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Evaluation of Energy Self-supply in Single Family Homes of Concepción, Chile

Abstract:

This work analyses integrated capture of solar energy and consumption statistics in a singlefamily house of real estate developments in Concepcion, Chile, in order to assess self-supply for netzero, plus-energy and/or powerhouse aptitude. A current house model is selected, and partially modified to improve its thermal performance and solar capture. Then, alternatives to integrated photovoltaic and thermal solar technologies are studied (BIPV, BISTw, BIPVTa and BIPVTw). Energy demands on typical seasonal days are compared to production in different combinations, then energy deficits and surpluses were obtained. An annual energy balance of approximately 174% has been estimated with the use of Building Integrated Photovoltaics technology only, and with BIPVTw and BIPVTa technologies, a maximum of 251% of the energy demand is possible to be produced. However, additional actions must be considered to compensate for daily and seasonal differences, to fulfil an energy self-supply and to feed the urban grid or other services.