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A heat pump system for simultaneous comfort floor cooling and domestic hot water.

Number: 0573

Author(s) : ZHU T., LIANG J., THORSEN J. E., GUDMUNDSSON O., ROHLFS W., ELMEGAARD B.

Summary

The benefit of ultra-low temperature district heating systems (ULTDH) is their low supply temperature, which increases the heat generation efficiency and significantly reduces the heat loss of the DH network. The present study proposed a dual-effect heat pump system, which in combination of the ULTDH network, fulfills both, comfort floor cooling/heating and domestic hot water (DHW) demands. Depending on the operation the ULTDH system is used as a heat source, DHW preparation, or as a heat sink in cooling operation mode. The application potential of the proposed heat pump unit used for comfort floor cooling has been validated. The cooling experimental tests were performed under designed conditions with fixed heat source temperature (22 ℃) and different heat sink temperatures, simulating either DHW preparation or delivering the surplus heat to the ULTDH network. The coefficient of performance (COP) of the dual-effect heat pump system varied from 2.22 to 2.81 in cooling mode, and from 3.0 to 3.4 in heating

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Pages: 11

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  • Original title: A heat pump system for simultaneous comfort floor cooling and domestic hot water.
  • Record ID : 30033277
  • Languages: English
  • Source: 14th IEA Heat Pump Conference 2023, Chicago, Illinois.
  • Publication date: 2023/05

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