The influences on the absorption rate with different slope of incident light and aspect ratio are pre sented. The results show that the effect of aspect ratio on the absorption rate is larger, while the slope of incident light is relatively smaller. The results of the present work imply that the rational aspect ratio is 1. According to this conclusion, the optical path of sinusoidal corrugated solar air collector with aspect ratio 0.5, 1 and 1.5 is simulated respectively by TRACEPRO software using. The conclusion is also verified by the simulations.
Solar air collector is a heating device of using air as heat medium, and can be widely applied to solar heating, ventilating, dehumidifying and other fields. However, these devices also set low efficiency and large heat loss. How to further improve the thermal efficiency is always the goal pursued by researches. This article from the change of the absorb plate shape to begin, put forward sinusoidal-corrugated solar air collector, and the thermal performance of sinusoidal-corrugated solar air collectors was studied by numerical simulation with using CFD software, and conclusions shows that the thermal efficiency of parallel model is higher than that of vertical model by comparative analysis. Type S, type U and type X were studied by numerical simulation. Results show that type X is the best of three types.
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