[en] In recent years, the possibility of combining photovoltaics (PV) and solar thermal collectors into one solar hybrid module (PVT-module) has been increasingly investigated. PVT-modules produce thermal and electrical energy at the same time. Since the efficiency of a photovoltaic module decreases with increasing temperature, the temperature of the heat transfer media is often limited to about 30 °C and the PVT-module is combined with a heat pump, which increases the temperature on the “warm side”. A common approach is to integrate the PVT-module directly as an evaporator in a heat pump system (PVT-direct).
This paper presents the development of a control strategy for a PVT-based CO2 heat pump that takes into account solar radiation, ambient temperature, wind speed, evaporator temperature and compressor power. The developed control strategy provides different operating modes depending on the solar radiation supply as well as the ambient temperature.
Disciplines :
Energy
Author, co-author :
Rullof, Johannes ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC)
Lambers, Klaus Jürgen; TH Köln > Cologne Institute for Renewable Energy (CIRE)
Blieske, Ulf; TH Köln > Cologne Institute for Renewable Energy (CIRE)
Hadji-Minaglou, Jean-Régis ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Scholzen, Frank ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
External co-authors :
yes
Language :
English
Title :
Development of a Control Strategy for a PVT-based CO2 Heat Pump
Publication date :
2018
Event name :
7th International Energy and Sustainability Conference (IESC)
Event place :
Köln, Germany
Event date :
17-05-2018 to 18-05-2018
Journal title :
Proceedings of 7th International Energy and Sustainability Conference (IESC)