Heat recovery apparatus and heat recovery method

Patent · Tue Apr 22 00:00:00 EST 1986

OSTI ID:5815689

Gordon, Jr, M K

A heat recovery apparatus is described for boilers, or the like consisting of: a heat recovery housing generally having a pair of side walls, a pair of end walls connected to the side walls, a top and a bottom; a combustion gas inlet disposed within the bottom; a combustion gas outlet positioned within the top; a plurality of interconnected water conduit tubes provided with a cold water inlet in communication with one of the end walls and a hot water exit in communication with one of the end walls and circuitously passing through the heat recovery housing; a tube roof interconnected between the pair of end walls above the water conduit tubes and above the cold water inlet and above the hot water exit; a plurality of by-pass dampers pivotally connected between the pair of end walls such that when the by-pass dampers are in a closed position the closed by-pass dampers define a generally flat by-pass structure angularly disposed with respect to a horizontal plane and extending between the pair of end walls and extending from one of the pair of side walls up to the tube roof in order to divert or change the direction of flow of combustion gases from the combustion gas inlet toward the water conduit tubes; a condensate drain positioned in the bottom of the heat recovery housing and underneath the water conduit tubes; a plurality of exit dampers pivotally connected between the pair of end walls such that when the exit dampers are in a closed position the closed exit dampers define a generally horizontal flat exit structure extending between the pair of end walls and from the tube roof to the opposed other wall of the pair of side walls from which the bypass dampers extend from in order to be pivotally opened to allow the flow of combustion gases from the water conduit tubes to the combustion gas outlet.

• Assignee: NOV; EDB-86-110152
• Patent Number(s): US 4583494
• OSTI ID: 5815689
• Resource Relation: Patent File Date: Filed date 21 Feb 1985
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
BOILERS
HEAT RECOVERY
FLUE GAS
HEAT RECOVERY EQUIPMENT
DESIGN
CONDENSATES
DRAFT CONTROL SYSTEMS
HOT WATER
INCIDENCE ANGLE
PIPES
WALLS
WASTE HEAT UTILIZATION
CONTROL EQUIPMENT
ENERGY RECOVERY
EQUIPMENT
FLOW REGULATORS
GASEOUS WASTES
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
RECOVERY
WASTE PRODUCT UTILIZATION
WASTES
WATER
421000* - Engineering- Combustion Systems