Study of the required thermal insulation (IREQ) of clothing using infrared imaging
The sense of cold develops due to the increase in heat loss from a human body. Excessive cold can be a health hazard, since excessive heat loss from the body may result in hypothermia/frostbite. Decreased body temperature due to heat loss also affects the physical, manual and perceptive performance...
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ftdoajarticles:oai:doaj.org/article:f57fd4551272470fa059c89521af32ba 2023-10-01T04:00:08+02:00 Study of the required thermal insulation (IREQ) of clothing using infrared imaging T Ahmad T Rashid H Khawaja M Moatamedi 2017-12-01T00:00:00Z https://doi.org/10.21152/1750-9548.11.4.413 https://doaj.org/article/f57fd4551272470fa059c89521af32ba EN eng MULTIPHYSICS http://journal.multiphysics.org/index.php/IJM/article/view/373 https://doaj.org/toc/1750-9548 https://doaj.org/toc/2048-3961 1750-9548 2048-3961 doi:10.21152/1750-9548.11.4.413 https://doaj.org/article/f57fd4551272470fa059c89521af32ba International Journal of Multiphysics, Vol 11, Iss 4 (2017) Physics QC1-999 article 2017 ftdoajarticles https://doi.org/10.21152/1750-9548.11.4.413 2023-09-03T00:43:50Z The sense of cold develops due to the increase in heat loss from a human body. Excessive cold can be a health hazard, since excessive heat loss from the body may result in hypothermia/frostbite. Decreased body temperature due to heat loss also affects the physical, manual and perceptive performance of individuals. Therefore, protective measures are taken through clothing that controls and regulates heat loss. Clothing is a protective means for thermal insulation. Clothing and garments used in cold climates should have sufficient insulation to maintain the thermal balance of the body. The required clothing insulation (IREQ) is calculated on the basis of the hypothesis concerning the heat flow by conduction, convection, radiation and evaporation. This term is well defined in standards such as BS-EN 342 and ISO 11079:2007 (E). This paper presents an experimental study of the use of state-of-the-art Infrared (IR) thermography to estimate IREQ values. However, real IREQ values are difficult to estimate, considering that parameters, such as individual metabolism, are unknown and subject to change. Therefore, relative IREQ (IREQ*) values are computed and compared. Experiments were also conducted to measure the relative IREQ of winter jackets, summer jackets, and sweaters. The infrared images were obtained using a FLIR® T1030sc camera and analyzed using FLIR® Researcher Max software. The experiments were performed under conditions of -20°C to -35°C in the cold room at UiT- The Arctic University of Norway. Article in Journal/Newspaper Arctic University of Norway UiT The Arctic University of Norway Directory of Open Access Journals: DOAJ Articles Arctic Norway The International Journal of Multiphysics 11 4 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 |
spellingShingle |
Physics QC1-999 T Ahmad T Rashid H Khawaja M Moatamedi Study of the required thermal insulation (IREQ) of clothing using infrared imaging |
topic_facet |
Physics QC1-999 |
description |
The sense of cold develops due to the increase in heat loss from a human body. Excessive cold can be a health hazard, since excessive heat loss from the body may result in hypothermia/frostbite. Decreased body temperature due to heat loss also affects the physical, manual and perceptive performance of individuals. Therefore, protective measures are taken through clothing that controls and regulates heat loss. Clothing is a protective means for thermal insulation. Clothing and garments used in cold climates should have sufficient insulation to maintain the thermal balance of the body. The required clothing insulation (IREQ) is calculated on the basis of the hypothesis concerning the heat flow by conduction, convection, radiation and evaporation. This term is well defined in standards such as BS-EN 342 and ISO 11079:2007 (E). This paper presents an experimental study of the use of state-of-the-art Infrared (IR) thermography to estimate IREQ values. However, real IREQ values are difficult to estimate, considering that parameters, such as individual metabolism, are unknown and subject to change. Therefore, relative IREQ (IREQ*) values are computed and compared. Experiments were also conducted to measure the relative IREQ of winter jackets, summer jackets, and sweaters. The infrared images were obtained using a FLIR® T1030sc camera and analyzed using FLIR® Researcher Max software. The experiments were performed under conditions of -20°C to -35°C in the cold room at UiT- The Arctic University of Norway. |
format |
Article in Journal/Newspaper |
author |
T Ahmad T Rashid H Khawaja M Moatamedi |
author_facet |
T Ahmad T Rashid H Khawaja M Moatamedi |
author_sort |
T Ahmad |
title |
Study of the required thermal insulation (IREQ) of clothing using infrared imaging |
title_short |
Study of the required thermal insulation (IREQ) of clothing using infrared imaging |
title_full |
Study of the required thermal insulation (IREQ) of clothing using infrared imaging |
title_fullStr |
Study of the required thermal insulation (IREQ) of clothing using infrared imaging |
title_full_unstemmed |
Study of the required thermal insulation (IREQ) of clothing using infrared imaging |
title_sort |
study of the required thermal insulation (ireq) of clothing using infrared imaging |
publisher |
MULTIPHYSICS |
publishDate |
2017 |
url |
https://doi.org/10.21152/1750-9548.11.4.413 https://doaj.org/article/f57fd4551272470fa059c89521af32ba |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic University of Norway UiT The Arctic University of Norway |
genre_facet |
Arctic University of Norway UiT The Arctic University of Norway |
op_source |
International Journal of Multiphysics, Vol 11, Iss 4 (2017) |
op_relation |
http://journal.multiphysics.org/index.php/IJM/article/view/373 https://doaj.org/toc/1750-9548 https://doaj.org/toc/2048-3961 1750-9548 2048-3961 doi:10.21152/1750-9548.11.4.413 https://doaj.org/article/f57fd4551272470fa059c89521af32ba |
op_doi |
https://doi.org/10.21152/1750-9548.11.4.413 |
container_title |
The International Journal of Multiphysics |
container_volume |
11 |
container_issue |
4 |
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1778534891305041920 |