The Impact of Environmental Conditions on the Heat and Emissions Produced by Large Diesel Engines in Underground Mines

Details

• Personal Author:
  Bogin GE Jr. ; Newman A ; Smoorenburg E ; Swift A
• Description:
  Diesel-powered equipment generates significant heat and emissions in an underground mine. Studies in literature demonstrate that changes in ambient temperature and relative humidity affect engine performance and its emissions, which may in turn affect worker exposure. This study builds and simulates models of six Tier 2 turbocharged diesel engines, including aftertreatment systems, with displacement between 12.8 and 18.9 liters, to determine what, if any, feedback mechanism exists between local changes in temperature, pressure, and relative humidity, and the output of heat, nitrogen oxides, and soot from the engines. This study analyzes the simulation results under conditions representative of an actual mine, where measurements of 29 degrees C, 80% relative humidity, and 103 kPa ambient pressure represent baseline conditions. After engines had operated for two hours, these same measurements were 37 degrees C, 60% relative humidity, and 103 kPa ambient pressure. In the period between baseline and peak-temperature conditions, heat output increases up to 1.9% across all models, soot increases up to 5.2%, and nitrogen oxides decrease up to 16%. Results from this study can be used in a production scheduling optimization model to improve thermal management of the mine and to minimize heat-related disruptions in operations. [Description provided by NIOSH]
• Subjects:
  Environment Hot Temperature Humidity Mining Occupational Health Safety Vehicle Emissions
• Keywords:
  Author Keywords: Emissions Diesel Engines Environmental Factors Heat Heat Production Heavy Equipment Hot Environments Mining Equipment Mining Industry Underground Mines Underground Mining

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• ISSN:
  0959-6526
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Journal Article
• Place as Subject:
  Colorado ; OSHA Region 8
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  429
• NIOSHTIC Number:
  nn:20069529
• Citation:
  J Clean Prod 2023 Dec; 429:139277
• Contact Point Address:
  Alexandra Newman, Department of Mechanical Engineering, Colorado School of Mines, Golden, CO, 80401, USA
• Email:
  anewman@mines.edu
• Federal Fiscal Year:
  2024
• Peer Reviewed:
  True
• Source Full Name:
  Journal of Cleaner Production
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:75531caafaafa6b5517b2fb3df0196fa2391d48a860319b560470374656113b09ce3d90848baeedb261ee038e8a38a80ca2f0b999e4e29777b8989d0dfbe7ea5
• Download URL:
  https://stacks.cdc.gov/view/cdc/207950/cdc_207950_DS1.pdf
• File Type:
  [PDF - 2.80 MB ]