Optimization of Centrifugal Fan Load Regulating in a Commercial CFB Boiler

Abstract:

The performances of centrifugal fans, two primary air fans and two secondary air fans were tested in BECR load and were compared with design parameters. The results show that air fan capacity excesses in practical BECR are 40% and 80%, beyond the design value. An operation optimization test offers the suggestions that keep inlet baffles completely open and regulate air fan loads only by hydraulic couplers. It earns about 20A of the primary air fan d_i,o, where input voltage is 6000V. The secondary air fan motor d_i,o changes from 2-27A depending on the fan load. A driver upgrading prediction shows that the primary air fan d_i,u would have been over 75A, and the primary air fan d_i,u would have been over 90A, if the hydraulic couplers are substituted for variable-frequency drive.

• Periodical: Advanced Materials Research (Volumes 1070-1072)
• Pages: 1758-1763
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1070-1072.1758
• Online since: December 2014
• Authors: Jin Jing Li*, Zhen Ning Zhao, Zhan Guo Li, Qing Feng Zhang
• Keywords: Centrifugal Fan, Energy Conservation, Hydraulic Coupler, Inlet Baffle, Variable-Frequency Drive

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