Open AccessEffect of Silica Oxide SiO2/Water Nanofluids Volume Concentration Ratio on Photovoltaic Thermal (PVT) Collector Efficiency
Author(s) -
W. Mustafa,
Ahmad Fudholi,
Kamaruzzaman Sopian,
Jasrina Jaafar,
Muslizainun Mustapha
Publication year - 2021
Publication title -
heat and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.283
H-Index - 29
ISSN - 0392-8764
DOI - 10.18280/ijht.390612
Subject(s) - nanofluid , materials science , photovoltaic system , volumetric flow rate , radiation , thermal , thermal efficiency , volume (thermodynamics) , electrical efficiency , working fluid , water flow , thermal radiation , composite material , environmental engineering , environmental science , optics , mechanics , thermodynamics , nanotechnology , electrical engineering , chemistry , nanoparticle , power (physics) , physics , organic chemistry , combustion , engineering
The main challenge for photovoltaic systems is to withstand the high surface and ambient temperatures caused by direct solar radiation, which decreases system efficiency. This research aims to develop a photovoltaic thermal system cooling method using nanofluid SiO2/water with a volume concentration of 0.5-1.5 vol.% and a radiation rate of 450-850W/m2. The working fluid flow rate is between 1.8 and 6 L/min at each radiation rate. SiO2/water 1.5 vol.% under 850W/m2 radiation with a flow rate of 6 L/min produced the best results, with an average overall efficiency of 71.99%, the thermal efficiency of 63.43%, and electrical efficiency of 8.56%. However, the highest electrical energy efficiency was achieved at 650W/m2 with a 9.27% efficiency.