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Acoustic Refrigeration

Acoustic Refrigeration. Isaac Lockman. Foundation. Thermoacoustic Refrigeration Alternative Replaces Compressor with a loud speaker Substitutes conventional refrigerants for inert gases (i.e. helium). Figure 1: Conventional Refrigeration Cycle. Operation.

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Acoustic Refrigeration

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  1. Acoustic Refrigeration Isaac Lockman

  2. 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

  3. 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

  4. 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

  5. Figure 3: Penn State Thermoacoustic Refrigerator Acoustic Refrigeration - Isaac Lockman

  6. Motivation • One moving part • 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

  7. References • http://www.americanscientist.org/issues/id.858,y.0,no.,content.true,page.7,css.print/issue.aspx • http://www.acs.psu.edu/thermoacoustics/refrigeration/benandjerrys.htm • http://www.benjerry.com/our_company/sounds_cool/ • http://www.nrel.gov/vehiclesandfuels/ancillary_loads/heat_utilization.html?print • http://www.ehponline.org/docs/1994/102-9/innovations.html • http://www.thg.ru/cpu/20001103/print.html • http://www.personal.psu.edu/dpg136/Penn_State.gif • http://www.mediascape.ac.nz/content/UserFiles/images/cartoons/man-listening-to-music-in-car.gif Acoustic Refrigeration - Isaac Lockman

  8. Q & A Acoustic Refrigeration - Isaac Lockman

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