An open-loop type heat equalization device utilizing the heat exchange fluid to transmit the thermal energy of a natural thermal energy storage body to an external temperature differentiation body, and including one or more than one of following structural devices, including: 1) installing the space limiting and flow direction guiding structure (201) for allowing the thermal energy fluid to be released from the fluid inlet/outlet port (4011), and a part thereof is returned to the fluid inlet/outlet port (3012) then flowing back to the heat gaining device (101); 2) installing an outward-expanding arc-shaped fluid chamber (108) at turning locations of the flowpath; 3) installing an auxiliary heating/cooling device (115); 4) installing an auxiliary fluid pump (107); 5) installing a heat exchange fluid temperature sensing device (TS201); 6) installing an environment temperature sensing device (TS202); and 7): installing an electric power control unit (ECU200).