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Kouhei Kuwabara
Hokkaido University
EngineeringRadiationArchitectural engineeringThermalMean radiant temperature
17Publications
3H-index
20Citations
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Publications 17
Newest
#1Kouhei KuwabaraH-Index: 3
#2Keita Yamazaki (Iwate University)H-Index: 1
Last. Nao TakahashiH-Index: 1
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Source
#1Keita Yamazaki (Iwate University)H-Index: 1
#2Shigeo Suga (Takenaka Corporation)H-Index: 1
Last. Koichiro Kobayashi (Iwate University)H-Index: 8
view all 5 authors...
Source
#1Keita Yamazaki (Iwate University)H-Index: 1
#2Shigeo Suga (Takenaka Corporation)H-Index: 1
Last. Nao TakahashiH-Index: 1
view all 8 authors...
1 CitationsSource
#1Hideki Kubota (Hokkaido University)H-Index: 8
#2Kouhei KuwabaraH-Index: 3
Last. Yasuhiro Hamada (Hokkaido University)H-Index: 22
view all 3 authors...
The present paper made the heat balance equation (HBE) for nude or minimally clad subjects a linear function of mean skin temperature (t sk) by applying new equations for sweating efficiency (η sw) and thermoregulatory sweat rate (S wR). As the solution of the HBE, the equation predicting t sk was derived and used for a heat strain scale of subjects. The η sw was proportional to the reciprocal of S w/E max (S w, sweat rate; E max maximum evaporative capacity) and the S wR was proportional to t s...
Source
#1Hideki Kubota (Hokkaido University)H-Index: 8
#2Kouhei KuwabaraH-Index: 3
Last. Yasuhiro Hamada (Hokkaido University)H-Index: 22
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This paper applies the heat balance equation (HBE) for clothed subjects as a linear function of mean skin temperature (t sk ) by a new sweating efficiency (η sw ) and an approximation for the thermoregulatory sweat rate. The equation predicting t sk in steady state conditions was derived as the solution of the HBE and used for a predictive heat strain scale. The heat loss from the wet clothing (WCL) area was identified with a new variable of ‘virtual dripping sweat rate VDSR’ (S wdr ). This is a...
1 CitationsSource
#1Kouhei KuwabaraH-Index: 3
#2Hideki KubotaH-Index: 8
Last. Katsunori NaganoH-Index: 20
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#2Kouhei KuwabaraH-Index: 3
Last. Katsunori NaganoH-Index: 20
view all 7 authors...
#1Kouhei Kuwabara (Hokkaido University)H-Index: 3
#2Tohru MochidaH-Index: 11
Last. Tomonori SakoiH-Index: 9
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SUMMARY The authors present a theoretical derivation of the WBGT for mula for outdoor conditions that was originally developed from the results of experiments on human subjects, based on a heat balance equation between the human body and its outdoor environment. The three coefficients of wet bulb temperature Tw, globe temperature Tg, and air temperature Ta were expressed in almost the same way as in the indoor WBGT formula, but they contain a new element characterizing solar radiation. In additi...
3 Citations
#1Kouhei Kuwabara (Hokkaido University)H-Index: 3
#2Katsunori NaganoH-Index: 20
Last. Yasuhiro HamadaH-Index: 22
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SUMMARY In order to calculate mean radiant temperature in an outdoor environment, we had to calculate a hypothetical sky tempe rature from directly measurement or an empirical formula of atmospheric radiation expressed as functions of daily mean air temperature, cloud amount, etc. The aim of this research is to propose new expression for simply calculating the radiative hea t exchange in an outdoor environment. In this paper, we defined the long-wave radiation coefficient based on the ratio of a...
1 Citations
#2Yasuhiro HamadaH-Index: 22
Last. Yoshiaki HashimotoH-Index: 2
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