24 June 2014
In near zero energy buildings (nZEB) the space heating demand will decrease and the domestic hot water (DHW) demand will account for a larger share of the total energy use.
This requires a new generation heat pump systems with lower capacity, lower price and performance to cope with these conditions. The challenge is to develop a system concept that could provide a competitive Life Cycle Cost (LCC) to the end consumer. This paper aims at describing two system concepts including a single family and a multifamily nZEB where heat pump prototypes have been developed for. The developed system concepts and
prototypes have been assessed from an energy savings point of view as well as from an LCC point of view. The results shows that heat pumps can be cost effective solutions for single family as well as multifamily nZEB but that future prices for: electricity, district heating and pellet will be important for the competitiveness of the heat pump systems assessed here.