Heat exchange unit
AssigneeHelical Energy Limited
InventorsMark Wickham, Christopher Wickham
Life of this patent
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Abstract
There is provided a heat exchange unit (1) for recovering heat energy from a hot gas, the heat exchange unit comprising an inlet duct (11) for receiving the hot gas, a heat exchange duct (22) having a heat exchanger (25) for recovering heat from the hot gas, and a bypass duct (24) which bypasses the heat exchange duct and the heat exchanger, wherein the heat exchange unit further comprises a damper (30) configured to apportion the hot gas from the inlet duct (11) between flowing through the heat exchange duct (22) and flowing through the bypass duct (24), wherein the damper (30) is in the shape of a cone, or comprises rotatable shafts with paddles having two sides that converge towards one another to define a taper in the paddle, the taper directed radially away from the shaft.
Claims17
A heat exchange unit for recovering heat energy from a hot gas, the heat exchange unit comprising an inlet duct for receiving the hot gas, a heat exchange duct having a heat exchanger for recovering heat from the hot gas, and a bypass duct which bypasses the heat exchange duct and the heat exchanger, wherein the heat exchange unit further comprises a damper configured to apportion the hot gas from the inlet duct between flowing through the heat exchange duct and flowing through the bypass duct, wherein the damper is in the shape of a cone and comprises a plurality of shafts extending from a base of the cone towards an apex or frustum of the cone, the shafts fitted with paddles for opening and closing the heat exchange duct and bypass duct, wherein the shafts are rotatable to move the paddles to apportion the hot gas between flowing through the heat exchange duct and flowing through the bypass duct.
Dependencies are inferred from the claim text.