Abstract

This paper describes the 250,000-kw supercritical-pressure addition to the Avon Plant of The Cleveland Electric Illuminating Company. Special features of the third supercritical-pressure unit designed for an American central station include the use of a monotube once-through boiler, combination motor and turbine-driven boiler feed pumps, extruded pipe for main steam leads, condenser by-pass demineralization system, and a high-temperature water-heating system for the plant addition.

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