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Thesis
Temperature dependency of burn-off emissions in the automobile industry
University of Iowa
Master of Science (MS), University of Iowa
Spring 2008
DOI: 10.17077/etd.o06cclu5
Abstract
<p>This work characterized burn-off emissions from automobiles. After an exhaustive literature review, engine temperatures were determined to reach a maximum temperature of approximately 110oC, while exhaust system components reached a maximum temperature around 600oC. Metal-drawing fluids were used to bend the exhaust system components during manufacturing. Because these components were not rinsed prior to incorporation into a vehicle, residues could be left on the surfaces. An experimental test chamber was constructed to conduct controlled testing of three metalworking fluids of various types to mimic real-world conditions. Real-time particle number measurements were made using a condensation particle counter and an optical particle counter. The temperature at which burn-off begins to occur was found to be around 120 to 150oC. This burn-off was found to be an evaporation-condensation phenomenon when metalworking fluid residues vaporize and condense forming fine (0.1µm to 2.5µm) and ultrafine (<0.1µm) aerosols. The temperature dependency of this phenomenon was observed to follow the Clausius-Clapeyron equation that states as temperature increases, vapor pressure increases. Most aerosol particles were observed to be in the range of less than 0.01µm to approximately 2.0µm.</p>
Details
- Title: Subtitle
- Temperature dependency of burn-off emissions in the automobile industry
- Creators
- Krista Janette Scott - University of Iowa
- Contributors
- William A. Heitbrink (Advisor)Wayne T. Sanderson (Committee Member)Thomas M. Peters (Committee Member)
- Resource Type
- Thesis
- Degree Awarded
- Master of Science (MS), University of Iowa
- Degree in
- Occupational and Environmental Health
- Date degree season
- Spring 2008
- Publisher
- University of Iowa
- DOI
- 10.17077/etd.o06cclu5
- Number of pages
- vi, 45 pages
- Copyright
- Copyright 2008 Krista Janette Scott
- Language
- English
- Date copyrighted
- 2008
- Description bibliographic
- Includes bibliographical references (pages 43-45).
- Academic Unit
- Occupational and Environmental Health
- Record Identifier
- 9983776629002771
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