上海通用机械总公司于8月21日邀请上海市制冷学会、上海市冷冻空调机械工业协会及有关科研院校等单位的专家;召开《CFC控制、替代工作研讨会》。专家们认为:根据保护世界环境的《蒙特利尔协定》作为制冷工质的氟利昂将逐年减少使用,直至停止使用。作为制冷工质的氟利昂,尤其是R11和R12、R13,排放到大气层后会上升至离地球表面11公里以上的臭氧层,从而破坏臭氧层,使之形成空洞(尤其在低温的南北极上空),造成太阳对地球 Shanghai General Machinery Corporation on August 21 invited Shanghai Institute of Refrigeration, Shanghai Refrigeration and Air Conditioning Machinery Industry Association and relevant scientific research institutions and other units of experts; held “CFC control, alternative work seminar.” Experts believe that freon, which is a refrigerant that is based on the Montreal Protocol for the Protection of the World Environment, will be used less frequently until it ceases to be used. Freons, especially R11 and R12, and R13, which are refrigerant refrigerants, rise to the ozone layer more than 11 kilometers away from the earth’s surface after they have been released into the atmosphere, thus destroying the ozone layer and causing voids (especially over the cold polar and northern polar regions) The sun is on the earth