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Heat recovery apparatus for extracting heat from a hot flue gas stream especially useful on a marine vessel. The apparatus includes a housing having opposite outer end walls, opposite outer side walls, a top wall and a bottom wall with a heat exchanger extending between the end walls spaced downward

Heat recovery apparatus for extracting heat from a hot flue gas stream especially useful on a marine vessel. The apparatus includes a housing having opposite outer end walls, opposite outer side walls, a top wall and a bottom wall with a heat exchanger extending between the end walls spaced downwardly below the top wall, above the bottom wall and inwardly of the outer side walls. An inlet chamber is formed in the housing having an inlet opening in one of the end walls above the heat exchanger for receiving the hot flue gas stream and the inlet chamber includes a downwardly sloping wall for directing the incoming hot flue gas stream to flow downwardly through the heat exchanger toward the bottom wall. A pair of inner side walls are provided on opposite sides of the heat exchanger spaced inwardly of the outer side walls for directing the hot flue gas stream downwardly through the heat exchanger to a low level above the bottom wall. The inner side walls and the inlet chamber wall define a pair of up-flow side chambers between the edges of the heat exchanger and facing outer side walls of the housing for directing flue gases upwardly from the low level for collection adjacent the top wall. An outlet opening is provided in the top wall for exhausting flue gas from the side chambers to a stack or other components.

대표청구항 ▼

[ What is claimed and desired to be secured by Letters Patent of the United States is:] [1.] Heat recovery apparatus for extracting heat from a hot flue gas stream, comprising:housing means having end walls, side walls, a top wall and a bottom wall;heat exchanger means extending between said end wal

[ What is claimed and desired to be secured by Letters Patent of the United States is:] [1.] Heat recovery apparatus for extracting heat from a hot flue gas stream, comprising:housing means having end walls, side walls, a top wall and a bottom wall;heat exchanger means extending between said end walls spaced downwardly of said top wall, above said bottom wall and inwardly of said side walls:a bottomless inlet chamber in said housing means, said inlet chamber having an inner end wall having an inlet opening connected by duct means to an inlet opening in one of said end walls of said housing means above said heat exchanger means receiving the hot flue gas stream and said inlet chamber having an upper wall means for directing said hot flue gas stream to flow downwardly through said heat exchanger means toward said bottom wall;inner side walls connected to said inlet chamber upper wall means and extending on opposite sides of said heat exchanger means spaced apart inwardly of said side walls and spaced upwardly of said bottom wall of said housing means and below said heat exchanger means for directing said hot flue gas stream downwardly to a low level below said heat exchanger means;said inner side walls and said inlet chamber upper wall defining a pair of side chambers between said heat exchanger means and said side walls of said housing means for containing an upward flow of said flue gas from said low level toward said top wall; andan outlet opening in said top wall for exhausting flue gas from said side chambers.