Vodice The Imperial Park Hotel 26 - 28 March 2025
27 th International Conference on Heating, Cooling and Air-conditioning
ABSTRACT
PAPER
Goran STUNJEK, mag. ing. mech. University of Zagreb Faculty of Mechanical Engineering and Naval Architecture Ulica Ivana Lučića 5 10 000 Zagreb Croatia e-mail: goran.stunjek@fsb.unizg.hr
MP4
PRESENTATION VIDEO
He graduated in 2017 from the undergraduate and in 2019 from graduate studies in mechanical engineering at the Faculty of Mechanical Engineering and Naval Architecture of the University of Zagreb (FSB). Today, he is a project assistant at the FSB's Chair of Power Plants and Energy Engineering of the Department for Power Plants, Energy Engineering and Environment.
Gordana MIKULČIĆ KRNJAJA City of Velika Gorica, Velika Gorica, Croatia dr. sc. Marko MIMICA University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia dr. sc. Nikola MATAK University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia dr. sc. Stanislav BOLDYRYEV University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia izv. prof. dr. sc. Goran KRAJAČIĆ University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia
Mario MIHETEC, dipl. ing. University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia Roko MUCIĆ University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia Andrija GLAVAŠ University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia Dominik RAŠIĆ, mag. ing. mech. Cirkularni energetski resursi d.o.o., Zagreb, Croatia Andrej MAJDIŠ, dipl. ing. HEP Toplinarstvo d.o.o., Zagreb, Croatia Mario MARJANOVIĆ, dipl. ing. HEP Toplinarstvo d.o.o., Zagreb, Croatia
OPTIMIZING HEAT PUMP INTEGRATION FOR THE DECARBONIZATION OF DISTRICT HEATING IN VELIKA GORICA - META BUILD
The decarbonization of district heating systems is crucial for achieving Europe’s climate goals, par- ticularly in urban areas. As part of the European Union-funded META BUILD project, Velika Gorica, Croatia, is transforming its district heating net- work by integrating renewable energy sources, with a strong focus on heat pump technology. The city aims to reduce carbon dioxide emissions by 40 percent by 2030 through the adoption of ad- vanced energy-efficient solutions. A comprehensive analysis is being conducted to determine the most suitable heat pump technolo- gy, evaluating water-to-water, ground-to-water, and air-to-water systems based on cost-effective- ness, efficiency, and integration potential. These
technologies will replace fossil fuel-based heating, supported by photovoltaic thermal systems and thermal energy storage. Additionally, energy effi- ciency improvements, such as enhanced building insulation and smart controls, will optimize system performance and minimize heat losses. By combining innovative heat pump applications with digital optimization tools, the project ensures real-time performance monitoring and operation- al flexibility. The findings from Velika Gorica will serve as a model for other European cities seeking sustainable district heating solutions. META BUILD’s approach supports the European Union’s climate and energy objectives, demonstrating a scalable pathway for low-carbon urban energy systems.
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2nd Thematic Section - FRAN BOŠNJAKOVIĆ DAY
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