Control of freezing in air-cooled steam condensers

Details Control of freezing in air-cooled steam condensers Control of freezing in air-cooled steam condensers

1975-06-30

1977-09-06

Davis, Jr., Albert W.

Power plants

Motor having exhaust fluid treating or handling means

Having condition responsive control of exhaust structure or...

60690, 165111, 165 32, 165DIG1, F28B 1100

Patent

active

040459616

ABSTRACT:
Damage to steam condensers resulting from freezing of condensate when operating at below freezing ambient air temperature and at low steam flow rates and/or low ambient temperatures is prevented by causing air or other non-condensible inert gas or gases to accumulate in tubes and/or headers of the condenser for a period of time sufficient to substantially lower the heat transfer capacity of the condenser but insufficient to cause damage due to freezing of condensate. The accumulation is caused by shutting off the air takeoff from condensate headers and/or introducing additional air or other non-condensible gas into the apparatus for a controlled, predetermined period of time.

REFERENCES:
patent: 3259177 (1966-07-01), Niemann
patent: 3760871 (1973-09-01), Larinoff

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