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Smoking Machine W15 DDR Review. By: Chris Boise Eric Cawley Matt Cross Megan Guarnieri -Cleary Jose Paredes Gideon Oladunjoye. Agenda. Model Update Chimney Movement Actuator Precision Cart Selection Tubing Selection Particle Deposition Computer Update VI Modification

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smoking machine w15 ddr review

Smoking Machine W15 DDR Review

By:

Chris Boise

Eric Cawley

Matt Cross

Megan Guarnieri-Cleary

Jose Paredes

Gideon Oladunjoye

Team 14054

agenda
Agenda
  • Model Update
  • Chimney Movement
  • Actuator Precision
  • Cart Selection
  • Tubing Selection
  • Particle Deposition
  • Computer Update
  • VI Modification
  • Pump Comparison
  • Pump Characteristics
  • EcoFlo
  • Mainstream Feedback Loop
  • Ventilation
  • Impinger
  • IR Sensors
  • Electrical System Schematic
  • Dual H-Bridge
  • Thermocouple Conditioning
  • Ignition Coil
  • Lighting Fixture
  • Industry Comparison
  • BOM
  • Risk Assessment
  • Test Plan
  • MSD II Review
  • Follow Up Team
  • Schedule
  • Remaining Items

Team 14054

model update

Model Update

Incorporation of electronic cigarettes

3 modular design components

Lung Cast

Cambridge Filter

2ndImpinger

Team 14054

chimney impinger movement

Chimney/impinger Movement

10” stroke mini track actuator

Mounting bracket and clamps required

Team 14054

actuator precision

Actuator Precision

2 actuators in design

Controlled by rotating a power screw

Built in limit switches (hard)

1” - 2” per second

Reverse polarity for travel direction

0” - .250” stopping range

Limit - time increment of LabVIEW

Delay time of about 4 seconds

Team 14054

cart selection

Cart Selection

Rubbermaid: RCP4520-88BEI

$159.96

L= 36” W= 24” H= 33” Distance Between shelves= 28”

Max weight- 500lb

Team 14054

tubing selection

Tubing Selection

Best tubing choice?

All tubing is 3/8 OD, 1/4 ID

Team 14054

particle deposition
Particle Deposition
  • Sedimentation
    • Particles settle due to gravity
  • Diffusion
    • Deposition due to random particle movement
  • Impaction
    • Deposition due to particle collisions with walls or objects
  • Neglected impaction
    • Straight tubing

Team 14054

slide9

Particle Deposition

  • Assumptions
    • Incompressible flow
    • Sea level with standard atmosphere
    • Continuous fluid
    • Particles are modeled as spheres
    • Constant and uniform velocity
    • 2-dimensional analysis
    • Ideal flow
    • Constant properties

Team 14054

particle deposition7
Particle Deposition
  • Sedimentation
    • When ε = 0.01
      • 2 % of particles have settled
    • Between 0-1µm
      • Highest ε = 0.009
  • Negligible deposition due to sedimentation
  • Diffusion
    • When Δ = 0.0001
      • 2 % of particles have settled
    • Our results are all below 4.0E-5
  • Negligible deposition due to diffusion

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computer

Computer

Computer Found by ME department

Well Suited to run latest version of LabVIEW

Windows 7, 256 MB RAM, 382 MB of disk space

FREE!!!

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vi modification

VI Modification

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vi modification1

VI Modification

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vi modification2

VI Modification

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vi modification3

VI Modification

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piston vs worm screw pump
Piston Vs. Worm Screw Pump
  • ISO standard.
  • Servo controlled.
  • Creates a smoother puffing profile.
  • Sinusoidal puffing profile with constant motor speed.
  • DC step motor controlled.
  • Theoretically more accurate puffing profile.
  • Steady state puffing profile with constant motor speed.
cost of servo motors
Cost of Servo Motors
  • “A typical Techno servo gantry system sells for about $2,700 more than a stepper system.”
  • “[servo motors] tend to be10% to 30% more expensive than similar stepper systems. Brushless servo motor systems tend to be 50% to 100% more.”

http://www.techno-isel.com/Tic/H834/PDF/H834P041.pdf

Browsing online cost range: $250-$5,000.

slide26
Pump
  • Talked with Dr. Kempski
    • Devised a simple test to determine Restricting Parameters for dynamic response
    • A measured mass simulates required force to move syringe
    • Used to determine time constant response

Team 14054

slide27
Pump
  • Sum of forces
  • Standard form
  • Vss ; Impedance
  • Time Constant

