Optimization of freely suspended exterior hoods in industrial ventilation.

Details

• Personal Author:
  Esmen NA ; Weyel DA
• Description:
  An optimization procedure for the design of freely suspended exterior hoods in industrial ventilation systems was described. Theoretical considerations in the investigation of the implications of hood orifice geometry and in the selection of proper size of the orifice were addressed. An experimental study was carried out to verify the theoretical calculations indirectly. Three oblong hoods were constructed. With hood openings fixed, conditions under which the hoods were optimum were calculated for different values of frontal distance. The optimum flow rate was then predicted for each condition. The air speed was measured at each theoretically determined specification point and the flow rate was adjusted until the air speed specification was fulfilled. The experimentally determined flow rate was then compared to the theoretical flow rate. The authors conclude that the optimization procedure appears to be satisfactory and perhaps slightly pessimistic in the indication of the flow rate required. Hoods designed using the described process should have a superior total efficiency as compared to traditionally designed hoods.
• Subjects:
  Accidents, Occupational Epidemiology Hazardous Substances Occupational Health Safety Workplace
• Keywords:
  Air Flow Air Quality Control Air Treatment Control Technology Equipment Design Industrial Design Industrial Ventilation NIOSH Grant Ventilation Equipment Ventilation Hoods
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Conference/Symposia Proceedings
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1037-1042
• NIOSHTIC Number:
  nn:00198880
• Citation:
  Proceedings of the VIIth International Pneumoconioses Conference, August 23-26, 1988, Pittsburgh, Pennsylvania, USA. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 90-108, 1990 Nov; (Pt II):1037-1042
• Contact Point Address:
  Industrial Environ Health Scis University of Pittsburgh 130 Desoto Street Pittsburgh, PA 15261
• Federal Fiscal Year:
  1991
• Performing Organization:
  University of Pittsburgh at Pittsburgh, Pittsburgh, Pennsylvania
• Peer Reviewed:
  False
• Part Number:
  II
• Start Date:
  19850501
• Source Full Name:
  Proceedings of the VIIth International Pneumoconioses Conference, August 23-26, 1988, Pittsburgh, Pennsylvania, USA
• End Date:
  19891231
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:4b4359b84692d295bbea70613935fc9c0a65a18fd1e58ab0d56b81b9f5300a1d68a2786bc235c8c468c8cb6f37462e5b8cb3fd08b493a4e5ee40d4950e28481b
• Download URL:
  https://stacks.cdc.gov/view/cdc/180711/cdc_180711_DS1.pdf
• File Type:
  [PDF - 161.63 KB ]