本論文藉由探討光電(Photovaltaic)與熱回收(Thermal Recycling)混合系統(PV/T)之應用，期望提出一套利用廢熱回收裝置來提升整體太陽能電熱系統效率。PV/T混合系統之開發工作包括：太陽能發電系統（含二次式極值法之最大功率點追蹤技術應用）、廢熱回收系統之架設（含熱水回收）及太陽能電池與加壓馬達之功率量測。利用美商國家儀器公司的Compact RIO(cRIO)嵌入式控制器，並結合周邊模組進行系統參數之量測與控制，系統之開發得以整合並達到吾人實驗目的之需求。
太陽能發電系統利用分散式發電系統的架構於太陽能板下配置專屬之最大功率追蹤及DC/DC變壓器，以掌握溫度與日照度變化造成最大功率點位置的改變；廢熱回收系統以霧狀水流降低太陽能電池背板溫度，並以實驗探討PV/T混合系統之最佳工作條件，藉此來實現一套具有高整體效率之PV/T混合系統，也希望本研究數據可作為往後其它相關太陽能光電與熱回收混合系統應用之參考。

This study uses a hybrid system of a photovoltaic solar panel and a thermal-recycling hot-water arrangement (PV/T) to discuss the overall PV and hot water generation efficiency. The development of this hybrid system includes a solar panel with its own DC/DC converter operating at its maximum power point condition by quadratic maximization technique, and a hot water system using sprinkle nozzles to recycle the thermal heat from the back side of the solar panel. The entire mechatronic system operates under NI compact RIO platform including the embedded controller, input/output modules and self-developed DC/DC converter for system variables measuring and controlling.
Thanks to the development of the distributed PV harvesting system, this work is able to generate maximum possible solar energy from the sun at changing insolation and any temperature variation due to heat recycling process of the water droplets. Experiment observation shows that the cooling system can increase the PV panel’s efficiency up to 4.06 %, and the thermal efficiency is about 25%~40%. It is then possible to identify the optimal working conditions for maximum PV power generation and heat recycling for the hybrid system in consideration. The work can be also helpful in designing a larger hybrid PV/T system for residential purpose.

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