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Detailed Design Review. P13651 – MPI Wax Melter. Agenda. Change from design review System Architecture/subsystems Feasibility Test plan Risk assessment BOM MSD II Plan. Refined Project Goal. Revised Project Goal Processes water-soluble waxes, that only come in flake form

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detailed design review

Detailed Design Review

P13651 – MPI Wax Melter

agenda
Agenda
  • Change from design review
  • System Architecture/subsystems
  • Feasibility
  • Test plan
  • Risk assessment
  • BOM
  • MSD II Plan
refined project goal
Refined Project Goal
  • Revised Project Goal
    • Processes water-soluble waxes, that only come in flake form
    • Provide enough wax to keep up with a max reservoir speed of 50 lb/hr
    • Process at most 2 gallons of wax at a time
system architecture
System Architecture

Accept wax

Hold wax

Melt wax

Transport wax

feasibility hopper
Feasibility: Hopper

Hopper > hand-fed solid wax

  • Reduce operator intervention
  • Increase processing speed
  • Better control feed into reactor
wax properties
Wax Properties
  • KC 4088D properties:

Thermal conductivity – 0.685 W/mK

Thermal Diffusivity - 0.360 mm2/s

Specific Heat - 1.908 MJ/m3K

  • Thermal analysis:
    • Porous material model: Wax analogy
      • Ratio of specific heats = 1
      • Thermal Conductivity = .211 W/(m*K)
      • Density = 950 kg/m3
      • Heat capacity = 2.3 J/(kg*K)
    • Liquid material model:
      • Ratio of specific heats = 1
      • Thermal Conductivity = .16 W/(m*K)
      • Density = 860 kg/m3
      • Heat capacity = 2.5 J/(kg*K)
feasibility heat transfer
Feasibility: Heat Transfer
  • Thermal analysis done to determine the temperature of the system during operation

Start-up time: Evaluate the time to reach steady state with solid wax

slide20

1 sec

10 sec

30 sec

60 sec

feasibility transport wax
Feasibility: Transport Wax
  • Linear actuated trapdoor vs. actuated valve
    • Reduce chances of wax solidifying inside the valve
    • Communicates with reservoir
  • Model flow rate out of reservoir: 50 lbs/hour
design question
Design Question
  • Method for attaching blades to the stirrer shaft
  • Are there any concerns with the maximum height of the machine?