IRJET- Certain Investigation on Induction Motor Performance with Variable Frequency Drive
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This document describes a thermal analysis and design optimization of steam turbine blades. It analyzes blades made of different materials including titanium, nickel, and aluminum alloys. A finite element analysis is conducted using ANSYS to simulate the thermal performance of blades with varying hole sizes and materials. Results show that a titanium alloy blade with 5 holes of 0.5mm diameter performed best with lower equivalent stress, higher cyclic life, and reduced damage compared to blades without holes. The analysis provides thermal properties like heat flux, temperature distribution and life cycle assessment for optimized steam turbine blade design.
![International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 05 Issue: 08 | Aug 2018 www.irjet.net p-ISSN: 2395-0072
© 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1650
3.1 Graphical Results
Chart 1 graph of directional for total heat flux
Chart 2 graph of directional for directional heat flux
Chart 3 graph of directional for temperature
4. CONCLUSION
From the applied data it is found that titanium alloy is
found to show that considering the Total heat flux the
value is stable when compared with the remaining
applied material. The dissipated heat temperature is
comparably low when compared withotherparameters
and hence a stable performance is achieved the holes
created supposed to show good response, in reducing
the heat and also overcome the creep in edges that
creates blow holes. Nickel is found to be the second
choice and bit non-economical but the temperature is
low when compared to aluminum alloy material. The
blade design of Triveni Turbine Company is found to be
used titanium as the main blade material as per also the
results show the supportive performance.
REFERENCES
[1] Wim lai htwe nyin aye design and thermal analysis of
gass turbine blade university of technology ,japan2015.
[2] Dr.darnaraju ruttala rupesh Ramanna structure and
thermal analysis of steam turbine blades using FEM
adarsha college of engineering Kakinada 2006.
[3] S . gowries Et AL studies on the first stage rotore blade“
preliminary design of large swinf turbine blade using
layout optimization techniques “.university of
technology delf the Netherlands 2004 .](https://image.slidesharecdn.com/irjet-v5i8285-180915094747/85/IRJET-Certain-Investigation-on-Induction-Motor-Performance-with-Variable-Frequency-Drive-7-320.jpg)
IRJET- Certain Investigation on Induction Motor Performance with Variable Frequency Drive
- 1. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 08 | Aug 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1644 Design and Thermal Analysis of Steam Turbine Blade Ramesh.S. Devarmani A1, Associate prof. Dr.K. Ramesh A2. 1M.Tech in Thermal Power Engineering,UBDT College of Engineering Davanagere,Karnataka ,India. 2Associate Professor, Dept. of Mechanical Engineering UBDT, College of Engineering Davanagere, Karnataka, India ---------------------------------------------------------------------***---------------------------------------------------------------------- Abstract – the steam turbine is one of the most excellent prime movers in to the mechanical energy duetheessential for steam turbine blades, the many multifunction usedandfor the more applications .the reduction the stresses and increasing the fatigue of life in major concern is high temperature, various technic has used for the increasing the fatigue that is one technic has the axial hole along with blade spam. The thermal using ANSYS 16.2 workbench this software is popularity of the finite element analysis in different types of loading with based material propertiesmoduleswith different holes in turbine blades. Key Words: Thermal Analysis, Steam Turbine moving Blades, FEA, Geometrical/Material Optimization. 