Heat exchanger having a counterflow evaporator
AssigneeH2Gen Innovations, Inc.
InventorsFranklin D. LOMAX, Christopher Van Dyke, Edward T. McCullough
Life of this patent
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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.
Claims46
An evaporator comprising:
- a lower drum;
- an upper drum;
- at least one tube extending between said lower drum and said upper drum, said at least one tube having an evaporating fluid passageway therein extending from said lower drum to said upper drum;
- and
- a duct having a heating gas passageway provided therein, said at least one tube extending through said heating gas passageway, said heating gas passageway has a gas inlet and a gas outlet,
- wherein said evaporating fluid passageway defines an overall flow path from said lower drum to said upper drum extending in a direction substantially counter-current to an overall flow path defined by said heating gas passageway extending from said gas inlet to said gas outlet.
A method of generating steam comprising:
- providing a fluid flowing from a lower drum through at least one tube to an upper drum;
- providing a heated gas flowing from a gas inlet of a heating gas passageway to a gas outlet of the heating gas passageway such that the heated gas contacts the at least one tube and heats the fluid within the at least one tube from liquid-phase to gaseous-phase,
- wherein the fluid flows through the at least one tube in a substantially counter-current direction to an overall flow path of the heated gas flowing from the gas inlet of the heating gas passageway to the gas outlet of the heating gas passageway.
A method of super heating steam comprising:
- providing an economizer having a fluid flowing within at least one economizer pipe from an economizer fluid inlet to an economizer fluid outlet;
- providing a evaporator having a lower drum connected through at least one tube to an upper drum, where the lower drum receives the fluid from the economizer fluid outlet, and the fluid flows from the lower drum through the at least one tube to the upper drum;
- providing a superheater having at least one superheater pipe with a superheater fluid inlet and a superheater fluid outlet, where the superheater fluid inlet receives the fluid from the upper drum of the evaporator;
- and
- providing a heated gas flowing through a heating gas passageway extending through the superheater, the evaporator, and the economizer, such that the heated gas contacts the at least one superheater pipe, the at least one tube, and the at least one economizer pipe,
- wherein the fluid flows through the at least one tube of the evaporator in a substantially counter-current direction to an overall flow path of the heated gas flowing through the evaporator.
Dependencies are inferred from the claim text.