| Keywords |
PMV ; PPD ; Thermal comfort ; Temperature sensation ; Temperature preference |
| Abstract |
The purposes of this study are to investigate neutral PMVs for young korean occupants, and to interpret thermal comfort range of the PMV. The 11 thermal conditions (PMV = ±2) were simulated in an indoor environmental chamber. The background noise level of 45 dBA, illuminance of 880 lux on the participants’ desk, air speed of 0.1 m/s, the clothing ensemble of 0.73 clo were maintained throughout the experimental sessions. Temperature sensation, temperature preference, thermal comfort were evaluated by 50 young korean participants after the thermal adaption period of 55 minutes using the visual analog scale without a center point. Regression models were developed to predict neutral PMVs for each thermal parameters and a PMV-PPD equation was analyzed to compare the traditional Fanger’s PMV-PPD model. The neutral PMVs were positioned between ?0.5 and +0.5 which are known to thermal comfort range, however the lowest PPD was 26.3% when the PMV = -0.18 which was not consistent with Fanger’s model. A new PMV comfort range was proposed using the neutral PMV for the temperature preference which could be interpreted as the most endurable thermal condition for comfort by occupants themselves in this study. |