Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Revamped 1st hardware iteration to include mock test setup made out of acrylic
Acquired heat gun to simulate heated airflow
Performed basic tests of surface, including tests of new IR temperature detector
Ready to begin 2nd hardware iteration, and implement control based on temperature feedback
Accomplishments from Previous Week
Updated 1st hardware iteration, including completed CAD and additional hardware acquisition (acrylic, 8020 framing material, etc.)
Divided tasks for upcoming proof of concept presentation
identified issues with current strategy (cold air heat exchanger insufficient, will try dry ice next)
Assignments for Coming Week
Jayant Mathur
Arduino programming for data acquisition and control of temperature
Assist with fabricating hardware setup (including mock test environment)
Nate Goldberg
Continue CFD analyses and relevant modeling
Process data to inform others of optimal design choices (shape/profile of surfaces, materials used, etc.)
Kristen Matsuno
Continue calculations for fluid effects to ensure that Chill Puck is viable
Assemble hardware iteration and work on CAD
Nathaniel Liu
Order and retrieve next set of hardware purchases
Continue CAD of hardware iteration as well as assembly of simulated test environment.
Sponsor Feedback and Corresponding Action Items
Sponsor has provided updated schematics for existing hardware setup. Will design our version to match closely.
Awaiting sponsor shipment of test substrates (silicon coupons), but with dimensions known we can continue to model our hardware iteration to the best of our ability.
Instructor Feedback and Corresponding Action Items
Professor Tustaniwskyj cautioned us about condensation a while ago, and the use of cold air from an AC unit has since been ruled out due to the moisture content.
Based upon Prof. T's feedback about air delivery, the fluid nozzle/housing has been redesigned.
Comments from Other Students
For the upcoming presentation, we will speak more slowly and in more basic terms (based on previous student feedback)
Risks and Areas of Concern
Accuracy and time lag of thermal measurements may become an issue if control loops are not able to handle the properties of the system.
Dry ice delivery is untested and may not work as well as hoped.
Resources or Information Required but not Available
Awaiting arrival of silicon coupon test substrates.
Also awaiting sponsor information about an in-person visit date.
Schedule
Monday 5/1 - 10:00 am Team meeting
3:00 pm Proof of Concept Presentation!
4:00 pm If necessary, additional team meeting.
Wednesday 5/3 - 2:00 pm Phone call with sponsor contact (Jeremy)
5:00 pm Team meeting (revamp 3D printed parts)
Friday 5/5 - Complete second hardware iteration.
Budget
$35 Spent on Risk Reduction (Winter 2017)
$11.37 Adafruit Trinket
$19.31 Adafruit Thermocouple Amplifier
$8.12 Battery "backpack" add-on
$16.99 Ofeely 3.7V 3000mAh LiPo Battery
$11.99 Halnziye High Performance Thermal Grease
$11.98 Arctic Silver Cooling Adhesive
$8.44 ThermalCoolFlux Thermal Paste
$12.99 Ultronix ThermoSensor
$13.27 Adafruit Infrared Thermo-sensor.
~$1000.00 Remaining Budget for Equipment and Parts (approximate estimate, pending quote for Adafruit supplies)
Progress on Report and Webpage
Added "Applicable Standards" portion of the final report, and included a significant subsection concerning safety standards for handling of pressure vessels and dry ice.
Webpage progress reports and Gantt chart updated accordingly.