1. INTRODUCTION The development days steam turbine moving blades major part of the steam consumption are subjected to the dissimilar types loading such as steam the inertia of centrifugal forces, due to the is forces varieties of stresses are encouraged in the moving blade. Stress and strain mapping on the moving blades, the present paper the static and dynamic behaviour of the moving blades and the basic problem in steam turbine blade increasing the life of the turbine with increasing the holes in the blades .the present paper involving the stress scrutiny of a typical blade made up in nickel alloy that is subjected in the centrifugal forces, the study result show that the centrifugal loading.herethein case of effected thickness , twist and taper of the blade was considered for the deter ermine the von-mises stresses, deformation in Z-direction was determine using the finite element analysis software. The solid bricks 20 –node element are used. 1.1 Components of Steam Turbine The part of the steam turbineiscasingthemostitsfixedin the across the blades, that which have the working fluidhave the unique direction, the portion part of thebladesisthevery high temperature the bladeswill sucked the energy, then the combustor will produce the high pressure turbine and its blades will have very limiting component. The guide blade carrier is the steam condensing the steam turbine where taking factor of correct angle getting in to the moving blades here weare going to use the guides thatwouldbeguideblade they are going to be fixed. And particular rotor it has rotary mechanical machinery who’swho mainaimtoextractenergy condensing the fluid factors finally to the used full work the generation of main power electricity. Figure 1 component of steam turbine 1.2 Impulse and reaction bleeding The differentiation of the impulse and reaction blading taking the concept of the flow of the steam through one stage of fixed along with the moving blades. While in the impulse turbine which will results in the drop of the pressure drop and gets accumulated across the fixed blades and get affected to the nozzles. Finally, these nozzles move the steam with an optimum at a high velocity. Figure 2 impulse and reaction turbine 2. METHODOLOGY The main purpose of the turbine technology are to extract maximum quality of energy from the working fluid to convert it in to the use full work with maximumefficiencyby means of a plant having maximum reliability, minimum cost minimum supervisionand minimumstartingtime.thesteam turbine its power utilizing the energy by burn the fluid and air which is high temperature and high pressure by expanding through the several rings ad fixed moving
- 2. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 08 | Aug 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1645 blades.to get a high pressure of order some high working fluid. What is the solution? In the solution phase of the analysis, the computertakeover analysis simulation over equations that is finite element method generates Figure 3 turbine blade sheet (reference by Triveni) 2.1 Design of Steam Turbine Blade with Hole We are going to consider the existing design (0.5mm holes) and for thermal analysis of the size of the holes of the blades where the thermal capacity is increased. The blade which is designed with 5 holes of 0.5mm is found to be optimum solution Ceramicmatrixcomposites whereverthefibersarea unit embedded in a ceramic matrix, area unit essentials increasing to This blade is hollow a ceramic corewithinform for these particular is inserted in the center. This blade is surrounded with this heat-resistant material the create this shell, so that shell is stuffed under this blade alloy. That step will be a lot of sophisticated for materials, however the method is analogous. Figure 4 steam turbine blades with holes 2.2. Specification of steam turbine blade with holes D=1300.5 mm, N=7600 rpm, L=116mm, d=12mm, Holes Dia 0.5mm The steam turbine rotor blade inlet temperature is 16200/ 900°C Rotor blade outlet temperature is 1478°C. Total thermal heat flux for copperis2.6453MW/m2 Total thermal heat flux for titanium is 0.9927 MW/m2 Total thermal heat flux for nickel is 1.9559 MW/m2. Figure 5 velocity profile of steam turbine blade with hole 2.3. Choice of Steam Turbine Blade The choice made here is going to be depending upon the factors like very important is rotor blades etc, the steam which is going to be incident upon there also again and get the deflection of the gas through an very factors consideration are the specified angle where the consideration are done with the result obtained as the minimum loss. Figure 6 convectional; steam turbine of the choice of blade angle
