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Wyświetlanie 1-2 z 2
Tytuł:
Heat Gain From Thermal Radiation Through Protective Clothing With Different Insulation, Reflectivity and Vapour Permeability
Autorzy:
Brode, P.
Kuklane, K.
Candas, V.
Den Hartog, E. A.
Griefahn, B.
Holmer, I.
Meinander, H.
Nocker, W.
Richards, M.
Havenith, G.
Powiązania:
https://bibliotekanauki.pl/articles/90351.pdf
Data publikacji:
2010
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
protective clothing
heat stress
heat budget models
thermal manikin
Opis:
The heat transferred through protective clothing under long wave radiation compared to a reference condition without radiant stress was determined in thermal manikin experiments. The influence of clothing insulation and reflectivity, and the interaction with wind and wet underclothing were considered. Garments with different outer materials and colours and additionally an aluminised reflective suit were combined with different number and types of dry and pre-wetted underwear layers. Under radiant stress, whole body heat loss decreased, i.e., heat gain occurred compared to the reference. This heat gain increased with radiation intensity, and decreased with air velocity and clothing insulation. Except for the reflective outer layer that showed only minimal heat gain over the whole range of radiation intensities, the influence of the outer garments’ material and colour was small with dry clothing. Wetting the underclothing for simulating sweat accumulation, however, caused differing effects with higher heat gain in less permeable garments.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2010, 16, 2; 231-244
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Test of Firefighter’s Turnout Gear in Hot and Humid Air Exposure
Autorzy:
Holmer, I.
Kuklane, K.
Gao, C.
Powiązania:
https://bibliotekanauki.pl/articles/90221.pdf
Data publikacji:
2006
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
body temperature
heat stress
physiological strain
protective clothing
odzież ochronna
straż pożarna
pożar
temperatura powietrza
temperatura ciała
stres
zagrożenia zawodowe
strażak
Opis:
Five students of a rescue training school cycled at 50 W for 20 min at 20 oC before walking at 5 km/hr up to 30 min in a climatic chamber at 55 oC and 30% relative humidity. 4 different types of clothing ensembles differing in terms of thickness and thermal insulation value were tested on separate days. All subjects completed 28–30 min in light clothing, but quit after 20–27 min in 3 firefighter ensembles due to a rectal temperature of 39 oC or subjective fatigue. No difference in the evolution of mean skin or rectal temperature was seen for the 3 turnout ensembles. Sweat production amounted to about 1000 g in the turnout gears of which less than 20% evaporated. It was concluded that the small differences between the turnout gears in terms of design, thickness and insulation value had no effect on the resulting heat physiological strain for the given experimental conditions.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2006, 12, 3; 297-305
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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