Abstract :
THIS newest steam station of the Duke Power Company, Charlotte, N. C., was placed in operation in October 1929 with an initial capacity of 137,500 kva., about one-fourth of the expected ultimate. Each of the two generating units operates at 1,800 r. p. m. with steam at 425 lb. gage and 725 deg. fahr., delivering energy at 13 kv. Each of the four cross-drum boilers has 35,500 sq. ft. of heating surface and is designed for 500-lb. working pressure; maximum furnace heat liberation is 30,000 B. t. u. per hr. per cu. ft. of volume. Pulverized coal is burned; the supply being received by rail. With this station the steam-electric capacity of the Duke system passed the 50-per cent point.
