The FLEC® has been validated and used in research for many years.
Below is a publication list of journal articles, abstracts, poster or oral presentations where the FLEC or CHEMATEC’s other products have been in focus.
If you have anything that can be added to the list, we encourage you to contact CHEMATEC.
2018 |
Mao, Yun-Feng; Li, Zhuo; Mu, Yu-Tong; He, Ya-Ling; Tao, Wen-Quan Numerical investigation of SVOC mass transport in a tube by an axisymmetric lattice Boltzmann method Journal Article In: Building and Environment, vol. 128, pp. 180 - 189, 2018, ISSN: 0360-1323. Abstract | Links | BibTeX | Tags: Adsorption boundary condition, Airflow, Axisymmetric model, Lattice Boltzmann method, Semi-volatile organic compounds @article{MAO2018180,This paper presents an adsorption boundary condition based on linear adsorption isotherm for Lattice Boltzmann (LB) model. An axisymmetric 2-D LB model is built for an axisymmetric device. The model is used to study the effects of surface adsorption and airflow on SVOC mass transport in the device. In terms of surface adsorption, the research is divided in two parts: pure diffusion and convection-diffusion. The results show that the simulated data based on the presented adsorption boundary agree well with experimental data. In both the pure diffusion and advection-diffusion process, surface adsorption has no impact on the steady-state concentration, but it affects the time to reach steady state. Airflow greatly reduces both the time to reach steady state and the steady-state concentration. An exponential relationship involving hm, ACH and velocity is proposed and verified experimentally. Discussion on the parameter n in the exponential relation is conducted. |
2016 |
Wu, Yaoxing; Cox, Steven S; Xu, Ying; Liang, Yirui; Won, Doyun; Liu, Xiaoyu; Clausen, Per A; Rosell, Lars; Benning, Jennifer L; Zhang, Yinping; Little, John C A reference method for measuring emissions of SVOCs in small chambers Journal Article In: Building and Environment, vol. 95, pp. 126 - 132, 2016, ISSN: 0360-1323. Abstract | Links | BibTeX | Tags: DEHP, Inter-laboratory study, Phthalates, Reference method, Semi-volatile organic compounds @article{WU2016126,Semi-volatile organic compounds (SVOCs) are indoor air pollutants that may have significant adverse effects on human health. Although emissions of volatile chemicals from building materials and consumer products are usually characterized in small chambers, few chamber studies have been conducted for SVOCs due to the challenges associated with analysis and the lack of validation procedures. There is an urgent need for a reliable and accurate chamber test method to verify these measurements. A reference method employing a specially-designed chamber has been developed and is undergoing extensive evaluation. A pilot inter-laboratory study (ILS) has been conducted with six laboratories performing chamber tests under identical conditions for di-2-ethylhexyl phthalate (DEHP). Results from this study showed inter-laboratory variations of 24% for DEHP emission rates, with closer agreement observed among intra-laboratory measurements for most of the participating laboratories. A mechanistic emission model fits well to the measured concentration profiles, demonstrating the feasibility of the proposed reference method to independently assess laboratory performance and validate SVOC emission tests. |
2013 |
Hu, Kang; Chen, Qun; Hao, Jun-Hong Influence of suspended particles on indoor semi-volatile organic compounds emission Journal Article In: Atmospheric Environment, vol. 79, pp. 695 - 704, 2013, ISSN: 1352-2310. Abstract | Links | BibTeX | Tags: Adsorption, Indoor air, Semi-volatile organic compounds, Suspended particle, Transport mechanism @article{HU2013695,Semi-volatile organic compounds (SVOCs) have been attracting more and more attentions to many researchers in these years. Because SVOCs have a strong tendency for adsorption to suspended particles, we take the effect of suspended particles into account to study the transport mechanism of SVOCs in the air. We establish a mathematical model to describe the transport mechanism of SVOCs, and study the transport processes of both gas- and particle-phase di-2-ethylhexyl phthalate (DEHP) in Field and Laboratory Emission Cells (FLECs). The predictions by the proposed model not only fit well with the experimental data of previous studies, but also show that the gas-phase DEHP concentration increases rapidly in the first few seconds and increases slowly during the following 200 days due to different transport mechanisms in the two periods. Meanwhile, when the particle radiuses are of the order of micron and the air changes per hour (ACH) is large enough, the characteristic time for DEHP getting gas/particle equilibrium is much longer than the residence time of a particle in the flow field, and thus there is no significant influence of suspended particles on the total concentration of DEHP in the air. Oppositely, the influence of particles on DEHP emission will be enhanced for a cycling air flow system with a small ACH, where increasing ACH will reduce the concentrations of particle-phase SVOCs. Besides, if the particle radiuses are of the order of nanometer, decreasing the particle radiuses will shorter the characteristic time for DEHP getting gas/particle equilibrium, and finally increase the particle-phase concentration of DEHP. |