| Summary: | 碩士 === 國立清華大學 === 工程與系統科學系 === 103 === solar air collector concept is used to induce natural cooling and reduce heat leak into the indoor simultaneously. In this study, the waste heat can be potentially employed for electricity generation by the organic Rankie cycle (ORC) system. The purpose of this study is to perform the flow and heat of solar ventilation by commercial CFD code. To Make numerical result accurate, the Solar Ray Tracing was used instead of set isothermal or constant heat flux on the wall. This study including both experiment and numerical simulation studies how to efficiently gather this solar thermal energy. The local heat transfer correlation was investigated to predict surrounding wind speed upon device cover. Three glass sort and several channel aspect ratio was compared to know the best configuration. It is also discuss the stagnant layer thickness, emissivity on the illustrated surface, mass flow rate and device height. Consequently, the relationship between mass flow rate and device height is found to know the suitable mass flow rate at different device height.
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