Abstract
This paper presents an innovative technology that can be used to deliver more renewable electricity production than the total electrical consumption of a building while covering the heat demand on a yearly basis. The technology concept uses a heat pump (HP), slightly modified to revert its cycle and generate electricity, coupled to a solar thermal collector roof. This reversible HP/organic Rankine cycle unit presents three operating modes: direct heating, HP and organic Rankine cycle. This work focuses on describing the dynamic model of the multi-component system followed by a techno-economic analysis of the system under different operational conditions. Sensitivity studies include: building envelope, climate, appliances, lighting and heat demand profiles. It is concluded that the HP/ORC unit can turn a single-family house into a PEB under certain weather conditions (electrical production of 3012 kWh/year and total electrical consumption of 2318 kWh/year) with a 138.8 m2 solar roof in Denmark.
Original language | English |
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Journal | Journal of Building Performance Simulation |
Volume | 11 |
Issue number | 1 |
Pages (from-to) | 19-35 |
ISSN | 1940-1493 |
DOIs | |
Publication status | Published - 2018 |
Keywords
- Heat pump
- Organic Rankine cycle
- Positive energy building
- Dynamic simulation
- Annual performance