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

Tingting Zhu; Jierong  Liang; Jan Eric Thorsen; Oddgeir  Gudmundsson; Wilko Rohlfs; Brian Elmegaard

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

Tingting Zhu^*, Jierong Liang, Jan Eric Thorsen, Oddgeir Gudmundsson, Wilko Rohlfs, Brian Elmegaard

^*Corresponding author for this work

Heat Transfer and Thermodynamics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

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 mode. The cooling capacity ranged from 2.9 kW to 3.4 kW and heating capacity ranged from 3.8 kW to 4.4 kW.

Original language	English
Title of host publication	14th IEA Heat Pump Conference 2023
Publication status	Published - 15 May 2023
Event	14th IEA Heat Pump Conference 2023: Heat Pumps – Resilient and Efficient - Chicago, United States Duration: 15 May 2023 → 18 May 2023 Conference number: 14 https://www.hpc2023.org/

Conference

Conference	14th IEA Heat Pump Conference 2023
Country/Territory	United States
City	Chicago
Period	15/05/23 → 18/05/23
Internet address	https://www.hpc2023.org/

Keywords

2023 OA procedure

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A heat pump system for simultaneous comfort floor cooling and domestic hot waterFinal published version, 950 KBLicence: Taverne

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@inproceedings{9202acf32feb4f178f7ff8b856f95da6,

title = "A heat pump system for simultaneous comfort floor cooling and domestic hot water",

abstract = "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 mode. The cooling capacity ranged from 2.9 kW to 3.4 kW and heating capacity ranged from 3.8 kW to 4.4 kW. ",

keywords = "2023 OA procedure",

author = "Tingting Zhu and Jierong Liang and Thorsen, {Jan Eric} and Oddgeir Gudmundsson and Wilko Rohlfs and Brian Elmegaard",

year = "2023",

month = may,

day = "15",

language = "English",

booktitle = "14th IEA Heat Pump Conference 2023",

note = "14th IEA Heat Pump Conference 2023 : Heat Pumps – Resilient and Efficient ; Conference date: 15-05-2023 Through 18-05-2023",

url = "https://www.hpc2023.org/",

}

TY - GEN

T1 - A heat pump system for simultaneous comfort floor cooling and domestic hot water

AU - Zhu, Tingting

AU - Liang, Jierong

AU - Thorsen, Jan Eric

AU - Gudmundsson, Oddgeir

AU - Rohlfs, Wilko

AU - Elmegaard, Brian

N1 - Conference code: 14

PY - 2023/5/15

Y1 - 2023/5/15

N2 - 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 mode. The cooling capacity ranged from 2.9 kW to 3.4 kW and heating capacity ranged from 3.8 kW to 4.4 kW.

AB - 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 mode. The cooling capacity ranged from 2.9 kW to 3.4 kW and heating capacity ranged from 3.8 kW to 4.4 kW.

KW - 2023 OA procedure

M3 - Conference contribution

BT - 14th IEA Heat Pump Conference 2023

T2 - 14th IEA Heat Pump Conference 2023

Y2 - 15 May 2023 through 18 May 2023

ER -

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

Abstract

Conference

Keywords

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