The Experts below are selected from a list of 18 Experts worldwide ranked by ideXlab platform
George Havenith - One of the best experts on this subject based on the ideXlab platform.
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Heat transfer through protective clothing under symmetric and asymmetric long wave thermal radiation
2008Co-Authors: Peter Broede, Kalev Kuklane, Victor Candas, Emiel Den A. Hartog, Barbara Griefahn, Ingvar Holmer, Harriet Meinander, Wolfgang Nocker, Mark Richards, George HavenithAbstract:This report considers results of an EU funded research on thermal properties of protective clothing and their use in the assessment of the thermal strain at work. In order to study the effects of the asymmetry of long 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
Havenith George - One of the best experts on this subject based on the ideXlab platform.
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Heat transfer through protective clothing under symmetric and asymmetric long wave thermal radiation
'Springer Fachmedien Wiesbaden GmbH', 2008Co-Authors: Bröde Peter, Kuklane Kalev, Candas Victor, Den Hartog Emiel, Griefahn Barbara, Holmér Ingvar, Meinander Harriet, Nocker Wolfgang, Richards Mark, Havenith GeorgeAbstract: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
Peter Broede - One of the best experts on this subject based on the ideXlab platform.
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Heat transfer through protective clothing under symmetric and asymmetric long wave thermal radiation
2008Co-Authors: Peter Broede, Kalev Kuklane, Victor Candas, Emiel Den A. Hartog, Barbara Griefahn, Ingvar Holmer, Harriet Meinander, Wolfgang Nocker, Mark Richards, George HavenithAbstract:This report considers results of an EU funded research on thermal properties of protective clothing and their use in the assessment of the thermal strain at work. In order to study the effects of the asymmetry of long 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
Bröde Peter - One of the best experts on this subject based on the ideXlab platform.
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Heat transfer through protective clothing under symmetric and asymmetric long wave thermal radiation
'Springer Fachmedien Wiesbaden GmbH', 2008Co-Authors: Bröde Peter, Kuklane Kalev, Candas Victor, Den Hartog Emiel, Griefahn Barbara, Holmér Ingvar, Meinander Harriet, Nocker Wolfgang, Richards Mark, Havenith GeorgeAbstract: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
Ingvar Holmer - One of the best experts on this subject based on the ideXlab platform.
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Heat transfer through protective clothing under symmetric and asymmetric long wave thermal radiation
2008Co-Authors: Peter Broede, Kalev Kuklane, Victor Candas, Emiel Den A. Hartog, Barbara Griefahn, Ingvar Holmer, Harriet Meinander, Wolfgang Nocker, Mark Richards, George HavenithAbstract:This report considers results of an EU funded research on thermal properties of protective clothing and their use in the assessment of the thermal strain at work. In order to study the effects of the asymmetry of long 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
