Numerical Simulation Investigation on the Optimum Air Layer Spacing between Absorber and Glass Cover in Flat Plate Solar Collectors with Small Convective Heat Loss

In this paper, Fluent is applied to predict the convective heat loss of the air cavity between absorber and glass cover of flat plate solar collector. Two-dimensional numerical models generally performed poorly to predict the heat transfer results at α<70° due to the intrinsic three-dimensional n...

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Bibliographic Details
Published in2009 International Conference on Energy and Environment Technology Vol. 1; pp. 756 - 759
Main Authors Ding Yun, Yang Qing, Gao Meng Li, Cui Yong Liang
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2009
Subjects
CFD simulation
Computational fluid dynamics
flat plate solar collector
Glass
Heat engines
Heat transfer
Mathematical model
natural convection loss
Numerical simulation
Power engineering and energy
solar energy
Solar heating
Space heating
Temperature
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Summary:In this paper, Fluent is applied to predict the convective heat loss of the air cavity between absorber and glass cover of flat plate solar collector. Two-dimensional numerical models generally performed poorly to predict the heat transfer results at α<70° due to the intrinsic three-dimensional nature of the flow, three-dimensional modeling is applied and found to predict well the average heat transfer quantities. Results of the three-dimensional numerical simulation has been compared with literature ones, and they give a reliable agreements. The optimum air layer spacing of flat-plate solar collector was simulated with three-dimensional model and has got the result of about 50mm at inclination of 0°, 30° and 45°and 20mm at perpendicular case.
ISBN:9780769538198
0769538193
DOI:10.1109/ICEET.2009.189