- 3. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 08 | Aug 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1646 Figure 7 velocity diagrams for steam turbine blade For steam V= 1 Peripheral Velocity of Blade U= = = 955.06 m/s …………………..(1) 2 Applying for Continuity Equation for Nozzle Outlet =MV M= = 12.53 kg/s ……….….(2) 3 Applying Continuity Equation for Blade Outlet sin = MV = = 500.3 m/s ………………………………(3) 4 In The Velocity Diagram As per Based on Diagram = 230 m/s = 350 m/s = 250 m/s Now = = = 106.6 Kj/kg = = = 38.33 KJ/Kg ….. (4) 5 Heat Drop in Stage = 1814.7 Kj/Kg ………………………………..... (5) 6 The Outlet Angle of Moving Blades (β2)=20 …………………………………………………..(6) 7 Degree of Reaction = = 21.06 %.................................................(7) 8 Gross Efficiency = = 82.53% ………………………………….…………(8) 9 Blade efficiency ( = =87.5%withhole……………………..………(9) 2.4. Catia Design The geometric modeling of steam turbine blade angle with holes and type cross-sections is done using Catia. Thethree- dimensional model of the steam turbine blade shown in below figure Figure 8 Catia module steam turbine blade inlet heat with holes Figure 9 Catia module heat distributions in blade hole 2.4 Ansys Design Figure 10 geometry input in Ansys
- 4. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 08 | Aug 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1647 Figure 11 mess generation in Ansys Figure 12 steady state thermal Heat Flux W/mm2 Figure 13steady sate thermal convection w/mm2 2.5 Properties of Material Titanium Alloy Table 1 properties of titanium alloy Figure14 steady state direction of heat flux in w/mm2 graph 1 direction of heat flux in w/mm2vs. specific entropy kj/kg Figure 15 steady state thermal total heat fluxes in w/mm2 Figure 22 steady state thermal temperatures in 0c Figure16 steady state thermal temperatures 0c
- 5. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 08 | Aug 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1648 Graph3 temperature in0c vs. specific entropy kj /kg 2.6 Nickel alloy Figure 17 steady state thermal directional heat fluxes in w/mm2 Graph 4 directional heat flux w/ mm2vs. specific entropy kj/kg Figure 18 steady state thermal total heat fluxes in w/mm2 Graph 5 total heat flux w/mm2vs. specific entropy kj/kg Figure 19 steady state thermal temperatures in 0c Graph6 temperatures in 0c vs. specific entropy kj/kg Aluminum Alloy Figure20 steady state direction of heat flux w/mm2
- 6. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 08 | Aug 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1649 Graph 7 directional heat fluxes in w/mm2vs specific entropy in kj/kg Figure 21 steady state thermal total heat fluxes in w/mm2 Figure 22 steady state thermal temperatures in 0c Graph 8 temperature in (t)0c vs specific entropy (s)in kj/kg 3. RESULT AND COMPARISON Table 1 theoretically result of titanium, nickel and aluminum alloys Material Total Heat Flux Directional Heat Flux Temperature Titanium Alloy 0.3399 0.16114 900 Nickel Alloy 0.68853 0.32634 1800 Aluminum Alloy 0.3400 0.16115 2200 Table 2 blade specification with and without holes Blade specification Equivalent stress Cyclic life Damage Sensitivity Blade Without holes 209.48 N/mm2 6.53E5 46234 3.26E5 Blade with 2mm holes 159.18 N/mm2 7.30E5 16884 1E5 Blades with 4mm holes 164.19 N/mm2 6.214E5 3654 1E6 Blades with 5mm holes 134,15 N /mm2 5.703E5 39456 4.76E5
- 7. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 08 | Aug 2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1650 3.1 Graphical Results Chart 1 graph of directional for total heat flux Chart 2 graph of directional for directional heat flux Chart 3 graph of directional for temperature 4. CONCLUSION From the applied data it is found that titanium alloy is found to show that considering the Total heat flux the value is stable when compared with the remaining applied material. The dissipated heat temperature is comparably low when compared withotherparameters and hence a stable performance is achieved the holes created supposed to show good response, in reducing the heat and also overcome the creep in edges that creates blow holes. Nickel is found to be the second choice and bit non-economical but the temperature is low when compared to aluminum alloy material. The blade design of Triveni Turbine Company is found to be used titanium as the main blade material as per also the results show the supportive performance. REFERENCES [1] Wim lai htwe nyin aye design and thermal analysis of gass turbine blade university of technology ,japan2015. [2] Dr.darnaraju ruttala rupesh Ramanna structure and thermal analysis of steam turbine blades using FEM adarsha college of engineering Kakinada 2006. [3] S . gowries Et AL studies on the first stage rotore blade“ preliminary design of large swinf turbine blade using layout optimization techniques “.university of technology delf the Netherlands 2004 .