8/6/2019 Performance Improvement of FD Fan

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PERFORMANCE IMPROVEMENT OF 210 MW FD FAN WITH

NEW BLADE PROFILE USING CFD (O&M CONFERENCE-2009).

O&M

Knowledge Management System

BOILER

Paper Presentation On Performance Improvement Of 210 Mw Fd FanWith New Blade Profile Using CFD

Date &Venue: February 13-15, 2009 at PMI, NTPC, NOIDA

Organized by: Corporate OS, NTPC LTD

Contributors:

R.Babu Mgr/Fans K.Gopalsamy SDGM/Fans M.Satyamoorthy

AGM/Fans,G,D&DP , BAP,BHEL,RANIPET

Uploaded by : T.V.RAO, DGM(HRD),PMI,9650992747

8/6/2019 Performance Improvement of FD Fan

2/2

PERFORMANCE IMPROVEMENT OF 210 MW FD FAN WITH

NEW BLADE PROFILE USING CFD

R.Babu Mgr/Fans K.Gopalsamy SDGM/Fans M.Satyamoorthy AGM/Fans,G,D&DP

BAP,BHEL,RANIPET

ABSTARCT

In typical power plant , for Boiler we have auxiliary equipments like ID , PA and FD

Fans whose s power consumption is considerably high. Power saved is power generated

hence there is thrust to reduce auxiliary power consumption . Usage of advance techniques

like Computational Fluid Dynamics(CFD) will help in proper design of flow systems and can

help in reducing the power consumption.

The paper describes a typical sequence modeling and performance enhancement

of 210 MW Forced Draft(FD) Fan using ANSYS CFX tool. CFX tool was chosen because it is

good for grid generation for the optimization of turbo machinery blade shapes as Fig.1 like

FD Fan. The components of FD fan like Suction Chamber ,blade ,Outlet Guide Vane (OGV) ,

Diffuser were modeled and meshed with good grid quality using ICEM CFD and turbo grid.

Flow patterns were simulated and studied using the tool and the effect of profile,

staggering of profile, camber , incidence angle etc on the aerodynamic performance of FD fan.

The parameters like mass flow , pressure, power and efficiency was studied with the

existing blade profile design as shown in Fig2. Iteratively the parameters like blade profile ,

staggering of blade , incidence angle etc were optimized with the interaction between CFD

algorithms and turbo machinery expertise database to enhance the performance and reduce

the power consumption. In this work results indicated that 5% efficiency increase and in turn

the auxiliary power consumption of FD fan will be reduced by only replacing the optimized

blade.

In the current competitive scenario, saving power on auxiliary equipment leads to plant

efficiency improvement and fuel saving.

FIG 1: FULL VIEW OF NEW BLADE FIG 2: CFD RESULT OF FD FAN

Keywords: FD Fan , Blade profile , Efficiency , Diffuser , Power saving by CFD

References

1 Bakker A., Haidari A.H. & Oshinowo L.M. (2001) Realize greater benefits from CFD,

CEP, AIChE, March 2001, pp. 45- 53.

2 Sierrs, G., and Papailiou, K.D., The design of small centrifugal compressors using

advanced computational methods, ERCOFTAC Bulletin Sept. 1999.