Abstract
Combining heat pumps (HP) with other renewables, e.g. solar thermal collectors, photovoltaics and energy
storage systems can contribute to the growth of future zero emission societies. This article investigates HP
integration for a real case-study system in Norway, which supplies a small neighborhood with energy for
heating and cooling. The main components of the case-study system are heat pumps, plate heat exchangers,
flat plate solar collectors, water storage tanks and borehole thermal energy storage. Several possibilities for
integrating HPs with natural working fluids into the case-study system were evaluated. Dynamic simulations
based on the modelling language Modelica were conducted to analyze the performance of the component and
system models for thermal energy supply.
Keywords: Heat pumps, Natural working fluids, Integrated energy system, Modelica.
storage systems can contribute to the growth of future zero emission societies. This article investigates HP
integration for a real case-study system in Norway, which supplies a small neighborhood with energy for
heating and cooling. The main components of the case-study system are heat pumps, plate heat exchangers,
flat plate solar collectors, water storage tanks and borehole thermal energy storage. Several possibilities for
integrating HPs with natural working fluids into the case-study system were evaluated. Dynamic simulations
based on the modelling language Modelica were conducted to analyze the performance of the component and
system models for thermal energy supply.
Keywords: Heat pumps, Natural working fluids, Integrated energy system, Modelica.