Objective A 300 m2 office building is to be heated and cooled by means of an electric heat pump coupled with an energy roof and daily storages. As compared with a traditional installation (gas boiler and refrigeration plant), the expected energy balance is as follows :- gas savings : 4.416 Nm3 (39 MWh)- additional electricity :10.5 MWh- primary energy savings : 0.7 TOE/yearThe expected payback time is 11.4 years.Two measuring phases took place in 1986 and 1987-1988. A complete measuring campaign during a whole year was planned but could not be achieved because of some alterations of the plant, modifications in the building's use and some technical difficulties.The installation was complicated, difficult to control, and the energy consumption of the auxiliaries was very high. The expected energy savings were not reached.The plant is composed of : - a 2 x 120 m2 solar roof (polyethylen pipes)- a phase change storage (2 x 1.5 m3)- an electric driven heat pump (model : Stiebel-Eltron WPE 34)- ventilo-convectors for space cooling and heating- a sensible heat storage (2 x 2.65 m3)- a cooling tower.The heat pump loads the storages nightly, following a timing function of the outside temperature. Highest priority can be choosen for heating or cooling. When the lowest priority storage reaches the full load level, the system shifts either on the energy roof either on the cooling tower. If, because of a specially high demand, the energy load of one storage falls below a low level limit, the heat pumps starts up to cover the peak load.Ambiant temperature is controlled by the fan coils regulation which takes energy out the appropriate storage. Programme(s) ENG-ENALT 2C - Programme (EEC) of demonstration projects relating to the exploitation of alternative energy sources and to energy saving and the substitution of hydrocarbons, 1983-1985 Topic(s) 3.1 - BUILDINGS Call for proposal Data not available Funding Scheme DEM - Demonstration contracts Coordinator FABRICOM AIR CONDITIONING SA EU contribution No data Address RUE DU MONTENEGRO 138-144 1060 Bruxelles Belgium See on map Total cost No data
