Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Evaluation of energy and exergy efficiency of a solar air collector with V grove absorber plate using mathematical modeling

Authors
1 Department of Mechanical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
2 Islamic Azad University Central Tehran Branch
3 Department of Mechanical Engineering, Semnan Branch, Islamic Azad University, Semnan,
Abstract
The purpose of this study was to investigate the effect of distance between glass cover and absorber plate, the height of the V grove in the absorber plate, The mass flow rate of the air inlet to the collector, on the energy and exergy efficiencies of a solar air collector with V grove absorber plate, by mathematical modeling. The heater is of dual pass type and its length, width and height are 2, 1 and 0.2 meters, respectively. The distance between the glass and the absorber plate is 12.5, 25, 50, 75, 100 millimeter,
, respectively. The results show that by increasing the distance between the glass and the absorber, the thermal efficiency increases by 9 percent and the exergy efficiency by 30 percent. Also increasing the height of the V grove more than 10 cm will not cause significant changes in the efficiency of the first and second laws.
Keywords

Subjects


 
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Volume 22, Issue 2 - Serial Number 59
Fluid Mechanics and Heat Transfer
Spring 2020
Pages 148-175

  • Receive Date 19 January 2020
  • Revise Date 03 April 2020
  • Accept Date 08 November 2020