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thermoacoustic cooling 7 may 2004 ben & jerry's cherry garcia 'chills' to music scientists have found a new way to refrigerate ice cream with sound waves instead of chemicals. the new cooling system, developed at penn state university, can power a small ice-cream freezer case. the technology, called "thermoacoustics," is sponsored by ben & jerry's ice cream, long known for its efforts to protect the environment. thermoacoustics uses 60 percent less energy than traditional freezers. read the npr report http://www.npr.org/features/feature.php?wfid=1861434 see the high-bandwidth ben & jerry animation http://www.benjerry.com/our_company/sounds_cool/ visit the cool sound website http://www.coolsound.us/ and see page 25 of http://www.ases.org/conferences/2004_call_for_papers/solar2004_prelim_program.pdf nick |