Spatial distribution of thermal conditions; air temperature, air velocity, humidity and heat radiation, in four shops of a printing factory were measured. At the same time, thermal sensation vote of workers in these shops was taken in order to investigate the relationship between thermal condition and human thermal sensation.
The investigation was performed fron 8: 30 to 16: 00, in three seasons; summer (air-cooling season), winter (air-heating season) and autumn (non-conditioned season) . DBT (dry bulb temperature), WBT (wet bulb temperature), globe temperature and air velocity were measured at many points on the same horizontal plane at 20cm, 70cm and 120cm above floor. Effective temperature (ET) and corrected effctive temperature (CET) were calculated by the chart.
The horizontal range of DBT was wide in summer and winter, and the vertical range was wide in winter. The relative humidity was 40-60% at the most of the measuring points. Globe thermometer showed about 1.0°C higher than DBT in summer, and a little lower than DBT in winter in average. Air velocity at the most of the measuring points was less than 0.4m/s and the highest velocity was 1.4m/s.
The graded comfort class based on ET or CET was determined in accodance with workers' thermal sensation vote, and percentage distribution of each comfort class were shown in a diagram for the purpose of practical use. [Jpn. J. Biometeor. 17 (2) : 87-94, 1980]