Energy performance analysis of buildings with solar hot water system

U ovom radu proveden je proračun godišnje isporučene i primarne energije sunčanog toplovodnog sustava za grijanje prostora i pripremu potrošne tople vode. Proračun je proveden za referentnu obiteljsku kuću, pri dvije različite razine potrebne godišnje toplinske energije za grijanje, te za klimatska područja Zagreba i Splita, kako bi se mogao ispitati utjecaj toplinske ovojnice zgrade, ali i klimatskih uvjeta na potrošnju energije. Metodologija proračuna omogućuje troškovnu optimizaciju sunčanog toplovodnog sustava varijacijom elemenata podsustava predaje te pomoćnog generatora topline. Napravljena je usporedba dobivenih rezultata s onima izračunatim prema novim prijedlozima normi iz serije prEN 15316.In this paper, the calculation of the annual delivered and primary energy of solar hot water systems for space heating and domestic hot water has been conducted. The calculation has been made for reference dwelling at two different levels of energy required for space heating, as well as for two climate areas, in order to investigate the influence of building envelope, but also of weather conditions on energy consumption. Calculation methodology enables cost optimization of solar system by changing emission subsystem elements or auxiliary heat source. A comparison of the results with those calculated according to new proposals of the norms from series prEN 15316 has been made