Energy efficiency for low-energy indoor eco-friendly application through green building material

Abstract

World environment climate has changed toward unpredictable weather where average global temperature has increase up to 0.74⁰C since 1906 until 2017 [1]. This increment is indication of more heat from the sun is penetrated to our primary protector which is ozone layer. Due to this scenario, the secondary protector which is the building should play major roles in giving comfort to the human. This is where the thermal conductivity of the building material becomes important matter to study. Thermal conductivity or k-value of solid material describing the ability of heat being transfer through conduction. High k-value describes the material as highly conductive from one point to another. In another words, high k-value material is easily allow the heat transfer passed through it, in which this is not a good property for building material. The design thickness is very crucial where it will impact the cost of producing green materials. Thicker brick uses more amount of material and hence, it increase the production cost. The requirement on heat resistivity is very important for a building to prevent the building to be hot and uncomfortable. U-value for green materials wall is very low and it can block the entry of large amounts of heat and thereby cool the building rather than the clay brick wall and concrete wall.