Experimental investigations of hybrid PV/Spiral flow thermal collector system performance using Al2O3/water nanofluid

Frontiers in Automobile and Mechanical Engineering

Gangadevi, R.^1 ; Vinayagam, B.K.^1 ; Senthilraja, S.^1

Department of Mechatronics Engineering, SRM University, Chennai, India^1

关键词: Electrical efficiency;    Experimental investigations;    Infrared wavelengths;    Nanofluids;    Photovoltaic thermals;    PVT system;    Thermal collectors;    Thermal efficiency;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/197/1/012041/pdf
DOI  :  10.1088/1757-899X/197/1/012041

来源: IOP

【 摘 要 】

In this paper, the PV/T (Photovoltaic thermal unit) system is investigated experimentally to examine the thermal, electrical and overall efficiency by circulating Al2O3/water nanofluid of 1wt% and 2wt% with an optimum flow rate of 40L/H. The overall efficiency of PVT system is largely influenced by various factors such as heat due to photovoltaic action; energy radiated at the infrared wavelength of the solar spectrum, solar irradiance, mounting structure, tilt angle, wind speed direction, Ambient temperature and panel material composition. However, the major factor is considered in this study to extract the heat generated in the PV panel by using nanofluid as a coolant to increase the overall system efficiency. Therefore, the result shows that by using 2 wt% Al2O3/water nanofluid the electrical efficiency, thermal efficiency and overall efficiency of the PVT system enhanced by 13%, 45%, and 58% respectively compared with water.