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English

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

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

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).

Keywords
  • 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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