Efficient algorithm and computing tool for shading calculation
The window is always part of a building envelope. It earns its respect in creating architectural elegance of a building. Despite a major advantage of daylight utilization, a window would inevitably allow heat from solar radiation to penetrate into a building. Hence, a window design must be performed...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Prince of Songkla University
2006-03-01
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| Series: | Songklanakarin Journal of Science and Technology (SJST) |
| Subjects: | |
| Online Access: | http://www.sjst.psu.ac.th/journal/28_2_pdf/15_shading_calculation.pdf |
| _version_ | 1818335035043872768 |
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| author | Chanadda Pongpattana Pattana Rakkwamsuk |
| author_facet | Chanadda Pongpattana Pattana Rakkwamsuk |
| author_sort | Chanadda Pongpattana |
| collection | DOAJ |
| description | The window is always part of a building envelope. It earns its respect in creating architectural elegance of a building. Despite a major advantage of daylight utilization, a window would inevitably allow heat from solar radiation to penetrate into a building. Hence, a window design must be performed under a careful consideration in order to achieve an energy-conscious design for which the daylight utilization and heat gain are optimized. This paper presents the validation of the vectorial formulation of shading calculation by comparing the computational results with experimental ones, overhang, fin, and eggcrate. A computational algorithm and interactive computer software for computing the shadow were developed. The software was designed in order to be user-friendly and capable of presenting profiles of the shadow graphically and computing corresponding shaded areas for a given window system. It was found that software simulation results were in excellent agreement with experimental results. The average percentage of error is approximately 0.25%, 0.52%, and 0.21% for overhang, fin, and eggcrate, respectively. |
| first_indexed | 2024-12-13T14:17:01Z |
| format | Article |
| id | doaj.art-56057b20b6f844c8ad562d47040d4037 |
| institution | Directory Open Access Journal |
| issn | 0125-3395 |
| language | English |
| last_indexed | 2024-12-13T14:17:01Z |
| publishDate | 2006-03-01 |
| publisher | Prince of Songkla University |
| record_format | Article |
| series | Songklanakarin Journal of Science and Technology (SJST) |
| spelling | doaj.art-56057b20b6f844c8ad562d47040d40372022-12-21T23:42:16ZengPrince of Songkla UniversitySongklanakarin Journal of Science and Technology (SJST)0125-33952006-03-01282375386Efficient algorithm and computing tool for shading calculationChanadda PongpattanaPattana RakkwamsukThe window is always part of a building envelope. It earns its respect in creating architectural elegance of a building. Despite a major advantage of daylight utilization, a window would inevitably allow heat from solar radiation to penetrate into a building. Hence, a window design must be performed under a careful consideration in order to achieve an energy-conscious design for which the daylight utilization and heat gain are optimized. This paper presents the validation of the vectorial formulation of shading calculation by comparing the computational results with experimental ones, overhang, fin, and eggcrate. A computational algorithm and interactive computer software for computing the shadow were developed. The software was designed in order to be user-friendly and capable of presenting profiles of the shadow graphically and computing corresponding shaded areas for a given window system. It was found that software simulation results were in excellent agreement with experimental results. The average percentage of error is approximately 0.25%, 0.52%, and 0.21% for overhang, fin, and eggcrate, respectively.http://www.sjst.psu.ac.th/journal/28_2_pdf/15_shading_calculation.pdfshading devicesshading calculationwindowenergy conservation |
| spellingShingle | Chanadda Pongpattana Pattana Rakkwamsuk Efficient algorithm and computing tool for shading calculation Songklanakarin Journal of Science and Technology (SJST) shading devices shading calculation window energy conservation |
| title | Efficient algorithm and computing tool for shading calculation |
| title_full | Efficient algorithm and computing tool for shading calculation |
| title_fullStr | Efficient algorithm and computing tool for shading calculation |
| title_full_unstemmed | Efficient algorithm and computing tool for shading calculation |
| title_short | Efficient algorithm and computing tool for shading calculation |
| title_sort | efficient algorithm and computing tool for shading calculation |
| topic | shading devices shading calculation window energy conservation |
| url | http://www.sjst.psu.ac.th/journal/28_2_pdf/15_shading_calculation.pdf |
| work_keys_str_mv | AT chanaddapongpattana efficientalgorithmandcomputingtoolforshadingcalculation AT pattanarakkwamsuk efficientalgorithmandcomputingtoolforshadingcalculation |