Energy and Exergy Analyses of Photovoltaic-Thermal (PV/T) System with TiO2/Water Nanofluid Flow

International Conference on Sustainable Energy and Green Technology 2018

能源学;生态环境科学

Binti Rukman, Nurul Shahirah^1 ; Fudholi, Ahmad^1 ; Mohd Razali, Nur Farhana^1 ; Hafidz Ruslan, Mohd^1 ; Sopian, Kamaruzzaman^1

Solar Energy Research Institute, Universiti Kebangsaan Malaysia, Bangi, Selangor

43600, Malaysia^1

关键词: Energy and exergy analysis;    Heat transfer rate;    Mass flow rate;    Nanofluid flow;    Photovoltaic thermals;    PV efficiencies;    Radiation levels;    Thermal efficiency;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/268/1/012075/pdf
DOI  :  10.1088/1755-1315/268/1/012075

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Nanofluids are a new generation of heat-transfer fluid with higher thermal conductivity and improved heat-transfer rate compared with conventional fluids. In this study, TiO2/water (0.5wt% and 1.0wt% TiO2 in water) nanofluids were used as a coolant to investigate a PV/T system under solar-radiation levels of 700 and 900 W/m2 and mass-flow rate ranging from 0.012 kg/s to 0.0255 kg/s. The TiO2/water nanofluid-based PV/T collector produced PV/T efficiency of approximately 75% to 90% with 9.9% to 10.6% PV efficiency and 65% to 80% thermal efficiency. Meanwhile, the PV/T exergy was between 53 and 73 W with thermal exergy of 6.3 W to 11.9 W and electrical exergy of 46.7 W to 60.1 W.