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Boiler Water.pdf - The Jamaican Sugar Industry

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EFFECTS OF DEPOSIT AND<br />

SCALE FORMATION<br />

1. Heat transfer is retarded<br />

• <strong>Boiler</strong> tube metal temperatures increase. <strong>The</strong> approximate<br />

softening temperature of boiler tube metal is about 900 0 F. If<br />

heat retardation of boiler deposits causes this temperature to<br />

be reached, tube softening and rupture will occur.<br />

• Even when deposit build-up may not be sufficient to cause<br />

tube failure, their insulating effect may still result in reduced<br />

boiler operation efficiency and energy wastage by<br />

allowing excessive heat to exit the boiler with the stack gas.<br />

Confidential and proprietary to Garratt-Callahan Company<br />

55

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