Abstract:
This thesis is an engineering study of comfort environment in office building to determine the effect of illumination, acoustic and thermal environmental on Thai subjects using data obtained from office works. Result from statistical analysis showed that the multiple linear regression equation of illumination is a function of illuminance level wall reflectance and age having a coeffient of determination of 0.527. If thevariables are substituted into the illumination equation with wall reflectance 60% age 28 years, the comfort illumination level is found to be 420 lux. The multiple linear regression equation of acoustic is a function of background noise, age having a coefficient of determination of 0.468 If the variables are sunstituted into the acoustic equation with age 28 years, the background noise is found to be 54 dBA. By using of Praphons equation (1) to find the comfort air temperature foe Thai, substituting the variables into the equation with sedentary activity, clothing thermal resistance 0.6 clo, it is found the comfort air temperature is found to be 23.9 °c