Evaporative coolers save a ton of energy compared to refrigerator cycle closed loop systems. Like a swamp cooler, the hot liquid that comes from cooling the server is exposed to the atmosphere and enough evaporates off to cool the liquid by a decent percentage, then it’s refrigerated before going back into the servers.

Data centre near me is using it and the fire service is used to be being called by people concerned the huge clouds of water vapor are smoke

Beatings will continue until morale improves