Passive condensation tank cooling system of passive auxiliary feedwater system

A passive condensation tank cooling system of a passive auxiliary feedwater system, the cooling system comprising:

• a passive condensation tank including:
• outer walls defining an exterior of the passive condensation tank, the outer walls including:
• outer lateral side walls, and
• an outer bottom wall;
• inner walls disposed inside the outer walls, the inner walls including:
• inner lateral side walls, and
• an inner bottom wall,
• wherein the inner lateral side walls are and spaced apart from the outer lateral side walls, and the inner bottom wall is spaced apart from the outer bottom wall;
• a water storage space formed by the inner walls and storing heat-exchange water;
• and
• a refrigerant storage space formed between the outer walls and the inner walls and extending along the inner lateral side walls and the inner bottom wall, the refrigerant storage space storing being configured to store a refrigerant,
• wherein the water storage space and the refrigerant storage space are separated by the inner walls such that the heat-exchange water and the refrigerant remain isolated from each other even when the refrigerant storage space is completely filled with the refrigerant;
• a condenser arranged inside the water storage space to be immersed in the heat-exchange water;
• a steam supply pipe connected to an inlet of the condenser to allow steam to be introduced into the condenser;
• and
• a condensate water recovery pipe connected to an outlet of the condenser to allow water condensed by the condenser to flow out of the condenser,
• wherein the refrigerant in the refrigerant storage space is configured to absorb heat of the heat-exchange water in the water storage space.