Performance analysis of a combined vapor compression cycle and ejector cycle for refrigeration cogeneration |
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| Affiliation: | 1. Unité de Recherche Energétique et Environnent, Ecole National d''ingénieur de Tunis, 37 Le Belvédère, Tunis, Tunisia;2. Laboratoire d''Études des Systèmes Thermiques et Énergétiques, Ecole National d''ingénieur de Monastir, Avenue Ibn El Jazzar, 5019 Monastir, Tunisia;3. Mechanical Engineering Department, Jordan University of Science and Technology, Irbid, Jordan;1. Ningbo Institute of Technology, Zhejiang University, 1, QuianHu South Road, Ningbo City 315100, Zhejiang Province, China;2. Ejector Refrigeration Technologies Center, Odessa National Academy of Food Technologies, 112, Kanatnaya St., Odessa 65039, Ukraine;1. Department of Mechanical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;2. Department of Mechanical Engineering, University of California, Riverside, CA 92521, USA |
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| Abstract: | A hybrid vapor compression refrigeration (HVCR) system, which combines a vapor compression refrigeration (VCR) system and an ejector refrigeration (ER) system, was developed. The waste heat energy from the gas cooler in the VCR system is applied as driven source towards ER system.Thermodynamic investigations on the performance of the HVCR system, using CO2 as a refrigerant, are performed with energetic and exergetic methods, and the comparative analyses with the VCR system are conducted. Comprehensive effects of key operating parameters on the system performance are also studied. The results indicate that for the same cooling capacity, the coefficient of performance (COP) of the HVCR system shows 25% higher COP and the total mechanical power consumption is reduced by 20% than that of conventional VCR system, respectively. The performance characteristics of the proposed cycle show its application potential in cooling and air-conditioning. |
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