Title :
PV efficiency improvement by underground heat exchanging and heat storage
Author :
Fernandes, F.T. ; Farret, Felix Alberto ; Longo, A.J. ; De Nardin, C.R. ; Trapp, J.G.
Author_Institution :
Fed. Univ. of Santa Maria, Santa Maria, Brazil
Abstract :
High efficiency in the photovoltaic (PV) panel is a relevant matter when considering the high investments for this energy source. This paper presents a PV panel efficiency improvement by heating water and heat storage as surface geothermal energy. The whole set consists of a PV panel, a heat exchanger located on the PV backside, underground hoses for heat exchange, water pump, DC-DC converter, a controller to obtain the maximum PV power point (MPP) and data logger to store data of voltage, current, radiation and temperature. This PV assembly, also known as PV thermal (PVT), is used in conjunction with surface geothermal energy to increase electrical and thermal power efficiency.
Keywords :
DC-DC power convertors; geothermal power; solar cells; thermal energy storage; DC-DC converter; MPP; PV assembly; PV efficiency improvement; PV thermal; PVT; data logger; electrical power efficiency; energy source; heat exchanger; heat storage; heating water; maximum PV power point; photovoltaic panel; surface geothermal energy; thermal power efficiency; underground heat exchanging; underground hoses; water pump; PV MPP; PV cooling; heat exchange; power electronic control; superficial geothermal;
Conference_Titel :
Renewable Power Generation Conference (RPG 2014), 3rd
Conference_Location :
Naples
DOI :
10.1049/cp.2014.0875
