Thermal conductivity of materials used in Ecuador's masonry by the thermal needle probe method
Keywords:
Thermal conductivity, Thermal properties, Masonry, Energy efficiencyAbstract
The construction industry in Ecuador faces a series of challenges regarding the implementation of the energy efficiency law passed in 2019. This law stipulates that the builder informs the buyers of the projects of their energy rating. Therefore, it is necessary to study and contrast the thermal properties of traditional and new building materials in the country. The main objective of this research is, through the thermal needle probe method, to obtain thermal conductivity data of materials used in bricks. This is the first time in Ecuador that such a comprehensive study about thermal conductivity in construction materials is developed. Also, the thermal needle is constructed by using basic principles and tools which reduce its cost to a minimum. The conductivity results obtained are between 0.344 and 0.986 W / m.k. Subsequently, the wheat straw bale, made from agro-industrial waste, is analyzed, obtaining that the average conductivity of this element is 0.045 W / m.k. It is concluded that it is possible to obtain the thermal conductivity of bricks by the method of the thermal needle and, that the bale of straw, with respect to the analyzed elements, is the only one that according to the Ecuadorian Standard of Construction meets the criteria of thermal insulator, so it could be constituted as an alternative for energy efficient homes.
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