Patent ID: 7677300

Claim:
A heat exchanger comprising: a plurality of metal walls, each metal wall comprising two sides, a boiling side with a porous, enhanced boiling layer comprising brazed, thermally conductive particles comprising a highly proportioned aluminum alloy powder mixed with a eutectic alloy of aluminium and silicon integrally bonded together and metallurgically bonded to the boiling side and a cooling side, said boiling side of said plurality of metal walls defining a boiling passage and said cooling side of said plurality of metal walls defining a cooling passage and each of said plurality of metal walls further including a bonding surface; a spacer member for spacing metal walls from each other; a layer of metal between said bonding surfaces of said metal walls and said spacer member in said heat exchanger, said layer of metal having a melting temperature that is less than a melting temperature of said enhanced boiling layer; a boiling inlet for delivering liquid to said boiling passage; a cooling inlet for delivering fluid to said cooling passage; a boiling outlet for recovering vapor from said boiling passage; and a cooling outlet for recovering fluid from said cooling passage.