Abstract
The purpose of this paper is to propose optimum thermal comfort zone in floor cooling based on the experimental data. Experiments were conducted under the following conditions in a cooled floor room. There were thirteen combinations of floor surface and air temperature. Air temperature was set to three cases (t_a=25, 27, 29, 31℃). Floor temperature was set three cases (t_f=t_a, t_a-1, t_a-2, t_a-3℃). Relative humidity and air velocity were kept constant level of 60% and less than 0.2m/s. There were sixteen Japanese young female. The following results were obtained. The thermal neutral vote was associated with operative temperature corrected by conduction of 27.0℃ and with mean skin temperature corrected by conduction of 33.7℃. The optimum thermal comfort zone for leg-out sitting positioned Japanese in floor cooling was represented with the operative temperature corrected by conduction of 24.5 to 29.5℃. Floor cooling equipment could set air temperature to a higher side than air conditioning equipment. According to the cooling effect of floor cooling by the heat conduction and thermal radiation, it could contribute to energy saving.
