College CMET (Civil and Mechanical Engineering Technology) group class project. Incorporates mechanical design and thermodynamics into a real world application.
2. Introduction
● The project our group chose for this
term consisted of a water turbine in
order to incorporate the requirements
of both Thermodynamics and
mechanical Design classes.
● This project will demonstrate three
dimensional movement and transfer
of energy from kinetic to mechanical.
Credit: hydrover.co.uk
3. Outline
● Introduction
● Executive Summary
● Sketches
○ Gus
○ Andrew
○ Chris
○ Final
● Concept Process
● CAD
● Prototypes
● Final Product
● Motion Analysis
● Force Analysis
● Thermodynamics Analysis
Credit: directindustry.com
4. Executive Sum(of forces)mary
Moving water has the potential to do work. We will use that principle to take running water and turn
an impeller, which in turn will run an electric motor through a set of gears to power an LED. Our source of
water will be a pressurized water hose connection.
credit: Mapio.netcredit: Watter Buddy
5. Sketch / Concept: Gus
● Pros
○ Covered the concepts required for machine
design and thermo
○ Construction challenge
○ Basic materials availability
● Cons
○ Too large for transportation
○ Variable flow rate water source
6. Sketch / Concept: Andrew
● Pros
○ Easy to build given laser-cut and 3D-
printed parts
○ Uses gravity-fed water input
● Cons
○ Water flow rate would be inconsistent
○ Uses gravity-fed water input
7. Sketch / Concept: Chris
● Pros
○ It satisfies the project guidelines given to us.
○ It turns mechanical energy into electrical
energy, which is cool.
○ The design could be very compact.
● Cons
○ Need to find or design a shredder
8. Sketch / Concept FINAL
● Simplified combination of all ideas
● Availability of mechanisms
● Availability of materials
● Simplicity
9. Sketch / Concept FINAL
Challenges
● Pelton Wheel
● Shaft design / fabrication
● Gears
● Consistent water source
● 3D Material quality
● Friction
10. Sketch / Concept FINAL
Challenges
● Pelton Wheel
● Shaft design / fabrication
● Gears
● Consistent water source
● 3D Material quality
● Friction
11. Concept - Gears
Credit: trinityscsp
Gearless Transmission
● Pros
○ Neat design
● Cons
○ Complicated movement
○ Difficult to align
○ Inefficient to 3D Print
○ Difficult to assemble
12. Credit: unknown
Pinwheel Gear Design
● Pros
○ Simple
○ Nostalgic
● Cons
○ Rough movement
○ Difficult to align
○ Inefficient to 3D Print
Concept - Gears
13. Bevel Gears
● Pros
○ Smooth
○ Easy to 3D Print
○ Consistent
○ Modern fit to our Design
● Cons
○ Difficult to design
Credit: “dea” GrabCAD
Concept - Gears
17. First Prototype
Added:
● Base and foundation
● Initial size of gears “slightly” too large
● Right angle coupler
● Horizontal shaft
● Cut threaded rods to size
28. Thermodynamics Background
In Chapter 2 of the textbook, we learned about mechanical energy. Our micro
hydro generator will capture the energy of water to generate electricity. A turbine
converts the kinetic energy of water into mechanical energy. Then a generator
converts the mechanical energy from the turbine into electrical energy.
Equations:
Qin + Ẇin + ṁ (h + (𝓋2/2) + g*z) = Qout + Ẇout + ṁ (h + (𝓋2/2) +g*z)
Ẇin = ṁ (𝓋2/2)
32. References
Energy Systems. “Watter Buddy.” Home, 15 June 2017, microhydropower.com/our-products/watter-buddy/.
OpenStax. “Physics.” Lumen, Open SUNY Textbooks, courses.lumenlearning.com/physics/chapter/6-1-rotation-angle-and-angular-
velocity/.
“Pump Theory - Eulers Turbomachine Equations.” Nuclear Power, www.nuclear-power.net/nuclear-engineering/fluid-
dynamics/centrifugal-pumps/eulers-turbomachine-equations/.
Editor's Notes
Why we chose this final design.
Turbine was available to use.
Additional materials were immediately available reducing the amount of ordering needed to zero
Challenges
Why we chose this final design.
Turbine was available to use.
Additional materials were immediately available reducing the amount of ordering needed to zero
Challenges
Why we chose this final design.
Turbine was available to use.
Additional materials were immediately available reducing the amount of ordering needed to zero
Challenges
Why we chose this final design.
Turbine was available to use.
Additional materials were immediately available reducing the amount of ordering needed to zero
Challenges
Why we chose this final design.
Turbine was available to use.
Additional materials were immediately available reducing the amount of ordering needed to zero
Challenges
Why we chose this final design.
Turbine was available to use.
Additional materials were immediately available reducing the amount of ordering needed to zero
Challenges
Image of your CAD. Can use a blueprint drawing or a 3D drawing. If any essential dimensions are present included them on the CAD image.
Short description:
What were the CAD design challenges?
Designing the Pelton Wheel was one of the hardest parts on here to design. And it is still not correct
What were the CAD design challenges?
Desiging the Pelton Wheel was one of the hardest parts on here to design. And it is still not correct
What were the CAD design challenges?
Discuss the need for each addition
Discuss the need for each addition
Discuss the need for each addition
Discuss the need for each addition
What does this final model demonstrate (smooth rotation, all gears stay in place, demonstrates machine design components…)
What are the new design challenges that need to be overcome (what changes are needed) before final delivery
Anal-my-sis
Include an image
This slide is what you will show during the question period of the presentation
