| Title |
Regional Assessment of Heating Energy Saving Potential and Economic Feasibility of Heat Pump Adoption Strategies for Carbon Neutral Public Buildings |
| Authors |
Huijing Yan ; Doo Sam Song |
| DOI |
https://doi.org/10.6110/KJACR.2026.38.7.366 |
| Keywords |
건물에너지 성능 분석; 그린리모델링; 어린이집; 히트펌프; 투자 회수 기간 Building energy performance analysis; Building retrofit; Daycare center; Heat pump; Payback period |
| Abstract |
The global pursuit of carbon neutrality by 2050 has positioned the electrification of heating systems as a critical strategy for reducing greenhouse gas emissions in the building sector. Heat pumps are particularly promising for green retrofits of public buildings, though their performance varies with regional climate. This study assesses the heating energy consumption, energy cost, and payback period when replacing conventional gas boilers with heat pump systems in an existing public daycare center across South Korea's central, southern, and Jeju regions. To ensure a consistent regional comparison, energy performance simulations were conducted using the ISO 13790?based Energy# model under identical building and operational conditions. The results indicate that heat pump application reduces annual heating energy consumption by approximately 73% and heating energy costs by about 33% compared to gas boilers. Economic analysis reveals a payback period of approximately 3.5 years in central regions and around 6 years in southern and Jeju regions, primarily due to variations in regional heating demand. These findings confirm the economic viability of adopting heat pumps and offer quantitative data to support region-specific deployment strategies for decarbonizing public buildings. |