Development of a Power-Free Cigarette Ashtray
Date Issued
2005
Date
2005
Author(s)
Chiang, Feng-Yu
DOI
zh-TW
Abstract
Numerous studies have been conducted to investigate the health effect. Historically, smoking-control efforts have focused on smoking prevention and cessation through individual and group counseling efforts. Compared to the policy-oriented control, the technology-oriented control measures do not receive as much attention as it deserves. Therefore, the ultimate goal of this work was to develop or improve the currently commercially air cleaners designed for removing sidestream cigarette smokes.
An experimental system, composed of a sidestream cigarette smoke generator, a mixing and test chamber, and a sampling train, was set up to investigate the chemical and physical characteristics of the sidestream cigarette smokes. Q-TRAK were used to monitor the concentrations of CO and CO2; PID was used to measure the concentration of VOCs. Filter samples were collected for estimating the mass concentration. We also measured the temperature of cigarette burning tip, by using a homemade thermocouple with type K.
The results showed that emission factors and emission rates of CO, CO2, aerosol mass concentration, VOCs, the surface temperature of the smoldering cone all decreased, and cigarettes would burn completely with decreasing passing air flow. The thermal conductivity of the ashtray played an important role in both aerosol and gas emission. The design of the trench holding the cigarette was particularly critical. The cigarette smoldering rate decreased with increasing contact area, until the combustion ceased due to not enough heat generation.
Subjects
旁流煙
排放因子
導熱係數
sidestream cigarette smoke
emission factor
thermal conductivity
Type
thesis
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