Method for cleaning inner surfaces of heat-transfer tubes in a h

Details Method for cleaning inner surfaces of heat-transfer tubes in a h Method for cleaning inner surfaces of heat-transfer tubes in a h

1986-10-23

1988-06-14

Lazarus, Ira S.

Heat exchange

With means flexing, jarring or vibrating heat exchange surface

165 95, 122390, 134167C, F28G 700, F28G 900

Patent

active

047505478

ABSTRACT:
An improved method for cleaning inner surfaces of heat-transfer tubes in a heat-exchanger of a multi-tube type is disclosed, in which each of the heat-transfer tubes on its inlet end is provided with a washing head including a combination of an ejecting nozzle with an ultra-sonic generator, which washing head may eject a high pressure liquid or gas to produce a turbulent flow in the heat-transfer tubes and further generate an ultra-sonic wave against the liquid in the tubes, thereby to achieve efficient release and removal of deposit, such as scales of incrustation and rust, from the inner surfaces of the heat-transfer tubes.

REFERENCES:
patent: 3364983 (1968-01-01), Krinov et al.
patent: 3468517 (1969-09-01), Goodman et al.
patent: 4244749 (1981-01-01), Sachs et al.
patent: 4366003 (1982-12-01), Kozte et al.
patent: 4562885 (1986-01-01), Pausch
patent: 4589898 (1986-05-01), Beaver

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