Measurement Errors When Measuring Temperature in the Sun
In the validation of microclimate simulation software, the comparison of simulation results with on-site measurements is a common practice. To ensure reliable validation, it is crucial to utilize high-quality temperature sensors with a deviation smaller than the average absolute error of the simulat...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/24/5/1564 |
| _version_ | 1797263859828916224 |
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| author | Florian Teichmann Alexander Pichlhöfer Abdulah Sulejmanovski Azra Korjenic |
| author_facet | Florian Teichmann Alexander Pichlhöfer Abdulah Sulejmanovski Azra Korjenic |
| author_sort | Florian Teichmann |
| collection | DOAJ |
| description | In the validation of microclimate simulation software, the comparison of simulation results with on-site measurements is a common practice. To ensure reliable validation, it is crucial to utilize high-quality temperature sensors with a deviation smaller than the average absolute error of the simulation software. However, previous validation campaigns have identified significant absolute errors, particularly during periods of high solar radiation, possibly attributed to the use of non-ventilated radiation shields. This study addresses the issue by introducing a ventilated radiation shield created through 3D printing, aiming to enhance the accuracy of measurements on cloudless summer days with intense solar radiation. The investigation employs two pairs of sensors, each comprising one sensor with a ventilated and one with a non-ventilated radiation shield, placed on a south-oriented facade with two distinct albedos. Results from the measurement campaign indicate that the air temperature measured by the non-ventilated sensor is elevated by up to 2.8 °C at high albedo and up to 1.9 °C at a low albedo facade, compared to measurements with the ventilated radiation shield. An in-depth analysis of means, standard deviations, and 95% fractiles highlights the strong dependency of the non-ventilated sensor error on wind velocity. This research underscores the importance of employing ventilated radiation shields for accurate microclimate measurements, particularly in scenarios involving high solar radiation, contributing valuable insights for researchers and practitioners engaged in microclimate simulation validation processes. |
| first_indexed | 2024-04-25T00:19:42Z |
| format | Article |
| id | doaj.art-1c6b0f9ec26b4fc9a496b4aaf4c580af |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-25T00:19:42Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-1c6b0f9ec26b4fc9a496b4aaf4c580af2024-03-12T16:55:13ZengMDPI AGSensors1424-82202024-02-01245156410.3390/s24051564Measurement Errors When Measuring Temperature in the SunFlorian Teichmann0Alexander Pichlhöfer1Abdulah Sulejmanovski2Azra Korjenic3Institute of Material Technology, Building Physics and Building Ecology, Vienna University of Technology (TU Wien), 1040 Vienna, AustriaInstitute of Material Technology, Building Physics and Building Ecology, Vienna University of Technology (TU Wien), 1040 Vienna, AustriaInstitute of Material Technology, Building Physics and Building Ecology, Vienna University of Technology (TU Wien), 1040 Vienna, AustriaInstitute of Material Technology, Building Physics and Building Ecology, Vienna University of Technology (TU Wien), 1040 Vienna, AustriaIn the validation of microclimate simulation software, the comparison of simulation results with on-site measurements is a common practice. To ensure reliable validation, it is crucial to utilize high-quality temperature sensors with a deviation smaller than the average absolute error of the simulation software. However, previous validation campaigns have identified significant absolute errors, particularly during periods of high solar radiation, possibly attributed to the use of non-ventilated radiation shields. This study addresses the issue by introducing a ventilated radiation shield created through 3D printing, aiming to enhance the accuracy of measurements on cloudless summer days with intense solar radiation. The investigation employs two pairs of sensors, each comprising one sensor with a ventilated and one with a non-ventilated radiation shield, placed on a south-oriented facade with two distinct albedos. Results from the measurement campaign indicate that the air temperature measured by the non-ventilated sensor is elevated by up to 2.8 °C at high albedo and up to 1.9 °C at a low albedo facade, compared to measurements with the ventilated radiation shield. An in-depth analysis of means, standard deviations, and 95% fractiles highlights the strong dependency of the non-ventilated sensor error on wind velocity. This research underscores the importance of employing ventilated radiation shields for accurate microclimate measurements, particularly in scenarios involving high solar radiation, contributing valuable insights for researchers and practitioners engaged in microclimate simulation validation processes.https://www.mdpi.com/1424-8220/24/5/1564radiation shieldradiation errormeasurement errorair temperature measurement |
| spellingShingle | Florian Teichmann Alexander Pichlhöfer Abdulah Sulejmanovski Azra Korjenic Measurement Errors When Measuring Temperature in the Sun Sensors radiation shield radiation error measurement error air temperature measurement |
| title | Measurement Errors When Measuring Temperature in the Sun |
| title_full | Measurement Errors When Measuring Temperature in the Sun |
| title_fullStr | Measurement Errors When Measuring Temperature in the Sun |
| title_full_unstemmed | Measurement Errors When Measuring Temperature in the Sun |
| title_short | Measurement Errors When Measuring Temperature in the Sun |
| title_sort | measurement errors when measuring temperature in the sun |
| topic | radiation shield radiation error measurement error air temperature measurement |
| url | https://www.mdpi.com/1424-8220/24/5/1564 |
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