A novel solar bi-ejector refrigeration system and the performance of the added injector with different structures and operation parameters

Journal Article · Tue Dec 15 04:00:00 EST 2009 · Solar Energy

DOI:https://doi.org/10.1016/J.SOLENER.2009.08.012· OSTI ID:21236030

Wang, Fei; Shen, Shengqiang ^[1]

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1. Key Laboratory of Sea Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024 (China)

A novel solar bi-ejector refrigeration system was investigated, whose difference compared to the traditional system is that the circulation pump is replaced by a thermal injector. The new system works more stably and needs less maintenance work than the old one, and the whole system can more fully utilize the solar energy. The mathematical models for calculating the performance of the injector and the whole solar refrigeration system were established. The pressure rise performance of injector under different structure and operation parameters and the performance of solar bi-ejector refrigeration system were studied with R123. The results show that the discharged pressure of injector is affected by structure dimensions of injector and operation conditions. With increasing generation temperature, the entrainment ratio of ejector becomes better while that of injector becomes worse and the overall thermal efficiency of the solar bi-ejector refrigeration system first increases and then decreases with an optimum value of 0.132 at generation temperature of 105 C, condensation temperature of 35 C and evaporation temperature of 10 C. (author)

• OSTI ID: 21236030
• Journal Information: Solar Energy, Journal Name: Solar Energy Journal Issue: 12 Vol. 83; ISSN 0038-092X; ISSN SRENA4
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
Bi-ejector refrigeration
COMPARATIVE EVALUATIONS
ENTRAINMENT
Injectors
MAINTENANCE
MATHEMATICAL MODELS
OPERATION
PERFORMANCE
SIZE
SOLAR REFRIGERATORS
TEMPERATURE DEPENDENCE
THERMAL EFFICIENCY