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 Acoustic Refrigeration - Isaac Lockman

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

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

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

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

Acoustic Refrigeration - Isaac Lockman 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

Acoustic Refrigeration - Isaac Lockman Q & A Acoustic Refrigeration - Isaac Lockman