Results 21 to 30 of about 204,167 (205)
Status and Outlook for Research on Geothermal Heating Technology
Zhileng xuebao, 2021 Geothermal energy is widely used in building heating owing to its stability, large reserves, and wide distribution. Beginning from the classification of geothermal energy heating technology, this paper elaborates on the basic concepts, development ...
Wang Fenghao +6 more
doaj +2 more sources
Energy Reports, 2022 Developing shallow geothermal energy with borehole heat exchangers helps energy supply and CO2 emission reduction. This paper comprehensively investigates the influencing factors on heat transfer efficiency of a single borehole heat exchanger based on ...
Zongjun Gao +7 more
doaj +1 more source
Energy Reports, 2021 Southeast Asian countries have experienced fast economic growth for several decades. This rapid growth has been accompanied by an increased energy demand per capita. Ground source heat pumps could be a solution to improve energy efficiency.
Arif Widiatmojo +8 more
doaj +1 more source
Analysis of Enhanced Heat Transfer Characteristics of Coaxial Borehole Heat Exchanger
Processes, 2022 Coaxial borehole heat exchangers provide a practical method for geothermal energy extraction, but heat transfer efficiency is low. In order to address this problem, three coaxial borehole heat exchangers with vortex generators, based on the enhanced heat
Lin Sun +3 more
semanticscholar +1 more source
Energies, 2022 The purpose of the present work was to determine the thermal performance of borehole heat exchangers, considering the influences of their geometric configurations and the thermophysical properties of the soil, grout and pipe wall material.
Tangnur Amanzholov +9 more
doaj +1 more source
Geothermal Energy, 2022 Closed-loop deep borehole heat exchanger (DBHE) systems for producing heat from geothermal sources have the advantage that the heat transfer fluid is contained within the loop.
Qin Chong, Jingyi Wang, I. Gates
semanticscholar +1 more source
Influence of sustainable load imbalance ratio of heat exchanger of medium-shallow borehole
Youqicang pingjia yu kaifa, 2022 The heat exchanger of medium-shallow borehole which have a deeper depth than the traditional ground source heat pump system and can sustain a notable load imbalance ratio and widen the application scope of geothermal energy.
ZHANG Tian'an +5 more
doaj
Heat transfer character of deep multi-borehole under different geothermal recovery period
Energy Reports, 2023 The deep-borehole coaxial heat exchanger (DBCHE) can utilize mid-deep geothermal energy steadily. However, most studies of DBCHE were based on a single well; with the growth of building heating area, the applications such as multi-borehole collaborative ...
Feilong Chen, Yujie Bai
doaj +1 more source
Numerical Analysis of Enhanced Conductive Deep Borehole Heat Exchangers [PDF]
Sustainability, 2021 Geothermal energy is a reliable and mature energy source, but it represents less than 1% of the total renewable energy mix. While the enhanced geothermal system (EGS) concept faces technical validation challenges and suffers from public acceptance issues, the development of unconventional deep-well designs can help to improve their efficiency and ...
Theo Renaud +4 more
openaire +4 more sources
Mathematical modelling of thermal and flow processes in vertical ground heat exchangers
Chemical and Process Engineering, 2017 The main task of mathematical modelling of thermal and flow processes in vertical ground heat exchanger (BHE-Borehole Heat Exchanger) is to determine the unit of borehole depth heat flux obtainable or transferred during the operation of the installation.
Pater Sebastian +1 more
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