The 2001-2002 Lawrence Berkeley National Laboratory (LBNL) nested, crossover-design study explored the operating profiles of two HVAC systems alternated over a period of approximately nine weeks, including during 2001 Fall school semester, in two pairs of classrooms sited adjacent to one another and equipped with either standard or alternate (low-emissivity) interior finish materials. The present study, a retrospective analysis, included inferring estimated indoor ozone concentrations. Because ozone can react with certain indoor pollutants to generate secondary organic aerosols, a mass-balanced based indoor/outdoor ratio expression was used to model indoor ozone to subsequently model indoor particles from possible ozone-initiated chemistry. When the advanced HVAC system, called IDEC, was running, surface (especially ceiling) reactions dominated ozone loss processes. When either of the standard HVAC systems, or Bard (different percentages of outdoor air intake) was running, damper setting and ventilation and/or gas phase reactions accounted for the majority of the indoor-outdoor ozone difference. In this study, statistical analysis indicated classroom B-A containing carpet (with polypropylene/polyolefin backing) and teaching materials (with bare surfaces) had higher fine particle number counts (PNC; PM0.3-0.5/PM0.5-0.7) than in the other study classrooms. Additionally, elevated humidity coupled with elevated estimated ozone at school A-B yielded comparatively elevated PNC. Mixed models demonstrated IDEC system use (100% outdoor air intake) at SDB-A, especially during weeks 7-9, yielded significantly greater indoor PNC (PM0.3-0.5/PM0.5-0.7) values than in the other study classrooms. Bard (50% outdoor air intake) use in both SDA classrooms (A, B) yielded comparatively greater PNC than IDEC.
Subject (authority = RUETD)
Topic
Public Health
Subject (authority = ETD-LCSH)
Topic
Ventilation
Subject (authority = ETD-LCSH)
Topic
Ozone
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_9259
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
1 online resource (524 pages : illustrations)
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Mawuena Quarcoo
RelatedItem (type = host)
TitleInfo
Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier (type = local)
rucore10001600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.