The optimal stack spacing for thermoacoustic refrigeration

M.E.H. Tijani, J.C.H. Zeegers, A.T.A.M. Waele, de

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    Samenvatting

    The characteristic pore dimension in the stack is an important parameter in the design of thermoacoustic refrigerators. A quantitative experimental investigation into the effect of the pore dimensions on the performance of thermoacoustic devices is reported. Parallel-plate stacks with a plate spacing varying between 0.15 and 0.7 mm are manufactured and measured. The performance measurements show that a plate spacing in the stack of 0.25 mm (2.5k) is optimum for the cooling power. A spacing of 0.4 mm (4k) leads to the lowest temperature. The optimum spacing for the performance is about 0.3 mm (3k). It is concluded that a plate spacing in the stack of about three times the penetration depth should be optimal (3k) for thermoacoustic refrigeration.
    Originele taal-2Engels
    Pagina's (van-tot)128-133
    TijdschriftJournal of the Acoustical Society of America
    Volume112
    Nummer van het tijdschrift1
    DOI's
    StatusGepubliceerd - 2002

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