Objetivo The project demonstrates the use of a solar assisted electric heat pump instead of gas or oil for the space and domestic hot water heating in a new office building in Brussels. 80 m2 unglazed collectors on metalic trays without insulation are used.The monitoring campaign is finished. The data acquisition system was based on a Hewlett Packard 3054 A.The most important results are:- The overall COP during the heating season 81/82: 2.09 during the heating season 82/83: 2.11The auxiliary energy for the heat pump system is important. Due to the relatively low COP the heat pump system did not save any primary fuel. Nevertheless, the decentralized installation and the cost saving for a Chimmey in the building leads to a relatively good overall cost effectivness of this system.- The use of unglazed collectors in winter to assist a heat pump yields 4 times more energy than glazed solar collectors. (400 KWH/100KWH)- The controlling unit was too sophisticated and failed to meet expectations.- Each heat pump had one major break-down. Their reliability must be improved.The newly constructed office building has a heated floor space of 450 m2. The calculated energy loss at - 10 deg C outside temperature is 45 KW. The solarized building is one of four with partly industrialized design which are monitored and the results of which are compared.The heating system consists of:- Unglazed solar copper collectors with a surface of 80 m2 (both sides 160 m2) fitted on the roof of the building. - Solar circuit filled with anti-freeze solution- Four cold water storage tanks of 1 000 l each linked with the collector field and the heat pump- Two electrically driven heat pumps, water-water, with a thermal output of 16 KW each, drawing the low temperature energy from the cold water storage- One insulated hot water buffer tank between the heat pump and the heating system- auxiliary heating linked to a near by boiler house via a plated heat exchanger (q max. = 53.2 KW)- Radiator heating with a maximum temperature of 65 deg C instead of 90 deg C in classig heating systems. The radiators are equipped with thermostatic valves.- The control unit (honeywell Micronik) is completely automatic and gears the heat pump in cascades according to the outside temperature- The air circulation is by gravity. The estimated air changing rate is 1 per hour.The losses from the near by boiler house to the new building were estimated as very important. A decentralized heating system saves therefore already an important part of the overall energy consumption. Programa(s) ENG-ENALT 1C - Programme (EEC) of financial support for projects to exploit alternative energy sources, 1979-1984 Tema(s) 3.1 - THERMAL Convocatoria de propuestas Data not available Régimen de financiación DEM - Demonstration contracts Coordinador SUNERGIE Aportación de la UE Sin datos Dirección TECNOSUD PB 434 66004 Perpignan Francia Ver en el mapa Coste total Sin datos
