Fossil fuels including petroleum, coal and natural gas are being currently used as energy sources resulting in global warming. Energy consumed by buildings accounts for about 40% of the total energy consumption. Further, heat losses through windows inside buildings account for 20-40% of cooling and heating loads. In addition, various studies on energy saving are being carried out. In the present study, tightness of windows has been analyzed according to KS F 2292 by using sliding and high-performing lift sliding windows. Further, TRNSYS17 has been used to analyze infiltration and heating load with respect to lock operation and location.
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