The single-phase forced-oscillating-flow heat pipe is called a "dream pipe". In this study, the performance of the dream pipe was measured as a function of the oscillation amplitude and frequency. The measured results were compared with the analytically obtained results that were calculated by using thermoacoustic theory. As a result, it was found that the dependence of the experimental results on the dimensionless parameter related to the amplitude and frequency was similar to that of analytical ones.