Simplifying analysis of sorption of SVOCs to particles: Lumped parameter method and application condition
Simplifying analysis of sorption of SVOCs to particles: Lumped parameter method and application condition
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SVOC 对颗粒吸附的简化分析:集总参数方法和应用条件
DOI:
10.1016/j.ijheatmasstransfer.2016.03.100
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发表时间:
2016-08
影响因子:
5.2
通讯作者:
Zhang Yinping
中科院分区:
文献类型:
--
作者:
Liu Cong;Cao Jianping;Zhang Yinping
Dynamic mass transfer between semi-volatile organic compounds (SVOCs) and particles needs accurate and simple description for exposure assessment. The lumped parameter method (LPM) is such a simplified approach. The classical condition under which LPM applies in mass transfer is that the Little number (Lt=vtL/D/K, dimensionless ratio of internal resistance to external one) is less than 0.1 when dimensionless excessive concentration is constrained to be less than 5%. It should be noted that the condition above justifies application of LPM from time = 0 to∞. However, in indoor environments, lifetime of airborne particles tends to be finite, e.g., on the order of one hour. The application condition of LPM for such finite duration has not been clarified. Using dimensionless analysis, we derived a correlation to relates the critical Little number (Ltc) withFom(Fom=Dt/r2, a dimensionless parameter for duration time). It shows that the applied condition of LPM for finite duration is less strict. For example, ifFom< 10−4,Ltcis smaller than 5.2. To illustrate application of the simplified approach and corresponding accuracy of the results, an example is presented for analyzing the transient mass transfer processes between SVOCs and airborne particles in practical residential buildings. The approach is also useful to address various transient mass transfer problems within finite time.
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DOI:
--
发表时间:
1977
期刊:
Advances in environmental science and technology
影响因子:
--
作者:
C. Junge
通讯作者:
C. Junge
影响因子:
6.4
作者:
H. Sadat
通讯作者:
H. Sadat
DOI:
10.1016/b978-0-12-459756-3.x5001-9
发表时间:
1968
期刊:
--
影响因子:
--
作者:
A. Lykov
通讯作者:
A. Lykov
影响因子:
11.4
作者:
Little, John C.;Weschler, Charles J.;Hubal, Elaine A. Cohen
通讯作者:
Hubal, Elaine A. Cohen
影响因子:
5
作者:
Liu, Cong;Morrison, Glenn C.;Zhang, Yinping
通讯作者:
Zhang, Yinping