Optimal Parameter Design and Practical Validation of Bifacial Photovoltaic Thermal Energy Composite System

• Main Authors: Pei-Chung Yang, 楊沛中
• Other Authors: Chung-Feng Jeffrey Kuo
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/86663799368897851195

碩士 === 國立臺灣科技大學 === 自動化及控制研究所 === 103 === This study discusses the relationship of the most important setup parameters (including collector material, number of heat collecting pipes, diameter of heat collecting pipe, Volume to Area(V/A) ratio, mass flow rate, cycle temperature and azimuth) influencing Bifacial Photovoltaic and Thermal Composite Module(BPV/T) to the electrical efficiency and heat storage efficiency. First, the experiment is designed by Taguchi method. Optimized setup parameter combinations design is made for each quarter according to the track and elevation angle of sun. The testing software TRaNsient System Simulation(TRNSYS) is used for simulation and combined with Main Effect Analysis(MEA) and Analysis of Variance(ANOVA) to review the effect of various setup parameters on each single quality characteristic (electrical efficiency and heat storage efficiency), and to obtain various single quality characteristic optimized setup parameter combinations. Considering electrical efficiency and heat storage efficiency multiple quality characteristics optimization, the Principal Component Analysis(PCA) of multiple quality characteristics theory is used to calculate the objective weights of each properties, combined with Elimination Et Choice Translating Reality(ELECTRE) to work out the multiple quality characteristics optimized setup parameter combinations, practical validation is implemented according to multiple quality characteristics optimized setup parameter combinations. It is observed that single quality characteristic and multiple quality characteristics optimized setup parameter combinations of simulation test are in the 95% confidence interval, the maximum error of electrical efficiency and heat storage efficiency and of practical validation and simulation test is less than 4.3%, simulation test has reliability. This study analyzes the BPV/T, Photovoltaic(PV) and Photovoltaic and Thermal(PV/T) benefit and floor area of installed capacity 1 kW. Compared with PV/T, BPV/T has 13.7% higher annual power generation, 4.8% higher thermal storage capacity and 0.2 year shorter cost recovered years; compared with PV, annual power generation is higher by 19.25%, annual overall energy output is higher by 389% and cost recovered years is shorter by 4.8 years. Based on 20-year warranty of photovoltaic module, in terms of economic benefit deducting construction cost: BPV/T is higher than PV/T by 18%, higher than PV by 460%; comparison of floor area: BPV/T is less than PV and PV/T by 11%, and overall energy output per unit area: BPV/T is higher than PV/T by 20%, higher than PV by 210%.