Abstract
In this study, five different cities were selected from the five climatic zones according to Turkish standard TS 825, and insulation thicknesses of exterior walls of sample buildings were calculated by using optimization. Vertical perforated bricks with density of 550 kg/m3 and 1000 kg/m3 were chosen within the study content. Glass wool, expanded polystyrene (XPS), extruded polystyrene (EPS) were considered as insulation materials. Additionally, natural gas, coal, fuel oil and LPG were utilized as fuel for heating process while electricity was used for cooling. Life cycle cost (LCC) analysis and degree-day method were the approaches for optimum insulation thickness calculations. As a result, in case of usage vertical perforated bricks with density of 550 kg/m3 and 1000 kg/m3 resulted different values in between 0.005-0.007 m (5-7 mm) in the optimum insulation thickness calculations under different insulation materials. Minimum optimum insulation thickness was calculated in case XPS was preferred as insulation material, and the maximum one was calculated in case of using glass wool.
Highlights
Heat insulation is the most important pillar of the developed policies about the concept of energy efficiency all over the world
When the studies existed in the literature were examined, the optimum insulation thickness was calculated for the exterior walls of the building
These results during the cooling period are; 0.017-0.041 m in Izmir, 0.0000.024 m in Balıkesir, 0.000-0.017 m Konya, while it was found that the optimum economic choice for Sivas and Kars was not to use insulation Besides, in the heating plus cooling period; results are found to be 0.039-0.146 m in Izmir, 0.044-0.178 m observed in Balıkesir, 0.052-0.226 m observed in Konya, 0.0550.225 m in Sivas and 0.065-0.260 m observed in Kars
Summary
Heat insulation is the most important pillar of the developed policies about the concept of energy efficiency all over the world. The fact that the housing and building sector in Turkey consumes about 30-35% of the total energy and has a great saving potency increased the interest in the sectoral manner [1]. Energy loss and air pollution can be reduced by increasing the thickness of insulation material. It may be neither economical nor practical to use increasingly large amounts of insulation so as to achieve energy savings. A balance should be established between the insulation investment and the savings to be provided from the insulated building. When the studies existed in the literature were examined, the optimum insulation thickness was calculated for the exterior walls of the building. Kon / IJOCTA, Vol., No.2, pp.149157 (2017)
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