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Ventilation approaches and radon control in Canadian houses [PDF]

Frontiers in Public Health
IntroductionBalanced mechanical ventilation with heat (sensible heat only) or energy (sensible and latent heat) recovery has the potential to dilute indoor radon and may be an appropriate first step at reducing moderate indoor radon concentration in a ...
Janet Gaskin, Liang Grace Zhou, Yunyi Ethan Li, Patrique Tardif   +3 more
doaj   +2 more sources

Numerical Simulation of Gas Hydrate Production Using the Cyclic Depressurization Method in the Ulleung Basin of the Korea East Sea

Applied Sciences, 2021
The depressurization method is known as the most productive and effective method for successful methane recovery from hydrate deposits. However, this method can cause considerable subsidence because of the increased effective stress.
Taehun Lee, Joo Yong Lee, Taewoong Ahn, Han Am Son   +3 more
doaj   +1 more source

Spacecraft Launch Depressurization Loads [PDF]

Journal of Spacecraft and Rockets, 1997
The pressure variation inside the launch vehicle fairing during climb through the atmosphere induces structural loads on the walls of closed-type spacecrafts or equipment boxes. If the evacuation of the air is not fast enough, excessive pressure loading can result in damage of elements exposed to the rising pressure jump, which depends mainly on the ...
Sanz Andres, Angel Pedro, Santiago Prowald, Julián B., Ayuso Barea, A.   +2 more
openaire   +2 more sources

Influence of Intrinsic Permeability on the Production Performance of Shenhu Hydrate Sediment through Depressurization [PDF]

E3S Web of Conferences, 2019
Natural gas hydrate(NGH) is a clean resource with huge reserves. The depressurization method is an economical and effective exploitation method. In the process of depressurization, reservoir absolute permeability has an important influence on production ...
Ma Yingrui, Li Shuxia, Wu Didi
doaj   +1 more source

Advances in Liquid Atomization via Flash Boiling—A Global Overview

Energies, 2023
A wide range of recent applications require high-quality sprays that are characterized by extremely small-sized droplets, a narrow droplet size distribution, and a short breakup length.
Tali Bar-Kohany, Merav Arogeti, Avihai Malka, Eran Sher   +3 more
doaj   +1 more source

Multi-Lateral Well Productivity Evaluation Based on Three-Dimensional Heterogeneous Model in Nankai Trough, Japan

Energies, 2023
Widely employed in hydrate exploitation, the single well method is utilized to broaden the scope of hydrate decomposition. Optimizing the well structure and production strategy is necessary to enhance gas recovery efficiency. Complex wells represented by
Xin Xin, Ying Shan, Tianfu Xu, Si Li, Huixing Zhu, Yilong Yuan   +5 more
doaj   +1 more source

Production Performance Analysis of Class II Hydrate-Bearing Layers Based on an Analytic Aquifer Model

Frontiers in Energy Research, 2021
In the current numerical simulation studies, bottom water in Class II hydrate-bearing layers is represented by grids with high water saturation that significantly extends the calculation time if the volume of the bottom water is large or grid size is ...
Jing Yu, Lubin Zhuo, Yang Chen, Wenchao Sun, Yongge Liu   +4 more
doaj   +1 more source

A preliminary study on the Mesozoic massive gold metallogenic mechanism of the deep-large fault coupling with critical water in the Jiaodong area, China

Dizhi lixue xuebao, 2021
This study aims to study the reason why a huge accumulation of gold deposits occurred in the Jiaodong area. We summarized and analyzed the geological background and metallogenic characteristics of the Jiaodong gold deposits.
HU Baoqun, GAO Haidong, WANG Yun, ZHANG Baolin, LYU Guxian   +4 more
doaj   +1 more source

Numerical Investigation of Depressurization through Horizontal Wells in Methane-Hydrate-Bearing Sediments Considering Sand Production

Journal of Marine Science and Engineering, 2022
Sand production has been identified as a key reason limiting sustained and commercial gas production in methane-hydrate-bearing sediments. Production tests in Canada and Japan were terminated partially because of excessive sand production in pilot wells.
Xuyang Guo, Yan Jin, Jingyu Zi, Jiaying Lin, Bolong Zhu, Qian Wen, Qi Jing   +6 more
doaj   +1 more source

Numerical Simulation of Gas Production and Reservoir Stability during CO₂ Exchange in Natural Gas Hydrate Reservoir

Energies, 2022
The prediction of gas productivity and reservoir stability of natural gas hydrate (NGH) reservoirs plays a vital role in the exploitation of NGH. In this study, we developed a THMC (thermal-hydrodynamic-mechanical-chemical) numerical model for the ...
Qingping Li, Shuxia Li, Shuyue Ding, Zhenyuan Yin, Lu Liu, Shuaijun Li   +5 more
doaj   +1 more source