Analysis of effectiveness for a stirling machine regenerator

Title & Authors
Analysis of effectiveness for a stirling machine regenerator
Jo, Gwan-Sik; Lee, Dae-Yeong; No, Seung-Tak;

Abstract
The effectiveness of the regenerator pertaining to Stirling cycle machines is studied by analyzing the heat transfer characteristics of the oscillating flow in a tube, and a new consistent definition of the regenerator effectiveness can be expressed by the ratio of the heat transfer in axial direction (Q$\small{\_}$axial/) to that in transverse direction (Q/su w/), and its approximate form is obtained as a function of Nusselt number for practical utility. Since an approximate value of the ratio Q$\small{\_}$axial//Qsub w/ can be expressed in terms of the time-averaged rather than transient temperatures, this expression is useful to estimate the heat transfer coefficient in the Stirling machine regenerator experimentally.
Keywords
Stirling Cycle;Regenerator;Effectiveness;Oscillating Flow;
Language
Korean
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