摘要
为尽快实现制冷空调中CO2 对传统工质的替代,克服CO2 跨临界循环系统效率较低的缺点,在基本制冷循环的基础上,可以通过应用内部热交换器、闪蒸器、混合器、分离器、膨胀机等部件,采用各种系统循环方式以提高CO2 跨临界循环的系统效率并满足不同需要,从而使之达到与传统工质相竞争的比较优势。本文对三种单级循环、五种双级循环和四种联合循环的流程及各种循环提高系统效率的原理进行了综述和分析。
To quicken the steps of refrigerants substitution with such natural refrigerants as CO 2, some modes of CO 2 transcritical cycles are introduced to improve the system coefficient of performance which adopt such components as internal heat exchanger, flash vessel, mixer unit, split unit and expander. Three single-stage cycles, five two-stage cycles and four combined cycles are investigated and analyzed in the paper.
出处
《制冷与空调》
2005年第2期34-38,共5页
Refrigeration and Air-Conditioning
基金
高等学校博士学科专项科研基金资助 (D0 2 0 0 10 5 )。
