heat from coolant} [2013???01]H05K 7/20272. . . {Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds} [2013???01]H05K 7/20281. . . {Thermal management, e.g. liquid flow control} [2013???01]H05K 7/2029. . {using a liquid coolant with phase change in electronic enclosures