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【关键词】 氨制冷系统; 氟制冷系统; 选择和决策; 【英文论文关键词】 Ammonia refrigeration system Freon refrigeration system Selection and decision; 【论文摘要】 蒸汽压缩式制冷系统按采用的工质不同,可分为氨制冷系统、氟制冷系统。由于采用的工质不同,制冷系统的特性、构造及应用范围亦不同。此文试图对氨制冷系统与氟制冷系统的异同进行分析比较,以利制冷系统的选择和决策。 【英文论文摘要】 Steam compressed refrigeration system may be divided ammonia refrigeration system and freon refrigeration system according to used differant refrigerants. Refrigeration systems property, construction and application extent are differant because of being used differant refrigerants.This essay tries to compare the difference between Ammonia refrigeration system and freon refrigeration system to help to select and decide suitable refrigeration system.