1. Final Design Presentation
Offshore Ocean Hydro Storage System
Group 8 – Humpback Hydro
Shariq Codabux, Mitchell Lamoureux, David Martens, Billy Su

2. Design Description
•
We were given Humpback
Hydro’s patented concept for
an offshore hydro energy
storage system.
•
We were asked to show the
proof of concept, CAD/CFD
modelling, and technical
feasibility.
Humpback Hydro How it Works [Schematic] Retrieved From
Unpublished Powerpoint, Humpback Hydro Inc

3. Scope and Specification
Objective/Requirement Specifications
Calculate Expected Efficiency & Computer
Program
Estimate expected efficiency of system based off
sketches provided by Humpback Hydro
Based of a head range of 15-70 meters for each
turbine, calculate the system efficiency
Create a computer program to aid with sizing
turbomachinery, reservoir sizes, penstock sizes, and
concrete amount.
User will specify desired power output and
storage time and the program will output the
most efficient/cost effective option
Design Gravity Dam
Preliminary analysis on gravity dam design to
estimate the amount of concrete required for the
structure
Dam must be stable enough to have a factor of
safety against sliding of 1.5 and withstand
compressive stresses with a safety factor 3
Power Generator and Transformer Selection
Select generator to work with the turbine Specify a generator based on the turbine RPM
range of 1000 to 2000 RPM, 1-10 MW Power
Output, and determine rated voltage and
frequency
Select transformer for power
transmission/distribution
Specify a transformer based on the generator
power output (10 MW), and frequency (50 or 60
Hz)
CAD & CFD Modelling
Create a 3D CAD model of the Hydro system A 3D Model of the system will be developed using
Autodesk Inventor
Create a flow simulation to show the operation of the
system
Simulation of invention will be completed using
Autodesk software

4. Design Alternative 1

6. Selection of Generator and Transformer
TMEIC 4 Pole Generator HPS Dry-Type Power Transformer
Rated Output 10000-50000kVA Three Phase Input 500-15000kVA
Rated Voltages 6.6 ,11 or 13.8 kV Primary Voltage 35kV or less
Frequency 50Hz or 60Hz Frequency 60Hz
Poles 4 Output Efficiency 99.48%
Rated Speed 1500 or 1800min-1
Rated Power Factor 80%-90% lagging
• Specify a generator and transformer set based on the
turbine RPM range of 1000 to 2000 RPM, 1-10 MW Power
Output, and determine rated voltage and frequency
Information Adapted from 4-Pole Turbine Generator Retrieved From
http://www.tmeic.com/Repository/Others/4P%20TG.pdf TMEIC, Inc
Information Adapted from Dry-Type Medium Voltage Distribution
Trasnformer Retrieved from Catalog, Hammond Power Systems

7. Gravity Dam Design Against
Sliding and Stresses
Height
(m)
β
(deg)
G
(MN/m)
W
(MN/m)
U
(MN/m)
30 21 4.15 2.01 0.29
35 23 6.24 3.15 0.47
40 24 8.55 4.53 0.67
45 25 11.33 6.17 0.92
50 26 14.63 8.06 1.23
55 27 18.50 10.20 1.59
Height
(m)
σ,1
(MN/m2)
σ,2
(MN/m2)
S.F.
(sliding)
S.F.
(compression)
30 0.607 0.062 3.13 37.86
35 0.713 0.064 2.43 32.26
40 0.857 0.027 2.00 26.83
45 0.981 0.011 1.79 23.46
50 1.084 0.016 1.67 21.22
55 1.168 0.038 1.60 19.68
Safety Factor (S.F.) against sliding must be
greater than 1.5, compressive S.F. must
greater than 3, no tensile stresses

8. System Energy Calculations using
Fundamentals of Fluid Dynamics and
Turbomachinery
•
Complete analysis procedure will be outlined in the Final Design Report

9. Efficiency Vs. Lower Turbine Head
Best Efficiency Point
70.2%

10. Graphical User Interface using MATLAB
1.User enters these
inputs
3. The program calculates
these values
2. Press this button
to calculate parameters

11. Final System Outputs
Parameter Value
Lower Turbine Power Output 2.86 MW
Lower Turbine Head 20 m
Lower Turbine Flow Rate 15.7 /s
Lower Penstock Diameter 1.6 m
Lower Reservoir Volume 170,000
Upper Turbine Power Output 7.14 MW
Upper Turbine Head 50 m
Upper Turbine Flow Rate 15.5 /s
Upper Penstock Diameter 1.6 m
Upper Reservoir Volume 170,000
Pump Flow Rates 7.9 /s
Pump Power 7.12 MW
Total Amount of Concrete 220,000
Total System Efficiency 70.2%
Parameter Value
Lower Turbine Power Output 2.86 MW
Lower Turbine Head 20 m
Lower Turbine Flow Rate
Lower Penstock Diameter 1.6 m
Lower Reservoir Volume
Upper Turbine Power Output 7.14 MW
Upper Turbine Head 50 m
Upper Turbine Flow Rate
Upper Penstock Diameter 1.6 m
Upper Reservoir Volume
Pump Flow Rates
Pump Power 7.12 MW
Total Amount of Concrete
Total System Efficiency 70.2%
Inputs
•
Power Output:
Ø
10 MW
•
Storage Time:
Ø
3 Hours
•
Low Demand:
Ø
6 Hours

13. Deliverables
•
A 10 MW facility can achieve approximately 70.2%
efficiency and would require 220,000 cubic meters of
concrete
•
Power transmission equipment including a Generator
and Transformer has been specified
•
A Graphical User Interface has been developed to aid
with sizing of these facilities
•
A CAD model and flow simulation has been completed
to show the operation of the system

14. Questions?