Results 91 - 100 of 238

• Swelling-Induced Volumetric Strains Internal to a Stressed Coal Associated with CO2 Sorption
  11/1/2007 - Peer reviewed journal articles
  A discussion the spatio-temporal volumetric strains in a consolidated Pittsburgh seam coal sample which were evaluated while both confining pressure and carbon dioxide CO2 pore pressure were evaluated.
• Role of Lubrication Oil in Particulate Emissions from a Hydrogen-Powered Internal Combustion Engine
  10/1/2007 - Peer reviewed journal articles
  The primary goal of this study was to investigate the formation of combustion-generated particles derived from lubrication oil in the absence of fuel-produced soot.
• Examination of Diesel Aftertreatment Systems at NIOSH Lake Lynn Laboratory
  10/1/2007 - Conference papers
  A paper describing tests conducted in the NIOSH Diesel Laboratory at the Lake Lynn Laboratory experimental mine, a facility developed to allow evaluation of control technologies directly in an underground environment.
• Explosion Prevention in United States Coal Mines
  9/1/2007 - Conference papers
  This paper discusses methods for protecting U.S. underground coal mines from explosions of methane gas and coal dust, and presents new research, such as the Coal Dust Explosibility Meter, a handheld device to directly measure coal dust explosibility.
• Numerical Analysis of the Influence of In-Seam Horizontal Methane Drainage Boreholes on Longwall Face Emission Rates
  9/1/2007 - Peer reviewed journal articles
  This study investigates different horizontal methane drainage borehole patterns, borehole lengths, and degasification times prior to and during panel extraction to evaluate their effectiveness in reducing methane emissions using a dynamic 3D reservoir m...
• Effect of Coal Type and Oxyfuel Combustion Parameters on Pulverised Fuel Ignition
  8/1/2007 - Conference papers
  This paper describes ignition tests on pulverised coal suspensions using a suite of coals of different rank and from different countries of origin and over a range of oxygen and coal concentrations of interest for oxyfuel combustion.
• Reservoir Simulation-Based Modeling for Characterizing Longwall Methane Emissions and Gob Gas Venthole Production
  7/1/2007 - Peer reviewed journal articles
  This paper presents the development and results of a comprehensive, "dynamic," three-dimensional reservoir model of a typical multi-panel Pittsburgh coalbed longwall mine. Results presented in this paper include a simulation of gas flow patterns from th...
• A Methodology for Determining Gob Permeability Distributions and its Application to Reservoir Modeling of Coal Mine Longwalls
  2/1/2007 - Conference papers
  Methane can be a significant hazard in coal mine longwalling operations and extensive methane mitigation techniques are employed by coal mine operators. Reservoir modeling techniques are used to better understand the liberation and migration of methane ...
• Using Ultrasonic Anemometers to Evaluate Face Ventilation Conditions
  2/1/2007 - Conference papers
  The fact that methane ignitions continue to occur at the mining face indicates that monitoring with machine-mounted methanometers does not always indicate the presence of high methane concentrations. Methane concentrations at the face change quickly du...
• Experimental Study of Flame Spread on Conveyor Belts in a Small-scale Tunnel
  2/1/2007 - Conference papers
  This paper presents experimental results for conveyor belt flame spread from tests conducted in a small-scale tunnel. The purpose of this study is to investigate the effects of certain factors, such as belt type, on the flame spread properties.