Pump-free type liquid circulation heating system and application method

The invention relates to a pump-free type liquid circulation heating system and an application method. The pump-free type liquid circulation heating system comprises a water tank used for storing heating liquid, a pump-free type power module, a heating module for heating liquid, a control module for adjusting and controlling the heating temperature of the liquid in a pipe by the heating module, a circulation pipe and a temperature sensor for sensing the temperature at the backflow end of the liquid in the circulation pipe nearby the bottom of the sensing water tank; the temperature of an object needing to be heated is adjusted and controlled through the control module, the control module controls the heating module to work, the liquid in the pipe of the heating module is heated through the heating module, and a temperature signal is transmitted to the control module through the temperature sensor. By means of the pump-free type liquid circulation heating system and the application method, the pump-free type p