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Ultra low head turbine for Nepal
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Ultra low head turbine for Nepal


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Ultra low head turbine is the turbine type that accommodate in the site having head less than 5 m and discharge of above 0.5 cubic meter per second.It works on the principle of static pressure …

Ultra low head turbine is the turbine type that accommodate in the site having head less than 5 m and discharge of above 0.5 cubic meter per second.It works on the principle of static pressure differences and can be installed on the small riverlets, man made canals and Natural

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  • Later on through supervisor guidance and detailed studies we were able to counter this problem.
  • Transcript

    • 1. FINAL PRESENTATION ON Study of Ultra Low Head Turbine for Nepal
    • 3. ACKNOWLEDGEMENT Project Supervisor Prof. Dr.- Ing. Ramesh Kumar Maskey Department of Civil and Geomatics Engineering Project co-supervisor Dr. Hari Prasad Neopane Associate Prof. & EnPe-MPPOES Department of Mechanical Engineering Project Co-ordinator Mr. Anup K.C. Department of Mechanical Engineering
    • 4. PROJECT OVERVIEW Background  Objectives  Literature review  Ultra low head(ULH) turbine : Introduction  Operation principle  Methodology  Work accomplished  Problem faced  Conclusion 
    • 5. BACKGROUND Introduction Hydropower Problems Nepal is known to be top nation of the world in terms of water resources. Solutions More than 6000 flowing rivers. Yet Energy Crisis
    • 6. CONTD… Introdution Insufficient no. of hydropower Problems Solutions Topographicsal condition(mostly in hilly) Few in Terai High cost of installation of big hydropower
    • 7. BACKGROUND Introdution Problems Solutions Increase in number of hydro powers Proper distribution of hydro powers Micro hydropower and ultralow head hydropowers
    • 8. OBJECTIVES Design and the installations arrangement of the ultra-low head turbine Findings regarding the aesthetics of the ultra-low head turbine, its’ reliability, functionality and selection of sites and further proceedings. Investigate the existing hydropower and identify core issues for very low head hydropower
    • 9. LITERATURE REVIEW OF NEPAL PELTON 24% KAPLAN 7% 0% PELTON FRANSIS 16% 69% 0% Turbine type distribution in major hydro powers constructed KAPLAN 26% FRANSIS 58% Turbine type distribution in hydro powers under construction The status of type of hydropower turbine distribution
    • 10. For more info . . . List location or contact for specification (or other related documents)
    • 11. Ultra low-head turbine Head : 1m to 5 m Applicable in even natural or man-made rivers and canals with little or no water storage capacity Static pressure difference principle
    • 12. OPERATIONAL PRINCIPLE Static pressure difference principle Fig: static pressure difference in ultra low head turbine
    • 13. CONTD … Different form conventional approach Geometrically similar to middleshot waterweel • Difference lies in principle . Velocity driven and pressure difference driven Velocity incensement unlink conventional
    • 14. CONTD..  Force due to pressure difference Counteracting force due to accleration
    • 16. WORKS ACCOMPLISHED I. Visited to Rossi khola canal:  Rectangular with uniform cross section   Discharge calculation:        width 201.5 cm and depth 130.5 cm Floatation method Total distance travelled= 630.5cm = 6.305m Average time taken = 11.223 sec Surface velocity, Vsurface= 0.5618 m/sec Mean velocity= k*vsurface =0.74 * 0.5618= 0.4157m/sec Discharge obtained, Q=A * Vmean =1.093 m^3 /sec Discharge suitable for ultra low head turbine
    • 17. CONTD. II. First Model Preparation:  Model overview:    Cylindrical Made up of wooden plank and tin Model specification:       Diameter of the faces= 24.5cm Length of the blades= 38cm Height of cylinder= 38cm (with faces of thickness 1cm each) Width of each blade= 3cm Acute angle made by a blade with the face is given by, Sinβ= (36/38) => β= 70º (approx.) *(The model is just to understand the “static pressure difference principle”)
    • 18. CONTD..  Testing of the model o o o o Tested in Rossi Khola canal Speed of 20 rpm in anticlockwise direction. Not according to our operating principle. Reason for this deviation.
    • 19. CONTD… 
    • 20. CONTD.... 
    • 21. CONTD…..  Testing of the model  To be tested in canal nearby Fluid Mechanics laboratory  Design of the model and assembly  Bearing and labyrinth used
    • 22.  Fig: Design of the turbine and its assembly
    • 23. Fig : Isometric view of the turbine (vertical) Fig : Front view of the turbine
    • 24. Fig : Isometric view of the turbine (inclined)
    • 25.   Totally new concept resulting in very few reference material Problem in understanding the operating principle; failure of our first model as per operating principle proves this
    • 26. EXPECTED WORK SCHEDULE S.N Activity September October 1. Literature review 2. Proposal Submission and proposal defence 3. Site visit status analysis of Hydropower Progress report midterm presentation and 5. Site selection preliminary work design and for 6. Final Presentation November December Janaury
    • 27. ACTUAL WORK SCHEDULE S.N Activity September October 1. Literature review 2. Proposal Submission and proposal defence 3. Study of lawn blades and site visit Model Preparation 5. Progress report midterm presentation 6. Testing of the model and design and new model preparation 7. Final Presentation and November December Janaury
    • 28. CONCLUSION   Ultra-low head turbine works could be the icing on the cake Hope to continue in this path for the detail design and simulation of this ultra-low head turbine for economic and reliable hydro energy prospects
    • 29. THANK YOU