13-二氧化碳制冷技术探究.pdf

2016 年第九届全国制冷空调新技术研讨会论文集 CO 制冷技术探究 2 1 康方圆 申江 (天津商业大学 791860838@) 摘 要：为了预防新的合成制冷剂可能产生的未来环境问题，制冷机工质替代的一个重要趋势是尽量考虑 使用天然制冷剂。二氧化碳作为制冷空调环保（GWP=1）的天然制冷剂之一，在制冷行业广泛使用CO 做制 2 冷剂，有利于环境的改善，且不破坏臭氧层。当二氧化碳由固态转变为气态时，会吸收大量的热，从而使 周围的空气温度瞬间下降而达到降温的目的。根据国内外关于二氧化碳制冷剂及其制冷循环系统的研究资 料，本文对二氧化碳制冷剂的应用现状进行了综述，并展望了二氧化碳制冷的发展前景。 关键词：CO 制冷剂；节能；亚临界制冷循环；跨临界制冷循环；复叠制冷循环 2 The Development of CO2 Refrigeration Technology Kang Fang-Yuan1 Shen Jiang2 (Engineering Research Center of Refrigeration Technology,Ministry of Education, Tianjin University of Commerce,Tianjin,300134) Abstract : In order to prevent new synthetic refrigerants from generating future environmental issues potentially, alternative refrigerator working medium is an important trend to consider the use of natural refrigerants as far as possible.CO , as one of the natural and environmentally-friendly(GWP=1) refrigerants in refrigeration and air 2 conditioning . Using CO2 as refrigerant widely in refrigeration industry is beneficial to improvement of environment, and also does not destroy the ozone layer. When CO2 turns from solid state into gaseous, it absorbs a large amount of heat,so the temperature of the surrounding air transient decline and achieve the purpose of cooling. According to domestic and foreign research data about CO2 refrigerant and refrigeration cycle system , this paper summarizes the application status of CO2 refrigerant, and looks forward to the development