1. 6/1/2011 Team members: Duc Tran Tuan Ngo Giang Nguyen Peter Elabd Thien Nguyen The Duong Advisor:Dr. Mark Weislogel Capstone 2011 Mobile Environment Chamber

2. Introduction Basic requirements Design and manufacturing Validation Proposals Conclusion

3. A chamber that provides temperature controlled air to Solid State Drives (SSDs) while they are powered on and functionally tested.

4. Chamber PC Controller Facility Chiller Actuator Solid State Drives Set T Temp. range: -5 o C to 65 o C Accuracy: ± 2 o C Temp. uniformity: ± 4 o C Transient:10 o C /minute Airflow: ≥0.5 m/s Capacity: 4-12 SSDs /chamber Mobility Mobile temp. control system

5. Concept selection PROSCONS Temperature uniformitySpace constraint Condensation preventionNumber of SSDs Counter-flow air movement Manufacturing

6. Detailed Temperature Control System

7. Mechanical Model

8. Electrical System RTD Alarm Valve Power Converter AC Power PC GUI Gateway/ Controller Control Board Heaters Fans

9. Software GUI Intel® Modbus Service Modbus TCP/IP Profile loading Data logging Written in C# Data Package Processing Written in Python Industrial standard Communication over TCP/IP network

10. Final Chamber

11. Final System

13. Temperature Uniformity Test results: Mean temp. difference: 0.64 o C Standard deviation: 0.39 o C Max: 1.6 o C Min: 0 o C Requirement: Temperature difference: within ± 4 o C

14. Stability Requirements: Maximum range: ± 2 o C from set point) Maximum range: ± 1.6 o C Extreme Max TempExtreme Min Temp

15. Ramp rate (transient) System: Average Ramp up: 17.5 o C/minute Average Ramp down: 10.7 o C/minute Requirement: Ramp rate : 10 o C/minute (up and down)

16. Other Results & Requirements CriteriaChamberRequirements Mobility Weight/Density Ratio (lb/in) 20.6275 Dimensions (in)19x5x5 19" Form FactorYes CapacityNumber of SSD's64-12 Airflow Max (m/s)14.6NA Min (m/s)1.350.5

17.  Use heater with fins  Proportional valve  Proportional controller  Manufacturing process: Stamping  Capacity: larger chamber 19”x10”x10”

18. Requirements have been achieved: Budget Mobility Mechanical Aspect Electrical Aspect Academic Achievement: Technical Design Process Teamwork Project Management Financial Management