Results 91 to 100 of about 3,922,021 (231)

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

Analysis of lining force transmission coefficient and surrounding rock displacement in lined rock caverns for underground gas storage

Deep Underground Science and Engineering, EarlyView.
This study derives an explicit expression for the lining force transmission coefficient of underground gas storage lined rock caverns (LRCs) via the complex variable function method, considering the displacement release coefficient. Taking the 1‰ tensile strain of surrounding rock as the criterion to determine lining thickness, it systematically ...
Yaohui Li, Jianping Yang, Weizhong Chen
wiley   +1 more source

Analysis of Traction Performance for 180 HP Continuously Variable Transmission Tractor

Applied Sciences
The traction performance analysis of hydro-mechanical transmission (HMT) tractors is employed to evaluate and optimize the transmission system during the design phase, thereby reducing research and development costs associated with continuously variable ...
Yue Song, Yajing Jin, Ying Kong, Yehui Zhao, Tao Yin, Guangming Wang   +5 more
doaj   +1 more source

Finite Element Analysis for Li Batteries at the Mesoscale

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Finite element analysis (FEA), through multi‐physics coupling, has been widely employed to calculate mesoscale structures in LIBs that exhibit inherent randomness and disorder (Figure a). It has been extensively applied to the investigation of critical phenomena such as Li dendrite evolution, Li+ concentration gradients, SEI film growth, particle ...
Guanwu Li, Bo Gao, Dong Wang, Weitao Zheng   +3 more
wiley   +1 more source

Research on Crack Propagation and Stress Propagation in Coal‐Rock Combinations Under Different In Situ Stresses Subjected to Blasting Loads

Energy Science &Engineering, EarlyView.
A stress wave propagation model for coal‐rock combinations under in situ stress was established. Taking a coal mine in Huainan, China as the engineering background, isotropic and anisotropic numerical models were constructed. Field engineering practices were carried out to verify the reliability of the conclusions.
Jianyu Zhang, Guangming Chen, Meiyao Li, Xinyu Wang, Yuting Liu, Renjie Cui, Yixin Gong   +6 more
wiley   +1 more source

Fracture Development Mechanism of Water‐Isolating Soil Layers During Downward Mining of Shallow‐Buried Coal Seam Groups

Energy Science &Engineering, EarlyView.
This study systematically investigates the fracture development mechanisms of water‐isolating soil layers under the coupled effects of repeated mining and groundwater seepage during the downward mining of shallow‐buried coal seams. The findings provide a theoretical basis for evaluating stratum stability and preventing roof water inrush.
Tao Yang, Shuqi Zhang, Jie Zhang, Haifei Lin, Dong Liu, Hui Liu, Yiming Zhang, Jianping Sun   +7 more
wiley   +1 more source

New Insights into High-Throughput Screening of Mechanical Homogeneity Using Surface Microstrain and Profile Analysis After Cold Isostatic Pressing

Metals
Based on the hydrostatic transmission principle, a new method for high-throughput characterization via surface microstrain effects after cold isostatic pressing is proposed.
Qun Ren, Yenan Wang, Xirong Yang, Yuyang Han, Haizhou Wang   +4 more
doaj   +1 more source

Triple Porosity Model and Its Application for Coal Seam Gas Injection Displacement of CH4

Energy Science &Engineering, EarlyView.
(1)Compared with injecting CO2, injecting N2 has a shorter penetration time, but the CH4 flow rate takes longer to stabilize, meaning the displacement process lasts longer. (2)The flow rate of CH4 rapidly decreases and gradually approaches 0; the flow rates of N2 and CO2 are 0 before breakthrough, then increase rapidly and eventually stabilize.
Qingwei Zhang, Jianqing Xiao, Chunguang Zhang   +2 more
wiley   +1 more source

The justification for applying hydrostatic–mechanical transmissions on wheeled tractors by experimental determination of basic performance of hydrostatic transmission

, 2015
Проведены экспериментальные исследования гидрообъемной передачи, входящей в состав гидрообъемно–механической трансмиссии, и получены основные параметры, характеризующие эффективность ее работы.
Шуба, Сергей Александрович, Шевцов, Вадим Михайлович, Митцель, Николай Александрович, Деркач, Олег Игоревич, Самородов, Вадим Борисович   +4 more
core  

ANALYSIS OF HYDROSTATIC MECHANICAL TRANSMISSION EFFICIENCY IN THE PROCESS OF WHEELED VEHICLE BRAKING [PDF]

Transport Problems, 2018
TARAN, Igor, KLYMENKO, Iryna
openaire   +1 more source