Design framework for the development of dual heat recovery system in photo-voltaic powered air conditioning systems
Energy regeneration through heat recovery is practically possible for maximizing energy obtained from the sun,by recovering and reusing the heat that is typically lost within energy dependent electrical equipments.The study is aimed at developing an efficient and cost effective heat recovery system,which is an improvement to existing variants.Solar thermal systems utilise flat plates or evacuated tube collectors which absorb the heat from the sun.Similarly,Photo-Voltaic(PV)systems absorb solar irradiation to generate electricity.A combination of both technologies results in Solar Photo-Voltaic Thermal(PV/T)systems wherein thermal plates or liquid contained tubes cool PV collectors resulting in increased efficiency.The PV cooling mechanism is important because excessive heat in PV panels generates high resistance,which impedes the performance of the solar cell and in the process,results in lower efficiency.PV/T systems are currently sold at relatively high cost and their availability is limited.The study focuses on the development of a dual heat recovery system for harnessing both the heat build-up on the PV plates and the heat generated from the heat exchanger exhaust outlet of a solar air-conditioning system,by incorporating electro-thermal generators and Peltier devices for the optimisation process.The research is sectioned into design,prototype development,and a testing phase.The focus of this paper is to share the design phase of the project.The design highlighted herein is a cost effective and highly efficient PV/T model with a different heat absorption approach in comparison to conventional PV/T systems.The heat recovery system design is complete and is currently undergoing extensive tests to complete the testing and optimisation phase.
Heat Recovery PV/T PVT Photovoltaic thermal Peltier fan Design
Koketso MADITSI Timothy LASEINDE
University of Johannesburg,Johannesburg
国际会议
武汉
英文
1-10
2018-08-21（万方平台首次上网日期，不代表论文的发表时间）