Assainissement Minergie-P des immeubles « La Cigale » (GE) - Chauffage par pompes à chaleur solaires couplées à des stocks à changement de phase
Abstract from the ARAMIS database
As a possible alternative to air or geothermal driven heat pumps, solar assisted heat pumps have recently gained an important interest. Up to now, such systems have mainly been implemented on single family houses. This paper concerns the evaluation of a 330 kW solar assisted heat pump system with combined ice storage that was installed on “La Cigale”, a 19’000 m2 retrofitted multifamily building complex situated in Geneva.The presented results are based on a detailed monitoring campaign, covering a full year of operation, in real use condition.After presenting of the system concept, we analyze the system performance on hand of a detailed Sankey diagram(heat and electricity flows between the various production units, heat storages, and demand units).Despite a slightly higher heat demand than expected(66.3 kWh / m2), evenly shared between DHW and SH, the system performance is close to the projected value.The heat production(67.3 kWh / m2) is covered mainly by the HP(78 %), followed by direct solar heat(14 %) and backup by the gas boiler(8 %). Due to the important share of DHW(at 55°C), the seasonal performance factor of the HP turns out relatively low(3.0, including ancillary electricity), but the combination with direct solar heat rises this factor to 3.5.As a complement to the monitoring results, we present a simulation tool that was specifically developed for this type of application, and its validation against monitoring data, in terms of annual values and monthly profiles of the diverse energy flows.
| Start | End | Budget |
|---|---|---|
| 2013-11-15 | 2016-10-31 | Fr. 646’840 |