rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Cost benefit analysis of local exhaust ventilation systems
  name:
    name part: Shah, Dilipkumar Trikamji.
    role:
      role term: creator
  name:
    name part: Ellis, N. C.
    role:
      role term: degree committee member.
  name:
    name part: Greenhut, M. L.
    role:
      role term: degree committee member.
  name:
    name part: Kozen, R. B.
    role:
      role term: degree committee member.
  name:
    name part: Vernon, R. J.
    role:
      role term: degree supervisor.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses.
  genre: Case studies.
  origin info:
    place:
      place term: txu
    date issued: 1977
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xii, 121 leaves : illustrations ; 28 cm
  abstract: The objective of this investigation was to demonstrate that a cost benefit analysis approach, a versatile decision making tool, can be utilized by the Professions of Industrial Hygiene and Safety Engineering to justify costs involved in developing and implementing engineering controls of occupational exposures to physiologically harmful materials and/or conditions. A simplified and adaptable step-by-step cost benefit analysis approach is presented in this dissertation. To illustrate the efficacy of this approach, a local exhaust ventilation system was analyzed using a cost benefit analysis method. An experiment was conducted to evaluate the effects of three variables on the total cost (initial cost + continuing operating costs) of a local exhaust ventilation system. These variables were: 1. The cross section of the duct work (circular and rectangular ducts), 2. The radius to diameter (R/d) ratio of the elbow, and 3. The angle of entry of the branch duct into the main duct of the system. Two local exhaust ventilation systems, one with circular ducts and the other with rectangular ducts, identical in all respects, were designed, constructed and evaluated. For both systems, three 90° elbows, one each with R/d ratio of 1.5, 2.0 and 2.5, for the main duct and four angles of entry of 30°, 45°, 50° and 90° were used for the branch entering the main duct. The angles of entry were through properly designed expansion joints. Experiments were performed for capture velocities of 100, 125 and 150 feet per minute at distances of 6, 9, and 12 inches from the main duct opening at the centerline for each velocity.
  note: by Dilipkumar Trikamji Shah.
  note: "Major subject: Industrial Engineering."
  note: Vita.
  note: Texas A & M University
  note: Includes bibliographical references (leaves 82-86).
  subject:
    topic: Cost effectiveness
    genre: Case studies
  subject:
    topic: Exhaust systems
  subject:
    topic: Major industrial engineering
  subject:
    topic: Cost effectiveness
  subject:
    topic: Exhaust systems
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-372196
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-372196
  record info:
    record content source: TXA
    record creation date: 780202
    record change date: 20220104090658.0
    record identifier: in00000348665
    language of cataloging:
      language term: eng