Steam condensing apparatus

A steam condensing apparatus comprising:

• a container for holding a coolant in a liquid state;
• a guide pipe having a first distal end connected through a safety valve to a source of a high pressure coolant in a gaseous state and a second distal end extending into said coolant in said container;
• and
• a plurality of branch pipes extending from said second distal end of said guide pipe and having exhaust nozzles at the forward ends thereof, in which when said safety valve is in an inoperative state, said coolant and air in said container enter into the branch pipes and guide pipe with the air forming an upper layer and the coolant forming a lower layer, and when said safety valve is operated to permit the high pressure coolant of the gaseous state to flow into the guide pipe, said coolant and said air in the guide pipe and branch pipes and high pressure coolant of the gaseous state passed through the safety valve are ejected through the nozzles into the coolant in the container;
• wherein said branch pipes are arranged in pairs, the exhaust nozzles in each pair being spaced apart from one another by a degree sufficient to prevent a merger of bubbles formed by said ejected air in the coolant in the container and a merger of steam regions formed by said ejected coolant of the gaseous state in the coolant in the container, said steam regions forming gas-liquid interfaces where the coolant in the gaseous state condenses;
• and wherein
• at least one of the measures including the diameter of the nozzle and length of the branch pipe being different for each of said branch pipes.