Study on Feasibility of Accumulating Solar Energy into Soil for Improving the Imbalance of Heat Injection and Extraction in GHP System

Kai Liu; Nan Wang; Wanlong Cai; Xinke Wang; Fenghao Wang; Bo Xiao

doi:10.1007/978-981-13-9528-4_26

Study on Feasibility of Accumulating Solar Energy into Soil for Improving the Imbalance of Heat Injection and Extraction in GHP System

Kai Liu
, Nan Wang
, Wanlong Cai
, Xinke Wang
, Fenghao Wang
, Bo Xiao

School of Human Settlements and Civil Engineering

China Northwest Architecture Design and Research Institute Co. Ltd.
Xi'an Jiaotong University
Meteorological Bureau of Xi'an City

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

Abstract

Geothermal heat pump system (GHP) is efficient to utilize renewable energy in cooling and heating of building. However, the major problem is that the coefficient of performance (COP) of GHPs will decay after a long-time operation because of the imbalanced energy injection into and extraction from the ground. It is an effective way to apply solar collectors in the GHPs to collect thermal energy in the non-heating season and deliver the heat into ground, which may relief the imbalance. In our research, a demo project of solar-assisted geothermal heat pump system (SAGHP) in a rural building in Xi’an was built up, which delivers hot water from solar collector into soil from September 1 to November 14, 2018. For analyzing the effectiveness of elevating the ground temperature, a TRNSYS model was established, verified by the measured data in the project, and served for simulating three systems, which including the SAGHPs without accumulating solar energy in soil, the SAGHPs with accumulating thermal energy in soil in summer, and the SAGHPs with accumulating thermal energy in soil in autumn. The comparison of systems showed the significance of thermal storage in Xi’an and the feasibility of thermal injection in autumn for solar collection for improving the heat imbalance of GHPs.

Original language	English
Title of host publication	Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Volume III
Subtitle of host publication	Buildings and Energy
Editors	Zhaojun Wang, Fang Wang, Peng Wang, Chao Shen, Jing Liu, Yingxin Zhu
Publisher	Springer
Pages	249-258
Number of pages	10
ISBN (Print)	9789811395277
DOIs	https://doi.org/10.1007/978-981-13-9528-4_26
State	Published - 2020
Event	11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Harbin, China Duration: 12 Jul 2019 → 15 Jul 2019

Publication series

Name	Environmental Science and Engineering
ISSN (Print)	1863-5520
ISSN (Electronic)	1863-5539

Conference

Conference	11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019
Country/Territory	China
City	Harbin
Period	12/07/19 → 15/07/19

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Ground source heat pump
Soil thermal storage
Solar energy
TRNSYS
The rural buildings

Access to Document

10.1007/978-981-13-9528-4_26

Cite this

Liu, K., Wang, N., Cai, W., Wang, X., Wang, F., & Xiao, B. (2020). Study on Feasibility of Accumulating Solar Energy into Soil for Improving the Imbalance of Heat Injection and Extraction in GHP System. In Z. Wang, F. Wang, P. Wang, C. Shen, J. Liu, & Y. Zhu (Eds.), Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Volume III: Buildings and Energy (pp. 249-258). (Environmental Science and Engineering). Springer. https://doi.org/10.1007/978-981-13-9528-4_26

Liu, Kai ; Wang, Nan ; Cai, Wanlong et al. / Study on Feasibility of Accumulating Solar Energy into Soil for Improving the Imbalance of Heat Injection and Extraction in GHP System. Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Volume III: Buildings and Energy. editor / Zhaojun Wang ; Fang Wang ; Peng Wang ; Chao Shen ; Jing Liu ; Yingxin Zhu. Springer, 2020. pp. 249-258 (Environmental Science and Engineering).

@inproceedings{332ccd65f43f433db1470c8972f986b3,

title = "Study on Feasibility of Accumulating Solar Energy into Soil for Improving the Imbalance of Heat Injection and Extraction in GHP System",

abstract = "Geothermal heat pump system (GHP) is efficient to utilize renewable energy in cooling and heating of building. However, the major problem is that the coefficient of performance (COP) of GHPs will decay after a long-time operation because of the imbalanced energy injection into and extraction from the ground. It is an effective way to apply solar collectors in the GHPs to collect thermal energy in the non-heating season and deliver the heat into ground, which may relief the imbalance. In our research, a demo project of solar-assisted geothermal heat pump system (SAGHP) in a rural building in Xi{\textquoteright}an was built up, which delivers hot water from solar collector into soil from September 1 to November 14, 2018. For analyzing the effectiveness of elevating the ground temperature, a TRNSYS model was established, verified by the measured data in the project, and served for simulating three systems, which including the SAGHPs without accumulating solar energy in soil, the SAGHPs with accumulating thermal energy in soil in summer, and the SAGHPs with accumulating thermal energy in soil in autumn. The comparison of systems showed the significance of thermal storage in Xi{\textquoteright}an and the feasibility of thermal injection in autumn for solar collection for improving the heat imbalance of GHPs.",

keywords = "Ground source heat pump, Soil thermal storage, Solar energy, TRNSYS, The rural buildings",

author = "Kai Liu and Nan Wang and Wanlong Cai and Xinke Wang and Fenghao Wang and Bo Xiao",

note = "Publisher Copyright: {\textcopyright} 2020, Springer Nature Singapore Pte Ltd.; 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 ; Conference date: 12-07-2019 Through 15-07-2019",

