1. ME 388 – Applied Instrumentation Laboratory Stirling Cooler Lab

2. http://www.globalcooling.com/stircoolunit.html

4. Stirling Cooler Experiment

6. Laboratory Objectives Operating the Global Cooling Model 100B Stirling Cooler Applying Principles of Thermodynamic Calculating –Heat Rejected –Heat Lifted –Coefficient of Performance (COP)

7. Thermodynamics Ideal Stirling Cycle: –Regeneration - Cold –Expansion - ISO –Regeneration – Hot –Compression - ISO

8. Calculations Coefficient of Performance (COP) Heat Absorbed Delivered Power Heat Lost??

9. Calculations Heat Absorbed Heat Rejected

10. Procedure Setup Data Acquisition Turn on water and measure average flow Turn on heat accepter power Record data until heat accepter temperature reaches -30 °C Turn on heat rejecter power until equilibrium is reached around -20 °C Stop collecting data and turn off equipment

11. Transient Results

12. Results Temp.TimeCpdT/dtHeat LiftedPowerCOP (C)(sec) (J/kg-K) (K/s)(W) (experiment)(Global Cooling)(Carnot) 057379-0.2323.3810.612.23.0813.2 -580378-0.220.5910.661.92.8511.1 -10107376-0.1817.8310.71.72.549.2 -23201373-0.1110.7210.7512.018.3

13. Results Volumetric Flow Rate Mass Flow Rate Equilibrium Heat Rejected Heat Lifted Heat Lost Power delivered COP 1.72E-6 m 3 /sec 1.72E-3 kg/sec 14.39 W 4.52 W 7.67 W 9.86 W 0.459 @ -21.09 °C

14. Uncertainties Time: W t = 1 s Volume: W v = 1ml = 0.000001 m 3 Rejector Temp: W Tin = W Tout = 2C Current: 0.01 amps Voltage: 0.01 volts Stirling Power: 0.1 W

15. Uncertainty Analysis

16. Uncertainty Analysis (cont.)