Heat exchange – Casing or tank enclosed conduit assembly – Conduit coiled within casing
Patent
1987-10-07
1990-04-03
Lazarus, Ira S.
Heat exchange
Casing or tank enclosed conduit assembly
Conduit coiled within casing
165176, F28D 706
Patent
active
049132261
ABSTRACT:
A heat exchanger having an inlet duct for admission of a first fluid to be heated, an outlet duct for discharge of the first fluid after heating thereof, the ducts being arranged in substantially parallel relation, and an assembly of a plurality of heat exchanger tubes connected to the inlet and outlet ducts for receiving the first fluid from the inlet duct to convey the first fluid through the tubes for discharge into the outlet duct. The heat exchanger tubes are of U-shape each including a curved bend region in which reversal of direction of flow of the first fluid is effected. The assembly of heat exchanger tubes extends laterally of the ducts into the path of travel of a second fluid which flows around the tubes in a passage area to effect heat exchange with the first fluid in the tubes. In order to promote heat exchange in the curved bend region of the tubes, the tubes are arranged in a plurality of separate groups adjacent to one another lengthwise of the ducts and the tubes in each group converge towards one another in the curved bend regions to reduce the passage area thereat for the flow of the second fluid around the tubes.
REFERENCES:
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patent: 3746083 (1973-07-01), Tiefenbacher
patent: 3835920 (1974-09-01), Mondt
patent: 4786463 (1988-11-01), Fernandez et al.
Hagemeister Klaus
Hueber Alfred
Lazarus Ira S.
MTU Motoren-Und Turbinen-Union GmbH
Neils Peggy A.
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