Heating and cooling design for family house

Za obiteljsku kuću u blizini grada Varaždina izveden je projekt sustava grijanja, hlađenja te pripreme potrošne tople vode. Obiteljska kuća se sastoji od devet prostorija od kojih su osam grijane, a jedna je negrijana. Kuća je montažna, gdje imamo debljinu vanjskih zidova od 0,306 m, te debljinu unutarnjih zidova od 0,16 m. Projekt je izveden u obliku glavnog strojarskog projekta sa svim popratnim elementima (proračunom, nacrtima, izborom opreme sustava te troškovnikom). Kompletan proračun toplinskih gubitaka, toplinskih dobitaka i koeficijenta prolaza topline izveden je u programu IntegraCAD. Sustav grijanja, hlađenja te pripreme potrošne tople vode je izveden sa dizalicom topline zrak – voda. Sustav podnog grijanja je izveden po cijeloj kući osim u hodniku i ostavi. Sustav hlađenja je izveden na način da su se ugradili ventilokonvektori u dvije prostorije (kuhinja sa blagovaonicom i dnevni boravak). U slučaju prestanka rada dizalice topline ugrađen je električni zidni uređaj kao sigurnost da sustav dalje može nastaviti raditi. Po rezultatima proračuna izvršen je odabir opreme za navedeni sustav i njegov troškovnik. Na kraju je izračunat energetski certifikat koji je izrađen u programu KI Expert plus.For a family house near the city of Varaždin a project for heating, cooling and hot water preparation was carried out. The family house consists of nine rooms of which eight are heated. It is prefabricated house and has a exterior wall thickness of 0.306 m and the thickness of the inner walls of 0.16 m. The project was carried out in the form of the main mechanical project with all the accompanying elements (budget, drafts, choice of the system equipment and the system costs). The complete calculation of heat losses, thermal gains and heat transfer coefficient was performed in IntegraCAD. The heating, cooling and hot water preparation system was performed with the air – water heat pump. The floor heating system was performed throughtout the house except in the hallway and pantry. The cooling system was designed in such a way that fan-coils were installed in two rooms (kitchen with dining-room and living room). In case of heat pump malfunction, an electric water heater was installed as a safety system to ensure that the system can continue to work. The equipment system and the system costs were selected by the results of the evaluation. Finally, the energy certificate was calculated in the KI Expert plus program