| Title: | The effect of surrounding topography on calculated solar gains in buildings using dynamic building energy modeling (BEM) |
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| Authors: | ID Hausmeister, Alen (Author)
ID Ogrin, Matej (Author)
ID Gregorčič, Tim (Author)
ID Malovrh Rebec, Katja (Author) |
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| Files: |  URL - Source URL, visit https://doi.org/10.1007/978-3-032-14019-7_13
 PDF - Presentation file. (1,47 MB, This file will be accessible after 21.02.2027)
MD5: 8C0B97776508FC740E28149ED18ABEC4
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| Language: | English |
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| Typology: | 1.08 - Published Scientific Conference Contribution |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| Abstract: | This paper presents a methodology for integrating terrain shadows of micro-locations into building energy modeling (BEM) for topographically diverse regions. Dynamic energy simulations rely on high-resolution weather data sourced from reference locations that cover a climate zone. As soon as the micro-location of the simulated building is away from the weather reference site, topographic shading can trigger deviations. This study developed a three-dimensional reproduction of the micro-location’s surrounding terrain as a simplified ring model based on available horizon height captured from PVGIS. In a radius of 20 km, 4 Slovenian cities from the same climatic zone have been analyzed and compared with a baseline calculation. When comparing solar gains (SG) of chosen micro-locations, a tendency is noticeable—the lower the Sky-view Factor (SVF), the higher the SG deficit. Additional calculations have been conducted for different SVF/aspect ratios and used in a geographical survey. Results show that at least half of the Slovenian land surface which is inhabited by 21% of the population, has characteristics where topography influences calculated Solar Gains (SG). In those areas, the potential SG deficit is distributed from barely perceptible to more than 25% in certain areas. This approach enhances the precision of BEM in topographically varied landscapes and can inform better design and planning decisions. |
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| Keywords: | hourly dynamic method, solar gains, sky-view factor, elevated horizon, BIM |
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| Publication status: | Published |
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| Publication version: | Author Accepted Manuscript |
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| Publication date: | 22.02.2026 |
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| Publisher: | Springer |
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| Year of publishing: | 2026 |
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| Number of pages: | Str. 177-193 |
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| PID: | 20.500.12556/DiRROS-31910  |
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| UDC: | 551.52:69(497.4) |
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| ISSN on article: | 2366-2565 |
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| DOI: | 10.1007/978-3-032-14019-7_13 |
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| COBISS.SI-ID: | 270934275 |
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| Note: | Soavtorji Matej Ogrin, Tim Gregorčič, Katja Malovrh Rebec
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| Pub. date in DiRROS: | 18.08.2026 |
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| Views: | 169 |
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| Downloads: | 37 |
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