Penn State acousticians have achieved proof of concept for a compact ice cream freezer case based on "green" technology that substitutes sound waves for environment-damaging chemical refrigerants.
Dr. Steven Garrett, the United Technologies Corporation professor of acoustics at Penn State, leads the research team conducting the project with financial support from Ben & Jerrys and its parent company, Unilever.
"In our proof-of-concept test system, there is no test freezer, we simply cool an electrically-heated piece of window screen. The coldest temperature we have achieved with this test rig is eight degrees below zero – well below the freezing point of water," Garrett says.
Barbara Hale | EurekAlert!
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