A METHOD FOR EVALUATION OF NON-UNIFORM RADIANT-CONVECTIVE LOAD ON HUMAN BODY DURING MENTAL WORK
The objective of this study was to develop a documentation for the amendment of the microclimatic part of the Czech Government Regulation, particularly in a non-uniform radiant-convective load evaluation. Changes in regulation were made based on experimental data obtained on a group of experimental...
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| Format: | Article |
| Language: | English |
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CTU Central Library
2017-10-01
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| Series: | Acta Polytechnica |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/ap/article/view/4173 |
| _version_ | 1818484790171533312 |
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| author | Lenka Prokšová Zuská |
| author_facet | Lenka Prokšová Zuská |
| author_sort | Lenka Prokšová Zuská |
| collection | DOAJ |
| description | The objective of this study was to develop a documentation for the amendment of the microclimatic part of the Czech Government Regulation, particularly in a non-uniform radiant-convective load evaluation. Changes in regulation were made based on experimental data obtained on a group of experimental individuals in a climatic chamber. One of the objectives of the climatic chamber experiments was to evaluate whether there was a possibility to use an alternative method, which utilizes a new value – stereotemperature, for the assessment. A group of 24 women was exposed to a non-uniform radiant-convective load in a climatic chamber for 1 hour during their computer work. Measurements were divided according to the globe temperature into 3 stages. The physical parameters of air were continuously measured: the air temperature, globe temperature, air velocity, radiant temperature, relative humidity, stereotemperature and physiological parameters. Thermal sensations of experimental subjects were expressed in the seven-point scale according to EN ISO 7730. The thermal sensation correlated very well with the difference of stereotemperature and the globe temperature. The stereotemperature correlated very well with the radiant temperature. In this work, the composed equations were used to develop the limit values for the thermal stress evaluation in the uniform and non-uniform thermal environment at workplaces. It is possible to determine how the body of an exposed person perceives the non-uniform climatic conditions in the indoor environment, by adding the stereotemperature to government regulations. |
| first_indexed | 2024-12-10T15:59:37Z |
| format | Article |
| id | doaj.art-0d8bf4a4ef2c402f8efc57feb20a675c |
| institution | Directory Open Access Journal |
| issn | 1210-2709 1805-2363 |
| language | English |
| last_indexed | 2024-12-10T15:59:37Z |
| publishDate | 2017-10-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica |
| spelling | doaj.art-0d8bf4a4ef2c402f8efc57feb20a675c2022-12-22T01:42:29ZengCTU Central LibraryActa Polytechnica1210-27091805-23632017-10-0157534034710.14311/AP.2017.57.03403920A METHOD FOR EVALUATION OF NON-UNIFORM RADIANT-CONVECTIVE LOAD ON HUMAN BODY DURING MENTAL WORKLenka Prokšová Zuská0Czech Technical UniversityThe objective of this study was to develop a documentation for the amendment of the microclimatic part of the Czech Government Regulation, particularly in a non-uniform radiant-convective load evaluation. Changes in regulation were made based on experimental data obtained on a group of experimental individuals in a climatic chamber. One of the objectives of the climatic chamber experiments was to evaluate whether there was a possibility to use an alternative method, which utilizes a new value – stereotemperature, for the assessment. A group of 24 women was exposed to a non-uniform radiant-convective load in a climatic chamber for 1 hour during their computer work. Measurements were divided according to the globe temperature into 3 stages. The physical parameters of air were continuously measured: the air temperature, globe temperature, air velocity, radiant temperature, relative humidity, stereotemperature and physiological parameters. Thermal sensations of experimental subjects were expressed in the seven-point scale according to EN ISO 7730. The thermal sensation correlated very well with the difference of stereotemperature and the globe temperature. The stereotemperature correlated very well with the radiant temperature. In this work, the composed equations were used to develop the limit values for the thermal stress evaluation in the uniform and non-uniform thermal environment at workplaces. It is possible to determine how the body of an exposed person perceives the non-uniform climatic conditions in the indoor environment, by adding the stereotemperature to government regulations.https://ojs.cvut.cz/ojs/index.php/ap/article/view/4173indoor environment, non-uniformity thermal load, thermal conditions at workplaces, stereotemperature, Stereothermometer |
| spellingShingle | Lenka Prokšová Zuská A METHOD FOR EVALUATION OF NON-UNIFORM RADIANT-CONVECTIVE LOAD ON HUMAN BODY DURING MENTAL WORK Acta Polytechnica indoor environment, non-uniformity thermal load, thermal conditions at workplaces, stereotemperature, Stereothermometer |
| title | A METHOD FOR EVALUATION OF NON-UNIFORM RADIANT-CONVECTIVE LOAD ON HUMAN BODY DURING MENTAL WORK |
| title_full | A METHOD FOR EVALUATION OF NON-UNIFORM RADIANT-CONVECTIVE LOAD ON HUMAN BODY DURING MENTAL WORK |
| title_fullStr | A METHOD FOR EVALUATION OF NON-UNIFORM RADIANT-CONVECTIVE LOAD ON HUMAN BODY DURING MENTAL WORK |
| title_full_unstemmed | A METHOD FOR EVALUATION OF NON-UNIFORM RADIANT-CONVECTIVE LOAD ON HUMAN BODY DURING MENTAL WORK |
| title_short | A METHOD FOR EVALUATION OF NON-UNIFORM RADIANT-CONVECTIVE LOAD ON HUMAN BODY DURING MENTAL WORK |
| title_sort | method for evaluation of non uniform radiant convective load on human body during mental work |
| topic | indoor environment, non-uniformity thermal load, thermal conditions at workplaces, stereotemperature, Stereothermometer |
| url | https://ojs.cvut.cz/ojs/index.php/ap/article/view/4173 |
| work_keys_str_mv | AT lenkaproksovazuska amethodforevaluationofnonuniformradiantconvectiveloadonhumanbodyduringmentalwork AT lenkaproksovazuska methodforevaluationofnonuniformradiantconvectiveloadonhumanbodyduringmentalwork |