| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat acoustic device capable of reducing a time required until sound waves are generated and well exchanging heat in stacks. SOLUTION: A first stack 3a held by a first high temperature side heat exchanger 4 and a first low temperature side heat exchanger 5 and a second stack 3b held by a second high temperature side heat exchanger 6 and a second low temperature side heat exchanger 7 are installed in a loop tube 2. Standing waves and traveling waves are generated by heating the first high temperature side heat exchanger 4, and the second low temperature side heat exchanger 7 is cooled by the standing waves and the traveling waves, or/and the standing waves and the traveling waves are generated by cooling the first low temperature side heat exchanger 5, and the second high temperature side heat exchanger 6 is heated by the standing waves and the traveling waves. The standing waves and the traveling waves are generated in the loop tube in which helium having a high sound velocity, a small Prandtl number, and a small specific gravity is sealed, and then argon having a low sound velocity, a large Prandtl number, and a small specific gravity is filled therein. COPYRIGHT: (C)2006,JPO&NCIPI
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