Greenhouse effect of chlorofluorocarbons and other trace gases This workshop takes stock of this situation and of the problems encountered by the various actors involved in the replacement of CFCs in thermodynamical systems: evolutions of regulation, point of view of refrigerating fluid producers and of compressors and heat exchangers manufacturers, research studies on substitution fluids, recovery of CFCs and other refrigerating fluids, revival in the use of natural fluids (like ammonia), and use of new thermodynamical systems like compression/absorption (water/ammonia) cycles. These constraints led the users of refrigerating fluids to use substitution fluids and to develop new techniques of energy recovery and heat/coldness production. Atmospheric impacts of the use of CFCs (`ozone hole`) led the international community to adopt remedial measures which aim to prohibit the production of CFCs. Some chlorofluorocarbons ( CFCs) are well-adapted to coldness production by vapour compression and thus are widely used in the storage of agriculture-food products from the production to the domestic consumer but also in air-conditioning systems and heat pumps. Replacement of CFCs in thermodynamical systems Remplacement des CFC dans les systemes thermodynamiquesĮnergy Technology Data Exchange (ETDEWEB) This science research led to the implementation of international agreements that largely stopped the production of ODSs.
Since that time, the scientific connection between ozone losses and CFCs and other ozone depleting substances (ODSs) has been firmly established with laboratory measurements, atmospheric observations, and modeling research. Ozone depletion by chlorofluorocarbons ( CFCs) was first proposed by Molina and Rowland in their 1974 Nature paper. What would have happened to the ozone layer if chlorofluorocarbons ( CFCs) had not been regulated?