1. Thermopile Test Bench Team Thermopilers Adrian Aspinall, Paul Sowinski, David Eld, Michael Sotolongo,Tyler Merritt 1

2. Thermopiles Thermo-Electric Device Converts Thermal Energy to Electrical o Based on the Seebeck & Peltier Effects Constructed from various Ceramics o Ours are Bismuth Telluride

3. Problem Statement To design and fabricate test equipment to accurately and easily determine efficiency and electrical performance of thermopiles under an imposed temperature gradient. The device must withstand vacuum, apply axial load, and display and record relevant data

4. Efficiency- Experimental Determination Q dot_in = q" in * A Q dot_out = q" out * A From 1st Law: Q dot_in - P out = Q dot_out Where P out = V 2 / R Nu=P out / Q dot_in

5. Requirements Measure Electrical Characteristics o Impedance o Determine Power & Efficiency Measure Heat Transfer Adjust Axial Loading Display and Record Data Test in Vacuum

6. Design Mechanical Systems Thermal Systems Electrical Systems Software

7. Mechanical Systems- Loading DC Linear Actuator Springs to Increase Resolution Load cell Guide Rods Load Isolation o Heater o Cooler

8. Mechanical Systems- Vacuum Bell Jar Base Plate Vacuum Pump Feedthroughs

9. Thermal Systems Thin Film Heater Peltier Cooler Water Block Sensors

10. Electrical System

11. Software and Data Acquisition LabVIEW Sensors Calculations Control Data Logging

12. Questions?