scholarly journals HEAT TRANSFER ENHANCEMENT IN ABSORBER TUBE OF PARABOLIC TROUGH SOLAR COLLECTOR USING LONGITUDINAL CURVED FINS

2021 ◽  
Vol 22 (1) ◽  
pp. 21-33
Author(s):  
Ramesh K. Donga
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Enhancement ◽  
Solar Collector ◽  
Transfer Enhancement ◽  
Parabolic Trough ◽  
Parabolic Trough Solar Collector

scholarly journals Numerical investigation of heat transfer enhancement inside a parabolic trough solar collector using dimpled absorber

2017 ◽  
Vol 2 (2) ◽  
pp. 01
Author(s):  
Amina Benabderrahmane
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Enhancement ◽  
Numerical Investigation ◽  
Solar Collector ◽  
Three Dimensional ◽  
Finite Volume Methods ◽  
Transfer Enhancement ◽  
Parabolic Trough ◽  
Remarkable Effect ◽  
Parabolic Trough Solar Collector

Three dimensional numerical investigation of heat transfer enhancement in a non-uniformly heated parabolic trough solar collector using dimpled absorber under turbulent flow was incorporated in the current paper. The governing equations were solved using the finite volume methods (CFD) with certain assumptions and appropriate boundary conditions. The Monte Carlo ray trace technique was applied to obtain the heat flux distribution around the absorber tube. The numerical results were validating with the empirical correlations existing in the literature and good agreement was obtained. The present results demonstrate that the inclusion of inserts provide a good performance in heat transfer,   also the receiver temperature gradient are shown to reduce with the use of geometrical modification, the absorber geometry have a remarkable effect on the HTF velocity distribution.

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