The study of thermal comfort in school buildings in Thailand air condition room was found that:
The air speed at the same room air temperature was higher, affect to actual sensation to the more
comfortable. While as the room air temperature is increase at the same air speed, the actual sensation
tends to the more hot sensation. Therefore, thermal comfort can be provided by increasing the air speed to
compensate for the higher temperature.
The conditions room air temperature 26, 27, 28°C at air speed 0.5 to 0.9 are conditions accept, when
definition conditions for thermal comfort acceptability that more than 80% of subjects vote for thermal
sensation level from -1 to +1, while room air temperature at 25°C is conditions not accept.
The neutral temperature (PMV=0) increase with increasing of air speed. One can say that as the air
speed increases, the neutral vote shifts to higher room air temperature. In addition, the range of neutral
temperature at all air speed corresponded with thermal comfort acceptability of actual sensation vote
(28r0.5°C), which is the most accepted temperature
The temperature set point was suggested to be increased to 28°C and adjust air speed from 0.5 to 0.9
m/s instead of setting the temperature at 25°C as is the normal set point in most buildings or
recommendatio