A 2-stage evaporative cooling system (aka "indirect/direct" cooling) represents the most advanced cooling system - utilizing evaporative cooling technology. This cooling option is much more energy efficient than cooling with refrigerant (standard air conditioning), but it's not suitable for all cooling applications. برگرفته از سایت زیر : https://www.drenergysaver.com/cooling-systems/evaporative-cooling/two-stage-evaporative-cooling.html
A 2-stage evaporative cooling system (aka "indirect/direct" cooling) represents the most advanced cooling system - utilizing evaporative cooling technology. This cooling option is much more energy efficient than cooling with refrigerant (standard air conditioning), but it's not suitable for all cooling applications.
برگرفته از سایت زیر :
https://www.drenergysaver.com/cooling-systems/evaporative-cooling/two-stage-evaporative-cooling.html