Pump-free water-cooling system

A pump-free water-cooling system, comprising:

• a heat-exchange circulating solution container in which heat-exchange circulating solution and vapor of the circulating solution can be contained;
• solution outlets to discharge from the container the heat-exchange circulating solution, wherein the solution outlets are provided at both ends of the container;
• a gas-liquid two-phase fluid inlet to charge into the container gas-liquid two-phase fluid composed of the heat-exchange circulating solution at high temperature and vapor bubbles of the circulating solution;
• a first transportation route along which a sensible-heat-emitting heat exchanger is provided, the first transportation route being linked with each of the solution outlets;
• a second transportation route along which heat exchange is carried out between heat-exchange circulating solution therein and the heat-exchange circulating solution in the container, or between the heat-exchange circulating solution therein and the heat-exchange circulating solution in the container and the vapor of the heat-exchange circulating solution in the container;
• a third transportation route along which a heating heat exchanger is provided, the third transportation route being linked with the gas-liquid two-phase fluid inlet;
• and
• a circulating-solution transporting route in which the first transportation route is linked to the second transportation route and the second transportation route is linked to the third transportation route.