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    Economical and Environmental Effects of Thermal Insulation Thickness in Four Different Climatic Regions of Turkey
    (Int Journal Renewable Energy Research, 2011) Gurel, Ali Etem; Dasdemir, Ali
    In the countries which supply big amount of their energy needs by import like Turkey using the energy economically is important. Thermal insulation technologies in buildings are the main method for using energy economically. However, choosing the thickness of the insulation material redundant causes high insulation costs. For this reason, an optimum point provides the highest gain in insulation applications is the subject. In this study, for Antalya, Manisa, Ankara and Sivas in the four climate regions in Turkey and optimum insulation thickness, energy saving and payback period in using two different insulation materials (extruded polystrene and rock wool) and five different kinds of fuel (coal, natural gas, fuel-oil, LPG, electricity) were calculated. In addition to this, an analysis of insulation thickness of the harmful emissions of the gas like CO2 and SO2 was made. The results of the study showed that the optimum insulation thickness vary between 0.016 and 0.145 m, energy savings vary between 1.79 $/m(2) and 103.44 $/m(2) and the payback period vary between 1.268 years and 6.022 years depending on the city and type of fuel. Environmental impacts of high used coal fuels were observed during the combustion, and emissions of CO2 and SO2 revealed decreases between 67%-75%.
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    The Effect of External Wall Optimum Insulation Thickness on Energy Saving and Air Pollution For karabk
    (Karabuk Univ, 2012) Gurel, Ali Etem; Cay, Yusuf; Dasdemir, Ali; Kucukkulahli, Enver
    Heat insulation applications carried out on external walls of building provides energy saving by decreasing fuel consumption and also quite important in decreasing emission which results from fossil-based fuel usage and causes air pollution. In this study, economic and environmental analyses were done for determination of external wall optimum thickness in using coal and natural gas usage in Karabuk. Economic extent of the study was done with P-1-P-2 method which is based on life cycle cost analysis (LCCA). The results show that optimum insulation thickness and energy saving are 0.134 m and 117.14 TL/m(2) respectively when coal is used as a fuel. These values are 0.116 m and 88.39 TL/m(2) when natural gas is used as fuel. When the effects of optimum insulation thickness on air pollution are observed, CO2 and SO2 emissions calculated on external wall of uninsulated building decreased up to 85.4% at the point of optimum insulation thickness according to fuel type.