Paper Information

Journal:   JOURNAL OF ENERGY MANAGEMENT   JULAY 2011 , Volume 1 , Number 1; Page(s) 57 To 65.
 
Paper: 

NUMERICAL ANALYSIS OF WIND EFFECT ON PERFORMANCE OF UNGLAZED TRANSPIRED SOLAR COLLECTOR

 
 
Author(s):  KHORASANIZADEH H.*, SABZPOOSHANI M., ABDOLLAHI TAHERI R.
 
* DEPARTMENT OF MECHANICAL ENGINEERING, UNIVERSITY OF KASHAN, KASHAN, IRAN
 
Abstract: 

Considering problems associated with nonrenewable fuels such as pollution and high cost, efforts are being made to develop use of renewable energy sources like solar energy. Solar collectors could often be employed as important devices for thermal applications. Unglazed Transpired Collector (UTC) is a modern preheating and heating equipment used for ventilating air or drying crops. Heat transfer in the UTC is accomplished by passing air through holes of the unglazed collector. In this study, the effect of wind stream parallel to the collector surface on its performance is investigated using numerical techniques. The study is based on total energy balance where new equations are incorporated in order to consider the wind effect. The results show that increasing the wind velocity may decrease or increase the collector efficiency depending on the incoming air approach velocity. This is due to opposite effects of wind and radiation heat losses with convection heat transfer from collector surface to inlet air. Moreover, the heat exchange effectiveness increases with increasing the wind velocity for any approach velocity.

 
Keyword(s): UNGLAZED TRANSPIRED SOLAR COLLECTOR, WIND VELOCITY, COLLECTOR EFFICIENCY, NUMERICAL ANALYSIS
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 63
 
Latest on Blog
Enter SID Blog