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The self-sufficient solar house. Electrical concept

: Bopp, G.

Arden, M.E.; Burley, S.M.A.; Coleman, M.:
Solar World Congress. Vol.3, Part I
Oxford: Pergamon Press, 1991
ISBN: 0-08-041690-X
International Solar Energy Society (Congress) <12, 1991, Denver/Colo.
Fraunhofer ISE ()
efficient electrical appliance; electrolyser; fuel cell; hydrogen; oxygen; photovoltaic; self-sufficiency; solar house

At present, the Fraunhofer Institute for Solar Energy Systems is planning the construction of a self- sufficient solar house which will use solar radiation as its only energy source (Goetzberger, 1991; Stahl, 1991). The project is supported by the BMFT (Federal Ministry of Research and Technology). A PV-generator of approximately 4 kWsubp provides all the electrical power for appliances and the central system, and indirectly supplies hydrogen gas for cooking and additional heating. A lead-acid battery is used for short-term storage. For long-term storage (summer to winter) an electrolyser is used, which produces oxygen and hydrogen. In winter the gases are either transformed in a fuel cell to provide electricity for electrical appliances or used directly for cooking and additional heating. Water is only commodity provided to the house by a public utility; it has neither an electrical connection to the grid nor an external gas supply.