Design and Fabrication of the Combined Thermal Electric System for Solar Energy Conversion

• Main Authors: Chun-Po Liao, 廖俊博
• Other Authors: 盧昭暉
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/06198654508119292852

碩士 === 國立中興大學 === 機械工程學系所 === 100 === Combined solar electric and thermal system is a combination of solar electric system and solar thermal system, such that both electric power and hot water can be produced at the same time. Then we discuss to simulate the different tracking system for solar electric and thermal system. The solar collecting system includes concentrator, frame, and solar tracking system. The hot water system includes flat collector, receiving plate, water tubes, storage tank, and pump. The power generation system is thermoelectric modules. A theoretical model of the whole system was derived according to the specifications of the thermoelectric module and the system design parameters, and the system performance was calculated to obtain the optimized setting of working condition such that the best efficiency of the system can be achieved. A miniature system was established and its performance was tested. It was found that at the solar radiation flux of 800 W/m2, a total efficiency of 50% could be achieved. However, most of the solar energy has been converted to thermal energy instead of electricity. Our thermal electric system’s total efficiency can reach 35~40% and power generation of thermoelectric modules can reach 0.3~0.4%.