Team 14054

slide28
Pump
  • Vss found to be 0.00559 m/s
  • Measured distance off syringe
  • Time constant Eqn.
  • F – Fsystem is the same as ‘mg’ from the test
  • ‘m’ measured to be 0.4137 kg

Team 14054

slide29
Pump
  • Time constant Eqn.
  • Evaluating through, need to estimate carriage weight ‘m’
    • Estimated 0.3 kg
  • Time constant is 0.000413 sec
  • Under worst case of m=1 kg, τ = 0.00137 sec

Team 14054

slide30
Pump
  • Pump specs (NE OEM 570)
    • Able to reach 45 mL/s
    • Valid for normal cigarettes
    • Matched sent flow rates
      • Unable to test dynamic response (time too reach) flow rates
  • Looking at E-cig’s
    • Need to reach ~120 mL/s
    • Pump DOES NOT MEET REQUIREMENT

Team 14054

resolution of ne 570 syringe pump
Resolution of NE-570 Syringe Pump
  • Syringe sizes: Up to 60 cc, 140 mL partially filled
  • Motor steps per revolution: 200
  • Microstepping: 1/8 to 1 depending on motor speed
  • Motor to drive screw ratio: 60/15
  • Drive screw pitch: 16 rev/in
  • Advance per step: 3.96875 μm to 31.75 μm depending on motor speed
  • Syringe diameter: ~37.5 mm

Volume per step: (31.75 μm)[1/1000 mm/μm]*pi*((37.5 mm)/2)^2

= 35.07 μL/step = 0.03507 mL/step

ecoflo
EcoFlo
  • Machines have Wifi and Bluetooth to connect to
  • Machines can not replace sidestream centrifugal pumps because the flow rate is too high
  • EcoFlo
    • 5 – 100 CFM in 1 CFM increments
  • Replace side stream pump
    • Only need 3 L/min = 0.1 CFM
    • Machine is too large to replace
    • Syringe & centrifugal pump exhale into unit
  • Machines can easily be used for ventilation
hose layout
Hose Layout

Team 14054

home screen
Home Screen

Team 14054

blower status screen
Blower Status Screen

Note: EcoFlo has 2 blowers. This means that it can draw more air than it is supplying causing a negative pressure chamber. This way smoke does not leak out of chamber.

sidestream flow control
Sidestream Flow Control

Centrifugal pump controlled by flowmeter to 3 L/min.

Key Instruments FR4A40BVBN ($95):

  • Range: 0.4-5 L/min
  • Accuracy: ±3% of Full Scale = ±0.15 L/min

Smaller model available with ±0.25 L/min accuracy. ($75)

http://www.keyinstruments.com/standard-products/variable-area-flow-meters/4

flo-rite-series-fr-acrylic-body-flowmeters

mainstream flow feedback loop
Mainstream Flow Feedback Loop

Using: P*V = n*R*T

Assuming: ṁ1 = ṁ2

Q1 = Q2*[P2*T1/(P1*T2)]

improving ventilation

Improving ventilation

Vent: Current State

Leaks

Removal of all smoke

Running during testing

Team 14054

improving ventilation1

Improving ventilation

Vent: Proposed-

Run pump exhaust tubing into the Eco-flo system

Eco-flo system will be operation during testing

Access doors

Team 14054

improving ventilation2

Improving ventilation

Cage: Current State-

Lock in design between extruded aluminum and plastic with silicon sealant

No Gaskets

Not Removable

Team 14054

improving ventilation3

Improving ventilation

Cage: Proposed-

Same lock in design

Use foam gaskets

Removable cage

Team 14054

impinger
Impinger
  • Impiger most likely filled with methanol for all tests
  • Impinger may be surrounded by dry ice or liquid nitrogen to motivate particles to condense
  • Cooling the impinger is not needed for vapor phase, e-cigs.
  • Other cigarette studies have inserted “a small plug of quartz wool and soda lime glass balls filled to a depth of approximately 6cm. The impingers are held in a polystyrene box filled with sufficient dry-ice to cover the main body of the impinger.”
  • Notable design challenge:
    • If a liquid nitrogen bath is needed then a sufficient bath container will be needed
ir sensor experiments
IR Sensor Experiments
  • Failed to get past IR sensors to work.
  • Talked with multiple professors with no luck.

