Energy certificate for single family houses from three different time periodes

V diplomski nalogi so opisane in analizirane tri tipične enostanovanjske hiše, ki so bile zgrajene leta 1967, 1999 in leta 2015. Za vse tri hiše je izdelana računska energetska izkaznica, za starejši dve pa so predlagani tudi ukrepi za povečanje energetske učinkovitosti. Opisana je energetska problematika s poudarkom na stavbah, zakonodaja, ki ureja področja povezana z energetsko problematiko ter zakonodaja s področja energetskih izkaznic s poudarkom na Sloveniji in deloma Evropski Uniji. Orodji za izdelavo diplomske naloge sta bila računalniška programa TEDI in TOST. Program TEDI omogoča izračun toplotne prehodnosti konstrukcijskih sklopov, program TOST pa je namenjen izračunu podatkov za energetsko bilanco stavbe po Pravilniku o učinkoviti rabi energije v stavbah, upoštevajoč SIST EN ISO 13790 in TSG-1-004:2010. Glavni namen diplomske naloge je bil izračun energetske učinkovitosti stavb ter primerjava dobljenih rezultatov. Računsko je bilo dokazano, da je nova hiša (2015) v primerjavi s starejšima energijsko zelo varčna. Porabi kar štiridesetkrat manj toplote za ogrevanje na kvadratni meter uporabne površine kot najstarejša hiša (1967) ter desetkrat manj kot hiša, ki je bila zgrajena leta 1999. Razvidno je, da že minimalna toplotna izolacija močno zmanjša potrebe po toploti, ter da je v zadnjih letih prišlo do velikega napredka v uporabi izolativnih materialov.The thesis describes and analyses the three typical single family houses, which were built in 1967, 1999 and 2015. A calculated energy performance certificate was done for all three houses. Measures were also proposed for the older two houses to increase energy efficiency. It describes issues focusing on legislation governing the areas related to energy issues and energy certificates with an emphasis on Slovenia and partly on the European Union. The computer programs TEDI and TOST were used to develop the Thesis. TEDI allows us to calculate the heat transfer coefficient of construction and TOST is used to calculate energy balance in accordance to Pravilnik o učinkoviti rabi energije v stavbah taking into account SIST EN ISO 13790 and TSG-1-004-2010. The main purpose of this study was to calculate the energy efficiency of buildings and to compare the obtained results. Analyses showed that the new house (2015) is very energy effecient in comparison with older houses. It spends forty times less heating energy per square meter of usable area as the oldest house (1967), and ten times less than the house built in 1999. It turns out that alredy minimal thermal insulation greatly reduces heat demand of the house, and that we have witnessed significat progress in use of insulation materials in last fifteen years