Experimental Performance Study of Titanium Dioxide Nano Fluid as a Coolant in Solar Photovoltaic / Thermal System
Geetha Ramadass a, M.M.Vijayalakshmi b and E.Natarajan c
aCollege of Engineering, Guindy,1, 1st Cross Road, Institute for Energy Studies, Department of Mechanical Engineering, Anna University, Kotturpuram, Chennai-600025, TamilNadu, India.
bSathyabama Institute of Science & Technology, Department of Building & Environment, Jeppiar Nagar, Rajiv Gandhi Salai, Chennai-600 119, TamilNadu, India.
cCollege of Engineering, Guindy, 1, 1st Cross Road, Institute for Energy Studies, Department of Mechanical Engineering, Anna University, Kotturpuram, Chennai, TamilNadu600025, India.
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Abstract:
In the present work, an experimental study was conducted on a Solar Photovoltaic/Thermal System (SPV/T) to determine the effect of different concentrations of Titanium dioxide (TiO2) nanoparticles of φ = 0.1 % and 0.2 %, mixed in milli-Q water as basefluid (BF) on heat transfer characteristics through a serpentine flow copper tube heat exchanger and compared with water. The experimental setup consists of a solar photovoltaic/ thermal system (SPV/T) of 100 W capacity with a collector area of 0.91 m2. For the flow supplied by the pump, to the Solar photovoltaic/Thermal System (SPV/T) for the nano fluids with φ = 0.1 %, 0.2 % and water at mass flow rates 0.015 kg/s, 0.0133 kg/s and 0.0117 kg/s, the Electrical (PV) efficiency for water as 10.82 % to 11.06 %, TiO2 0.1 % as 11.60 % to 12.46 % and TiO20.2 % as 11.87 % to 12.81 % were investigated and obtained. The thermal efficiency for water resulted as 53.61 % to 54.07 %, TiO2 0.1 % 67.46 % to 67.82 % and TiO2 0.2 % 68.87 % to 69.05 % to respectively.
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