节能2019，Vol.38Issue(1)：39-42,4.DOI:10.3969/j.issn.1004-7948.2019.01.016
以R508B与R23为低温工质的复叠循环理论模拟
Theoretical simulation of cascade cycle with R508B and R23 as low temperature working fluids
向鹏程 1申江1
作者信息
- 1. 天津商业大学天津市制冷技术重点实验室,天津 300134
- 折叠
摘要
Abstract
Under the circumstance of ultra-low temperature in medical, the theoretical cycle performance of the cascade cycle with R404A as the high temperature cycle working fluid, R508B or R23 as the low temperature cycle working fluid was studied. Through calculation, the influence of high temperature condensing temperature, high temperature evaporation temperature and the temperature difference of condensing evaporator on system COP is simulated. It is concluded that the COP of the cascade system decreases with the increase of the condensing temperature of the high temperature cycle. With the increase of the evaporation temperature of the high temperature cycle, the COP of the cascade system first rises and then decreases. With the temperature difference of condensing evaporator rises, the COP of the cascade system goes down gradually. In general, R508B should be given priority as a low-temperature refrigerant.关键词
复叠循环/R508B/R23/理论计算Key words
cascade cycle/R508B/R23/theoretical simulation分类
建筑与水利引用本文复制引用
向鹏程,申江..以R508B与R23为低温工质的复叠循环理论模拟[J].节能,2019,38(1):39-42,4.
