Heat exchange apparatus

Details Heat exchange apparatus Heat exchange apparatus

1976-09-17

1978-07-25

Myhre, Charles J.

Heat exchange

With cleaning means for heat exchanger

165 97, 165174, F28F 1900

Patent

active

041023935

ABSTRACT:
An improvement in heat transfer and a reduction in fouling by liquid flowing inside of heat exchanger tubes is achieved by the apparatus and method of the present invention wherein the heat exchanger includes internally ridged or corrugated metal tubes rather than conventional plain tubes. Despite the formation of a normal appearing fouling layer on the downstream portion of a ridge, the ridged tubes remain relatively clear on the upstream portion of the ridge. Periodically, as the downstream portions of the tubing ridge surfaces build up a fouling coating, the flow direction of the tube side fluid is reversed to remove at least a substantial portion of the previously deposited coating.

REFERENCES:
patent: 1297292 (1919-03-01), Cammen
patent: 1464269 (1923-08-01), Krakan
patent: 1611475 (1926-12-01), Maxim
patent: 2040704 (1936-05-01), Modine
patent: 2487484 (1949-11-01), Simpelaar
patent: 2490759 (1949-12-01), Tyden
patent: 2731242 (1956-01-01), Borg
patent: 2864588 (1958-12-01), Booth
patent: 3627014 (1971-12-01), Akashi
patent: 3770050 (1973-11-01), Nakanishi
patent: 3971667 (1976-07-01), Blaude

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