Prilagoditev ogrevalnega sistema po prenovi toplotnega ovoja stavbe

V magistrskem delu je obravnavana prilagoditev ogrevalnega sistema po prenovi zunanjega toplotnega ovoja stavbe s poudarkom na prikazu metodologije prilagoditve centralnega ogrevalnega sistema z radiatorji. Po energijski prenovi stavbe se zmanjšajo potrebe po ogrevanju. Obstoječi radiatorji postanejo predimenzionirani, kar omogoča znižanje temperature dovodne ogrevalne vode oziroma masnega pretoka ogrevalne vode. Pri nižanju temperature dovodne ogrevalne vode smo omejeni zaradi neenakomernega zmanjšanja toplotne moči radiatorjev v posameznih prostorih. Izdelali smo program v Microsoft Excelu, da smo lahko določili obstoječemu ogrevalnemu sistemu znižano temperaturo dovodne ogrevalne vode in masni pretok ogrevalne vode. Za izbrano stavbo s projektnim temperaturnim režimom 90/70 je nova temperatura dovodne ogrevalne vode 46 °C. Izračunani masni pretok ogrevalne vode, ki ga mora zagotoviti obtočna črpalka znaša 0,5248 kg/s. This master thesis examines adjustment of the heating system after refurbishment of the external thermal envelope of the building. It focuses on methodology, based on the adjustment of central-based heating system with radiators. With energy refurbishment of buildings, heating requirements are decreased. Existing radiators become oversized and heating water supply temperature or heating water mass flow can be reduced. The thermal power of radiators in individual rooms lowers unevenly which causes some limitations when decreasing the heating water supply temperature. Using a self-designed program within Microsoft Excel, we managed to determine the lowered heating water supply temperature and heating water mass flow temperature of an existing heating system. For chosen building with project temperature regime 90/70, the new heating water supply temperature is 46 °C. The calculated heating water mass flow, which the circulating pump must acquire, is 0,5248 kg/s.