Modelling of heat pumps, controller for space and water heating

Rapport, 2024

An increase in the share of electricity production from intermittent sources of energy and reduction in the share of fossil fuel based synchronous generators, creates a demand for flexible resources. One such flexible resource is a heating system equipped with a heat pump. In Sweden, a majority of the electric energy consumption takes place in the residential and service sector. Furthermore in the residential sector, the per capita consumption in single family houses are higher compared to multi family dwellings. Also, around half of the consumption in single family houses is from heating systems and these systems are generally equipped with heat pumps. This indicates the potential of heating systems to act as flexible resources. The heat pumps used in single family houses provide both space and water heating, with a priority set for water heating. To use the heating system as a flexible load, it is important to know the electric power consumption by the heat pump while operating at different conditions. Furthermore, flexibility also depends on the control action of space and water heating. Thus, with this background, the main aim of this report is to, describe the detailed modelling of a heat pump, controller design for space and water heating.