Reducing auxiliary power consumption with F. D. fans
- PSI Energy, Cayuga Generating Station, Cayuga, IN (US)
On June 6, 1988, the Unit No. 1-A forced draft fan at Cayuga station failed in service. This failure and the subsequent replacement of the 1-A F.D. fan and 1.-B F.D. fan with a more energy efficient design, resulted in a reduction in auxiliary power consumption by 2,000 Kilo watts/hr. Annual savings are projected to be $129,000.00 for 1989. Cayuga station was designed and constructed with pressurized boilers. The forced draft fans supplied combustion air, and also were designed to force this air through the entire boiler. In 1975, induced draft (I.D.) fans were installed. This design change modified the boiler to a balanced draft system, which reduced the force or pressure of the air that the F.D. fans were required to supply. Operating as a balance draft unit, the station had considerably more F.D. fan capacity than was necessary. After the failure, a system and economic evaluation warranted a change in design specifications for the F.D. fans, with the quantity of air remaining unchanged, but supplied at a lower pressure. This paper deals with the cause of failure, economic details and justification of the new design fans, as well as the final testing of the fans after being placed in service.
- OSTI ID:
- 5794218
- Report Number(s):
- CONF-901034-
- Resource Relation:
- Conference: ASME/IEEE joint power generation conference, Boston, MA (USA), 21-25 Oct 1990; Other Information: Technical Paper 90-JPGC/Pwr-68
- Country of Publication:
- United States
- Language:
- English
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