太陽光電熱能系統設計分析

Abstract

利用PVT可回收太陽能發電系統的發電餘熱並提高發電效率，具有實用價值。 本研究擬針對光伏發電產生餘熱的回收技術(PVT)進行分析。首先發展PVT模組的熱傳與發電模型，通過電腦模擬探討PVT模組設計（貼合介面厚度與材料）、PVT系統設計以及環境因素對集熱與發電性能的影響，優化PVT系統設計，並分析PVT系統的經濟效益。 本研究以師大綠能中心太陽能系統為例，PVT系統規模為10kWp太陽能板，儲水桶大小為2400L，對該系統的長期性能進行詳細研究。 本研究發現PVT系統在設定基準點條件下，熱回收率約24.3%~29.3%，發電效率約17.5%~17.7%，對比不含PVT系統發電效率提高約5%~5.9%，總節能率約70.5%~75.9%，系統回收年限約2~12年，每年總盈利約30520~108537NTD。

The use of PVT can recover waste heat of the solar power generation system and improve power generation efficiency, which has practical value. This study intends to analyze the waste heat recovery technology (PVT) of photovoltaic power generation. Firstly, develop the heat transfer and power generation model of the PVT module, discuss the design of the PVT module (the thickness and material of the bonding interface), the design of the PVT system, and the influence of environmental factors on the performance of heat collection and power generation through computer simulation, so as to optimize the design of the PVT system, and analyze the economic benefit of the PVT system. This study takes the solar energy system of National Taiwan Normal University Green Energy Center as an example. The PVT system has a scale of 10kWp solar panels and a size of 2400L water storage tank. The long-term performance of this system is studied in detail. This study found that under the condition of the set reference point, the heat recovery rate of the PVT system is about 24.3%~29.3%, and the power generation efficiency is about 17.5%~17.7%. Compared with the system without PVT, the power generation efficiency is increased by about 5%~5.9%, and the total energy saving rate is about 70.5%~75.9%, the system payback period is about 2~12 years, and the total annual profit is about 30520~108537NTD.