Thermophysical characterisation of tropical wood used as building materials: With respect to the basal density

Ngohe-Ekam, Paul-Salomon; Meukam, Pierre; Menguy, G.; Girard, Philippe

doi:10.1016/j.conbuildmat.2005.06.017

Cited by 30 publications

(7 citation statements)

References 4 publications

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“…Taking into account the tabular values of the thermal conductivity coefficients of the source materials used for the tested samples (dry and wet clay k table marl = 0,15 ÷ 1,8 W/(m.K); sand with 10% humidity k table sand = 0,97 W/(m.K); straw k table straw = 0,048 W/(m.K), the samples were found to have a coefficient of thermal conductivity which is within the range of the measurement device [10].…”

Section: From the Experimental Researchmentioning

confidence: 79%

A study of the thermal properties of an alternative straw-containing building material

2020

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Thermal comfort in buildings is usually achieved through sustainable materials obtained from natural sources, which justifies their use for developing building mixtures. Many natural materials were used as early as in ancient times to build homes that are warm in winter and cool in summer: a mixture of straw, clay and sand is an example of such a material. The objective of this article is to evaluate the effect of a mixture of clay, sand and straw on thermal comfort. For the purposes of this study, several types of sample plates were made from clay and sand mixture by adding different amounts of straw. The experiments were carried out and the thermal conductivity coefficient was determined using the method of infinite flat layer. The results indicate that the combination of different amounts of straw can be considered as good reinforcement of the sand and clay matrix and is characterized by a low thermal conductivity. Furthermore, 3D modelling was performed using Finite Element Analysis (FEA) software and a predictive model of the thermal behaviour of the samples from the different mixtures was developed. The thermal field distribution and the thermal conductivity coefficient thus determined were compared with the experimental data and showed consistency.

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Section: From the Experimental Researchmentioning

confidence: 79%

A study of the thermal properties of an alternative straw-containing building material

2020

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“…Natural pozzolan and sawdust were used to achieve lighter bricks having better thermal performance. Another experimental study was conducted to determine the thermodynamic properties of tropical wood and correlate these properties with its basic density (Ngohe-Ekam et al 2006). Bentchikou et al (2007) studied the influence of the addition of recycled cellulose fibers on some physical, thermal, and mechanical properties of a composite material considered as lightweight concrete.…”

Section: Introductionmentioning

confidence: 99%

Effect of thermal insulation using leather and carpentry wastes on thermal comfort and energy consumption in a residential building

et al. 2017

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In this work, we investigate the effect of the thermal insulation by leather wastes (wet-blue chrome shavings and buffing dust) and carpentry wastes (wood shavings and sawdust) on the energy consumption of a model building using the average climatic data of the city of Casablanca (Morocco). For this study, we used the dynamic thermal simulation tool BTRNSYS 16ŵ hich predicts the thermal behavior of building and systems associated with it. Using this software, we evaluated the effect of the above material wastes on thermal comfort and building energy consumption. The type and the thickness of the materials were considered as variants to choose the better solution. The average temperatures of building supposed thermally insulated compared to those obtained without insulation clearly show the thermal insulation ability of tested materials during the cold and warm periods of the year. Increasing the thickness of the insulator makes locals increasingly comfortable. Because of their performance, leather and carpentry wastes can compete with conventional insulating materials such as polystyrene and cork.

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“…Thereafter, transient techniques, such as the laser flash method [8], transient plane source technique [9], and transient hot wire method [10], were developed. The main factors that significantly affect thermal conductivity of wood are density, temperature and moisture content [11] [12].…”

Section: Introductionmentioning

confidence: 99%

Study of Thermal Properties of Some Selected Tropical Hard Wood Species

Aggrey-Smith¹,

Preko²,

Owusu³

2016

IJMSA

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The uses of wood and wood-based materials in everyday life ranging from domestic to industrial purposes have called for renewed updating of the information and knowledge on various thermal properties of the materials at various stages and classifications. This paper investigates the thermal properties (specific heat capacity and thermal conductivity) of some selected tropical hard wood species using the method of mixtures and the Lee's Disk method respectively. The results show that the thermal conductivity of the selected wood species fall within the general range of 0.1-0.8 W/mK for tropical wood materials, with Celtis mildraedii having the least thermal conductivity of 0.08W/mk and Strombosia glaucescens the highest value of 0.392 W/mK. The specific heat capacity was highest for Holorrhena floribunda (1.97 J/g.K) and the lowest for Pterygota macrocarpa (1.01 J/g.K). These results can be used for testing the validity and efficiency of hard woods used for domestic and industrial applications.

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Thermophysical characterisation of tropical wood used as building materials: With respect to the basal density

Cited by 30 publications

References 4 publications

A study of the thermal properties of an alternative straw-containing building material

A study of the thermal properties of an alternative straw-containing building material

Effect of thermal insulation using leather and carpentry wastes on thermal comfort and energy consumption in a residential building

Study of Thermal Properties of Some Selected Tropical Hard Wood Species

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