Results are shown of the trials of an experimental gas-dynamic cryogenerator. In contrast to the classical resonance tube, an annular gas jet is used. It is shown that periodic alternation of the resonance zones resulting from the cellular structure of the jet takes place when the tube moves relative to the nozzle. A schematic is provided of the gas-dynamic cryogenerator. One of the most important characteristics of a gas-dynamic cryogenerator is the temperature level at which the heat is diverted to the terminal heat exchanger. The trials of the experimental gas-dynamic cryogenerator showed that it is more efficient than the expanding throttling devices and is a promising apparatus for application in refrigerating and cryogenic engineering.