of freons on the ozone layer in the atmosphere, there has been widespread concern about the use of freons. The ozone layer plays an important role in ensuring the existence of life on Earth because it absorbs most of the ultraviolet rays (wavelengths of 240 to 329 nm) in solar rays that are harmful to humans, livestock and plants. The non-toxic, non-flammable, non-explosive dangerous and odorless Freon that emerged in the 1920s has long been considered innocuous. Freon in industrial refrigeration installations, air conditioning systems have been widely used. Some countries have also built Freon (R12, R22, R502) pump circulation cooling system of cold storage. Some experts even proposed that ammonia should be replaced completely with freon, which is best removed completely from toxic and explosive hazards.