Mobile Environment Chamber
End of Term Progress ReportTeam members:
Tuan Ngo (presenter 1)
Giang Nguyen (presenter 2)
Duc TranPeter ElabdThien NguyenThe Duong
Advisor:
Dr. Mark Weislogel
OUTLINE
• Mission
• Project status
• External /Internal Search
• Concept Evaluation and Selection
• Progress on detailed design
• Conclusion
MISSION
Chamber
PC Controller
Facility
Actuator
Solid State Drives
Set TBasic requirements
• Temp. range: -5 oC to 105 oC
• Accuracy: ± 2 oC
• Temp. uniformity: ± 4 oC throughout
the chamber
• Transient:10 oC /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
Problem Identification
Requirements
External search
Concept Generation
Concept Evaluation and Selection
Detailed Design
PROJECT STATUS
We are here
Proposal
PDS
EXTERNAL/ INTERNAL SEARCH
Layout Design Sub-component Selection
Technical issues to address:
• Heating/cooling method
• Temperature uniformity
• Air flow requirement
• Water condensation
EXTERNAL/ INTERNAL SEARCHElectrical Components Layout Design Sub-component Selection
• Controller
• Chiller
• Heater/ heat exchanger
• Fan
• Insulators
CONCEPT SELECTIONFundamental Design
PROS CONS
Compact Temperature uniformity
Counter-flow air movement Condensation risk
Capacity
CONCEPT SELECTIONLow Risk Design
PROS CONS
Thermal Uniformity Mobility
Condensation Prevention Manufacturability
Cost
CONCEPT SELECTIONImproved Design
PROS CONS
Temperature uniformity Mobility
Condensation prevention
Counter-flow air movement
Concept scoring matrixWeight
Fundamental design Low-Risk design Improved design
Cost3
9 9 12
Performance5
Temperature uniformity2 4 4 8
Condensation prevention1 2 5 4
Capacity2 4 8 8
Mobility2
10 6 6
Total 10 29 32 38
CONCEPT SELECTION
Main componentsController: Watlow PM3 digital PID controller - Recommended by Intel.- Optimized for thermal control
Main componentsFan:- Flow rate at least 0.5 m/s across SSDs- Higher flow rate, higher thermal uniformity
but higher cost.- Must sustain Temp. up to 105oC
Main componentsHeat exchanger:Cooling coil
Need analysis on:- Material
- Dimensions: length, wall thickness
- Fins or no fins
Main componentsInsulation:
Preferred characteristics:- High thermal resistivity.- Low cost.- Light weight.- Safe: fire-proof.
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.
CONCLUSION