Evaporative Cooling Comfort

The comfort of an person is mainly dependent upon the following factors:

• Temperature
• Humidity
• Airflow
• Clothing
• Work Rate

An evaporative cooler decreases temperature and increases air flow but increases humidity. The effect of the temperature reduction far outweigh the increase in humidity. Any additional air flow further improves the comfort level. This is shown in the diagram below

The evaporative cooler changes the hot conditions typically found in UK buildings and changes it from an ‘Extreme Caution’ level to a ‘OK’ situation.

The above is based on a study performed by J G Steadman