Abstract
Educational buildings have a significant share in the total number of buildings of public sector. Also, significant part of energy consumption belongs to these buildings. There are 15 kindergartens that are under 2 preschool institutions. Their specific annual heat consumptions are from 79.42 kWh/m2 to 491.52 kWh/m2 (from 106.02 kWh/m2 to 325 kWh/m2 for objects connected to the district heating system). The average specific annual heat consumption is about 22% more than the consumption in neighboring countries. Most kindergarten buildings were built in the '70 and '80s of the last century and do not have adequate thermal insulation. Based on the defined methodology, specific annual heat consumption of these buildings has been analyzed, priorities for reconstruction have been defined and measures for improvement of energy efficiency have been proposed. Conducted case study of implementing the proposed measures at 'Ciciban' kindergarten showed that savings could be from 36% to 58% in heat consumption.
Highlights
Na osnovu izvršenih pregleda objekata, podataka o specifičnoj potrošnji toplotne energije i sprovedene analize ustanovljeno je da većina razmatranih objekata zahteva rekonstrukciju obzirom da su samo dva objekta renovirana i dva izgrađena u prethodnih 10 godina
U okviru postojećeg stanja, koeficijent prolaza toplote ima vrednosti od 3,3 za drvenu stolariju do 5,8 za čeličnu, ugradnjom nove stolarije, koja zadovoljava maksimalne vrednosti koeficijenta prolaza toplote definisane pravilnikom, i termostatskih regulacionih ventila postiže se ušteda od 36,1%
Rad nastao kao rezultat istraživanja na projektu III 42013 - „Istraživanje kogeneracionih potencijala u komunalnim i industrijskim energanama Republike Srbije i mogućnosti za revitalizaciju postojećih i gradnju novih kogeneracionih postrojenja“, Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije
Summary
Pravilnikom o energetskoj efikasnosti zgrada, za Grad Kragujevac je usvojen broj grejnih stepen dana HDDa u iznosu od 2610 [oC dan] [17]. Stvarni broj grejnih stepen dana, koji se dobija na osnovu podataka Republičkog hidrometeorološkog zavoda, razliku je se od usvojenog, pa je u cilju što preciznijeg određivanja specifične godišnje potrošnje toplotne energije QH,nd_s [kWh/m2] korišćen izraz (1): QH ,nd _ s
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