year = "2020",

doi = "10.1007/978-981-13-9528-4\_26",

language = "英语",

isbn = "9789811395277",

series = "Environmental Science and Engineering",

publisher = "Springer",

pages = "249--258",

editor = "Zhaojun Wang and Fang Wang and Peng Wang and Chao Shen and Jing Liu and Yingxin Zhu",

booktitle = "Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Volume III",

}

Liu, K, Wang, N, Cai, W, Wang, X, Wang, F & Xiao, B 2020, Study on Feasibility of Accumulating Solar Energy into Soil for Improving the Imbalance of Heat Injection and Extraction in GHP System. in Z Wang, F Wang, P Wang, C Shen, J Liu & Y Zhu (eds), Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Volume III: Buildings and Energy. Environmental Science and Engineering, Springer, pp. 249-258, 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019, Harbin, China, 12/07/19. https://doi.org/10.1007/978-981-13-9528-4_26

Study on Feasibility of Accumulating Solar Energy into Soil for Improving the Imbalance of Heat Injection and Extraction in GHP System. / Liu, Kai; Wang, Nan; Cai, Wanlong et al.
Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Volume III: Buildings and Energy. ed. / Zhaojun Wang; Fang Wang; Peng Wang; Chao Shen; Jing Liu; Yingxin Zhu. Springer, 2020. p. 249-258 (Environmental Science and Engineering).

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

TY - GEN

T1 - Study on Feasibility of Accumulating Solar Energy into Soil for Improving the Imbalance of Heat Injection and Extraction in GHP System

AU - Liu, Kai

AU - Wang, Nan

AU - Cai, Wanlong

AU - Wang, Xinke

AU - Wang, Fenghao

AU - Xiao, Bo

PY - 2020

Y1 - 2020

N2 - Geothermal heat pump system (GHP) is efficient to utilize renewable energy in cooling and heating of building. However, the major problem is that the coefficient of performance (COP) of GHPs will decay after a long-time operation because of the imbalanced energy injection into and extraction from the ground. It is an effective way to apply solar collectors in the GHPs to collect thermal energy in the non-heating season and deliver the heat into ground, which may relief the imbalance. In our research, a demo project of solar-assisted geothermal heat pump system (SAGHP) in a rural building in Xi’an was built up, which delivers hot water from solar collector into soil from September 1 to November 14, 2018. For analyzing the effectiveness of elevating the ground temperature, a TRNSYS model was established, verified by the measured data in the project, and served for simulating three systems, which including the SAGHPs without accumulating solar energy in soil, the SAGHPs with accumulating thermal energy in soil in summer, and the SAGHPs with accumulating thermal energy in soil in autumn. The comparison of systems showed the significance of thermal storage in Xi’an and the feasibility of thermal injection in autumn for solar collection for improving the heat imbalance of GHPs.

AB - Geothermal heat pump system (GHP) is efficient to utilize renewable energy in cooling and heating of building. However, the major problem is that the coefficient of performance (COP) of GHPs will decay after a long-time operation because of the imbalanced energy injection into and extraction from the ground. It is an effective way to apply solar collectors in the GHPs to collect thermal energy in the non-heating season and deliver the heat into ground, which may relief the imbalance. In our research, a demo project of solar-assisted geothermal heat pump system (SAGHP) in a rural building in Xi’an was built up, which delivers hot water from solar collector into soil from September 1 to November 14, 2018. For analyzing the effectiveness of elevating the ground temperature, a TRNSYS model was established, verified by the measured data in the project, and served for simulating three systems, which including the SAGHPs without accumulating solar energy in soil, the SAGHPs with accumulating thermal energy in soil in summer, and the SAGHPs with accumulating thermal energy in soil in autumn. The comparison of systems showed the significance of thermal storage in Xi’an and the feasibility of thermal injection in autumn for solar collection for improving the heat imbalance of GHPs.

KW - Ground source heat pump

KW - Soil thermal storage

KW - Solar energy

KW - TRNSYS

KW - The rural buildings

UR - https://www.scopus.com/pages/publications/85082989102

U2 - 10.1007/978-981-13-9528-4_26

DO - 10.1007/978-981-13-9528-4_26

M3 - 会议稿件

AN - SCOPUS:85082989102

SN - 9789811395277

T3 - Environmental Science and Engineering

SP - 249

EP - 258

BT - Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Volume III

A2 - Wang, Zhaojun

A2 - Wang, Fang

A2 - Wang, Peng

A2 - Shen, Chao

A2 - Liu, Jing

A2 - Zhu, Yingxin

PB - Springer

T2 - 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019

Y2 - 12 July 2019 through 15 July 2019

ER -

Liu K, Wang N, Cai W, Wang X, Wang F, Xiao B. Study on Feasibility of Accumulating Solar Energy into Soil for Improving the Imbalance of Heat Injection and Extraction in GHP System. In Wang Z, Wang F, Wang P, Shen C, Liu J, Zhu Y, editors, Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Volume III: Buildings and Energy. Springer. 2020. p. 249-258. (Environmental Science and Engineering). doi: 10.1007/978-981-13-9528-4_26

Study on Feasibility of Accumulating Solar Energy into Soil for Improving the Imbalance of Heat Injection and Extraction in GHP System

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

Other files and links

Fingerprint

Cite this