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Large-capacity propane heat pumps for DHW production in residential buildings.
Number: pap. 1382
Author(s) : XU T., NAVARRO-PERIS E., PISCOPIELLO S., et al.
Summary
Paper published in poster form during the conference. Using heat pump technology to provide Space Heating (SH) and to produce Domestic Hot Water (DHW) for residential buildings has been widely applied during past decades. In this study, two scenarios adopting large-capacity propane heat pumps are defined and evaluated. These two scenarios, which are named after Scenario A and Scenario B respectively, provide SH and DHW either separately by two units or integrally by one unit. The COP1s of two scenarios are compared based on the simulation results from experimentally validated models. The results show that two scenarios have almost equal efficiency; the relative difference is within 6%. In the optimization analysis of Scenario B, varying DHW heating capacity produced by the desuperheater in the heat pump is modelled. The DHW demand ratio varies from approximately 9% to 20% with no detectable influences on the COP1. The corresponding COP1s and temperature profiles in the heat exchangers are demonstrated. The simulation results indicate that increasing DHW capacity in Scenario B can narrow down the temperature approach in the condenser and insignificantly improves the overall COP1s.
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Details
- Original title: Large-capacity propane heat pumps for DHW production in residential buildings.
- Record ID : 30023775
- Languages: English
- Source: 13th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
- Publication date: 2018/06/18
- DOI: http://dx.doi.org/10.18462/iir.gl.2018.1382
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Indexing
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Themes:
Residential heat-pumps;
Hydrocarbons - Keywords: Hot water; High capacity; Comparison; R290; Propane; Domestic heat pump; Residential building; Expérimentation; COP; Heating
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