Simulation and Monitoring Results of Two MFHs in PH Standard with Heat Pump, Solar Thermal and PV
Abstract
In the city of Innsbruck, the project Vögelebichl of the social housing company Neue Heimat Tirol (NHT), consists of two multi-family houses (MFH) in Passive House (PH) Standard and aims at operation with minimum CO2 emissions for heating and domestic hot water (DHW) preparation. Net zero energy building (NZEB) was the goal of NHT for this project. The heat emission system, a floor heating with very low flow temperature, together with very well insulated heat distribution network allows a high performance of the ground water sourced heat pump (HP). The separate DHW distribution with flat-wise fresh water preparation is also designed for minimum possible flow temperature. DHW preparation is covered by solar thermal (ST) to a large extend. The electricity demand of the HP should be covered as much as possible by on-site PV. The optimum configuration of ST and PV with respect to energetic and economic performance was determined by means of simulation in a previous study Ochs et al. 2014. This paper presents the technical details of the two MFHs, the hydraulic concept and monitoring results after the first two years of operation, and a monthly primary energy evaluation.