Results 191 to 200 of about 210,641 (265)

Experimental investigations on solar heating/heat pump systems for single family houses [PDF]

, 2017
Andersen, Elsa, Perers, Bengt
core  

On freezing resistance of borehole heat exchangers

, 2015
Erol, Selcuk, François, Bertrand
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Analysis of heat extraction performance and long-term sustainability for multiple deep borehole heat exchanger array: A project-based study

Applied Energy, 2021
In the context of reducing carbon emission, Deep Borehole Heat Exchanger (DBHE) array has a large potential in extracting geothermal energy to provide building heating in densely populated urban areas.
Wanlong Cai, Fenghao Wang, Shuang Chen, Chaofan Chen, J. Liu, Jiewen Deng, O. Kolditz, H. Shao   +7 more
semanticscholar   +3 more sources

Heat extraction model and characteristics of coaxial deep borehole heat exchanger

Renewable Energy, 2021
Middle and deep geothermal resources are abundant and have the advantages of being clean, stable, and reliable. However, a widely recognised theoretical model of deep ground heat exchangers is currently lacking owing to the uncertainty of the underground
Ji Li, Wei Xu, Jian-feng Li, Shuai Huang, Zhaoai Li, Biao Qiao, Chun Yang, Deyu Sun, Guangqiu Zhang   +8 more
semanticscholar   +3 more sources

Borehole heat exchanger with nanofluids as heat carrier

Geothermics, 2018
Abstract This paper presents numerical study on the use of nanofluids to replace conventional ethylene glycol/water mixture as heat carrier in a BoreHole Heat Exchanger. Nanofluids contain suspended metallic nanoparticles: increasing their concentration, in comparison to the base fluid, the thermal conductivity increases and the volumetric heat ...
Giuseppe Diglio, Carlo Roselli, Maurizio Sasso, Umavathi Jawali Channabasappa   +3 more
openaire   +3 more sources

Transient heat transfer in a coaxial borehole heat exchanger

Geothermics, 2014
Ground-source heat pumps often use vertical boreholes to exchange heat with the ground. A transient heat transfer model has been developed for a thermal response test on a pipe-in-pipe coaxial borehole heat exchanger. The analytical model calculates the vertical temperature profiles in the fluid flowing through the pipes, which are coupled to the ...
Richard A. Beier, José Acuña, Palne Mogensen, Björn Palm   +3 more
openaire   +3 more sources

Numerical investigation on the effects of geological parameters and layered subsurface on the thermal performance of medium-deep borehole heat exchanger

Renewable Energy, 2020
Medium-deep borehole heat exchanger (MDBHE) has attracted considerable attention because of its ability to acquire large quantities of geothermal energy. Geological conditions in the medium-deep reservoir significantly affect thermal extraction.
Jun Liu, Fenghao Wang, Wanlong Cai, Zhihua Wang, Li Chun   +4 more
semanticscholar   +3 more sources

Influencing factors analysis and operation optimization for the long-term performance of medium-deep borehole heat exchanger coupled ground source heat pump system

Energy and Buildings, 2020
Application of the medium-deep borehole heat exchanger (MDBHE) coupled ground source heat pump (GSHP) system on building heating has been gradually accepted by public and its sustainability becomes a key concern.
Jun Liu, Fenghao Wang, Yuan Gao, Yuping Zhang, Wanlong Cai, Ming Wang, Zhihua Wang   +6 more
semanticscholar   +3 more sources

Energy conversion through deep borehole heat exchanger systems: Heat storage analysis and assessment of threshold inlet temperature

Energy Conversion and Management, 2023
Shuai Huang, Jiqing Li, K. Zhu, Jiankai Dong, Ji Li, Yiqiang Jiang   +5 more
semanticscholar   +3 more sources

Numerical study on the heat performance of enhanced coaxial borehole heat exchanger and double U borehole heat exchanger

Applied Thermal Engineering, 2022
Ke Chen, Jia Zheng, Juan Li, Jingli Shao, Qiulan Zhang   +4 more
openaire   +2 more sources