Correlation between thermal conductivity and the thickness of selected insulation materials for building wall

Mahlia, T.M.I.; Taufiq, B.N.; Ismail, Razali; Masjuki, H.H.

doi:10.1016/j.enbuild.2006.06.002

Cited by 171 publications

(81 citation statements)

References 8 publications

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“…El comportamiento de k e en función de la densidad y la porosidad para las muestras estudiadas se presenta en las Figuras 2 y 3, respectivamente; de estas se infiere que a medida que la densidad se incrementa, k e aumenta; mientras que a mayor porosidad menor es el valor para k e , lo cual es consistente con lo reportado en la literatura, pues a mayor cantidad de aire presente en la muestra menor debe ser el valor de k e , ya que el aire actúa como una barrera al flujo del calor [6].…”

Section: Temperatura De Cocción (°C)unclassified

“…El conocimiento de la conductividad térmica efectiva (k e ) de un material, la cual indica la cantidad de calor (energía térmica) que pasa entre dos puntos dentro de este por unidad de área, tiempo y gradiente de temperatura [5][6][7], es de vital importancia para el cálculo de los coeficientes de impedancia térmica en los ambientes donde se utilice dicho material [8]. Para el caso de muestras en polvo, dicho parámetro depende de la distribución de tamaño de partícula, morfología, estructura y composición química [9].…”

Section: Introductionunclassified

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Efecto del tratamiento térmico en la morfología y conductividad térmica de cenizas volantes de la combustión de carbón

2014

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This paper presents the heat treatment's effect, on the effective thermal conductivity (k e ) at room temperature, of the flying dust ashes, from the Termotasajero S.A's coal combustion thermoelectric. The above mentioned thermo-physical parameter, was measured using the Thermal Properties Analyzer KD2Pro® system, which works with the linear transitory heat flow's physical principle. The samples' heat treatment, were performed using an electrical muffle Ney® Vulcan D-130 for the 1050, 1100, 1130, 1200, 1250 and 1300 °C's temperature ranges. The porosity and the apparent density were found using the standard NTC 4321-3.The samples' superficial morphology was analyzed using a scanning electronic microscopy (SEM). Our results show that as the temperature increased in the heat treatment, the samples changed color from a dark brown to a beige gray. It also decreased the porosity percentage, due to the vitrification process, increasing the density too, and consequently the thermal conductivity effectiveness. The k e values found are very important for the thermal transmittance calculations' coefficient (U-value), in the heat transfer processes, where these ashes are used.

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Section: Temperatura De Cocción (°C)unclassified

Section: Introductionunclassified

Efecto del tratamiento térmico en la morfología y conductividad térmica de cenizas volantes de la combustión de carbón

2014

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“…Other researchers have noted that urban greening efforts like growing short vegetations also can alter urban temperature through transpiration [6], [35]. Although heat island effects can raise the level of thermal discomfort, the strategic location and landscape of hot and humid tropics offers the potential of shading and transpirational [42].…”

Section: A Plants and Vegetationmentioning

confidence: 99%

Developing a Sustainable City in a Tropical Area to Create a Balance between Vegetation and Water Bodies

Mirrahimi¹,

Ibrahim²,

Surat³

2015

IJET

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Abstract-This paper aims to investigate the effects of using natural resources that incorporates the basis of a sustainable city design in efforts to improve the urban thermal comfort in a hot and humid climate. Currently, one of the most crucial world environmental issues is urbanization in a hot and humid climate. In tropical areas, if the urban landscape is poorly designed, it will cause outdoor thermal discomfort. Natural plants and water bodies in the hot and humid landscape has a direct influence over the temperature of urban cities. Water bodies, for example, are able to lower the atmospheric temperature; whereas plants also can affect the surroundings passively. The effects of wet surfaces are increased if there is a presence of a shadow. Therefore, vegetation and water bodies are used in designing a sustainable city in order to increase the quality of outdoor thermal comfort in a hot and humid climate. This is hoped to provide a better and more comfortable human living environment.

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“…According to Mahlia et al [17], the optimum insulation thickness is normally determined by conducting life cycle cost or cost benefit analysis due to the installation of insulation material as follows:…”

Section: Thermal Insulationmentioning

confidence: 99%

Housing developers and home owners awareness on implementation of building insulation in Malaysia

Yacouby

Khamidi

Teo

et al. 2011

Management of Natural Resources, Sustainable Development and Ecological Hazards III

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Buildings account for 40% of energy consumption. In a hot humid climate zone a great deal of this energy is consumed in cooling and air-conditioning. Thermal insulation provides a practicable and cost-effective means of reducing system electricity consumption and CO 2 emissions. Building insulation refers to any construction material in a building used as insulation for thermal purposes. This term also applies to acoustic insulation, fire protection and impact insulation. This paper presents a study on awareness of housing developers and home owners on the utilization of insulation materials in the building industry. The research aims to address and determine challenges facing the implementation of building insulation techniques in Malaysia, where currently houses with insulation represent less than 2% of the total stock of 4.5 million units. In this study two methods have been implemented i.e. (1) a quantitative survey in the form of two different sets of structured questionnaires for housing developers and end users, and (2) qualitative research in the form of a semi-structured interview targeting various professionals and stakeholders from the construction industry. The study suggests that around 75% of house occupants use airconditioner units to improve the indoor thermal comfort and only 22% of the respondents were aware of the effects of insulation on thermal performance of

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Correlation between thermal conductivity and the thickness of selected insulation materials for building wall

Cited by 171 publications

References 8 publications

Efecto del tratamiento térmico en la morfología y conductividad térmica de cenizas volantes de la combustión de carbón

Efecto del tratamiento térmico en la morfología y conductividad térmica de cenizas volantes de la combustión de carbón

Developing a Sustainable City in a Tropical Area to Create a Balance between Vegetation and Water Bodies

Housing developers and home owners awareness on implementation of building insulation in Malaysia

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