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Acoustic Refrigeration
Isaac Lockman
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Foundation Thermoacoustic Refrigeration Alternative
Replaces Compressor with a loud speaker Substitutes conventional refrigerants for inert gases (i.e. helium) Figure 1: Conventional Refrigeration Cycle Acoustic Refrigeration - Isaac Lockman
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Operation Increase Pressure raise Temperature
Diffusion of heat to or from stacks: Thermal Penetration Standing Wave: Pressure in phase with Displacement Figure 2: Acoustic Refrigeration Cycle Acoustic Refrigeration - Isaac Lockman
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Acoustic Refrigeration - Isaac Lockman
Application Existing NASA Preserve blood and urine samples U.S. Navy Cool radar electronics onboard warships Potential Marine Vehicles Replace Noisy Generators Satellite Sensors Super-Fast Computers Acoustic Refrigeration - Isaac Lockman
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Figure 3: Penn State Thermoacoustic Refrigerator
Acoustic Refrigeration - Isaac Lockman
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Motivation One moving part Applicable to existing Systems
Yields 30% Carnot Cycle Efficiency Applicable to existing Systems Minimal Maintenance No CFC’s or HFC’s Less Energy Wasted Regenerative Figure 4: Car Stereo Cooler Acoustic Refrigeration - Isaac Lockman
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Acoustic Refrigeration - Isaac Lockman
References Acoustic Refrigeration - Isaac Lockman
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Acoustic Refrigeration - Isaac Lockman
Q & A Acoustic Refrigeration - Isaac Lockman
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