应上海制冷学会的邀请,来上海交流有关CFC与氨制冷机方面的问题,深感荣幸。当年提出CFC问题时,日本冷藏业和化学工业领域所使用的制冷工质80%是HCFC(R22)。及至对氟利昂的限制从CFC波及到HCFC之后,重新评价氨工质的呼声才日渐高涨。为此,日本冷冻协会于1990年8月成立了 At the invitation of Shanghai Institute of Refrigeration, I am deeply honored to come to Shanghai to exchange questions on CFC and ammonia refrigerators. When the CFC issue was raised in the same year, 80% of the refrigerants in Japan’s refrigeration and chemical industries were HCFCs (R22). As the restrictions on freon increased from CFC to HCFC, the voice of ammonia re-evaluation was only rising. To this end, Japan Frozen Association was established in August 1990