The performances of a thermoacoustic travelling-wave
refrigerator are presented. Developed in the frame of the European
project called THATEA, it is designed for providing 600 W at a
temperature of 233 K with an efficiency of 40 % relative to the
Carnot efficiency. This paper presents the device and the results of
the first measurements. For a cooling power of 210 W, a coefficient
of performance relative to Carnot of 30 % is achieved when the
refrigerator is coupled with an existing standing-wave engine.
 A. Bétrancourt and E. Bretagne, CRISTA : Logiciel de calcul de points
de fonctionnement des réfrigérateurs thermoacoustiques, 2004.
 G. W. Swift, D. L. Gardner and S. Backhaus, "Acoustic recovery of lost
power in pulse tube refrigerators", Journal of the Acoustical Society of
America, Vol. 105, 2, pp. 711-724, 1999.
 J. R. Olson and G. W. Swift, "Acoustic streaming in pulse tube
refrigerators: Tapered pulse tubes", Cryogenics, Vol. 37, pp. 769-776,
 A. M. Fusco, W. C. Ward and G. W. Swift, "Two-sensor power
measurements in lossy ducts", Journal of the Acoustical Society of
America, Vol. 91, 4, pp. 2229-2235, 1992.