Performance of a reversible heat pump/organic Rankine cycle unit coupled with a passive house to get a positive energy building |
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Authors: | Olivier Dumont Carolina Carmo Valentin Fontaine François Randaxhe Sylvain Quoilin Vincent Lemort |
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Affiliation: | 1. Thermodynamics and Energetics Laboratory, Chemin des chevreuils, 7 B49, 4000 Liege, Belgium;2. Department of Energy Technology, Aalborg University, Aalborg, Denmark |
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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. |
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Keywords: | heat pump organic Rankine cycle positive energy building dynamic simulation annual performance |
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