The measurement of IAQ
The temperature was measured first inside both of the building at selected areas before assessing the level of indoor air quality. In order to determine the evenly distribution of the air and the consistency of the buildings, the measurement of the temperature was taken periodically using Q-Trak. Then, a Velocicalc was used to measure the humidity the air movement,air flow, ventilation, volume of air supply and velocity of the building. For the air quality assessment, the level of CO2 was used as the main indicator. Air supplied,outside air and return air inside the Air Handling Unit (AHU) was measured.