ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,661, issued on March 24, was assigned to TRANE INTERNATIONAL INC. (Davidson, N.C.).
"Free cooling system for low ambient temperatures" was invented by William B. Fox (Onalaska, Wis.), Jacob L. Gregg (Pueblo, Colo.), Robert J. Larrinaga (Pueblo West, Colo.), Todd Duncan (La Crosse, Wis.) and Daryl Keys (La Crosse, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A free cooling system includes a circulation path including a pump and one or more heaters. The pump is configured to circulate a process fluid when the free cooling system is deactivated, and the one or more heaters are configured to add heat to the process fluid in the circulation path ...