Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
A novel transcritical CO2 refrigeration cycle with two ejectors | |
Cen, Jiwen; Liu, Pei; Jiang, Fangming | |
2012-12-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID |
卷号 | 35期号:8页码:2233-2239 |
摘要 | In recent years, CO2 is being revisited as a fully environmentally friendly and safe refrigerant. However, basic CO2 transcritical refrigeration cycle suffers from large expansion loss due to high pressure difference between gas cooler and evaporator. Then, it is crucial to find effective and economic way to reduce the expansion loss. Here, a novel cycle with two ejectors is proposed for the first time. Compared with conventional ejector-expansion CO2 cycle with only one ejector, this novel cycle with two ejectors is able to recover more expansion loss, thus improving the system performance further. A computational model is designed to simulate the double ejector CO2 cycle. Simulation results show its high system COP. Effects of parameters, such as ejector nozzle efficiency, gas cooler pressure, entrainment ratios of the two ejectors, gas cooler outlet temperature, on the cycle performance are also analyzed by using the computational model. (C) 2012 Elsevier Ltd and IIR. All rights reserved. |
文章类型 | Article |
关键词 | Carbon Dioxide R744 Transcritical Cycle Ejectors Modeling Cop |
WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
DOI | 10.1016/j.ijrefrig.2012.07.001 |
研究领域[WOS] | Thermodynamics ; Engineering |
关键词[WOS] | SYSTEM ; OPTIMIZATION ; EXPANDER |
收录类别 | SCI |
语种 | 英语 |
WOS类目 | Thermodynamics ; Engineering, Mechanical |
WOS记录号 | WOS:000313145600017 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.giec.ac.cn/handle/344007/10174 |
专题 | 中国科学院广州能源研究所 |
作者单位 | Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | Cen, Jiwen,Liu, Pei,Jiang, Fangming. A novel transcritical CO2 refrigeration cycle with two ejectors[J]. INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID,2012,35(8):2233-2239. |
APA | Cen, Jiwen,Liu, Pei,&Jiang, Fangming.(2012).A novel transcritical CO2 refrigeration cycle with two ejectors.INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID,35(8),2233-2239. |
MLA | Cen, Jiwen,et al."A novel transcritical CO2 refrigeration cycle with two ejectors".INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID 35.8(2012):2233-2239. |
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