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Transient test of a solar air heater with a compound parabolic concentrator

Author

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  • Pramuang, S.
  • Exell, R.H.B.

Abstract

A method for measuring the performance parameters of a solar thermal collector under non-steady conditions has been applied to an air heater with a truncated compound parabolic concentrator having an aperture area of 1.44m2 and a flat absorber with concentration ratio three. This type of collector was chosen in order to obtain high air temperatures in a tropical climate where the proportion of diffuse solar radiation is high. The parameters found were the optical efficiency, the linear and nonlinear heat loss coefficients, and the effective heat capacity. These parameters were determined individually in separate experiments, some with and some without solar radiation falling on the collector. Agreement within 2% was found between the optical efficiency measured in the experiments and the optical efficiency determined from direct measurements of the optical properties of the materials in the collector. The method can be performed all the year round in a tropical climate when steady conditions do not occur.

Suggested Citation

  • Pramuang, S. & Exell, R.H.B., 2005. "Transient test of a solar air heater with a compound parabolic concentrator," Renewable Energy, Elsevier, vol. 30(5), pages 715-728.
    • Handle: RePEc:eee:renene:v:30:y:2005:i:5:p:715-728
    DOI: 10.1016/j.renene.2004.01.013
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    Cited by:

    1. Parthiban, Anandhi & Baig, Hasan & Mallick, T.K. & Reddy, K.S., 2022. "Performance investigation of SUNTRAP module for different locations: An energy and exergy analysis," Renewable Energy, Elsevier, vol. 199(C), pages 140-156.
    2. Saxena, Abhishek & Varun, & El-Sebaii, A.A., 2015. "A thermodynamic review of solar air heaters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 863-890.
    3. Tchinda, Réné, 2009. "A review of the mathematical models for predicting solar air heaters systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(8), pages 1734-1759, October.
    4. Tang, Feng & Li, Guihua & Tang, Runsheng, 2016. "Design and optical performance of CPC based compound plane concentrators," Renewable Energy, Elsevier, vol. 95(C), pages 140-151.

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