Heat Transfer Enhancement In Parabolic Trough Collector Tube Using Al2o3/synthetic Oil Nanofluid
Résumé: Given to the environmental and uncertainty about future energy supplies, solar energy is the best alternative in spite of its slightly higher operating costs. Currently, solar power plants play an important role in energy production by converting solar radiation into heat or electricity. The technology of parabolic trough collector is the most economical and most proven one. One of the major problems of this technology is energy storage and compact designs. The solution is to replace the working fluid with a nanofluid as a new strategy to improve the heat transfer proprieties of the fluid. A numerical simulation of the flow and heat transfer in a parabolic trough solar collector subjected to non-uniform solar flux (concentrated on the focal strip) was carried out using two heat transfer fluids (Syltherm and nanofluid). The simulation by the fluent software was performed using the single phase for nanofluids and then compared to the results from the based fluid . The results show that the use of nanofluids improves satisfactorily the heat flux exchanged compared to the based fluid.
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