616 自然系冷媒CO_2およびアンモニアの冷凍機への導入効果(自然作動媒体利用圧縮サイクル)(OS.8 自然作動媒体と冷凍空調技術)

概要

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This paper presents the effects of application of natural working fluids, CO_2 and ammonia, in refrigeration systems. Although one promising alternative to HCFCs are HFCs, there high global worming potential will be subject to regulation in the very near future. Thus development and application of refrigeration and air conditioning system using natural refrigerants is an urgent issue. This paper reports on a transcritical CO_2 cycle for air conditioning using an oil injection screw compressor with a cooling capacity of 141kW, and a semi-hermetic ammonia screw compressor developed to enhance the safety of the ammonia system. By doing this, the best refrigerant can be chosen for the suitable application to realize maximum performance.
一般社団法人日本機械学会の論文
2001-03-09