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
4. 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
5. PROJECT OVERVIEW
Background
Objectives
Literature review
Ultra low head(ULH) turbine : Introduction
Operation principle
Methodology
Work accomplished
Problem faced
Conclusion
9. 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
10. 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
11. For more info . . .
List location or contact for specification (or other related documents)
12. 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
14. CONTD …
Different form
conventional approach
Geometrically similar to
middleshot waterweel
• Difference lies in principle .
Velocity driven and pressure
difference driven
Velocity incensement
unlink conventional
15. CONTD..
Force due to pressure difference
Counteracting force due to accleration
17. 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
18. 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”)
19. 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.
22. CONTD…..
Testing of the model
To
be tested in canal nearby Fluid Mechanics
laboratory
Design of the model and assembly
Bearing and labyrinth used
26.
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
27. 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
28. 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
29. 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