二氧化碳低温制冷特性与跨临界应用研究  

CO_2 cryogenic cooling characteristics and transcritical applications

作　　者：王哲[1] 龚毅[1] 吴学红[1] 侯锋[1] 李亚强[1] 

机构地区：[1]郑州轻工业学院机电工程学院,制冷及低温工程研究所,郑州450002

出　　处：《低温与超导》2012年第6期58-63,共6页Cryogenics and Superconductivity

基　　金：国家十一五科技支撑计划项目(2006BAJ01A10-07)

摘　　要：在工业制冷、食品冷冻冷藏和室内外热舒适调节等方面,CO2作为一种自然环保制冷剂愈来愈受到人们的青睐。近年来,CO2制冷剂的应用范围由原来的热泵热水器逐步扩大,从小型制冷装置上的饮料零售机、制冰机到大型超市的带热回收装置的并联机组等;而用于CO2工质的制冷循环也由单一的复叠、二次载冷系统扩展为跨临界、跨临界增压等系统。文中阐述了CO2在低温下的热力学性质与特性分析,以及在跨临界制冷循环中的应用和提高系统性能的方法。CO2 has emerged as one of the most promising and preferred refrigerants for low temperature refrigeration systems in the food and refrigeration industry.In recent years,the widespread use of CO2 refrigerant,particularly in supermarkets,has proved commercially attractive worldwide.Some of the designs that are most commonly used in industry include cascade,transcritical and transcritical booster.This paper presents the holistic view of the fundamentals and application of CO2 refrigerant in low temperature refrigeration systems,along with some discussion on its benign properties,thermodynamic analysis,the challenges,the need for fundamental research and design of novel systems for its continuing dominance in the refrigeration industry.

关 键 词：CO2 制冷循环 跨临界 超市 最优压力 

分 类 号：TB612[一般工业技术—制冷工程]