Heat exchangers

Details Heat exchangers Heat exchangers

1975-03-28

1976-05-18

Sprague, Kenneth W.

Liquid heaters and vaporizers

Indirectly heated

Separate fluid

122406R, 165160, 165163, F22B 106, F22D 700

Patent

active

039570193

ABSTRACT:
U-tubes in a heat exchanger are arranged so that at intervals about the periphery of the tube bundle lanes are formed in the layout for more evenly distributing the flow of downcomer fluid through the entire bundle. Ducts are also provided for distributing downcomer fluid into upper portions of the bundle, the ducts providing a one-way communication between the downcomer area and the central portion of the bundle providing both circulation of fluids and preventing backflow of steam formed in the heat exchanger into the downcomer area. A torus header has outlet nozzles communicating with the lower portion of the heat exchanger which header introduces makeup water to the exchanger which is directed through the nozzles at the top surface of the tube sheet for reducing sludge buildup thereon.

REFERENCES:
patent: 3139070 (1964-06-01), Sprague et al.
patent: 3195515 (1965-07-01), Blizard
patent: 3706301 (1972-12-01), Penfield, Jr.
patent: 3804069 (1974-04-01), Bennett

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