PURPOSE: A multiple development method is provided to produce energy using the compressed air in a water jet method. CONSTITUTION: Air is inserted into the upper part of a closed water tank and water is injected into the tank through a nozzle in a water jet method. A hole is formed on a domain of a thin pipe in which the water pressure of the water has been decreased. An area of the air leakage is closed from atmosphere. When the atmospheric air enters to the closed place, the atmospheric air enters through the injection nozzle.
展开▼