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1991
Conference Paper
Title
The self-sufficient solar house. Electrical concept
Abstract
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.