Vodice The Imperial Park Hotel 26 - 28 March 2025
27 th International Conference on Heating, Cooling and Air-conditioning
ABSTRACT
PAPER
Juraj KUZLE, mag. ing. mech. University of Zagreb Faculty of Mechanical Engineering and Naval Architecture Ulica Ivana Lučića 5 10 000 Zagreb Croatia e-mail: juraj.kuzle@gmail.com
MP4
PRESENTATION VIDEO
He graduated in 2022 from the undergraduate and 2024 from the graduate studies in mechanical engineering at the Faculty of Mechanical Engineering and Naval Architecture of the University of Zagreb.
prof. dr. sc. Damir DOVIĆ University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia dr. sc. Ivan HORVAT University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia
COST-OPTIMAL ANALYSIS OF THE REFERENCE MULTI-APARTMENT nZEB/ZEB BUILDING IN CROATIA
This paper presents a cost-optimal analysis of a multi-apartment nZEB/ZEB building in continen- tal part of Croatia. The case study focuses on geometry of the national reference multi-apart- ment building built after 2006, with a net usable heated area of Ak = 954,2 m 2 . The analysis con- siders 3 different insulation thicknesses of the building’s envelope - 12, 16, and 20 cm which all meet the requirements from the current technical regulation. These three different building physics scenarios are paired with both centralized and lo- calized space heating/cooling and domestic hot water (DHW) technical systems. Analyzed techni- cal systems comprise centralized gas condensing boiler, local combined gas condensing boiler, cen- tralized and local air-to-water heat pump, cen-
tralized pellet boiler, centralized chiller and local split and multisplit air conditioning units. Some of these systems are also coupled with solar thermal and photovoltaic systems. Additionally, all config- urations are studied in combination with natural and mechanical ventilation, where the latter in- cludes heat recovery. The energy performance calculations follow the procedure outlined in the national Algorithms for the energy performance of buildings calculation. The economic analysis is carried out in accordance with the Regulations 244/2012 and 2012/C 115/01. In total, the study evaluates 16 distinct combinations of technical systems, providing a comprehensive assessment of cost-optimal solutions for multi-apartment nZEB/ZEB buildings in this region.
26
2nd Thematic Section - FRAN BOŠNJAKOVIĆ DAY
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