Level Design Documents
Now that P16420 knows exactly what its tasked with,
it proceeds to solidify the idea of how the solution
system will look like
Team Vision for System-Level Design Phase
- During the Systems Design phase of our project, we
planned to have a complete systems level solution to our
project. We also planned to begin testing the product
that our system will be producing to aid in the
feasibility of our solutions. Lastly, we planned to
identify the subject matter experts related to our
- While we were able to accomplish many things in this
phase, the best final solution is still changing and has
not yet been fully identified. We were able to generate
many concepts, but had difficulty in comparing them
without more testing data. For this reason, we have yet
to determine the best solution. With more testing, we are
confident that a solution will be identified. We were
able conduct product tests on the material, which gave us
a better understanding on what our solution must be
compatible with. It is our plan for the next phase to
find the best combination of subsystems and begin to work
to integrate them into one system.
Hybrid Design B
How long will it take to fill up the entire
tray of lip balm/hand salve containers
- Hand Salve Volume: 1.85 oz
- Lip Balm Volume: 0.2 oz
- Commercially available wax melting/pouring
machine maximum: 1 gallon/min = 2.13 oz/sec
- System will be able to melt at 20% of
commercial maximum = .426 oz/sec
- Setup for each dispensing = 10 sec
Total Volume Needed:
- 250 Lip Balm containers: 50 oz
- 50 Hand Salve containers: 92.5 oz
- Lip Balm: 43 minutes
- Hand Salve: 11.95 minutes
- Dispensing time is a large source of time and
opportunity to quicken process is possible
What is the maximum allowable temperature the
students should have access to?
Answered via benchmarking.
- According to ASTM standards, 120°F after
contact for 5+mins would cause 1st-2nd degree
- Allowing for fluctuations in surface
temperature, and taking into consideration the
age of students, a 15% error is applied.
- 120°F x (0.85) = 102°F
- According to pamphlet by American Burn
Association, 100°F is allowable temperature for
bathing children of all ages.
- Max allowable accessible temp is 100°F,
anything between 100°F and 120°F should
have a barrier and a visible warning, anything
above 120°F should not be accessible by
Is a Hot Fudge dispenser a viable
- Device operates on Double-boiler principle
(Impossible to burn or scald product).
- Max Temp 210°F, adjustable via knob with
accuracy of 5°F.
- Device is insulated, no safety concerns.
- Portion pump dispenses same amount each time
(approx. 1 oz, adjustable with 1/8 oz increments).
- Hot wax/oil maintains consistency and
temperature during dispensing.
- Hot Wax container can hold approx. 102 oz of
Total Volume Needed:
- 250 Lip Balm containers: 50 oz.
- 50 hand salve containers: 92.5 oz.
- Hot Fudge dispenser can easily dispense two
batches of lip balm containers (2% leftover) or one
batch of hand salve (9.3% leftover).
How can we make sure our system does not
- What does it mean for a system to clog?
- If the heated and mixed ingredient does not
flow out freely out of whatever it is we are
dispensing from, we can say that the system has
- How did the last team fail in terms of
- They focused on this idea of bringing the
heated and mixed ingredient to the packaging
station where they can dispense the material
through a tube and into the containers. It was
a good idea, but failed to think of the tube in
which the ingredients flow out from.
Ingredients ended up staying in the tube and
clogging it. The users had to change out the
tube or clean it (which is hard to do) to use
- What were the engineering requirements related
to this issue, and how can we improve upon it?
- So basically, this hasn’t been
discussed in our previous team’s
engineering requirements, but I think we should
work on decreasing the surface area that comes
in contact with the heated ingredients
- This means that we should work on
shortening the path taken by the heated
ingredient from the heating vessel to the
packaging as much as possible. Best case
scenario will be, according to my argument,
direct dispensing from heating vessel to the
container - No intermediate steps. Physically
making it impossible to clog.
How can the hot-plate / soup-pot solution
that P15420 started become one of our feasible
Best answered via: Prototyping
- Product material is consistent.
- Hotplate set to 160F.
- Actual material temp 150F < X < 170F.
- Soup pot dimensions same as P15420’s.
- Hot-plate Specs same as P15420’s.
Tools to Solve the Problem:
- Fix dispensing process:
- Keep Material from cooling
- Conductive Material
- 2nd Heat Source
- Decrease channel dispense length
- Increase Dispense velocity
- Increase the channel dispense diameter
- Increase dispense pressure
- Lower dispenser position
- Manually pump material out of
- Add an actual dispenser
- Drill, thread, install, and MIG weld a
- It’s probably feasible with the tools
Design Review Materials
Plans for next phase
Home | Planning &
Problem Definition |
Systems Design | Subsystem Design | Preliminary
Detailed Design | Detailed Design
Build & Test
Prep | Subsystem Build
& Test | Integrated
System Build & Test |
Integrated System Build & Test with Customer Demo
Customer Handoff & Final Project Documentation