Analysis of a simplified calibration procedure for 18 design-phase building energy models
This paper evaluates the accuracy of 18 design-phase building energy models, built according to LEED Canada protocol, and investigates the effectiveness of model calibration steps to improve simulation predictions with respect to measured energy data. These calibration steps, applied in professional...
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Informa UK Limited
2020
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| Online Access: | https://hdl.handle.net/1721.1/126642 |
| _version_ | 1826213186925232128 |
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| author | Reinhart, Christoph |
| author2 | Massachusetts Institute of Technology. Department of Architecture |
| author_facet | Massachusetts Institute of Technology. Department of Architecture Reinhart, Christoph |
| author_sort | Reinhart, Christoph |
| collection | MIT |
| description | This paper evaluates the accuracy of 18 design-phase building energy models, built according to LEED Canada protocol, and investigates the effectiveness of model calibration steps to improve simulation predictions with respect to measured energy data. These calibration steps, applied in professional practice, included inputting actual weather data, adding unregulated loads, revising plug loads (often with submetered data), and other simple updates. In sum, the design-phase energy models underpredicted the total measured energy consumption by 36%. Following the calibration steps, this error was reduced to a net 7% underprediction. For the monthly energy use intensity (EUI), the coefficient of variation of the root mean square error improved from 45% to 24%. Revising plug loads made the largest impact in these cases. This step increased the EUI by 15% median (32% mean) in the models. This impact far exceeded that of calibrating the weather data, even in a sensitivity test using extreme weather years. |
| first_indexed | 2024-09-23T15:44:42Z |
| format | Article |
| id | mit-1721.1/126642 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:44:42Z |
| publishDate | 2020 |
| publisher | Informa UK Limited |
| record_format | dspace |
| spelling | mit-1721.1/1266422022-09-29T15:55:22Z Analysis of a simplified calibration procedure for 18 design-phase building energy models Reinhart, Christoph Massachusetts Institute of Technology. Department of Architecture This paper evaluates the accuracy of 18 design-phase building energy models, built according to LEED Canada protocol, and investigates the effectiveness of model calibration steps to improve simulation predictions with respect to measured energy data. These calibration steps, applied in professional practice, included inputting actual weather data, adding unregulated loads, revising plug loads (often with submetered data), and other simple updates. In sum, the design-phase energy models underpredicted the total measured energy consumption by 36%. Following the calibration steps, this error was reduced to a net 7% underprediction. For the monthly energy use intensity (EUI), the coefficient of variation of the root mean square error improved from 45% to 24%. Revising plug loads made the largest impact in these cases. This step increased the EUI by 15% median (32% mean) in the models. This impact far exceeded that of calibrating the weather data, even in a sensitivity test using extreme weather years. 2020-08-18T15:23:52Z 2020-08-18T15:23:52Z 2015-01 2014-01 2019-08-08T13:32:16Z Article http://purl.org/eprint/type/JournalArticle 1940-1507 1940-1493 https://hdl.handle.net/1721.1/126642 Samuelsona, Holly W., Arash Ghorayshib and Christoph F. Reinhart. “Analysis of a simplified calibration procedure for 18 design-phase building energy models.” Journal of building performance simulation, vol. 9, no. 1, 2015, pp. 17–29 © 2015 The Author(s) en 10.1080/19401493.2014.988752 Journal of building performance simulation Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Informa UK Limited Other repository |
| spellingShingle | Reinhart, Christoph Analysis of a simplified calibration procedure for 18 design-phase building energy models |
| title | Analysis of a simplified calibration procedure for 18 design-phase building energy models |
| title_full | Analysis of a simplified calibration procedure for 18 design-phase building energy models |
| title_fullStr | Analysis of a simplified calibration procedure for 18 design-phase building energy models |
| title_full_unstemmed | Analysis of a simplified calibration procedure for 18 design-phase building energy models |
| title_short | Analysis of a simplified calibration procedure for 18 design-phase building energy models |
| title_sort | analysis of a simplified calibration procedure for 18 design phase building energy models |
| url | https://hdl.handle.net/1721.1/126642 |
| work_keys_str_mv | AT reinhartchristoph analysisofasimplifiedcalibrationprocedurefor18designphasebuildingenergymodels |