| 수록사항 |
한국생활환경학회지 , v.9 n.4(2002-12) |
| 주제어 |
; Skin Temperature ; Blood Flow Rate ; Floor Covering ; ONDOL |
| 요약1 |
This study was performed to suggest fundamental data on physiological response by the thickness variations of wooden floor covering. The experimental chamber having automatic control system was constructed, and the system can control not only air temperature but also surface temperature and humidity ratio. The air and wall surface temperature were set 20oC, relative humidity 50%, and air velocity 0.2 m/sec, and the temperature of the supply water flowing into the floor coil was set 20oC. The floor covering material was varied from mortar only (thin paper finishing), to 2.7 mm thickness plywood, 7.5 mm, and 12 mm. 8 healthy college students volunteered the experiments at sitting posture on the floor. Skin temperatures at 8 points and blood flow rates were measured. To evaluate the heat transfer between human body and finishing materials, the contact point temperature was measured. According to these experiments, following results were obtained; (1) The mean skin temperature at the 12 mm plywood covering was recorded 0.8oC higher than that of mortar finishing floor. (2) The contact point temperature between floor finishing and buttock, reached 24.4oC in mortar and it reached 29.9oC in 12 mm plywood. (3) In the respect of the blood flow rate at fingertip, the difference between mortar finishing and 12 mm plywood was recorded as 1.94 mg/min/100 g. Also, at the toe-tip, the difference was 0.77 mg/min/100 g. The Wooden floor is more human body friendly system more than mortar finishing floor, when the finishing wood has the 12 mm thickness more. |
