AZ ROC C-58 CR-58 Evaporative Cooling & Ventilation Practice Questions - Arizona ROC C-58 CR-58 Evaporative Cooling And Ventilating Examination Exam

What is the primary operational mechanism of a direct evaporative cooling system operating in dry desert climates?

Passing outdoor air over wetted media, causing water to evaporate into sensible heat, reducing air dry-bulb temperature while increasing specific humidity. Circulating chilled water through a sealed closed coil without adding moisture to the supply airstream. Compressing vapor refrigerant to absorb latent heat from outdoor air before discharging it into the space. Utilizing chemical desiccants to absorb air moisture before passing the air through a secondary condenser coil.

Correct Answer:

Passing outdoor air over wetted media, causing water to evaporate into sensible heat, reducing air dry-bulb temperature while increasing specific humidity.

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