20.500.12556/DiRROS-24130 Environmental evaluation of residential heating comparative life cycle assessment of two heating systems The purpose of the study is to evaluate the environmental performance of two systems for space heating and hot water provision in a residential building. In both cases, a ground-source heat pump is used. In the baseline system, the heat pump is driven by electrical power from the grid. In the alternative system, photovoltaic thermal collectors are integrated into the building for domestic hot water preparation and the production of electricity. Excess heat produced in the summer is introduced to the borehole and extracted later, in the cooler part of the year. Environmental benchmarking of the two systems was conducted using the Life Cycle Assessment method. A cradle-to-grave approach was applied, taking into account all life cycle stages of the system and its operation over 20 years. Results show that the alternative system yields significantly lower impacts in terms of Global Warming Potential (36% decrease) and Resources (36% decrease). In terms of Human Health, the decrease is minor (6%). However, in terms of Ecosystem, the alternative system shows a 47% higher impact than the baseline system. This increase is primarily attributed to the additional components required in the alternative configuration. LCA GWP heat pump thermal energy storage photovoltaic thermal collectors heating domestic hot water analiza življenjskega cikla potencial globalnega segrevanja toplotna črpalka shranjevanje termalne energije fotovoltaični toplotni kolektorji ogrevanje topla sanitarna voda true false true Molecular Diversity Preservation International Angleški jezik Slovenski jezik © 2025 by the authors Neznano 2025-11-17 12:00:43 2025-11-17 12:09:06 2025-11-18 03:43:31 0000-00-00 00:00:00 2025 0 0 str. 1-23 iss. 21, [article no.] 3977 Vol. 15 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-11-04 697 2075-5309 10.3390/buildings15213977 256169987 https://doi.org/10.3390/buildings15213977 0 aa59d000-c3a4-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=35905 RAZ_Turk_Janez_2025.pdf RAZ_Turk_Janez_2025.pdf 1 403996926F217A7944D18E62786CBECC e07403b13afa3d3200ba11214e13e63f35969f6998b80b70f4765cd1a7dd0b11 d09cc8f0-c3a5-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=35906 Zavod za gradbeništvo Slovenije 0 0 0