Study of the required thermal insulation (IREQ) of clothing using infrared imaging
OPEN ACCESS The International Journal of Multiphysics is now Open Access. There will be no submission charges. The Article Processing Charge (APC) is £600. The articles will be published under Creative Commons Attribution License (CC-BY 4.0). The authors will hold the copyrights without restrictions...
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ftunivtroemsoe:oai:munin.uit.no:10037/11854 2023-05-15T18:49:27+02:00 Study of the required thermal insulation (IREQ) of clothing using infrared imaging Ahmad, Tanveer Rashid, Taimur Khawaja, Hassan Abbas Moatamedi, Mojtaba 2017 https://hdl.handle.net/10037/11854 eng eng Multi-Science Publishing The International Journal of Multiphysics Ahmad T, Rashid T, Khawaja HA, Moatamedi M. Study of the required thermal insulation (IREQ) of clothing using infrared imaging. The International Journal of Multiphysics. 2017;11(4) FRIDAID 1505137 1750-9548 2048-3961 https://hdl.handle.net/10037/11854 openAccess VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 VDP::Mathematics and natural science: 400::Physics: 430 Journal article Tidsskriftartikkel Peer reviewed 2017 ftunivtroemsoe 2021-06-25T17:55:27Z OPEN ACCESS The International Journal of Multiphysics is now Open Access. There will be no submission charges. The Article Processing Charge (APC) is £600. The articles will be published under Creative Commons Attribution License (CC-BY 4.0). The authors will hold the copyrights without restrictions. Accepted manuscript version. Link to publisher's version: http://doi.org/10.21152/1750-9548.11.4.413 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 University of Tromsø: Munin Open Research Archive Arctic Norway |
institution |
Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 VDP::Mathematics and natural science: 400::Physics: 430 |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 VDP::Mathematics and natural science: 400::Physics: 430 Ahmad, Tanveer Rashid, Taimur Khawaja, Hassan Abbas Moatamedi, Mojtaba Study of the required thermal insulation (IREQ) of clothing using infrared imaging |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 VDP::Mathematics and natural science: 400::Physics: 430 |
description |
OPEN ACCESS The International Journal of Multiphysics is now Open Access. There will be no submission charges. The Article Processing Charge (APC) is £600. The articles will be published under Creative Commons Attribution License (CC-BY 4.0). The authors will hold the copyrights without restrictions. Accepted manuscript version. Link to publisher's version: http://doi.org/10.21152/1750-9548.11.4.413 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 |
Ahmad, Tanveer Rashid, Taimur Khawaja, Hassan Abbas Moatamedi, Mojtaba |
author_facet |
Ahmad, Tanveer Rashid, Taimur Khawaja, Hassan Abbas Moatamedi, Mojtaba |
author_sort |
Ahmad, Tanveer |
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 |
Multi-Science Publishing |
publishDate |
2017 |
url |
https://hdl.handle.net/10037/11854 |
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_relation |
The International Journal of Multiphysics Ahmad T, Rashid T, Khawaja HA, Moatamedi M. Study of the required thermal insulation (IREQ) of clothing using infrared imaging. The International Journal of Multiphysics. 2017;11(4) FRIDAID 1505137 1750-9548 2048-3961 https://hdl.handle.net/10037/11854 |
op_rights |
openAccess |
_version_ |
1766243039957745664 |