Theses and Dissertations from UMD

Permanent URI for this communityhttp://hdl.handle.net/1903/2

New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a give thesis/dissertation in DRUM

More information is available at Theses and Dissertations at University of Maryland Libraries.

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Author: search.filters.author.Allan, KathrynSubject: search.filters.subject.Engineering, General

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    Laminar Smoke Points of Candle Flames
    (2007-05-08) Allan, Kathryn; Allan, Kathryn M; Fire Protection Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    An experimental investigation of laminar smoke points of candle flames is presented. A smoke point is the flame length just before the onset of visible smoke release. Adjustable wicks with diameters of 2 - 7.6 mm were used to measure smoke points in quiescent air for 14 different waxes. The measured smoke points varied from 36 - 89 mm and increased with wick diameter. Smoke points fitted to a wick diameter of 4 mm increased from consumer-grade waxes (candelilla, carnauba, beeswax, paraffin) to alkanes (hexatriacontane, octacosane, tetracosane) to alcohols (octadecanol, docosanol, hexadecanol) to acids (stearic, palmitic, lauric, myristic). Within each wax family, a decrease in carbon number yielded an increased smoke point. Soot emission was not possible for any fuel when the wick diameter was below 1.8 mm or when wick length was below 6 mm. The results suggest new ways of producing cleaner burning candles.