Cited by Short-cycle borehole thermal energy storage: Impact of thermal cycle duration on overall performance

Regulating geofluid-circulation surrounding a dual-branch well to improve geothermal production of downhole heat exchanger DOI

Sarah Ren,

Riyi Lin,

Hao Zheng

et al.

Applied Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 126475 - 126475

Published: April 1, 2025

Language: Английский

Citations

Investigating the Impact of Seasonal Heat Storage on the Thermal and Economic Performance of a Deep Borehole Heat Exchanger: A Numerical Simulation Study DOI

Boyan Meng, Yang Zhou, Wenwen Chen

et al.

Buildings, Journal Year: 2025, Volume and Issue: 15(9), P. 1575 - 1575

Published: May 7, 2025

Deep borehole heat exchanger (DBHE) is a clean and efficient technology that utilizes geothermal energy for building heating. However, continuous extraction from DBHE system can lead to its performance decline over time. In this paper, the seasonal storage of were simulated assess impact schemes on thermal economic performance. The numerical model was constructed based real project parameters validated using monitoring data. Simulation results indicate extracted after increases linearly with injected heat, enabling straightforward estimation input mitigate short-term attenuation DBHEs under varying durations. when same amount annually, still exhibited declining trend third year, suggesting improvements in could not be sustained long term. Furthermore, efficiency improves time as surrounding temperature gradually increases, reaching more than 27% 10 years all scenarios. For first time, an analysis conducted storage, revealing solar supplemental applied, levelized cost (LCOH) slightly higher base case without except cases where collector costs are excluded. Given modest improvements, recommended DBHEs, especially low-cost surplus readily available.

Language: Английский

Citations

Generic modelling to develop thermal yield nomograms for coaxial deep borehole heat exchangers (DBHE) DOI

David Banks, Christopher S. Brown, Isa Kolo

et al.

Quarterly Journal of Engineering Geology and Hydrogeology, Journal Year: 2024, Volume and Issue: 57(3)

Published: May 21, 2024

Numerical modelling of coaxial deep borehole heat exchangers (DBHEs) can be resource-intensive. Simpler, transparent analytical models and nomograms would valuable to developers geologists for evaluating thermal output. In this paper, Beier’s published computational model was used produce geothermal yield by systematically varying the DBHE depth rock conductivity, while assuming two generic simplified designs, a gradient 25°C km −1 fluid circulation rate 5 l s . Continuous 25 year yields from 1000 m range 27.3 54.8 kW conductivities 1.6–3.6 W K For 3000 DBHE, they 165 281 kW. Effective resistance ( R b,eff ) increases strongly as due internal transfer between upflow downflow elements. Simulations correspond well with results industry-standard Earth Energy Designer software shallow 200 BHE. They modestly underestimate OpenGeoSys numerical modelled 2–4% in 1000–3000 m. Modelled temperature evolution closely approximates an ‘line source’ approach, implying that simpler approaches are plausible simulation. Future research should focus on methods forward quantification

Language: Английский

Citations

Decarbonising well-insulated buildings in a warming climate: The case of adaptive thermal comfort with geothermal space heating DOI

Hui Ben, Christopher S. Brown, Isa Kolo

et al.

Energy and Buildings, Journal Year: 2024, Volume and Issue: 319, P. 114466 - 114466

Published: June 28, 2024

Buildings contribute to 40% of global energy demand and are responsible for a third CO2 emissions. Strategies decarbonise buildings are, therefore, crucial reaching the net-zero emissions targets by most countries in world. This study investigates feasibility decarbonising well-insulated with current future weather scenarios applying adaptive thermal comfort strategy combination closed-loop deep geothermal system. An office building has been chosen as case because comprehensive sensor system installed which allows detailed data extraction analysis. The results show that building's heating cooling can be reduced 51% using an approach, while this decreases 45% 2080 under warming climate. Combined satisfy 50% at present when combined intermittent storage scenarios, 5 borehole heat exchangers (DBHEs) would required meet all directly. In conclusion, shows DBHE approach presents innovative low-cost opportunity significantly lower carbon

Language: Английский

Citations

Study on improving heat extraction capacity of borehole heat exchanger by forced convection of groundwater DOI

Yuzhe Jia,

Guanghui Zhao, Tao Liu

et al.

Renewable Energy, Journal Year: 2024, Volume and Issue: 237, P. 121809 - 121809

Published: Nov. 4, 2024

Language: Английский

Citations

Short-Cycle Borehole Thermal Energy Storage: Impact of Thermal Cycle Duration on Overall Performance DOI

Thibaut Desguers, Christopher S. Brown, Isa Kolo

et al.

Published: Jan. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

Citations

Optimization of Borehole Thermal Energy Storage Systems Using a Genetic Algorithm DOI

Michael Tetteh, Liangping Li,

M.G. Minnick

et al.

Mathematical Geosciences, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

Language: Английский

Citations

Seasonal energy extraction and storage by deep coaxial borehole heat exchangers in a layered ground DOI

Ctirad Matyska,

Eliška Zábranová

Renewable Energy, Journal Year: 2024, Volume and Issue: 237, P. 121530 - 121530

Published: Oct. 16, 2024

Language: Английский

Citations

Decarbonising heating and cooling using temperature setback and geothermal energy DOI

Hui Ben, Sara Walker, Christopher S. Brown

et al.

Journal of Physics Conference Series, Journal Year: 2023, Volume and Issue: 2600(2), P. 022015 - 022015

Published: Nov. 1, 2023

Abstract The lion’s share of buildings’ energy consumption is used for maintaining a thermally comfortable indoor environment. Strategies reducing heating and cooling demand can thus be crucial buildings to achieve net zero. This research aims investigate the extent which an occupancy-based temperature setback strategy geothermal supply decarbonise office building. objectives include: 1) exploring optimal maximum savings, both in present time under future climate scenarios, 2) evaluating borehole meet building’s demand. outcome shows that coupled with by around half. As overall building demand, make reduction over tenth while minimum fifth.

Language: Английский

Citations

Effects of Boundary Conditions on Performance Prediction of Deep-Buried Ground Heat Exchangers for Geothermal Energy Utilization DOI

Zhendi Ma,

Siyu Qin,

Y.P. Zhang

et al.

Energies, Journal Year: 2023, Volume and Issue: 16(13), P. 4874 - 4874

Published: June 22, 2023

An accurate prediction for deep-buried ground heat exchangers (DBGHEs) is the premise efficient utilization of geothermal energy. Due to complexity geological composition spanning thousands meters, configuration boundary conditions plays a critical role in evaluating DBGHE thermal performance. This paper proposed three-dimensional model full-scale involving both conductive and convective transfer aquifuge aquifer layers. The constant inlet temperature heating power boundaries domain, surface–bottom flux rock-soil domain were examined. It was found that differences performance caused by different closely related system’s operating time. relative extraction amount average borehole 2000 m two on 30th day were, respectively, 19.5% 18.3%, while these 120th decreased 8.4% 9.9%, respectively. more appropriate than condition estimating effects DBGHE. For results showed under 12.6%–13.6% higher boundary. Particularly, when considering velocity change groundwater aquifer, difference increments types can reach 26.6% day. also influence radius at end season hardly affected either or conditions.

Language: Английский

Citations