Description: Das Projekt "20 kleine gasbeheizte Absorptions-Waermepumpen" wird vom Umweltbundesamt gefördert und von John Vaillant GmbH durchgeführt. Objective: An absorption heat pump (AHP) designed for heating small residential buildings was to be tested in practical operation. The test should prove the reliability and efficiency of this AHP and it should answer to the question whether the commercial use of the AHP will be possible or not. 15 units were planned to operate in single family houses and 5 units in the manufacturer's laboratory. General Information: The project started in January 1984 and ended in September 1986. It was executed in 4 stages: Stage 1 Modification of the prototype to a similar serial-construction Stage 2 Production of 15 AHPs Stage 3 Installation and taking into operation of 10 units in residential buildings in the Remscheid area and of 5 units at J. Vaillant GmbH Stage 4 Record and evaluation of measuring data, after-sales service, after the conclusion of the test the dismantling and examination of the AHPs The AHP was a gas-fired air-to-water heat pump using as agent NH3 and as solvent H2O. The nominal output was 12.5 kW at an outside temperature of - 5 degree of Celsius. and water temperatures of 56/42 degree of Celsius. In the case of higher heat demand, the AHP was cut off and a second heat generator took over the heating. The AHP and the second heater were provided with a common automatic control system allowing the automatic operation of the heating system and the continuous adjustment of the AHP's heat output depending on the real heat demand. Achievements: The 10 AHPs installed in residential buildings gave the following cumulative values: Operating time: 35,728 h Heating energy produced: 196,537 kWh Gas consumption, related to natural gas with a calorific value of 8.30 kWh/m3: 20,087 m3 Auxiliary electric power consumed: 14,735 kWh Based on these data, the average heating COP of all AHPs taken over the total operating time is 1.179. On the average, 73,6 per cent of the heating operation were covered by the AHP. As a matter of fact, with the individual AHPs, there were found considerable deviations from the average annual values, these deviations depending on the characteristics features of the installation and the individual requests of the users, f. ex. Heating COP: 0.928 - 1.360 Demand in auxiliary power: 0.266-0.489 kW Operating time quota: 50.9-98.7 per cent According to the individual data, the heating COP is the higher, the lower is adjusted the heating water flow temperature. The auxiliary power consumption which considerably influences the efficiency depends on the possible placing of the heat source air ducts and the water pipes connecting the AHP to the heating network. The field test confirmed the performance data of the laboratory tests. In addition the winter operating conditions brought a lot of suggestions for improving the control system. Last not least several technical defects were disclosed, which can be eliminated now by comparatively few additional expenditure. Economic aspects: The AHPs installed in residential buildings...
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Origin: /Bund/UBA/UFORDAT
Tags: Hirsch ? Ammoniak ? Brennstoff ? Einfamilienhaus ? Erdgas ? Öffentliches Gebäude ? Elektrische Leistung ? Lösungsmittel ? Wassertemperatur ? Wohngebäude ? Luftwärmepumpe ? Heizenergieverbrauch ? Absorption ? Alternative Energie ? Betriebsdaten ? Energieversorgung ? Gebäude ? Wärme ? Wärmeerzeugung ? Wärmepumpe ? Winter ? Gasförmiger Stoff ? Verbrauchsdaten ? Wärmeeffizienz ? Wärmebedarf ? Rückbau ? Messdaten ? Verfahrenstechnik ? Energieeinsparung ? Energietechnik ? Wasserleitung ? Energieverbrauch ? Anlagenüberwachung ? Wirkungsgrad ? Laborversuch ? Wasserströmung ? Jahresmittelwert ? Heiztechnik ? Brennwert ? Kontrollsystem ? Daten ? Versuchsanlage ? Anlagenbau ? Wirtschaftliche Aspekte ? Freilandversuch ? Anlagenbetrieb ? Heizung ? Prototyp ? renewable sources of energy ? Eignungsfeststellung ? Remscheid ?
Region: Nordrhein-Westfalen
Bounding boxes: 6.76339° .. 6.76339° x 51.21895° .. 51.21895°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1984-01-02 - 1986-09-15
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