Calculation of cost-efectivness of solar system

U ovom radu opisan je rad solarnog sustava, potrebne komponente solarnog sustava te proračun isplativosti ugradnje solarnog sustava prema normi HRN EN 15316-4-3. U prvom djelu opisana je norma HR EN 15316-4-3 koja sadrži metodu B za izradu proračuna isplativosti ugradnje solarnih kolektora za zagrijavanje PTV-e i grijanje prostora. Drugi dio se odnosi na detaljan proračun isplativosti ugradnje solarnih kolektora na području grada Varaždina za obiteljsku kuću. Dok su u zadnjem djelu opisane odabrane komponente solarnog sustava i zaključak o investiranja u solarni sustav.The paper describes the operation of a solar system, the required solar system components, and the calculation of the cost-effectiveness of the solar system implementation according to HRN EN 15316-4-3. The first part describes the standard HR EN 15316-4-3, which contains Method B for calculating the cost-effectiveness of installing solar collectors for DHW heating and space heating. The second part refers to a detailed calculation of the cost-effectiveness of installing solar collectors in the Varaždin urban area for a family house. The final part of the paper deals with selected components of the solar system and the conclusion about investing in the same