Results 71 to 80 of about 142,808 (328)

Carbon emissions reduction and net energy generation analysis in the New Zealand electricity sector through to 2050 [PDF]

, 2013
Carbon Emissions Pinch Analysis (CEPA) and Energy Return On Energy Investment (ERoEI) analysis are combined to investigate the feasibility of New Zealand reaching and maintaining a renewables electricity target of above 80% by 2025 and 2050, while also ...
Atkins, Martin John, Walmsley, Michael R.W., Walmsley, Timothy Gordon   +2 more
core   +1 more source

Overcoming challenges in the classification of deep geothermal potential [PDF]

, 2015
The geothermal community lacks a universal definition of deep geothermal systems. A minimum depth of 400 m is often assumed, with a further sub-classification into middle-deep geothermal systems for reservoirs found between 400 and 1000 m.
Breede, K., Dzebisashvili, K., Falcone, G.   +2 more
core   +1 more source

Microscopic time‐dependent mechanical behavior of shale derived from nanoindentation

Deep Underground Science and Engineering, EarlyView.
This study conducted grid nanoindentation creep tests to systematically analyze the microscopic creep behaviors of shale. Based on the analysis of creep strain rate sensitivity, the primary mechanism of microscopic creep in shale was found to be the extension and closure of microcracks.
Cunbao Li, Shilei Zhong, Heping Xie, Changtai Zhou, Jianjun Hu   +4 more
wiley   +1 more source

THE ECONOMIC IMPLICATIONS OF THE GEOTHERMAL POTENTIAL OF WEST AND NORTHWEST REGION OF ROMANIA [PDF]

The energy crises of the 70s led to the vigorous interventions of the industrialized states in the energy sector. On the European political agenda a new problem appeared, namely the one regarding the security of the energy supply.
Florea Adrian, Maghear Diana, Perticas Razvan   +2 more
core  

Mechanical property variation mechanisms of granite subjected to real‐time high temperatures and subsequent cooling treatment

Deep Underground Science and Engineering, EarlyView.
This study investigates the coupled thermo‐mechanical behavior of granite during heating and cooling through a combination of laboratory tests and finite element analysis. The thermal conductivity, mineral composition, mass loss rate, micro‐crack observation, and thermal fracture characteristics of granite under various temperature conditions are ...
Rui Pang, Dehao Meng, Thomas Frühwirt, Hao Liu, Yanan Zhao, Qingyou Zhu, Wengang Dang, Mohamed Ismael, Fei Wang   +8 more
wiley   +1 more source

Sustainable Design of Energy Systems - The Case of Geothermal Energy [PDF]

Geothermal energy is one of the renewable energy resources with a vast potential. It is extended spatially in many areas, isolated from urban areas and direct uses, whereas its utilisation when it is not for electricity production is many times hampered ...
Dias Haralambopoulos, Heracles Polatidis
core  

Numerical investigation of the correlations of hydraulic and elastic characteristics in diverse carbonate rock types

Deep Underground Science and Engineering, EarlyView.
We use the linear Boolean model and the discrete Fourier transformation approach to generate various carbonate rocks. The lattice Boltzmann method and the finite element method are applied to calculate permeability and elastic wave velocity, respectively.
Yutian Zhang, Yifan Wu, Chi Zhang, Fengqiao Wang, Hucheng Deng, Meiyan Fu, Yonghui Li, Qi Li   +7 more
wiley   +1 more source

Technologies for Heat Hazard Governance and Thermal Energy Recovery in Deep Mines

Energies
As the depth of mines continues to increase, the problems of high temperature and potential heat damage become more prominent. In this study, the characteristics of natural and industrial heat sources in mines were reviewed, and then mainstream heat ...
Yujin Ran, Jia Peng, Xiaolin Tian, Dengyun Luo, Jie Zhao, Peng Pei   +5 more
doaj   +1 more source

An Experimental Facility to Validate Ground Source Heat Pump Optimisation Models for the Australian Climate

Energies, 2017
Ground source heat pumps (GSHPs) are one of the most widespread forms of geothermal energy technology. They utilise the near-constant temperature of the ground below the frost line to achieve energy-efficiencies two or three times that of conventional ...
Yuanshen Lu, Kamel Hooman, Aleks D. Atrens, Hugh Russell   +3 more
doaj   +1 more source

Geothermal reservoir simulation [PDF]

The prediction of long-term geothermal reservoir performance and the environmental impact of exploiting this resource are two important problems associated with the utilization of geothermal energy for power production.
Faust, C., Mercer, J. W., Jr., Pinder, G. F.   +2 more
core   +1 more source