Evaluation of Combined Heat Transfer Coefficient on Each Body Part of Thermal Manikin and Its Impact on Equivalent Temperature by Means of Measurement

Abstract

Combined heat transfer coefficient hcal of naked thermal manikin in standard environment was investigated for evaluation of equivalent temperature Teq defined in ISO14505 through the measurement in climate chamber with displacement ventilation. Calculating the value of the reference temperature from the local air temperature and the local wall temperature derived the more uniform value of the hcal than that from the average air temperature. The sensitivity of hcal to Teq was derived and evaluated. It could be larger with the naked part under the air-cooling condition than the clothed under the air-heating condition. 1-W/m2K difference on Teq could affect on the actual human sensation.