Welcome to CDC stacks |
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
Validation of temperature and humidity thermal model of 23-person tent-type refuge alternative
Filetype[PDF-2.59 MB]


Details:
  • Alternative Title:
    Min Eng
  • Personal Author:
  • Description:
    U.S. Mine Safety and Health Administration (MSHA) regulations require underground coal mines to use refuge alternatives (RAs) to provide a breathable air environment for 96 hours. One of the main concerns with the use of mobile RAs is heat and humidity buildup inside the RA. The accumulation of heat and humidity can result in miners suffering heat stress or even death. MSHA regulations require that the apparent temperature in an occupied RA not exceed 95 °F. To investigate this, the U.S. National Institute for Occupational Safety and Health (NIOSH) conducted testing on a 23-person tent-type RA in its Experimental Mine in a test area that was isolated from the mine ventilation system. The test results showed that the average measured air temperature within the RA increased by 9.4 °C (17 °F) and the relative humidity approached 94 percent at the end of a 96-hour test. The test results were used to benchmark a thermal simulation model of the tested RA. The validated thermal simulation model predicted the volume-weighted average air temperature inside the RA tent at the end of 96 hours to within 0.06 °C (0.1 °F) of the average measured air temperature.

  • Subject:
  • Pubmed ID:
    27942076
  • Pubmed Central ID:
    PMC5148170
  • Document Type:
    Journal Article
  • Funding:
    CC999999/Intramural CDC HHS/United States
  • Collection(s):
    CDC Public Access
  • Main Document Checksum:
No Related Documents.
You May Also Like:
  1. Temperature Rise Within a Mobile Refuge Alternative—Experimental Investigation and Model Validation
    Personal Author:
    Yan, Lincan; Yantek, David; Klein, Mark; Bissert, Peter; Matetic, Rudy;
    Published Date:
    Dec 21 2016
    Source:
    J Therm Sci Eng Appl. 9(2).
    Description:
    Mine Safety and Health Administration (MSHA) regulations require underground coal mines to install refuge alternatives (RAs). In the event of a disaster, RAs must be able to provide a breathable air environment for 96 h. The interior environment of a...
    File Type:
    Filetype[PDF - 3.54 MB]
  2. Portable refuge alternatives temperature and humidity tests
    Personal Author:
    Yan, L.; Yantek, D.;
    Published Date:
    Oct 2018
    Source:
    Min Eng. 70(10):43-49
    Description:
    Federal regulations require refuge alternatives in underground coal mines to sustain life for 96 h while maintaining an apparent temperature below 35 °C (95 °F). Research by the U.S. National Institute for Occupational Safety and Health (NIOSH) has...
    File Type:
    Filetype[PDF - 1.42 MB]
  3. Effects of mine strata thermal behavior and mine initial temperatures on mobile refuge alternative temperature
    Personal Author:
    Yantek, D.S.; Yan, L.; Bissert, P.T.; Klein, M.D.;
    Published Date:
    Apr 2017
    Source:
    Min Eng. 69(4):41-48.
    Description:
    Federal regulations require the installation of refuge alternatives (RAs) in underground coal mines. Mobile RAs have a limited ability to dissipate heat, and heat buildup can lead to a life-threatening condition as the RA internal air temperature and...
    File Type:
    Filetype[PDF - 840.40 KB]
  4. Investigation of temperature rise in mobile refuge alternatives
    Personal Author:
    Yantek, David S.
    Corporate Authors:
    National Institute for Occupational Safety and Health. Office for Mine Safety and Health Research.
    Published Date:
    March 2014
    Series:
    Report of investigations ( National Institute for Occupational Safety and Health) ; RI-9695
    Description:
    DHHS publication ; no. (NIOSH) 2014-117Background: One of the initial and persistent concerns over the use of mobile refuge alternatives (RA) is the temperature rise inside the RA from the metabolic heat of the occupants and the heat released by the ...
    File Type:
    Filetype[PDF - 20.77 MB]
  5. Analysis of heat loss mechanisms for mobile tent-type refuge alternatives
    Personal Author:
    Bissert, P.T.; Yantek, D.S.; Klein, M.D.; Yan, L.;
    Published Date:
    2016
    Source:
    Trans Soc Min Metall Explor Inc. 340(1):70-74.
    Description:
    Federal regulations require that refuge alternatives (RAs) be located within 305 m (1,000 ft) of the working face and spaced at one-hour travel distances in the outby area in underground coal mines, in the event that miners cannot escape during a dis...
    File Type:
    Filetype[PDF - 416.72 KB]