Results 1 to 10 of about 448 (163)

Improved Analysis of Borehole Heat Exchanger Performance

open access: yesEnergies, 2023
This paper provides recommendations for improved analyses of the performance of ground-coupled heat pumps. Most research on ground-coupled heat pumps focuses on improving the performance of borehole heat exchangers (BHE) and reducing system costs ...
Lucija Magdic, Tea Zakula, Luka Boban
doaj   +2 more sources

Thermal Performance Analysis on the Seasonal Heat Storage by Deep Borehole Heat Exchanger with the Extended Finite Line Source Model

open access: yesEnergies, 2022
Deep borehole heat exchanger is promising and competitive for seasonal heat storage in the limited space underground with great efficiency. However, seasonal heat storage performance of the essentially deep borehole heat exchanger reaching kilometers ...
Xiangxi Qin   +4 more
doaj   +1 more source

Comparison of Conventional and Variable Borehole Heat Exchangers for Use in a Desiccant Assisted Air Conditioning System

open access: yesEnergies, 2021
The objective of this work is to analyze a gas injection borehole heat exchanger coupled with a desiccant assisted air conditioning system during cooling and heating operation.
Finn Richter   +4 more
doaj   +1 more source

Study on the Influence of Borehole Heat Capacity on Deep Coaxial Borehole Heat Exchanger [PDF]

open access: yesSustainability, 2022
Based on a semi-analytical model established previously for heat transfer in coaxial borehole heat exchangers, the influences of the heat capacities of different parts of the borehole (fluid, pipes and grout) on the performance of deep coaxial borehole heat exchanger (DCBHE) are analyzed.
Wang, Changlong   +4 more
openaire   +1 more source

Study on an advanced borehole heat exchanger for ground source heat pump operating in volcanic island: Case study of Jeju island, South Korea

open access: yesFrontiers in Built Environment, 2022
This paper presents an advanced borehole heat exchanger that has been developed in order to apply a ground source heat pump to a volcanic island where the existing borehole heat exchangers are inapplicable by local ordinance.
Jong Woo Kim   +6 more
doaj   +1 more source

Overview of solutions to improve efficiency of ground source heat pump system [PDF]

open access: yesYouqicang pingjia yu kaifa, 2023
Shallow geothermal energy, with applications ranging from road snow melting and deicing to building heating/cooling, primarily utilizes closed-loop vertical buried pipes for resource exploitation.
ZHANG Yuping, YANG Xiao, LIU Jun, LIU Boyang, TANG Fujiao, TAN Yiqiu
doaj   +3 more sources

Simulation Model for Borehole Heat Exchangers [PDF]

open access: yesLinköping Electronic Conference Proceedings, 2018
Abstract Seasonal thermal energy storage (STES) offers a solution to address the mismatch between production and consumption by storing the produced excess heat for later use. Borehole heat exchangers (BHEs) are one of the sensible STES technologies. In this paper, a long-term simulation model for BHEs was developed.
Hietaharju, P. (Petri)   +1 more
openaire   +2 more sources

Uncertainty quantification of borehole heat exchanger design length based on a global sensitivity analysis [PDF]

open access: yesE3S Web of Conferences, 2023
Ground heat exchangers are essential components of ground-source heat pump systems. One of the most-used ground heat exchanger types is a borehole heat exchanger (BHE).
Shin Euntak   +3 more
doaj   +1 more source

Effective Thermal Conductivity and Borehole Thermal Resistance in Selected Borehole Heat Exchangers for the Same Geology

open access: yesEnergies, 2022
Investigating the constructions of borehole heat exchangers with high efficiency (unit heat transfer between the heat carrier and ground) is important. One of the means to improve efficiency is the use of the most efficient construction of the borehole ...
Tomasz Sliwa   +3 more
doaj   +1 more source

Investigation of the Heat Transfer Performance of Multi-Borehole Double-Pipe Heat Exchangers in Medium-Shallow Strata

open access: yesEnergies, 2022
Just as the double-pipe heat exchanger is being utilized in an increasing number of applications, its research content is also deepening. For this paper, based on the air-conditioning cold and heat source project of a building in Handan, Hebei Province ...
Wenjing Li   +5 more
doaj   +1 more source

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