Results 31 to 40 of about 1,975 (187)

An Assessment Methodology of Shallow Geothermal Energy Projects

The Open Fuels & Energy Science Journal, 2014
Combination of theoretical and numerical analysis, an assessment approach of shallow geothermal energy project is proposed. A case study on Chongqing is carried out to verify the methods. According to the theoretical calculation, the heat transfer power per meter of typical boreholes in Chongqing is 40 W/m for cooling and 50 W/m for heating.
You Shuang, Li Xiangyu, Gao Yu, Tang Wendi   +3 more
openaire   +1 more source

Quantitative analysis of the influence of middle-deep structural characteristics on shallow geothermal field

Frontiers in Earth Science
The study of the shallow geothermal field can provide precise parameters for the optimization design of ground source heat pump systems, and offer scientific basis for urban energy planning and the selection of new energy stations in new areas.
Feng Gao, Feng Gao, Jun Gao, Jun Gao, Lizhi Wang, Lizhi Wang, Huaqing Bai, Huaqing Bai, Xianchun Tang, Xianchun Tang, Junsheng Qin, Junsheng Qin, Dailei Zhang, Dailei Zhang, Xuwei Yin, Xuwei Yin, Tianyi Lin, Tianyi Lin, Qing Liu, Qing Liu   +19 more
doaj   +1 more source

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, Cai Wanlong, Wang Ming, Gao Yuan, Liu Jun, Wang Zhihua, Xu Han   +6 more
doaj   +2 more sources

Overview on hydrothermal and hot dry rock researches in China

China Geology, 2018
: Geothermal energy is a precious resource, which is widely distributed, varied, and abundant. China has entered a period of rapid development of geothermal energy since 2010.
Gui-ling Wang, Wei Zhang, Feng Ma, Wen-jing Lin, Ji-yun Liang, Xi Zhu   +5 more
doaj   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

Deep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Rock mechanical properties under reconstructed deep in situ thermo–hydro–mechanical conditions: Implications for CO₂‐related injection scenarios

Deep Underground Science and Engineering, EarlyView.
The graphical abstract illustrates a reconstructed in situ thermo‐hydro‐mechanical (THM) framework in which porosity serves as the central variable linking stress, pore pressure, and temperature to evolving mechanical properties of rocks. Under burial conditions, in situ stress, pore pressure, and temperature jointly govern volumetric strain and ...
Mingyuan Lu, Jun Wang, Zixiong Qi, Ruixuan Chen, Hongtao Wang, Hongwei Zhou   +5 more
wiley   +1 more source

Research on the efficient development of shallow geothermal energy: Experimental and numerical investigations on the heat transfer characteristics of the soil-cement energy pile

Shuiwen dizhi gongcheng dizhi
The heating and cooling system of ground-source heat pump is currently the most important development and utilization method of shallow geothermal resources. In order to solve the bottleneck problems of low thermodynamic efficiency and large footprint of
Huimin RONG, Xun ZHOU, Lizhi WANG, Jia ZHENG, Qimin LI   +4 more
doaj   +1 more source