The coloured lines on the psychrometric chart below compare Climate Wizard’s performance to that of a direct evaporative cooler on a hot day.

Consider fresh air entering the cooler at 38°C (100°F) dry-bulb and 15% relative humidity. If the cooler is a direct evaporative air cooler, the fresh air passes directly through the wet cooling pad where it becomes cool and also moist, and emerges at about 22°C (71.6°F)dry-bulb and 75% relative humidity. The process has travelled along the wet-bulb line and the air has gained about 6.5 grams/kg (dry air) of moisture.

If the cooler is an indirect evaporative air cooler, the fresh air passes through the dry channel where it is super-cooled and emerges at about 16°C (61°F). But, no moisture has been added as the cooling process has occurred along the constant moisture line. The ‘wet-bulb effectiveness’ of Climate Wizard is about 125%, whereas regular direct air coolers have a wet-bulb effectiveness of about 85%.

The Climate Wizard Supercool has a further direct evaporative cooling process directly after the indirect evaporative process. This allows the Supercool to provide an additional reduction in the supply temperature while adding minimal water content.