scholarly journals An Analysis of the Influence of Geography and Weather on Parabolic Trough Solar Collector Design

1981 ◽  
Vol 103 (2) ◽  
pp. 98-104 ◽  
Author(s):  
G. W. Treadwell ◽  
N. R. Grandjean ◽  
F. Biggs
Keyword(s):  
Solar Collector ◽  
Input Data ◽  
Optical Model ◽  
Three Dimensional ◽  
Parabolic Trough ◽  
High Quality ◽  
Site Analysis ◽  
Design For All ◽  
Simulation Based ◽  
Parabolic Trough Solar Collector

The potential performance of single-axis tracking parabolic trough solar collectors as a function of optical energy distribution and receiver size has been calculated for 11 sites using typical meteorological year input data. A simulation based on the SOLTES code was developed which includes the three-dimensional features of a parabolic trough and calculates the thermooptical tradeoffs. The capability of the thermo-optical model has been confirmed by the comparison of calculated results with the experimental results from an all-day test of a parabolic trough. The results from this 11 site analysis indicate a potential performance superiority of a north-south horizontal axis trough and, in addition, a high quality (optical error, σsystem≤0.007-radian) collector should be of the same geometric design for all of the sites investigated and probably for all regions of the country.

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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