| 1. |
- Fukazawa, Takako, et al.
(författare)
-
Usability of a newly developed thermal manikin of infant to assess thermal stress in various environments
- 2005
-
Ingår i: Environmental ergonomics XI : proceedings of the 11th International Conference, 22-26 May, 2005, Ystad, Sweden - proceedings of the 11th International Conference, 22-26 May, 2005, Ystad, Sweden. - 1650-9773. - 9163170620 ; , s. 618-623
-
Konferensbidrag (refereegranskat)
|
|
| 2. |
|
|
| 3. |
- Holmér, Ingvar, et al.
(författare)
-
Respiration and air flow pattern and airflow patterns during incremental exercise with respirators
- 2005
-
Ingår i: Environmental ergonomics XI : proceedings of the 11th International Conference, 22-26 May, 2005, Ystad, Sweden - proceedings of the 11th International Conference, 22-26 May, 2005, Ystad, Sweden. - 1650-9773. - 9163170620 ; , s. 455-458
-
Konferensbidrag (refereegranskat)
|
|
| 4. |
- Kuklane, Kalev, et al.
(författare)
-
Calculation of clothing insulation by serial and parallel model, their effect on clothing choice by IREQ and thermal responses in the cold
- 2005
-
Ingår i: Environmental ergonomics XI : proceedings of the 11th International Conference, 22-26 May, 2005, Ystad, Sweden - proceedings of the 11th International Conference, 22-26 May, 2005, Ystad, Sweden. - 1650-9773. - 9163170620 ; , s. 445-448
-
Konferensbidrag (refereegranskat)
|
|
| 5. |
- Bohgard, Mats, et al.
(författare)
-
Fysikaliska faktorer
- 2008
-
Ingår i: Arbete och teknik på människans villkor. - 9789173650373 ; , s. 191-307
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 6. |
- Bohgard, Mats, et al.
(författare)
-
Physical Factors
- 2009
-
Ingår i: Work and Technology on Human Terms. - 9789173650588 ; , s. 191-306
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 7. |
- Bröde, Peter, et al.
(författare)
-
Heat transfer through protective clothing under symmetric and asymmetric long wave thermal radiation
- 2008
-
Ingår i: Zeitschrift für Arbeitswissenschaft. - 0340-2444. ; 62:4, s. 267-276
-
Tidskriftsartikel (refereegranskat)abstract
- This report considers results of an ED funded research on thermal properties ofprotective clothing and their use in the assessment of the thermal strain at work. In order to study the effects of the asymmetry oflong wave thermal radiation on the heat transfer through protective clothing, the heat loss under all-side and unilaterally applied radiation with the same incident radiant power of 279 W/m2 was measured with a thermal manikin and compared to a reference condition where mean radiant temperature was equal to air temperature. With exposure to radiation a lowered heat loss, i.e. heat gain for the whole covered body area was observed, which did not depend on radiant asymmetry for the dry as well as for the combined dry and evaporative heat loss, and which was attenuated when wearing a more insulating underwear. However, under one-sided radiation a more inhomogeneous spatial distribution occurred with higher heat gains and higher surface temperatures at the irradiated body parts. Practical Relevance The direction ofthermal radiation in the horizontal plane may be neglected when assessing the physiological heat strain in protective clothing by heat budget models. In contrast to this, it may be advisable to consider radiant asymmetries with respect to thermal comfort with low intensity radiation, and the most intense radiant source when assessing the risk of skin burns.
|
|
| 8. |
- Bröde, Peter, et al.
(författare)
-
Infrared radiation effects on heat loss measured by a thermal manikin wearing protective clothing
- 2005
-
Ingår i: Environmental ergonomics XI : proceedings of the 11th International Conference, 22-26 May, 2005, Ystad, Sweden - proceedings of the 11th International Conference, 22-26 May, 2005, Ystad, Sweden. - 1650-9773. - 9163170620 ; , s. 74-77
-
Konferensbidrag (refereegranskat)
|
|
| 9. |
- Bröde, Peter, et al.
(författare)
-
Non-evaporative effects of a wet mid layer on heat transfer through protective clothing
- 2008
-
Ingår i: European Journal of Applied Physiology. - : Springer Science and Business Media LLC. - 1439-6327 .- 1439-6319. ; 104:2, s. 341-349
-
Tidskriftsartikel (refereegranskat)abstract
- In order to assess the non-evaporative components of the reduced thermal insulation of wet clothing, experiments were performed with a manikin and with human subjects in which two layers of underwear separated by an impermeable barrier were worn under an impermeable overgarment at 20 °C, 80% RH and 0.5 ms-1 air velocity. By comparing manikin measurements with dry and wetted mid underwear layer, the increase in heat loss caused by a wet layer kept away from the skin was determined, which turned out to be small (5-6 Wm-2), irrespective of the inner underwear layer being dry or wetted, and was only one third of the evaporative heat loss calculated from weight change, i.e. evaporative cooling efficiency was far below unity. In the experiments with 8 males, each subject participated in two sessions with the mid underwear layer either dry or wetted, where they stood still for the first 30 minutes and then performed treadmill work for 60 minutes. Reduced heat strain due to lower insulation with the wetted mid layer was observed with decreased microclimate and skin temperatures, lowered sweat loss and cardiac strain. Accordingly, total clothing insulation calculated over the walking period from heat balance equations was reduced by 0.02 m2 °C W-1 (16%), while for the standing period the same decrease in insulation, representing 9% reduction only showed up after allowing for the lower evaporative cooling efficiency in the calculations. As evaporation to the environment and inside the clothing was restricted, the observed small alterations may be attributed to the wet mid layer’s increased conductivity, which, however, appears to be of minor importance compared to the evaporative effects in the assessment of the thermal properties of wet clothing.
|
|
| 10. |
|
|
