International Journal of Engineering Research and Technology. ISSN 0974-3154 Volume 6, Number 6 (2013), pp. 747-752 © International Research Publication House http://www.irphouse.com A Novel Hybrid Solar System Using Nanofluid R. Gangadevi 1 , Shobhit Agarwal 2 and Shirsho Roy 3 1 Faculty, Mechatronics Department, SRM University, Chennai-603203. 2,3 UG Scholar, Mechatronics Department, SRM University, Chennai-603203. Abstract This paper presents a novel based hybrid solar system using Nanofluids. The conversion efficiency of the commercial solar cell is about 6-15%. More than 85% of the incoming solar energy is either reflected or absorbed as heat energy. In order to get more electricity and thermal power from hybrid system, it is necessary to cool the solar cell and decrease its temperature. The conventional heat transfer fluids such as water, Ethylene Glycol etc. are used as a coolant in the commercial hybrid solar cell. But the conventional coolants are having poor thermal conductivity compared to nanoparticle suspended fluid (Nanofluid). In this paper the performance of the solar photovoltaic cell is investigated experimentally. The experimental result shows that the electrical and thermal efficiency of hybrid solar system increases considerably by using the nanofluid as a working fluid. Keywords: hybrid system; nanofluidefficiency; heat transfer. 1. Introduction Solar energy is one of the cleanest renewable sources of energy available. Hybrid system is the integration of photovoltaic cell and solar thermal collector in which the photovoltaic cell converts photos into electricity and thermal collector capture the remaining energy and removes waste heat from the PV module. The overall efficiency of this system is comparatively high than the individual Photovoltaic system or a solar thermal system .In this system a thermal collector is placed underneath of the PV panel to remove the heat generated in the PV panel, because the Photovoltaic cells suffer from a drop in efficiency with the rise in temperature due to increased resistance. Such system should to cool by fluid stream like air, water, refrigerant or any other coolant to improve the efficiency by lowering the resistance of PV panel. In this paper the