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Experimental study on gas production from methane hydrate in porous media by SAGD method

Li, Xiao-Sen; Yang, Bo; Duan, Li-Ping; Li, Gang; Huang, … - In: Applied Energy 112 (2013) C, pp. 1233-1240

gravity drainage (SAGD) method. It is called the Pilot-Scale Hydrate Simulator (PHS). This study proposes the evaluation and … the comparisons of the gas production performance by SAGD method from the methane hydrate reservoir with different steam … original and the hydrate-originating gas releasing stage, and the hydrate-originating gas releasing stage (the SAGD process …

Persistent link: https://www.econbiz.de/10010702545

The energy efficiency ratio of heat storage in one shell-and-one tube phase change thermal energy storage unit

Wang, Wei-Wei; Wang, Liang-Bi; He, Ya-Ling - In: Applied Energy 138 (2015) C, pp. 169-182

From aspect of energy consuming to pump heat transfer fluid, there is no sound basis on which to create an optimum design of a thermal energy storage unit. Thus, it is necessary to develop a parameter to indicate the energy efficiency of such unit. This paper firstly defines a parameter that...

Persistent link: https://www.econbiz.de/10011116085

Energy balance, costs and CO2 analysis of tillage technologies in maize cultivation

Šarauskis, Egidijus; Buragienė, Sidona; Masilionytė, … - In: Energy 69 (2014) C, pp. 227-235

To achieve energy independence, Lithuania and other Baltic countries are searching for new ways to produce energy. Maize is a crop that is suitable for both food and forage, as well as for the production of bioenergy. The objective of this work was to assess the energy efficiency of maize...

Persistent link: https://www.econbiz.de/10011054389

A novel energy efficiency grade evaluation approach for machining systems based on inherent energy efficiency

Ma, Feng; Zhang, Hua; Gong, Qingshan; Hon, K. K. B. - In: International journal of production research 59 (2021) 19, pp. 6022-6033

Persistent link: https://www.econbiz.de/10012625997

Energy consumption and greenhouse gas emissions in the recovery and extraction of crude bitumen from Canada’s oil sands

Nimana, Balwinder; Canter, Christina; Kumar, Amit - In: Applied Energy 143 (2015) C, pp. 189-199

electricity (1.2–3.5kWh/GJ of bitumen) in steam assisted gravity drainage (SAGD), based on fundamental engineering principles … a major portion of the total energy consumption in surface mining and SAGD and thus is a main contributor to GHG … emissions. Emissions in surface mining and SAGD range from 4.4 to 7.4gCO2eq/MJ of bitumen and 8.0 to 34.0gCO2eq/MJ of bitumen …

Persistent link: https://www.econbiz.de/10011208371

Economic and environmental analysis of a Steam Assisted Gravity Drainage (SAGD) facility for oil recovery from Canadian oil sands

Giacchetta, Giancarlo; Leporini, Mariella; Marchetti, … - In: Applied Energy 142 (2015) C, pp. 1-9

decades. Steam-Assisted Gravity Drainage (SAGD) is the most promising approach for recovering heavy and viscous oil resources …. In SAGD, two closely-spaced horizontal wells, one above the other, form a steam-injector and producer pair. The reservoir … emissions from oil sand production by SAGD technology have been compared with values relating to conventional crude oil pathways …

Persistent link: https://www.econbiz.de/10011208389

On in situ hydrogen sulfide evolution and catalytic scavenging in steam-based oil sands recovery processes

Kapadia, Punitkumar R.; Wang, Jacky; Gates, Ian D. - In: Energy 64 (2014) C, pp. 1035-1043

In the SAGD (Steam-Assisted Gravity Drainage) process, high temperature saturated-steam is injected into an oil sands …. Current SAGD simulation models take into account complex spatial heterogeneity of geology and oil composition and the physics … taken the chemistry of SAGD into account. Here, we have added aquathermolysis reactions to a simulation model to understand …

Persistent link: https://www.econbiz.de/10011055913

A pseudo three-dimensional electrochemical–thermal model of a prismatic LiFePO4 battery during discharge process

Xu, Meng; Zhang, Zhuqian; Wang, Xia; Jia, Li; Yang, Lixin - In: Energy 80 (2015) C, pp. 303-317

A lithium ion battery consists of numerous electrochemical cell units. Thermal and electrical behaviors of these local cell units have great influence on the battery's performance and safety. To study the relationship between the cell units and the battery cell, a pseudo 3D (three-dimensional)...

Persistent link: https://www.econbiz.de/10011190933

Production behavior of methane hydrate in porous media using huff and puff method in a novel three-dimensional simulator

Li, Gang; Li, Xiao-Sen; Wang, Yi; Zhang, Yu - In: Energy 36 (2011) 5, pp. 3170-3178

The gas production behavior of methane hydrate in porous media using the huff and puff method was investigated in the Cubic Hydrate Simulator (CHS), a novel developed three-dimensional 5.8-L cubic pressure vessel. Three horizontal layers equally divide the CHS into four regions. A 9-spot...

Persistent link: https://www.econbiz.de/10010807453

Wave-splitting and absorbing boundary condition for Maxwell's equations on a curved surface

He, Sailing; Weston, Vaughan H. - In: Mathematics and Computers in Simulation (MATCOM) 50 (1999) 5, pp. 435-455

Wave-splitting of Maxwell's equations on a curved surface in three-dimension is derived from the conditions for out-going and in-coming waves. The condition for out-going wave is used to derive an absorbing boundary condition on a non-planar surface. A local approximation of the absorbing...

Persistent link: https://www.econbiz.de/10010748981