The assignment is focused on the influence of an adequate ventilation system on the energy efficiency of an educational institution and the comfort of it's users. After an overview of the theoretical framework regarding ventilation and it's influence on energy usage and air quality, we took a look at the problem from a practical point of view. In a selected kindergarten we measured quantity of fresh air supplied by the existing ventilation system along side with temperature and concentration of carbon dioxide, in 5 different playrooms. We then compared the measured values with values demanded by the right, law abiding regulations. For the purpose of analysing the energy efficiency, we used a software called PURES 3, which refers to the Regulations of efficient energy use in buildings (O.J. RS, No. 70/22, 161/22, 129/23). With the help of the aforementioned program, we analysed our building in it's current state, taking into account the measured values of fresh air intake and in it's renewed state, where the values of fresh air intake correspond with the demands of the Regulations of ventilation and air conditioning in buildings (O.J. RS, No. 42/02, 105/02).
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