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

The indirect stage cools primary supply air sensibly through a heat exchanger without adding moisture to the supply air. The indirect stage adds moisture directly to the supply air to achieve 100% relative humidity before entering the building. The indirect stage uses electric heating elements to pre-warm outdoor air before passing over aspen pads. The indirect stage relies on a mechanical compressor to chill water inside the sump basin.