Heat exchanger having a counterflow evaporator
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United States of America Patent
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Feb 8, 2011
Grant Date -
May 8, 2008
app pub date -
Nov 7, 2006
filing date -
Nov 7, 2006
priority date (Note) -
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Abstract
An evaporator including a lower drum, an upper drum, and at least one tube extending between the lower drum and the upper drum. The plurality of tubes have fluid passageways therein extending from the lower drum to the upper drum. A duct is provided having a heating gas passageway provided therein. The at least one tube extends through the heating gas passageway. The fluid passageways define an overall flow path from the lower drum to the upper drum extending in a direction substantially counter-current to an overall flow path defined by the heating gas passageway extending from a gas inlet of the heating gas passageway to a gas outlet thereof.
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