Publikasjoner og ansvarsområder
High-temperature heat pumps based on natural working fluids to produce district heating from industrial waste heat
Review of Vapour Compression Heat Pumps for High Temperature Heating using Natural Working Fluids
The use of high temperature heat pumps (HTHPs) operating with natural fluids has been shown to be a potential environmentally friendly solution to increase energy efficiency in industrial processes. Industrial processes release a significant amount of energy as low quality waste heat to the environm...
Annual energy performance of R744 and R410A heat pumping systems
This work compares the annual energy performance of heat pumping systems using R744 and R410A as refrigerant. Focus is the annual energy efficiency of R744 hybrid ground-coupled heat pumping system. The hybrid system uses both ambient air and ground as heat sinks in the cooling mode. This is importa...
A steady and quasi-steady state analysis on the CO2 hybrid ground-coupled heat pumping system
This article contains the steady and quasi-steady state analysis on a CO2 hybrid ground-coupled heat pumping system for warm climates. The hybrid system uses a combination of ambient air and ground boreholes as a heat sink for the cooling mode, while only the ground boreholes are used as a heat sour...