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Studies on semi-cylindrical solar tunnel dryers: estimation of solar irradiance

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  • Garg, H.P.
  • Kumar, Rakesh

Abstract

This is the first part of a set of two papers, about the estimation of solar irradiance on the absorber plate and cover of a semi-cylindrical solar tunnel dryer (STD). The second part discusses the modelling and thermal performance results of the STD. A detailed analysis has been carried out in this paper for solar irradiance estimation for the general orientation of the STD with respect to reference positions (N-S, E-W). The obtained values of solar irradiance for the absorber plate and cover includes the internal reflection effect up to second-order. It is found that if the STD axis is in the E-W, the absorber plate receives more solar radiation as compared to the other reference position N-S. The amount of solar irradiation absorbed by the cover is also calculated and found very small compared to the absorber. All calculations have been made for Delhi climate (28.58°N latitude).

Suggested Citation

  • Garg, H.P. & Kumar, Rakesh, 1998. "Studies on semi-cylindrical solar tunnel dryers: estimation of solar irradiance," Renewable Energy, Elsevier, vol. 13(3), pages 393-400.
    • Handle: RePEc:eee:renene:v:13:y:1998:i:3:p:393-400
    DOI: 10.1016/S0960-1481(98)00002-0
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    Cited by:

    1. Husham Abdulmalek, Shaymaa & Khalaji Assadi, Morteza & Al-Kayiem, Hussain H. & Gitan, Ali Ahmed, 2018. "A comparative analysis on the uniformity enhancement methods of solar thermal drying," Energy, Elsevier, vol. 148(C), pages 1103-1115.
    2. Murthy, M.V. Ramana, 2009. "A review of new technologies, models and experimental investigations of solar driers," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(4), pages 835-844, May.

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