Estimation of thermal sensation using PMV and SET under high air movement conditions

Abstract

1. 1. Our previous experimental results showed the thermal sensation vote was much less than the values of PMV and SET ∗ at air velocities above 0.5 m/s. 2. 2. The method to modify SET ∗ is presented from the results of subjective experiments taking account of decrease in clo value of summer clothing and decrease in skin wettedness due to increased air velocity. 3. 3. Thermal resistance under increased air movement on a standard summer clothing ensemble was measured. Basic thermal insulation of the summer ensemble was reduced by 25% at air velocity of 1.0 m/s. 4. 4. Thirty-two subjects were exposed at operative temperatures of 27 and 30°C under 1 m/s air movement in order to determine the amount of skin diffusion. Measured evaporation heat loss from skin surface was much smaller at air velocity of 1 m/s than that predicted by SET ∗. 5. 5. Estimated thermal sensation vote using modified SET ∗ agreed well with our previous experimental results under different air velocities for the same clothing.