Proceedings chapter
Open access

Large Solar Assisted Heat Pump Systems in Collective Housing: In-situ Monitoring Results for Summer Season

Presented at Freiburg (Germany), September 23-25, 2013
  • Energy Procedia; 48
Publication date2014

This article presents the behavior of an existing system combining solar collectors and heat pumps at large scale (10'000 living m², more than 1'000 m² solar collectors) for space heating and domestic hot water production, focusing on summer period. Ongoing detailed monitoring enables to measure its energy performance. The monitoring results for 2012 show a system SPF of 2.9 (2.6 in winter and 4.4 in summer). The direct solar fraction in summer is lower than 50%, which is low considering the oversizing of the solar collector area for domestic hot water production. The high domestic hot water demand (􀁡50 kWh/m²/yr whereas the usual value is around 20) can partly explain this low value, but other factors should also be considered. The results presented in this article are part of a research project aiming to assess the relevance of the concept of coupling solar thermal and heat pumps in various types of building (especially existing buildings with low efficient thermal envelope).

  • Combined solar thermal and heat pump system
  • Large scale
  • Collective housing
  • Heating and domestic hot water production
  • Summer behavior
  • Experimental results
Citation (ISO format)
DE SOUSA FRAGA, Carolina et al. Large Solar Assisted Heat Pump Systems in Collective Housing: In-situ Monitoring Results for Summer Season. In: SHC 2013, International Conference on Solar Heating and Cooling for Buildings and Industry. Freiburg (Germany). [s.l.] : Elsevier, 2014. p. 1086–1095. (Energy Procedia) doi: 10.1016/j.egypro.2014.02.123
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