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Información tecnológica

versão On-line ISSN 0718-0764

Resumo

BORBON, Ana C; CABANILLAS, Rafael E  e  PEREZ, Jesús B. Experimental Determination and Numerical Contrast of Thermal Resistance in a Hollow Concrete Block Wall. Inf. tecnol. [online]. 2010, vol.21, n.6, pp.163-176. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642010000600017.

This paper presents design and construction of an experimental test to determine the thermal resistance of a hollow concrete blocks wall, according to the international standard known as guarded hot píate. The construction procedure and implementation of the device are described, reproducing operations conditions for buildings located in warm dry climate, and the thermal resistance was experimentally and numerically determined. The results were found by applying controlled temperature differences on both sides of the wall between heating and cooling temperature zones, in steady state conditions. Experimental and numerical results show variations in the valué of thermal resistance, ranging from 0.15 to 0.19 °C m2/W. Valúes of the thermal resistance were fitted to an empirical expression as function of the temperature difference between the walls and the average temperature of the wall.

Palavras-chave : thermal resistance; block wall; stable state; erimental test.

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