This thesis deals with a comparative efficiency analysis of measures that are most frequently used in building practice to eliminate typical thermal bridges. The analysis complies with the requirements specified in the Rules on Efficient Use of Energy in Buildings (PURES, 2010) with reference to Technical Guideline TSG-1-004:2010, Efficient Use of Energy. Efficiency calculations for individual measures used to eliminate a thermal bridge were conducted with the THERM 7.3 (LBNL, 2014) computer application. The efficiency analysis was carried out on the basis of four most common types of thermal bridges experienced in residential homes. I started by analysing the base case of a thermal bridge without any remedial measure used, and continued with at least two most frequently used solutions for each of the four cases of thermal bridges. Through calculations made for these measures, I obtained the needed base information for further analysis. The analysis showed that the position of thermal insulation is of crucial importance and represents the main reason for variances in results. I have found that the position of window installation is crucial for eliminating the thermal bridge at the window-wall junction. The only really efficient measure for elimination of a thermal bridge at the building junction of a balcony with external and the inter-floor slab is the »interruption« of the reinforced concrete plate with a structural thermal break element. Thermal bridge at the
junction of an inter-floor slab and external wall can be eliminated by considering the limitation of U-factor (thermal transmittance factor) prescribed in TSG-1-04:2010, that is by sufficient thickness of the heat insulation envelope of a building. Correct positioning of heat insulation is also of key importance for elimination of a thermal bridge on the junction between outer wall and sloped roof.
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