IGGCAS OpenIR  > 页岩气与地质工程院重点实验室
Numerical investigation on the performance, sustainability, and efficiency of the deep borehole heat exchanger system for building heating
Chen, Chaofan1,2; Shao, Haibing1,3; Naumov, Dmitri1; Kong, Yanlong4; Tu, Kun5,6; Kolditz, Olaf1,2
2019-07-03
Source PublicationGEOTHERMAL ENERGY
ISSN2195-9706
Volume7Issue:1Pages:26
AbstractIn densely inhabited urban areas, deep borehole heat exchangers (DBHE) have been proposed to be integrated with theheat pump in order to utilize geothermal energy for building heating purposes. In this work, a comprehensive numerical model was constructed with the OpenGeoSys (OGS) software applying the dual-continuum approach. The model was verified against analytical solution, as well as by comparing with the integrated heat flux distribution. A series of modeling scenarios were designed and simulated in this study to perform theDBHE system analysis and to investigate the influence ofpipe materials, grout thermal conductivity, geothermal gradient, soil thermal conductivity, and groundwater flow. It was found that the soil thermal conductivity is the most important parameter for the DBHE system performance. Both thermally enhanced grout and thethermally insulated inner pipe will elevate the outflow temperature of the DBHE. With an elevated geothermal gradient of 0.04 degrees C m(-1), the short-term sustainable specific heat extraction rate imposed on the DBHE can be increased to 150-200 W m(-1). The quantification of maximum heat extraction rate was conducted based on the modeling of 30-year-long operation scenarios. With astandard geothermal gradient of 0.03 degrees C m(-1), the extraction rate has to be kept below 125 W m(-1) in the long-term operation. To reflect the electricity consumption by circulating pump, the coefficient of system performance (CSP) was proposed in this work to better quantify the system efficiency. With the typical pipe structure and flow rate specified in this study, it is found that the lower limit of the DBHE system is at a CSP value of 3.7. The extended numerical model presented in this study can be applied to the design and optimization of DBHE-coupled ground source heat pump systems.
KeywordDeep borehole heat exchanger system Performance Sustainability Temperature recovery ratio Coefficient of system performance (CSP)
DOI10.1186/s40517-019-0133-8
Funding OrganizationGerman Federal Ministry of Economic Affairs and Energy (BMWi) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC)
WOS KeywordGEOTHERMAL-ENERGY ; QUANTIFICATION ; CAPACITY ; DESIGN ; MODELS ; FIELD
Language英语
Funding ProjectGerman Federal Ministry of Economic Affairs and Energy (BMWi)[03ET6122B] ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation[727550] ; China Scholarship Council (CSC)
Funding OrganizationGerman Federal Ministry of Economic Affairs and Energy (BMWi) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; German Federal Ministry of Economic Affairs and Energy (BMWi) ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; GEMex project - European Union's Horizon 2020 programme for Research and Innovation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC)
WOS Research AreaEnergy & Fuels ; Geology
WOS SubjectEnergy & Fuels ; Geosciences, Multidisciplinary
WOS IDWOS:000473739700002
PublisherSPRINGEROPEN
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/92672
Collection页岩气与地质工程院重点实验室
Corresponding AuthorShao, Haibing
Affiliation1.UFZ Helmholtz Ctr Environm Res, Permoserstr 15, D-04318 Leipzig, Germany
2.Tech Univ Dresden, Appl Environm Syst Anal, D-01069 Dresden, Germany
3.Freiberg Univ Min & Technol, D-09599 Freiberg, Germany
4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
5.China Univ Min & Technol Beijing, Beijing 100083, Peoples R China
6.Univ Calif Riverside, Dept Environm Sci, Riverside, CA 92521 USA
Recommended Citation
GB/T 7714
Chen, Chaofan,Shao, Haibing,Naumov, Dmitri,et al. Numerical investigation on the performance, sustainability, and efficiency of the deep borehole heat exchanger system for building heating[J]. GEOTHERMAL ENERGY,2019,7(1):26.
APA Chen, Chaofan,Shao, Haibing,Naumov, Dmitri,Kong, Yanlong,Tu, Kun,&Kolditz, Olaf.(2019).Numerical investigation on the performance, sustainability, and efficiency of the deep borehole heat exchanger system for building heating.GEOTHERMAL ENERGY,7(1),26.
MLA Chen, Chaofan,et al."Numerical investigation on the performance, sustainability, and efficiency of the deep borehole heat exchanger system for building heating".GEOTHERMAL ENERGY 7.1(2019):26.
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