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Experimental analysis of a ground source heat pump in a residential installation after two years in operation

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  • Aira, Roberto
  • Fernández-Seara, José
  • Diz, Rubén
  • Pardiñas, Ángel Á.

Abstract

An experimental analysis was carried out in an installation with inverter operated ground source heat pump (GSHP) used for space heating with low temperature radiators, domestic hot water (DHW) production and pool heating at a single-family house during two years. The percentage contribution of each of the modes of operation are heating mode (86.5% on average) followed by pool heating (9.8% on average) and DHW production (3.7% on average). In heating mode, it was shown that the supplied temperature in the heating circuit that yields the best performance is 50 °C, since it is the lowest temperature at which the heat pump operates continuously. This work contributes to the literature with a database of actual and continuous data for 2 years. It includes the power consumption of the heat pump, the behaviour of the borehole for 2 years and the number of starts/stops and times of operation of the heat pump in each operating mode. COPs and SPFs have also been determined. During the first year the average SPF is 3.94 in heating mode, 3.24 in DHW mode and 4.11 in pool mode. In the second year 3.39 in heating mode, 3.21 in DHW mode and 4.18 in pool mode.

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  • Aira, Roberto & Fernández-Seara, José & Diz, Rubén & Pardiñas, Ángel Á., 2017. "Experimental analysis of a ground source heat pump in a residential installation after two years in operation," Renewable Energy, Elsevier, vol. 114(PB), pages 1214-1223.
    • Handle: RePEc:eee:renene:v:114:y:2017:i:pb:p:1214-1223
    DOI: 10.1016/j.renene.2017.07.099
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