Open AccessInvestigations of speed controlled heat pumps for NZEB in IEA HPT Annex 49
Author(s) -
Lukas Rominger,
Carsten Wemhoener,
Simon Buesser
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1343/1/012078
Subject(s) - heat pump , sizing , hybrid heat , air source heat pumps , nuclear engineering , environmental science , mechanical engineering , automotive engineering , engineering , process engineering , chemistry , heat exchanger , organic chemistry
Speed controlled heat pumps are entering more and more the heat pump markets for space heating and domestic hot water (DHW) applications. In this study the design and control of speed controlled air-to-water heat pumps in net zero energy buildings are investigated by simulations of a single family house. The results confirm an increase in efficiency by using a speed controlled heat pump compared to an on/off controlled heat pump both in heating mode and in DHW mode. Further on, the correct sizing and control of a speed controlled heat pump is also important to reach a high efficiency.