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In this article, the heat transfer characteristics of parabolic solar collector with two segmental rings has been investigated numerically. The effect of distance between porous two segmental rings on the heat transfer coefficient of the collector has been studied. The heat transfer fluid is Therminol 66 and the model is solved by RNG k–Ɛ turbulent model using Computational Fluid Dynamics (CFD) package, FLUENT. This numerical simulation is implemented for different distances between two segmental rings, the results show that use of two segmental rings in tubular solar absorber enhances the heat transfer characteristics of solar parabolic collector. Also by decreasing the distance between two segmental rings,the heat transfer coefficient increases.

Three-dimensional Numerical Analysis Of Heat Transfer Characteristics Of Solar Parabolic Collector With Two Segmental Rings