期刊
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
卷 32, 期 5, 页码 1077-1084出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2008.09.008
关键词
Refrigeration system; Compression system; Cascade system; Nitrous oxide; Carbon dioxide; Heating; Chilling; Optimization; Pressure
In this study, a natural refrigerant based cascaded system, with nitrous oxide as the low temperature fluid and carbon dioxide as the high temperature fluid, is analyzed for simultaneous cooling and heating applications. Effects of significant design and operating parameters on system performance are studied. Optimization of intermediate pressure for maximum COP for various design and operating parameters are presented as well. Results show that use of internal heat exchanger has marginal influence on system performance. Due to similar thermodynamic properties of nitrous oxide and carbon dioxide, the optimized intermediate temperature turns out to be independent of the performance of gas cooler and evaporator for a given operating condition. Due to the same reason, N2O as low temperature fluid and CO2 as high temperature fluid in a cascade arrangement exhibit similar behavioural trends in a system where the fluids are swapped. (C) 2008 Elsevier Ltd and IIR. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据