24 June 2014

SIMULATION AND ANALYSIS OF DEMAND SIDE MANAGEMENT EFFECTS ON OPERATING BEHAVIOUR AND EFFICIENCY OF HEAT PUMP SYSTEMS


Increasing variable renewable electricity generation in Germany challenges the German electricity supply in terms of mismatch between supply and demand as well as grid capacity. Increasing the flexibility of electricity demand is a suitable measure to provide reliable future energy supply. Within the scope of Demand Side Management (DSM) heat pumps are able to contribute in terms of demand flexibility (Nabe, Hasche et al. 2011). Currently over
500,000 electrical compression heat pumps (HP) provide a potential for DSM in Germany with a positive market trend (Gorris, Stawiarski et al. 2011). Whereas static load shedding for
heat pumps is state-of-the-art, concepts for dynamic load shifting still need to be developed. This simulation study has been performed to examine the impact of a smart heat pump
control in a single family house regarding efficiency and potential for operating time optimization. To adapt the operating time the set temperature for both of the implemented buffer storages (room heating and domestic water heating) is raised. The smart control is influenced by a residual load based external signal. Grid stability and grid capacity are not focused within the present study.