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Indoor Air

Title:		Three-dimensional non-isothermal numerical model for predicting semi-volatile organic compound transport process in a room
Author(s):		Bai F; Ding H; Mu YT; Dai YJ; Zhang YP; Tao WQ;
Address:		"Key Laboratory of Thermo-Fluid Science & Engineering of MOE, Xi'an Jiaotong University, Xi'an, China. School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China. Institute of Built Environment, Tsinghua University, Beijing, China"
Journal Title:		Indoor Air
Year:		2021
Volume:		20210510
Issue:		6
Page Number:		2312 - 2328
DOI:		10.1111/ina.12849
ISSN/ISBN:		1600-0668 (Electronic) 0905-6947 (Linking)
Abstract:		"In this paper, a three-dimensional non-isothermal computational model for predicting indoor SVOC distribution is proposed, considering the effects of turbulence diffusion and suspended particles. The realizable k-epsilon model is introduced for turbulent flow simulation in a room. The Euler-Euler method is adopted to deal with the gas-particle two-phase flow coupled problem. Inertia slip velocity and irreversible first-order absorption boundary are employed for more accurate prediction of particle motion. The simulated curve of outlet gas-phase di-2-ethylhexyl phthalate (DEHP) concentration with emission time is verified by available experimental data. The emission process of DEHP in a 15 m(2) room in Beijing during 100 days with or without air cleaner is simulated by the developed model considering air leak through window and door gaps. It is found that if the air cleaner keeps on all the time during 100 days the gas-phase DEHP concentration in the room will tend to be uniform, while the emission process is far from equilibrium without an air cleaner even the emission lasts 100 days. Results also suggest that floor heating, decrease of particle concentration, weaken of heat transfer, enhancement of mass transfer, and air infiltration in window gap contribute to decrease DEHP concentration"
Keywords:		"*Air Pollution, Indoor/analysis Beijing *Diethylhexyl Phthalate/analysis Floors and Floorcoverings *Volatile Organic Compounds convective mass transfer di-2-ethylhexyl phthalate first-order absorption boundary inertia slip velocity numerical simulation mo;"
Notes:		"MedlineBai, Fan Ding, Hao Mu, Yu-Tong Dai, Yan-Jun Zhang, Yin-Ping Tao, Wen-Quan eng Research Support, Non-U.S. Gov't England 2021/05/11 Indoor Air. 2021 Nov; 31(6):2312-2328. doi: 10.1111/ina.12849. Epub 2021 May 10"