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Noise metrics comparison and its use on urban zoning in airport surveys: A Brazilian case study
Revoredo, Téo C.; Slama, Jules G. - In: Journal of Air Transport Management 14 (2008) 6, pp. 304-307
This paper considers the environmental acoustics metrics conversion problem in relation to airport noise. In many countries, there is a need to change the metrics used in airport noise studies and to establish the relation between two different metrics, like day night sound level DNL, used in...
Persistent link: https://www.econbiz.de/10010755173
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Effect of horizontal and vertical well patterns on methane hydrate dissociation behaviors in pilot-scale hydrate simulator
Feng, Jing-Chun; Wang, Yi; Li, Xiao-Sen; Li, Gang; Zhang, Yu - In: Applied Energy 145 (2015) C, pp. 69-79
depressurization and thermal stimulation. The results indicate that, for the depressurization and thermal stimulation methods, the gas …
Persistent link: https://www.econbiz.de/10011263226
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Evaluation of gas production from methane hydrates using depressurization, thermal stimulation and combined methods
Song, Yongchen; Cheng, Chuanxiao; Zhao, Jiafei; Zhu, Zihao - In: Applied Energy 145 (2015) C, pp. 265-277
hydrate in porous media using depressurization, two-cycle warm-water injection and a combination of the two methods were … using the three methods. The driving force of the hydrate dissociation at different stages of depressurization was analyzed … advantages for hydrate exploitation over the depressurization and warm-water-injection method in terms of the energy efficiency …
Persistent link: https://www.econbiz.de/10011263245
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Experimental investigation into gas production from methane hydrate in sediment by depressurization in a novel pilot-scale hydrate simulator
Li, Xiao-Sen; Yang, Bo; Zhang, Yu; Li, Gang; Duan, Li-Ping - In: Applied Energy 93 (2012) C, pp. 722-732
The gas production behavior from methane hydrate in the sediment by depressurization was investigated in a novel pilot …
Persistent link: https://www.econbiz.de/10010572028
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Numerical simulation of gas production from hydrate deposits using a single vertical well by depressurization in the Qilian Mountain permafrost, Qinghai-Tibet Plateau, China
Zhao, Jiafei; Yu, Tao; Song, Yongchen; Liu, Di; Liu, Weiguo - In: Energy 52 (2013) C, pp. 308-319
a single vertical well by depressurization. The simulation results indicated that for a 1.5 MPa wellbore pressure, the … total gas hydrates in the simulated system. The results may suggest that the single vertical well by depressurization method …, such as a horizontal well design or the combination of depressurization and thermal stimulation, may be more economically …
Persistent link: https://www.econbiz.de/10011053548
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Depressurization induced gas production from hydrate deposits with low gas saturation in a pilot-scale hydrate simulator
Li, Bo; Li, Xiao-Sen; Li, Gang; Feng, Jing-Chun; Wang, Yi - In: Applied Energy 129 (2014) C, pp. 274-286
The kinetic behaviors of methane hydrate dissociation under depressurization in porous media are investigated through … depressurization in the PHS is mainly controlled by the mass and heat transfer processes. …
Persistent link: https://www.econbiz.de/10011040947
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A three-dimensional study on methane hydrate decomposition with different methods using five-spot well
Wang, Yi; Li, Xiao-Sen; Li, Gang; Zhang, Yu; Li, Bo; … - In: Applied Energy 112 (2013) C, pp. 83-92
different methods, which are the depressurization (DP) using a single well, the heat stimulation using five-spot well (HS-5S …), and the heat stimulation in conjunction with depressurization using five-spot well (H&D-5S), respectively. During these …
Persistent link: https://www.econbiz.de/10011040998
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Analyzing the process of gas production for natural gas hydrate using depressurization
Zhao, Jiafei; Zhu, Zihao; Song, Yongchen; Liu, Weiguo; … - In: Applied Energy 142 (2015) C, pp. 125-134
Natural gas hydrate is a vast energy resource with global distribution in permafrost regions and in the oceans; its sheer volume demands that it be evaluated as a potential energy source. Understanding the mechanisms of natural gas extraction from hydrate-bearing sediments is critical for the...
Persistent link: https://www.econbiz.de/10011208364
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The economics of business cycles numerical model role of fixed costs
Aranoff, Gerald - In: Modern economy 11 (2020) 2, pp. 600-608
Persistent link: https://www.econbiz.de/10012425020
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Numerical modeling of the Rideau Valley Watershed
Ahmed, Ferdous - In: Natural Hazards 55 (2010) 1, pp. 63-84
Using the Mike11 modeling system by the Danish Hydraulic Institute, a detailed model of the Rideau Valley Watershed was constructed. It includes 532 km of rivers and lakes, 106 basins, 122 bridges and culverts, and 20 water control structures. The model was calibrated using measured streamflow...
Persistent link: https://www.econbiz.de/10010995772