earticle

영어

The reduction of running energy cost and fossil fuel pollutant is the big issue in the building industry, therefore the energy authority guide to the low room temperature in the heating season. However, the occupant feel unsatisfying TS(Thermal sensation) in actual condition that the room of low temperature as under 18℃. The heating on local body as sole and buttock is useful auxiliary way in the low temperature room in the heating season, but the papers on the human body response with the local body heating were no sufficient. This study aim is how to the human body responses as the change of CT(Core temperature) and MST(Mean skin temperature, ISO 9886 4 point), and TSV(Thermal sensation vote, ASHRAE 7 scale) of human body through the measures of CT, MST, PMV(Predicted mean vote, ISO 7730), the questionnaire TSV on three cases subjects in slightly cool ambient that the first is only heating the sole, the second is only heating the buttock, the third is the sole and buttock heating. And tow subjects participate in 6 days measuring in mid winter, the subjects sit in the half hour of each condition phases that the first is non heating corridor(Approximately ambient temperature 8±1℃, PMV is under -3.0), the second is in the room(16±1℃, PMV is approximately -1.5), the third is sole and buttock touching that the EHC(Electric heating cushions) in the room(16±1℃, PMV is same to second phase), the fourth is untouching the heating cushions in the comfort room(23±1℃, PMV is approximately 0.5). In conclusion, the CT of subjects were constant in every steps in all cases but the MST and TSV were slightly change that when local body heating. The change of MST were as follows; the first case Δt is 0.11℃, the second case Δt is 0.16℃, the third case Δt is 0.21℃. The difference of TSV were as follows; the first case is 0.75, the second case is 1.5, the third case is 2.0. According to this study, the heating of human local body as sole and/or buttock were a good auxiliary way of the heating in the slightly cool ambient in the winter season.