Patent ID: 8297069

Claim:
A modular scalable coolant distribution unit (CDU) comprising: a primary coolant loop comprising connect coupling for fluid communication with at least one cooling source; a secondary coolant loop comprising connect coupling for fluid communication with at least one equipment heat exchanger; an expansion tank in said secondary coolant loop; a heat exchanger in fluid communication with said primary coolant loop and in fluid communication with said secondary coolant loop wherein heat is exchanged between said primary coolant loop and said secondary coolant loop; at least one valve in said primary coolant loop return line; at least one pump in supply line of said secondary coolant loop; a first secondary coolant loop valve in said supply line of said secondary coolant loop between said at least one pump and an expansion tank; an automatic fill system in fluid communication with said supply line of said secondary coolant loop; at least one coolant temperature sensor for said secondary coolant supply line; at least one dew point sensor monitoring dew point of facility housing said at least one equipment heat exchanger; a second secondary coolant loop valve in said secondary supply line between said pump and said at least one equipment heat exchanger; a controller in communication with at least said at least one valve in said primary coolant loop return line, said at least one pump, said at least one dew point sensor, and said at least one coolant temperature sensor, wherein multiple characteristics of said at least one valve in said primary coolant loop, said at least one pump, and said at least one coolant temperature sensor are configured to balance heat transfer between said at least one cooling source and said at least one equipment heat exchanger; and wherein when in operation, said CDU delivers conditioned coolant to said at least one equipment heat exchanger from said at least one cooling source.