Performance evaluation of a combined ejector-vapor compression cycle

Jia Yan, Wenjian Cai, Lei Zhao, Yanzhong Li and Chen Lin

Renewable Energy, 2013, vol. 55, issue C, 331-337

Abstract: This paper describes the development of a combined ejector-vapor compression cycle (EVCC) that uses working fluid R134a and air-cooled condensers for both sub-cycles. A large amount of experiments have been conducted to test the influence of the evaporating, generating and condensing temperatures of the ejector sub-cycle (ESC) on the performances of EVCC. The test results show that (1) the performance of the combined cycle is very sensitive to the three temperatures of ESC; (2) the variation of the degree of sub-cooling at the vapor compression sub-cycle (VCSC) is similar to that of COP improvement at EVCC over VCSC; and (3) this system with certain operating conditions results in relatively high COP improvements (15.9–21.0%).

Keywords: Vapor compression cycle; Ejector-cooling cycle; Combined refrigeration cycle; Air-cooled condenser; Sub-cooling; Performance evaluation (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:55:y:2013:i:c:p:331-337

DOI: 10.1016/j.renene.2012.12.029

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