Comparison of formaldehyde emission from building finishing materials at various temperatures in under heating system; ONDOL

Kim, Sumin; Kim, Hyun Joong

doi:10.1111/j.1600-0668.2005.00368.x

Cited by 83 publications

(47 citation statements)

References 14 publications

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“…Sin embargo, se identificó una mayor concentración de formaldehído en viviendas con muebles de madera maciza, aglomerada o contrachapada (plywood, término en inglés). Se espera que la emisión de formaldehído disminuya conforme pasa el tiempo (Kim y Kim 2005), sin embargo la madera es una de sus principales fuentes de emisión en interiores.…”

Section: Discussionunclassified

Formaldehído en Viviendas Urbanas en Salvador, Bahía - Brasil

Pineda

Prata

Cardoso

et al. 2017

Rev. Int. Contam. Ambie.

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Palabras clave: aldehídos, contaminación del aire en interiores, exposición a riesgos ambientales RESUMEN El formaldehído es un contaminante común en los espacios interiores. El objetivo de este estudio fue identificar la concentración de formaldehído en viviendas urbanas y la posible relación de las fuentes potenciales intramuros con dicha concentración. Se utilizó un mé-todo transversal anidado en un estudio longitudinal que investiga factores asociados con el asma y la alergia en niños escolares en Salvador. Entre febrero de 2007 y julio de 2008 se visitaron las viviendas de 1168 niños (4 -13 años) para recolectar información sobre las características de las casas. Para la determinación de formaldehído gaseoso se utilizó un procedimiento fluorimétrico con el reactivo Fluoral P. Se evaluaron los indicadores de ventilación, fuentes de formaldehído y exposición al humo del cigarro según los niveles de formaldehído a través de una regresión logística, en la que se calculó la razón de productos cruzados (RPC) con un intervalo de confianza (IC) de 95 %. La concentración de formaldehído en general fue baja (media 0.80 µg/m 3 ). Un mayor número de fuentes potencialmente emisoras de ese compuesto (RPC 1.30; 95 % IC 1.03-1.65), así como las mejores condiciones de ventilación (RPC 1.35; 95 % IC 1.07-1.70), estuvieron asociadas con una mayor concentración de formaldehído. Mientras que en las viviendas donde habitaban fumadores, la concentración de formaldehído fue menor (RPC 0.69; 95 % IC 0.52-0.90). El nivel de concentración del formaldehído en las viviendas estudiadas en Salvador fue inferior a los niveles máximos aceptables nacional e internacionalmente para ambientes interiores. Las características de las viviendas influyeron en la concentración de dicho compuesto. El método de muestreo ambiental utilizado permitió la determinación del formaldehído con suficiente confiabilidad.Key words: aldehydes, indoor air contamination, exposure to environmental risks Rev. Int. Contam. Ambie. 33 (2) 183-197, 2017 DOI: 10.20937/RICA.2017 N.I. Soza Pineda et al. 184 ABSTRACTFormaldehyde is a common contaminant in indoor environments. The objective of the present study was to identify formaldehyde concentrations in urban households and to investigate a possible association between the formaldehyde concentration and potential indoor sources. This is a cross-sectional study nested within SCAALA, a large longitudinal study conducted to investigate factors associated with asthma and allergy in schoolchildren in Salvador. The homes of 1168 children from 4 to 13 years old were visited between February 2007 and July 2008 to collect data on the household characteristics. Fluorometric determination of gaseous formaldehyde was conducted using the Fluoral-P reagent. Logistic regression with calculation of odds ratios and their respective 95 % confidence intervals (95 % CI), was used to evaluate ventilation, sources of formaldehyde, and exposure to cigarette smoke according to formaldehyde concentrations. Formaldehyde concentrations were low ...

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Section: Discussionunclassified

Formaldehído en Viviendas Urbanas en Salvador, Bahía - Brasil

Pineda

Prata

Cardoso

et al. 2017

Rev. Int. Contam. Ambie.

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“…The type of model was SEF, and the control model was DKC18. Figure 2 shows the testing environment, in the laboratory, as described by Kim and Kim (2005). In the lab, a copper pipe was installed with a narrow pitch in a cement mortar.…”

Section: Testing Environment and Equipmentmentioning

confidence: 99%

“…The heat for a radiant floor heating system is provided by hot water, which runs through an X-L pipe, an enclosed electric heating liquid pipe installed under cement mortar board (Kim and Kim 2005). The heating system controls consist of a central control and an indoor control (Olesen 2000).…”

Section: Introductionmentioning

confidence: 99%

Effects of Decorative Veneer and Structure on the Thermal Conductivity of Engineered Wood Flooring

Chen¹,

Guo²,

Ji³

et al. 2015

BioResources

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This paper explores the thermal conductivity of engineered wood flooring, which is widely used in world market. The effects of decorative veneer type and structure on the thermal conductivity of engineered wood flooring were studied. Four decorative veneer types and three different structures of engineered wood flooring served as test specimens. All samples were placed in a laboratory simulating a heating system environment, of which the temperature should be measured three times every five minutes. The temperature differences between the upper and lower surfaces were as follows: cherry > maple > birch > eastern black walnut. Three types of structures also showed differences in temperature changes, based on five-minute observations. The larger the decorative veneer's density, the higher the thermal conductivity, and the faster the heat transferred, meaning less heat was lost. The thermal conductivity of three-layer engineered wood flooring, with decorative veneer made of sawn wood, exhibited the best properties. The second best of the three samples was the three-layer engineered wood flooring with decorative veneer made of thick veneer and plywood. Finally, a multilayered engineered wood flooring performed the worst. The engineered wood flooring for use in heating systems should be chosen for its larger density of decorative veneer made of sawn wood.

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“…After occupancy, the concentrations were higher in the winter than in the summer (Chun et al, 2005). Kim et al (2005) has investigated the effect of various temperatures on formaldehyde emission from flooring materials by the desiccator method, and also shown that flooring materials at high temperature had less formaldehyde emission rates than flooring materials at low temperature after four weeks. Zhang et al (2007) showed that temperature has significant effect on the VOC emission parameters of dry building materials by experimental and theoretical analysis.…”

Section: Introductionmentioning

confidence: 99%

VOC Emission from Building Materials in Residential Buildings with Radiant Floor Heating Systems

Kim

Kang

Choi

et al. 2012

Aerosol Air Qual. Res.

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The emission rates of volatile organic compounds (VOC) from building materials and the resulting indoor concentrations are influenced by temperature. Radiant floor heating systems are widely used in most residential buildings in Korea, and VOC emissions from flooring materials increase as the floor temperature rises. In this study, a numerical model is presented to evaluate the VOC emissions from building materials at different temperatures depending on the heating conditions. A coupled model is developed to simulate the temperature variation of building materials and VOC emissions in the floor heated space, which combines the building heat transfer model for materials and indoor air temperature with the mass transfer model for VOC emissions and indoor VOC concentrations. The model was validated by a mock-up test, and it was then used to examine the emission characteristics from flooring materials under different heating conditions. The results show that emissions of VOC from flooring materials tend to increase as the floor temperature rises during the heating condition.

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Comparison of formaldehyde emission from building finishing materials at various temperatures in under heating system; ONDOL

Cited by 83 publications

References 14 publications

Formaldehído en Viviendas Urbanas en Salvador, Bahía - Brasil

Formaldehído en Viviendas Urbanas en Salvador, Bahía - Brasil

Effects of Decorative Veneer and Structure on the Thermal Conductivity of Engineered Wood Flooring

VOC Emission from Building Materials in Residential Buildings with Radiant Floor Heating Systems

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