Here’s a video that illustrates our closed loop chilled water system for the AHU.
The megaChannel heat exchangers are pulling hot air from the contained rear of the rack and cooling the air to give 22 degrees C supply air.
As we don’t have a chiller for the test, a large 1CBM tank of water and ice is maintained at the temperature needed for the source water. A series of valves routes the water to travel in series through the heat exchangers. This is when operating in 100% chiller mode without any preFree assistance.