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An exergy analysis of a solar-driven ejector refrigeration system
KTH, Superseded Departments, Energy Technology.
KTH, Superseded Departments, Energy Technology.
2004 (English)In: Solar Energy, ISSN 0038-092X, E-ISSN 1471-1257, Vol. 76, no 4, 369-379 p.Article in journal (Refereed) Published
Abstract [en]

Energy analysis is used as a tool to analyse the performance of an ejector refrigeration cycle driven by solar energy. The analysis is based on the following conditions: a solar radiation of 700 W/m(2), an evaporator temperature of 10 degreesC, a cooling capacity of 5 kW, butane as the refrigerant in the refrigeration cycle and ambient temperature of 30 degreesC as the reference temperature. Irreversibilities occur among components and depend on the operating temperatures. The most significant losses in the system are in the solar collector and the ejector. The latter decreases inversely proportional to the evaporation temperature and dominates the total losses within the system. The optimum generating temperature for a specific evaporation temperature is obtained when the total losses in the system are minimized. For the above operating conditions, the optimum generating temperature is about 80 degreesC.

Place, publisher, year, edition, pages
2004. Vol. 76, no 4, 369-379 p.
Keyword [en]
solar cooling, ejector, exergy
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-45560DOI: 10.1016/j.solener.2003.11.004ISI: 000220241000002Scopus ID: 2-s2.0-0347091687OAI: oai:DiVA.org:kth-45560DiVA: diva2:452578
Note
QC 20111031Available from: 2011-10-31 Created: 2011-10-31 Last updated: 2017-12-08Bibliographically approved

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