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Maximum exergy input rate from a hot stream in solar driven refrigerants

Vargas, José V.C. and Fleming, J.S. and Parise, José A.R. (2001) Maximum exergy input rate from a hot stream in solar driven refrigerants. International Journal of Energy Research, 25 (9). pp. 751-767. ISSN 0363-907X

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Abstract

The authors believe that reducing the size of solar-driven refrigerators and air conditioning systems will make them more attractive to potential users. This paper presents a contribution to understanding the behaviour of such systems with a view to determining the manner in which refrigeration rate, mass flows and heat transfer areas are related. The intention is to make possible the identification of preliminary design rules. The basic thermodynamic problem of how to obtain maximum exergy input rate in a solar-driven refrigerator is considered. The existence of an optimal refrigerant flow rate for maximum refrigeration is investigated. The analysis proceeds by relating the entropy generation rate, the physical and operating parameters, and the constraints of the system, through well-established heat transfer relationships. Finally, a thermodynamic analysis determines the optimal characteristics that lead to minimum entropy generation. The second law efficiency is identified as the appropriate figure of merit for the thermodynamic optimum.

Item type: Article
ID code: 5970
Keywords: absorption and ejector refrigerators, second law efficiency, entropy generation minimization, Mechanical engineering and machinery, Energy Engineering and Power Technology, Nuclear Energy and Engineering, Fuel Technology, Renewable Energy, Sustainability and the Environment
Subjects: Technology > Mechanical engineering and machinery
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 02 May 2008
    Last modified: 04 Sep 2014 14:41
    URI: http://strathprints.strath.ac.uk/id/eprint/5970

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