Experimental investigation on a combined solar and ground source heat pump system for a single-family house: Energy flow analysis and performance assessment

Changxing Zhang; Elsabet Nielsen; Jianhua Fan; Simon Furbo; Qingqing Li

doi:10.1016/j.enbuild.2021.110958

Experimental investigation on a combined solar and ground source heat pump system for a single-family house: Energy flow analysis and performance assessment

Changxing Zhang^*, Elsabet Nielsen, Jianhua Fan, Simon Furbo, Qingqing Li

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

This paper presents experimental investigations on a combined solar and ground source heat pump (SGHP) system for a single-family house. The SGHP system was installed at the Lyngby campus of Technical University of Denmark with horizontal ground heat exchanger (HGHE). Detailed experiments were carried out on the system in 2019 under real weather conditions and the heating demand for domestic hot water (DHW) and space heating (SH). The focuses of the investigation are energy flow analysis and performance assessment on the SGHP system. The results showed that the yearly system seasonal performance factor of the SGHP system (SPF_SHP) was 2.8, and the maximum monthly SPF_SHP was up to 5.7 in April with the highest solar radiation. Directly utilized solar energy for the combi-storage was 500 kWh lower than the annual solar heat for charging the ground, and it accounted for 36.6% of annual heat input of the combi-storage, the rest of the heat was supplied by the heat pump system that consumed 84% of total electricity energy. Different from the large fluctuations of monthly solar fraction due to solar radiation, the monthly renewable heat fraction was within the range from 57% to 83%, and the yearly value was 65%.

Original language	English
Article number	110958
Journal	Energy and Buildings
Volume	241
ISSN	0378-7788
DOIs	https://doi.org/10.1016/j.enbuild.2021.110958
Publication status	Published - 2021

Bibliographical note

Funding Information:
This work was financially supported by Bjarne Saxhofs foundation, the Overseas Visiting Scholars Project of Shandong University of Science and Technology (2018), and the Natural Science Foundation of Shandong Province (ZR2020ME187).

Keywords

Combined solar and ground source heat pump system
Experiment
Renewable heat fraction
Seasonal performance factor
Solar fraction

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.enbuild.2021.110958

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Full text

Follow up on large scale storage in Denmark, Gram
Fan, J. (Project Participant), Furbo, S. (Project Participant), Perers, B. O. (Project Participant), Kong, W. (Project Participant) & Nielsen, E. N. N. (Project Participant)
Energiteknologisk Udviklings- og Demonstrationsprogram
01/01/2016 → 31/12/2018
Project: Research

Cite this

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title = "Experimental investigation on a combined solar and ground source heat pump system for a single-family house: Energy flow analysis and performance assessment",

abstract = "This paper presents experimental investigations on a combined solar and ground source heat pump (SGHP) system for a single-family house. The SGHP system was installed at the Lyngby campus of Technical University of Denmark with horizontal ground heat exchanger (HGHE). Detailed experiments were carried out on the system in 2019 under real weather conditions and the heating demand for domestic hot water (DHW) and space heating (SH). The focuses of the investigation are energy flow analysis and performance assessment on the SGHP system. The results showed that the yearly system seasonal performance factor of the SGHP system (SPFSHP) was 2.8, and the maximum monthly SPFSHP was up to 5.7 in April with the highest solar radiation. Directly utilized solar energy for the combi-storage was 500 kWh lower than the annual solar heat for charging the ground, and it accounted for 36.6% of annual heat input of the combi-storage, the rest of the heat was supplied by the heat pump system that consumed 84% of total electricity energy. Different from the large fluctuations of monthly solar fraction due to solar radiation, the monthly renewable heat fraction was within the range from 57% to 83%, and the yearly value was 65%.",

keywords = "Combined solar and ground source heat pump system, Experiment, Renewable heat fraction, Seasonal performance factor, Solar fraction",

author = "Changxing Zhang and Elsabet Nielsen and Jianhua Fan and Simon Furbo and Qingqing Li",

note = "Funding Information: This work was financially supported by Bjarne Saxhofs foundation, the Overseas Visiting Scholars Project of Shandong University of Science and Technology (2018), and the Natural Science Foundation of Shandong Province (ZR2020ME187). ",

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doi = "10.1016/j.enbuild.2021.110958",

language = "English",

volume = "241",

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T2 - Energy flow analysis and performance assessment

AU - Zhang, Changxing

AU - Nielsen, Elsabet

AU - Fan, Jianhua

AU - Furbo, Simon

AU - Li, Qingqing

N1 - Funding Information: This work was financially supported by Bjarne Saxhofs foundation, the Overseas Visiting Scholars Project of Shandong University of Science and Technology (2018), and the Natural Science Foundation of Shandong Province (ZR2020ME187).

PY - 2021

Y1 - 2021

N2 - This paper presents experimental investigations on a combined solar and ground source heat pump (SGHP) system for a single-family house. The SGHP system was installed at the Lyngby campus of Technical University of Denmark with horizontal ground heat exchanger (HGHE). Detailed experiments were carried out on the system in 2019 under real weather conditions and the heating demand for domestic hot water (DHW) and space heating (SH). The focuses of the investigation are energy flow analysis and performance assessment on the SGHP system. The results showed that the yearly system seasonal performance factor of the SGHP system (SPFSHP) was 2.8, and the maximum monthly SPFSHP was up to 5.7 in April with the highest solar radiation. Directly utilized solar energy for the combi-storage was 500 kWh lower than the annual solar heat for charging the ground, and it accounted for 36.6% of annual heat input of the combi-storage, the rest of the heat was supplied by the heat pump system that consumed 84% of total electricity energy. Different from the large fluctuations of monthly solar fraction due to solar radiation, the monthly renewable heat fraction was within the range from 57% to 83%, and the yearly value was 65%.

AB - This paper presents experimental investigations on a combined solar and ground source heat pump (SGHP) system for a single-family house. The SGHP system was installed at the Lyngby campus of Technical University of Denmark with horizontal ground heat exchanger (HGHE). Detailed experiments were carried out on the system in 2019 under real weather conditions and the heating demand for domestic hot water (DHW) and space heating (SH). The focuses of the investigation are energy flow analysis and performance assessment on the SGHP system. The results showed that the yearly system seasonal performance factor of the SGHP system (SPFSHP) was 2.8, and the maximum monthly SPFSHP was up to 5.7 in April with the highest solar radiation. Directly utilized solar energy for the combi-storage was 500 kWh lower than the annual solar heat for charging the ground, and it accounted for 36.6% of annual heat input of the combi-storage, the rest of the heat was supplied by the heat pump system that consumed 84% of total electricity energy. Different from the large fluctuations of monthly solar fraction due to solar radiation, the monthly renewable heat fraction was within the range from 57% to 83%, and the yearly value was 65%.

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KW - Experiment

KW - Renewable heat fraction

KW - Seasonal performance factor

KW - Solar fraction

U2 - 10.1016/j.enbuild.2021.110958

DO - 10.1016/j.enbuild.2021.110958

M3 - Journal article

AN - SCOPUS:85104093541

SN - 0378-7788

VL - 241

JO - Energy and Buildings

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M1 - 110958

ER -

Experimental investigation on a combined solar and ground source heat pump system for a single-family house: Energy flow analysis and performance assessment

Abstract

Bibliographical note

Keywords

UN SDGs

Access to Document

OpenUrl availability

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Projects

Follow up on large scale storage in Denmark, Gram

Cite this