1. Mobile Environment Chamber End of Term Progress Report Team members: Tuan Ngo ( presenter 1) Giang Nguyen (presenter 2) Duc Tran Peter Elabd Thien Nguyen The Duong Advisor: Dr. Mark Weislogel

3. Chamber PC Controller Facility Actuator Solid State Drives Set T Basic requirements Temp. range: -5 o C to 105 o C Accuracy: ± 2 o C Temp. uniformity: ± 4 o C throughout the chamber Transient:10 o C /minute Airflow: 0.5 m/s minimum across DUT Versatile A chamber that provide temperature controlled air to SSDs while SSDs are powered on and functionally tested

4. Problem Identification Requirements External search Concept Generation Concept Evaluation and Selection Detailed Design We are here Proposal PDS

5. Summary of external/ internal search and final concept selection

6. External / Internal Search Layout design Sub-component selection

7.  Layout Design  Sub-component Selection Technical issues to address: Heating/cooling method Temperature uniformity Air flow requirement Water condensation

8. Electrical Components  Layout Design  Sub-component Selection Controller Chiller Heater/ heat exchanger Fan Insulators

9. Fundamental Design PROSCONS CompactTemperature uniformity Counter-flow air movementCondensation risk Capacity

10. Low Risk Design PROSCONS Thermal UniformityMobility Condensation PreventionManufacturability Cost

11. Improved Design PROSCONS Temperature uniformityMobility Condensation prevention Counter-flow air movement

12. Concept scoring matrix Weight Fundamental designLow-Risk designImproved design Cost 3 9912 Performance 5 Temperature uniformity 2 448 Condensation prevention 1 254 Capacity 2 488 Mobility 2 1066 Total10293238

14. Chamber as part of testing system

15. Main components Controller: Watlow PM3 digital PID controller -Recommended by Intel. -Optimized for thermal control

16. Main components Valve: - Regulating flow: Globe valve - Electric control valve

17. Main components Heating element: Strip heater -Less space required -Low cost

18. Main components Sensor: Resistance Temperature Detector (RTD) -Fast response time -Reliable -Accurate

19. Main components Fan: - Flow rate at least 0.5 m/s across SSDs -Higher flow rate, higher thermal uniformity but higher cost. -Must sustain Temp. up to 105 o C

20. Main components Heat exchanger: Cooling coil Need analysis on: - Material - Dimensions: length, wall thickness - Fins or no fins

21. Main components Insulation: Preferred characteristics: -High thermal resistivity. -Low cost. -Light weight. -Safe: fire-proof.

22.  More analysis and research required.  Any decisions now could be changed based on further analysis and updated PDS.  Biggest potential risk: availability of parts.  Next step: start parametric design in Spring term.