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2008•Thermal Power GenerationRequires access

CAUSE ANALYSIS FOR STALL OF AXIAL FANS OPERATING IN PARALLEL

Jiaxin Wang

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Abstract

The stall of a forced draft fan and a primary air fan for boiler no.2 in one power plant has been analysed.Through test and inspection,it was found that the main cause leading to stall of the forced draft fan is reversely installed the outlet guide blades,and that leading to stall of the primary air fan is most higher ventilation resistance and most higher outlet temperature of the coal pulveri-zer.After retrofitting,no stall appears again on the said forced draft fan and the primary air fan.

About this research paper

What this paper is about

The stall of a forced draft fan and a primary air fan for boiler no.2 in one power plant has been analysed.Through test and inspection,it was found that the main cause leading to stall of the forced draft fan is reversely installed the outlet guide blades,and that leading to stall of the primary air fan is most higher ventilation resistance and most higher outlet temperature of the coal pulveri-zer.After retrofitting,no stall appears again on the said forced draft fan and the primary air fan.

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Available abstract

The stall of a forced draft fan and a primary air fan for boiler no.2 in one power plant has been analysed.Through test and inspection,it was found that the main cause leading to stall of the forced draft fan is reversely installed the outlet guide blades,and that leading to stall of the primary air fan is most higher ventilation resistance and most higher outlet temperature of the coal pulveri-zer.After retrofitting,no stall appears again on the said forced draft fan and the primary air fan.

Key concepts: Stall (fluid mechanics), Retrofitting, Mechanical fan, Fan-in, Engineering, Boiler (water heating), Airspeed, Marine engineering

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