Study of Air Velocity and Turbulence Effects on Organic Compound Emissions From Building Materials/Furnishings Using a New Small Test Chamber

Js, Zhang; Shaw, C.Y.; Kanabus-Kaminska, J. M.; MacDonald, RA; Magee, R.J.; Lusztyk, E.; Weichert, HJ

doi:10.1520/stp15621s

Cited by 25 publications

(10 citation statements)

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“…A small-scale environmental chamber with the controlled mean air velocity (Zhang et al, 1996) has been used to measure the VOC emissions from the wood stain (Yang et al, 2001b). The purpose of the test was to obtain the reference emission data under a set of pre-defined environmental conditions, and to estimate the unknown property data of the "wet" source (D m0 and D s ).…”

Section: Resultsmentioning

confidence: 99%

“…He speculated that when a paint was applied to a realistic substrate (e.g., gypsum board), the mechanism of emission may be evaporation and/or diffusion controlled and their relative proportions change over time. Zhang et al (1996) and Zhang and Haghighat (1997) designed small-scale chambers that can provide controlled mean air velocity and turbulence level over the surface of the tested material. They both found that for "wet" sources, the emission rates were higher during the initial period of testing at the higher surface velocity, and became lower or undistinguishable near the end.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Environmental and Test Conditions on VOC Emissions from “Wet” Coating Materials

Yang¹,

Chen²,

Zeng³

et al. 2001

Indoor Air

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In this paper, numerical simulations have been conducted to study the effects of key environmental and test conditions (air velocity, temperature, film thickness, and sample application time) on volatile organic compound (VOC) emissions from a "wet" coating material (wood stain). Simulation results indicate that air velocity and sample application time only significantly affect the emission profiles in the early stage. Film thickness, on the other hand, affects long-term emissions. Temperature can affect both the short-term and long-term emissions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Environmental and Test Conditions on VOC Emissions from “Wet” Coating Materials

Yang¹,

Chen²,

Zeng³

et al. 2001

Indoor Air

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“…In this phase the VOC off-gassing rate decreases and so does the decay rate. The dominant emission mechanism in this phase is believed to be the internal diffusion of VOCs through the substrate [4,5,6]. Previous studies have also found that the emissions of "wet" materials are likely to depend on environmental conditions (e.g., temperature, air velocity, turbulence, humidity, VOC concentration in air) and also physical properties of the material and the substrate (e.g., diffusivity).…”

Section: Introductionmentioning

confidence: 99%

A mass transfer model for simulating volatile organic compound emissions from ‘wet’ coating materials applied to absorptive substrates

Yang

Chen

Zeng

et al. 2001

International Journal of Heat and Mass Transfer

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1016/S0017-9310(00)00227-1International Journal of Heat and Mass Transfer, 44, 9, pp. 1803-1815, 2001 AbstractA numerical model has been developed to simulate volatile organic compound (VOC) emissions from "wet" coating materials. The model considers the VOC mass transfer process in the air and material-air interface, and diffusion in the material film and also in the substrate. Our numerical simulations confirmed that the emissions from "wet" materials applied to an absorptive substrate are dominated by evaporation at the beginning followed by internal diffusion, which had been hypothesized based on previous experimental data. The numerical model has been validated based on the data from small-scale environmental chamber tests.

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“…VOCs are of particular concern in indoor air, as almost all human VOC exposure occurs indoors (Arulneyam and Swaminathan, 2004). VOCs are primarily sourced within the indoor environment from off-gassing from building materials, furnishings (Zhang et al, 1996), solvents (de Gennaro et al, 2015), plastics and cleaning products (Schlink et al, 2010). Building ventilation rates will have a major influence on the levels of VOCs in a building, and due to the heterogeneity amongst buildings and indoor activities, the composition and levels of VOCs are highly variable amongst indoor environments (Cooke, 1991).…”

Section: Volatile Organic Compoundsmentioning

confidence: 99%

Towards practical indoor air phytoremediation: A review

2018

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Indoor air quality has become a growing concern due to the increasing proportion of time people spend indoors, combined with reduced building ventilation rates resulting from an increasing awareness of building energy use. It has been well established that potted-plants can help to phytoremediate a diverse range of indoor air pollutants. In particular, a substantial body of literature has demonstrated the ability of the potted-plant system to remove volatile organic compounds (VOCs) from indoor air. These findings have largely originated from laboratory scale chamber experiments, with several studies drawing different conclusions regarding the primary VOC removal mechanism, and removal efficiencies. Advancements in indoor air phytoremediation technology, notably active botanical biofilters, can more effectively reduce the concentrations of multiple indoor air pollutants through the action of active airflow through a plant growing medium, along with vertically aligned plants which achieve a high leaf area density per unit of floor space. Despite variable system designs, systems available have clear potential to assist or replace existing mechanical ventilation systems for indoor air pollutant removal. Further research is needed to develop, test and confirm their effectiveness and safety before they can be functionally integrated in the broader built environment. The current article reviews the current state of active air phytoremediation technology, discusses the available botanical biofiltration systems, and identifies areas in need of development.

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Study of Air Velocity and Turbulence Effects on Organic Compound Emissions From Building Materials/Furnishings Using a New Small Test Chamber

Cited by 25 publications

References 0 publications

Effects of Environmental and Test Conditions on VOC Emissions from “Wet” Coating Materials

Effects of Environmental and Test Conditions on VOC Emissions from “Wet” Coating Materials

A mass transfer model for simulating volatile organic compound emissions from ‘wet’ coating materials applied to absorptive substrates

Towards practical indoor air phytoremediation: A review

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