Description: Das Projekt "PV system with gas powered generator (oberline house)" wird vom Umweltbundesamt gefördert und von Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V., Zentralverwaltung durchgeführt. Objective: To demonstrate the economic viability of a small photovoltaic system (1.5 KWp) in combination with motor/generator, to provide power for a remote youth hostel. The goal was to supply in summer primarily electricity by the pv system and to supplement it in winter with the liquid gas fuelled generator. In this demonstration, the battery size was smaller than the usual size because the battery can be recharged regularly in winter by the generators. General Information: Two of the originally planned three subprojects had to be cancelled: one burned down after erection (1986, Oekohaus in Freiburg), the other one ((Oekotherm) was not even started for lack of an appropriate site. The Oberlin House (Alsace) (48,15'N; 7'E) is equipped with a combination of a photovoltaic generator (1.48 kWp) and a propane motor/generator (12 kVA) with battery storage (28.8 kWh) and an inverter (1.6 kW). The combination allows power to be drawn from the battery without running the generator for much of the summer, and reduces generator running times in winter. To provide adequate power all year round by PV alone would be more expensive at these power levels than to use the combined system. The array field could not be integrated into the roof, as originally planned, for lack of permission. It now consists of 38 modules of type AEG PQ 10/40 mounted on a rack (south oriented, 49' inclination) about 40 m away from the house. An additional module supplies electricity to the autonomous measurement system. The separation of the domestic electric circuits into a 24 V dc circuit for the lighting and a 220 V a circuit for machines and appliances avoids inefficient partial load operation. The originally used inverter with poor efficiency and high losses at no load was replaced (Oct. 1989) by the inverter GWR1600 AT (manufacturer: AL-Elektronik). The charge controller was replaced in May 1989 because of interference and over voltage problems by another one of new design. The planned, patented, twin battery system did not work correctly and was replaced by a conventional connection of the battery in one group. Data of analytical monitoring of good quality for almost 40 months (May 1987 to Aug. 1990) are available. Achievements: The project was very successful despite of various modifications and improvements (replacement of inverter and charge controller; use of 25 new energy saving lights) that had to be made during the six years of operation. The application of energy saving dc lights reduced the lighting consumption to 50 per cent - Optimisation by a special, new inverter and by a new charge controller raised the average solar fraction from 65 per cent to 91 per cent ... Prime Contractor: Fraunhofer Gesellschaft zur Förderung der Angewandten Forschung e.V. - FhG; München; Germany.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Flüssiggas ? Propan ? Freiburg ? München ? Lack ? Photovoltaikanlage ? Batteriespeicher ? Elektrizität ? Stromversorgung ? Elektronik ? Messeinrichtung ? Solarzelle ? Wärmeversorgung ? Wohngebäude ? Bundesrepublik Deutschland ? Elektrizitätsverbrauch ? Selbstversorgung ? Solartechnik ? Ökologisches Bauen ? Batterie ? Gasförmiger Stoff ? Gebühr ? Minderungspotenzial ? Daten ? Konsum ? Wirtschaftlichkeit ? Energieeinsparung ? Modul ? Motor ? Energietechnik ? Energie ? Haushaltsgerät ? Angewandte Wissenschaft ? Jahreszeit ? Produktdesign ? Technische Aspekte ? Umweltfreundliche Technologie ? Energiespeicherung ?
Region: Bayern
Bounding box: 12.53381° .. 12.53381° x 47.795° .. 47.795°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1984-11-01 - 1989-12-31
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