Question for customer:

  • Would you like to buy new IR sensors for the automatic termination of the cigarette at its butt or terminate the cigarette after a set number of puffs?
  • Past IR sensors were bought for $175 but we would recommend researching more robust IR sensors.

http://www.eaton.com/Eaton/ProductsServices/Electrical/ProductsandServices/AutomationandControl/SensorsLimitSwitches/PhotoelectricSensors/index.htm

dual h bridge motor driver
Dual H-Bridge Motor Driver
  • Eliminates delay present in previous design.
  • Provides direction controls
  • 1 driver for 2 actuators as oppose to 4 relays for 2 actuators.

Team 14054

dual h bridge motor driver1
Dual H-Bridge Motor Driver
  • Specifications
  • Capable of driving 2 motors
  • Delivering 2 amps per motor
  • 12 volts
  • Uses the L298n driver

Team 14054

thermocouple conditioning
Thermocouple Conditioning
  • Circuit specifications
  • Reference Temperature Compensation(using the ADT7320)
  • High Gain instrumentation amplifier(gain of 100)

Team 14054

coil warm up
Coil Warm Up

Team 14054

coil cool down
Coil Cool Down

Team 14054

lighting fixture1
Lighting fixture

4

5

3

2

1

Team 14054

lighting fixture2
Lighting fixture

Components

  • 1: Sliding base
    • Using existing piece from previous project
  • 2: Acrylic Shim
    • Electrically separates components 1 & 4 from 3
    • Need to machine
  • 3: Aluminum Stand/Riser
    • Supports the from of the lighting coil
    • Connected to positive lead
    • Need to machine
  • 4: Steel Body
    • Cutting down a piece from the original unit
    • Connected to negative lead
  • 5: Lighting Coil

Team 14054

bom update

BOM Update

Team 14054

bom update1

BOM Update

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bom update2

BOM Update

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bom update3

BOM Update

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bom update4

BOM Update

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bom update5

BOM Update

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bom update6

BOM Update

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bom update7

BOM Update

Total Unit Cost- $5,959.42

Does not include data sensors $14,387.50

Cost for this project- $1,371.96

2ndimpinger, Rubbermaid cart

Team is over the $1,000.00 budget!

Team 14054

risk assessment
Risk assessment

Team 14054

risk assessment1
Risk assessment

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risk assessment2
Risk assessment

Team 14054

team contributions for msd ii
Team Contributions for MSD II
  • Chris-
    • Purchase all required items
    • Cage construction
    • Execute test plan to ensure all engineering requirements are meet
  • Eric-
    • Program pump
    • Pump to LabVIEW interface
    • Cage construction
  • Megan-
    • Ecoflo setup and manipulation
    • Lung Cast Bracket
    • LabVIEW feedback loops
  • Matt-
    • Supervising risk assessment document
    • Ecoflo setup and manipulation
    • Centrifugal pump & side stream construction
  • Jose-
    • LabVIEWprograming and troubleshooting
    • Programing actuator movements
    • Lung Cast Bracket
  • Gideon-
    • Test each components for functionality
      • H-Bridge motor drivers
      • Design thermocouples conditioning circuitry
      • Valves and relays
      • Wire Organization

Team 14054

follow up team

Follow-up team

Yes a follow-up team/CO-OP is needed.

What they will be focused on-

Manuals for-

Test procedures

Data collection

Maintenance/cleaning schedules

Operation/work instructions

LabVIEW optimization

Patent Research for reverse engineering for reproducibility

Humidification of the mouth/lung casting

Team should consist of - 2 ME & 1 ISE

Team 14054

schedule msd ii

Schedule MSD II

Team 14054

open items

Open items

Mounting bracket for main stream impinger, lung cast, or pelt filters

LabVIEW feedback loops

Purchasing all remaining components

Integration of Mainstream and Sidestream units

Team 14054

summary
SUMMARY
  • Model Update
  • Chimney Movement
  • Actuator Precision
  • Cart Selection
  • Tubing Selection
  • Particle Deposition
  • Computer Update
  • VI Modification
  • Pump Comparison
  • Pump Characteristics
  • EcoFlo
  • Mainstream Feedback Loop
  • Ventilation
  • Impinger
  • IR Sensors
  • Electrical System Schematic
  • Dual H-Bridge
  • Thermocouple Conditioning
  • Ignition Coil
  • Lighting Fixture
  • Industry Comparison
  • BOM
  • Risk Assessment
  • Test Plan
  • MSD II Review
  • Follow Up Team
  • Schedule
  • Remaining Items

Team 14054

questions
QUESTIONS

Team 14054