Patent ID: 8550153

Claim:
An evaporative heat exchanger operable to at least partially vaporize fluid, the heat exchanger comprising: a plurality of parallel flow passages extending through the heat exchanger, together the plurality of flow passages defining a first fluid flow path; and a plurality of substantially parallel stacked plates interleaved with the parallel flow passages, each plate having a first end and a second end spaced apart from the first end and at least partially defining: a first set of flow channels extending from the first end to the second end; a second set of flow channels extending from the first end to the second end parallel to the first set of flow channels, the first and second sets of flow channels together comprising a first flow pass of a second fluid flow path; a third set of flow channels extending from the first end to the second end and comprising a second flow pass of the second fluid flow path substantially parallel to the first flow pass of the second fluid flow path; a first collection manifold adjacent to the second end, positioned beyond the first set of flow channels and connecting the first and second passes; and a second collection manifold between the first end and the second end, the second collection manifold intersecting the second set of flow channels and at least some of the third set of flow channels.