Conference Paper
Proceedings of BauSim Conference 2022: 9th Conference of IBPSA-Germany and Austria
SIMULATION AND MEASUREMENT RESULTS OF A SMART DISTRICT WITH CONNECTED HEAT PUMPS, PV AND CHP AS A MODEL PROJECT FOR DECARBONIZING EXISTING MULTIFAMILY BUILDINGS
SIMULATION AND MEASUREMENT RESULTS OF A SMART DISTRICT WITH CONNECTED HEAT PUMPS, PV AND CHP AS A MODEL PROJECT FOR DECARBONIZING EXISTING MULTIFAMILY BUILDINGS
Manuel Lämmle, Michael Kropp, Jakob Metz, Sebastian HerkelDOI: https://doi.org/10.26868/29761662.2022.48Abstract: Heat pumps are expected to play a central role in decarbonizing the building sector but face challenges in existing multifamily buildings. A smart district energy system connects heat pumps, PV modules and combined heat and power units to achieve an energyand cost-efficient operation. Dynamic simulations indicate that CO2 emissions can be reduced by 52 % compared to the current energy system, without energetic refurbishment of the buildings. A further CO2 reduction could be achieved by a larger share of heat pumps, however at the cost of a lower economic profitability. Measurement results from the first heating period are presented and discussed. The dual source heat pump system achieves a coefficient of performance of 3.1, after lowering the heating curve and optimizing a peak load mixing valve. On district level, a high level of electrical autarky (88 %) and selfsufficiency (81%) was achieved in January 2022 and electricity for the heat pumps was fully supplied by the CHP and PV systems. Paper: