Condenser operation with isolated on-line test loop

Details Condenser operation with isolated on-line test loop Condenser operation with isolated on-line test loop

1990-08-09

1991-10-29

Favors, Edward G.

Liquid heaters and vaporizers

Cleaning

122504, 122 1R, 134 2211, 165 1, 165 95, F22B 3718, F22B 3748

Patent

active

050606000

ABSTRACT:
A condenser structure wherein both ends of at least one tube, which is physically located among the other (numerous) tubes of the condenser's tube bundles, is not connected to the inlet water box nor to the outlet water box; instead, this tube is provided with separate inlet and outlet connections. The separate inlet connection is preferably provided with a separately-controlled admixture of water treatment chemicals. Also disclosed is an innovative method of operating a steam condenser. One or more tubes, which are physically located among the other (numerous) tubes of the condenser, are isolated to provide a real-time test loop. The tube thus isolated is chosen to be among the tubes with the highest heat load, so that this tube provides a worst-case proxy for scaling in the other condenser tubes. The isolated tube is frequently inspected for scaling (e.g. at intervals of a week or so), and addition of anti-scaling chemicals to the cooling water is controlled with reference to the scaling (or lack thereof) seen in the isolated tube. Preferably the level of treatment chemicals is held at a lower level in the isolated test loop than in the primary cooling water supply.

REFERENCES:
patent: 4599975 (1986-07-01), Reeve et al.
patent: 4703264 (1987-10-01), Edwards
patent: 4920994 (1990-05-01), Nachbar

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