D2.3 Design principles and test result of multisource heat pumps with high COP DHW

This report explains the design principles and shows test results for a multisource heat pump for a PEB building. The design requirements lie on designing and sizing of heat pumps internal components (evaporator, condenser heat exchangers, source and supply pumps, expansion valve etc.). The design needs to be compatible with deep boreholes and multiple sources. The heat pump also needs to have IoT capabilities for remote support and cloud-based optimisation. Two different heat pump compressor technologies are successfully developed: reciprocating (piston) compressor and enhanced vapor injection (EVI) tandem compressor system.

Publication Date: 26 Nov 2020

Author: Gebwell Oy