CFBCAD©, an Expert system developed jointly by the authors, is used to investigate into the effect of steam parameters on the size and configuration of circulating fluidized bed (CFB) boilers. Resulting data would assist designers and users to appreciate the influence of steam cycle parameters on the overall design of CFB boilers. The paper studies the effect of different steam cycles ranging from small capacity, low pressure boilers without reheat, to large capacity, high pressure reheat boilers. The drum pressure exerts an important influence on the area as well as the configuration of heating surfaces. The temperature difference between the flue gas and the feed water inlet temperature has an optimum value for minimum heat transfer surface requirement.

Issue Section:
Power
Topics:
Boilers, Expert systems, Fluidized beds, Steam, Cycles, Pressure, Temperature, Design, Feedwater, Flue gases, Heat transfer, Heating, High pressure (Physics)
1.
Fraser, S., Schaller, B., and Darguzas, J., 1991, “Design of a 165 MWe Reheat Coal Fired CFB Boiler,” Proc. 11th Int. Conf. on Fluidized Bed Combustion, Vol. 1, E. J. Anthony, ed., ASME, New York, pp. 41–50.
2.
Gottung, E. G., and Darling, S. L., 1989, “Design Considerations for Circulating Fluidized Bed Stream Generation,” Proc. 11th Int. Conf. on Fluidized Bed Combustion, A. Manaker, ed., ASME, New York, pp. 617–624.
3.
Gounder, P. K., Antonio, F., and Pyykkonen, A., 1993, “Ahlstrom Pyropower’s Reheat Experience,” preprint from 4th Int. Conf. On Circulating Fluidized Bed Technology, Somerset, PA, USA, American Institute of Chemical Engineers, p. 205.
4.
CFBCAD—An Expert System, 1996, Greenfield Research Inc., Box 25018, Halifax, Canada, B3M 4H4.
5.
Isaka, H., Hyvarinen, K. H., Morita, A., Yano, K., and Ooide, M., 1989, “Design Considerations for Circulating Fluidized Bed Stream Generation,” Proc. 10th Int. Conf. on Fluidized Bed Combustion, Vol. 2, K. J. Heinschel, ed., ASME, New York, pp. 783–791.
6.
Lafaneche`re
L.
,
Basu
P.
, and
Jestin
L.
,
1995
a,“
Effects of the Fuel Parameters on the Size and Configuration of Circulating Fluidized Bed Boilers
,”
Journal of Institute of Energy
, Dec, Vol.
68
, pp.
184
–
192
.
7.
Lafaneche`re, L., and Jestin, L., 1995b, “Study of a Circulating Fluidized Bed Furnace Behavior in Order to Scale it up to 600 MWe,” Proc. 13th Int. Conf. on Fluidized Bed Combustion, Vol. 2, K. J. Heinschel, ed., ASME, New York, pp. 971–980.
8.
Lewnard, L., Herb, B. E., Tsao, T. R., and Zenz, J. A., 1993, “Effect of Design and Operating Parameters on Cyclone Performance for Circulating Fluidized Bed Boilers,” Circulating Fluidized Bed IV, A. A. Avidan, ed., American Institute of Chemical Engineers, pp. 525–531.
9.
Lucas, Morin, Semedard, Jaud, Joos, Masniere, 1993, Utility-Type CFB boilers: 250 MWe and beyond, Proc. 12th Int. Conf. on Fluidized Bed Combustion, Vol. 1, L. N. Rubow, ed., ASME, New York, pp. 9–15.
10.
Stultz, S. C., and Kilto, J. B., eds., 1992, Steam: its Generation and Use, 40th ed., Babcock Wilcox, Barberton, OH, p. 1–5.
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