Paper No 179 – Simulation-Based Eco-Economic Assessment Of Heat Pump Systems For Refurbishing All-Electric Non-Residential office building With Complex Energy Demand Structures – 13th IEA Heat Pump Conference, Jeju, Korea
Heat pumps (HP) are a key technology to reduce CO2 emissions in buildings. Yet, profitability of HP-based systems is often poor due to high electricity prices compared to gas prices. Consequently, HP-based systems in new non-residential buildings in Germany only accounted for 17 % in 2018 [1]. However, the German government intends to introduce carbon pricing which could increase HPs´ market penetration. To evaluate the profitability of all-electric systems in non-residential buildings, the energy system of an old military hospital, which is transformed into a technology and laboratory center called FUBIC, is designed. We create the building model and analyze the building´s thermal demand using Modelica. Based on this, a HPbased all-electric and a conventional supply scenario are modelled. As KPI, we calculate the annuity and CO2 emissions in both 2018 and 2030 based on three carbon pricing scenarios. Results show that, despite its lower emissions, HP-based system´s annuity is lower than that of the conventional scenario regardless of the carbon pricing scenario. The main cost drivers are the demand-related costs which can be decreased by advanced operating strategies.