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An improved thermal and electrical model for a solar photovoltaic thermal (PV/T) air collector

Author

Listed:
  • Sarhaddi, F.
  • Farahat, S.
  • Ajam, H.
  • Behzadmehr, A.
  • Mahdavi Adeli, M.

Abstract

In this paper, an attempt is made to investigate the thermal and electrical performance of a solar photovoltaic thermal (PV/T) air collector. A detailed thermal and electrical model is developed to calculate the thermal and electrical parameters of a typical PV/T air collector. The thermal and electrical parameters of a PV/T air collector include solar cell temperature, back surface temperature, outlet air temperature, open-circuit voltage, short-circuit current, maximum power point voltage, maximum power point current, etc. Some corrections are done on heat loss coefficients in order to improve the thermal model of a PV/T air collector. A better electrical model is used to increase the calculations precision of PV/T air collector electrical parameters. Unlike the conventional electrical models used in the previous literature, the electrical model presented in this paper can estimate the electrical parameters of a PV/T air collector such as open-circuit voltage, short-circuit current, maximum power point voltage, and maximum power point current. Further, an analytical expression for the overall energy efficiency of a PV/T air collector is derived in terms of thermal, electrical, design and climatic parameters. A computer simulation program is developed in order to calculate the thermal and electrical parameters of a PV/T air collector. The results of numerical simulation are in good agreement with the experimental measurements noted in the previous literature. Finally, parametric studies have been carried out. Since some corrections have been down on thermal and electrical models, it is observed that the thermal and electrical simulation results obtained in this paper is more precise than the one given by the previous literature. It is also found that the thermal efficiency, electrical efficiency and overall energy efficiency of PV/T air collector is about 17.18%, 10.01% and 45%, respectively, for a sample climatic, operating and design parameters.

Suggested Citation

  • Sarhaddi, F. & Farahat, S. & Ajam, H. & Behzadmehr, A. & Mahdavi Adeli, M., 2010. "An improved thermal and electrical model for a solar photovoltaic thermal (PV/T) air collector," Applied Energy, Elsevier, vol. 87(7), pages 2328-2339, July.
    • Handle: RePEc:eee:appene:v:87:y:2010:i:7:p:2328-2339
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    References listed on IDEAS

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