Correlation between Wet Bulb Globe Temperature and Thermal Work Limit Compared to the Modified Threshold Limit of Tympanic Temperature
Introduction: Thermal stress risk management requires the development of applied indicators. The purpose of this study was to evaluate the performance of the two indicators including WBGT and TWL and their fit with the tympanic temperature. Method: This cross-sectional study was carried out on 101...
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| Format: | Article |
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Hamadan University of Medical Sciences
2018-01-01
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| Series: | Muhandisī-i bihdāsht-i ḥirfah/ī |
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| Online Access: | http://johe.umsha.ac.ir/article-1-330-en.pdf |
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| author | Hamidreza Heidari Hoda Rahimifard Shahram Arsang-Jang Robabeh Sahranavard Ahmad Soltanzadeh |
| author_facet | Hamidreza Heidari Hoda Rahimifard Shahram Arsang-Jang Robabeh Sahranavard Ahmad Soltanzadeh |
| author_sort | Hamidreza Heidari |
| collection | DOAJ |
| description | Introduction: Thermal stress risk management requires the development of applied indicators. The purpose of this study was to evaluate the performance of the two indicators including WBGT and TWL and their fit with the tympanic temperature.
Method: This cross-sectional study was carried out on 101 urban service personnel in a heat and dry area in 2016. The measurements of the study indices including WBGT, TWL, air velocity and tympanic temperature were performed using a WBGT Digital Thermometer, TWL software, thermal anemometer and Thermometer measuring the temperature of the tympanic curtain, respectively. Data were analyzed by SPSS software version 22.
Results: The results of this study showed that the highest correlation was observed between WBGT index and tympanic temperature (r=0.669) and the lowest correlation coefficient was between TWL index and tympanic temperature (r=0.343). In addition, the absolute magnitude of the correlation coefficient between the WBGT and TWL indicators was higher in comparison with other indicators (r=0.660) and the correlation with the increase in air temperature was also higher, so that at temperatures above 35 ° C, the correlation coefficient of the two indices reached 0.996.
Conclusion: The findings of this study indicated that the TWL index can be considered and applied as a suitable substitute for the WBGT index. |
| first_indexed | 2024-12-22T05:40:40Z |
| format | Article |
| id | doaj.art-6419305a80204645a70afdbcd505c7e9 |
| institution | Directory Open Access Journal |
| issn | 2383-3378 2383-3378 |
| language | fas |
| last_indexed | 2024-12-22T05:40:40Z |
| publishDate | 2018-01-01 |
| publisher | Hamadan University of Medical Sciences |
| record_format | Article |
| series | Muhandisī-i bihdāsht-i ḥirfah/ī |
| spelling | doaj.art-6419305a80204645a70afdbcd505c7e92022-12-21T18:37:11ZfasHamadan University of Medical SciencesMuhandisī-i bihdāsht-i ḥirfah/ī2383-33782383-33782018-01-0144313810.21859/johe.4.4.31Correlation between Wet Bulb Globe Temperature and Thermal Work Limit Compared to the Modified Threshold Limit of Tympanic TemperatureHamidreza Heidari0Hoda Rahimifard1Shahram Arsang-Jang2Robabeh Sahranavard3Ahmad Soltanzadeh4Assistant Professor, Department of Occupational Hygiene Engineering, Faculty of Health, Qom University of Medical Sciences, Qom, IranOccupational Health Specialist, Environmental Pollution Center, Faculty of Health, Qom University of Medical Sciences, Qom, IranAssistant Professor, Department of Epidemiology and Statistics, School of Public Health, Qom University of Medical Sciences, Qom, IranOccupational Health Specialist, Environmental Pollution Center, Faculty of Health, Qom University of Medical Sciences, Qom, IranAssistant Professor, Department of Occupational Hygiene Engineering, Faculty of Health, Qom University of Medical Sciences, Qom, IranIntroduction: Thermal stress risk management requires the development of applied indicators. The purpose of this study was to evaluate the performance of the two indicators including WBGT and TWL and their fit with the tympanic temperature. Method: This cross-sectional study was carried out on 101 urban service personnel in a heat and dry area in 2016. The measurements of the study indices including WBGT, TWL, air velocity and tympanic temperature were performed using a WBGT Digital Thermometer, TWL software, thermal anemometer and Thermometer measuring the temperature of the tympanic curtain, respectively. Data were analyzed by SPSS software version 22. Results: The results of this study showed that the highest correlation was observed between WBGT index and tympanic temperature (r=0.669) and the lowest correlation coefficient was between TWL index and tympanic temperature (r=0.343). In addition, the absolute magnitude of the correlation coefficient between the WBGT and TWL indicators was higher in comparison with other indicators (r=0.660) and the correlation with the increase in air temperature was also higher, so that at temperatures above 35 ° C, the correlation coefficient of the two indices reached 0.996. Conclusion: The findings of this study indicated that the TWL index can be considered and applied as a suitable substitute for the WBGT index.http://johe.umsha.ac.ir/article-1-330-en.pdfThermal stressWet-bulb globe temperature (WBGT)thermal work limit (TWL)tympanic temperature |
| spellingShingle | Hamidreza Heidari Hoda Rahimifard Shahram Arsang-Jang Robabeh Sahranavard Ahmad Soltanzadeh Correlation between Wet Bulb Globe Temperature and Thermal Work Limit Compared to the Modified Threshold Limit of Tympanic Temperature Muhandisī-i bihdāsht-i ḥirfah/ī Thermal stress Wet-bulb globe temperature (WBGT) thermal work limit (TWL) tympanic temperature |
| title | Correlation between Wet Bulb Globe Temperature and Thermal Work Limit Compared to the Modified Threshold Limit of Tympanic Temperature |
| title_full | Correlation between Wet Bulb Globe Temperature and Thermal Work Limit Compared to the Modified Threshold Limit of Tympanic Temperature |
| title_fullStr | Correlation between Wet Bulb Globe Temperature and Thermal Work Limit Compared to the Modified Threshold Limit of Tympanic Temperature |
| title_full_unstemmed | Correlation between Wet Bulb Globe Temperature and Thermal Work Limit Compared to the Modified Threshold Limit of Tympanic Temperature |
| title_short | Correlation between Wet Bulb Globe Temperature and Thermal Work Limit Compared to the Modified Threshold Limit of Tympanic Temperature |
| title_sort | correlation between wet bulb globe temperature and thermal work limit compared to the modified threshold limit of tympanic temperature |
| topic | Thermal stress Wet-bulb globe temperature (WBGT) thermal work limit (TWL) tympanic temperature |
| url | http://johe.umsha.ac.ir/article-1-330-en.pdf |
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