Volumetric heat exchanger with self-excited pulsating enhanced heat exchange function and working method thereof

The invention provides a volumetric heat exchanger with a self-excited pulsating enhanced heat exchange function and a working method thereof. The volumetric heat exchanger comprises a shell, a partition plate, a heating medium inlet pipe section, a heating medium outlet pipe section, a refrigerating medium inlet pipe section, a refrigerating medium outlet pipe section, a heat exchange pipe, hoses, a flow limiting valve, a self-excited oscillation device and a pulsating hydraulic transmission device. According to the volumetric heat exchanger with the self-excited pulsating enhanced heat exchange function, a pulsating jet is produced by the heating medium when the heating medium passes through a Helmholtz resonant cavity of the self-excited oscillation device; by utilization of the pulsating hydraulic transmission device, the pulsating jet is effectively converted into beneficial vibrations of the heat exchange pipe; compared with that of the stable-state flowing condition, the heat exchange efficiency of the