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Exergetic optimization of flat plate solar collectors

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  • Farahat, S.
  • Sarhaddi, F.
  • Ajam, H.

Abstract

In this paper, an exergetic optimization of flat plate solar collectors is developed to determine the optimal performance and design parameters of these solar to thermal energy conversion systems. A detailed energy and exergy analysis is carried out for evaluating the thermal and optical performance, exergy flows and losses as well as exergetic efficiency for a typical flat plate solar collector under given operating conditions. In this analysis, the following geometric and operating parameters are considered as variables: the absorber plate area, dimensions of solar collector, pipes' diameter, mass flow rate, fluid inlet, outlet temperature, the overall loss coefficient, etc. A simulation program is developed for the thermal and exergetic calculations. The results of this computational program are in good agreement with the experimental measurements noted in the previous literature. Finally, the exergetic optimization has been carried out under given design and operating conditions and the optimum values of the mass flow rate, the absorber plate area and the maximum exergy efficiency have been found. Thus, more accurate results and beneficial applications of the exergy method in the design of solar collectors have been obtained.

Suggested Citation

  • Farahat, S. & Sarhaddi, F. & Ajam, H., 2009. "Exergetic optimization of flat plate solar collectors," Renewable Energy, Elsevier, vol. 34(4), pages 1169-1174.
    • Handle: RePEc:eee:renene:v:34:y:2009:i:4:p:1169-1174
    DOI: 10.1016/j.renene.2008.06.014
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    References listed on IDEAS

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    1. Luminosu, I. & Fara, L., 2005. "Determination of the optimal operation mode of a flat solar collector by exergetic analysis and numerical simulation," Energy, Elsevier, vol. 30(5), pages 731-747.
    2. Suzuki, Akio, 1988. "General theory of exergy-balance analysis and application to solar collectors," Energy, Elsevier, vol. 13(2), pages 153-160.
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