Abstract: The mixing nozzle has a throat section, a diffuser section, a gas nozzle section, a first liquid suction port, a liquid nozzle section, a second liquid suction port, a baffle plate, and a jetting port. The first liquid suction port liquidly absorbs the solution in the water storage pool from a side of the gas nozzle section toward the gas nozzle tip. The liquid nozzle section extends to the downstream side of the gas nozzle section with intervening the first liquid suction port. The second liquid suction port liquidly absorbs the solution in the water storage pool from a side of the liquid nozzle section toward the liquid nozzle tip. The baffle plate is provided such that the mixed flow mixed in the diffuser section collides in front of a downstream end of the diffuser section, and divides and reverses the mixed flow.

Abstract: Negative (?) terminals and positive (+) terminals of a plurality of cells in a connected state are housed in a metal case. The metal case is attached with positive-side and negative-side external terminals, and the external terminals and cell terminals are connected with each other through lead wires. The metal case is attached with a voltage monitoring connector, and the voltage monitoring connector and a voltage taking electric wires extending from the positive and negative sides of the respective cells are connected with each other. Through the voltage monitoring connector, the charging degrees of the individual cells can be obtained, thereby preventing the cells from being overcharged.

Abstract: A power absorbing device according to the present invention is a device for absorbing the mechanical energy of reciprocating motion of pistons of a reciprocating adiabatic expansion engine, comprising a cylindrical cam having a hollow space therein and converting the reciprocating motion of the pistons into rotatory motion, a speed-increasing gear disposed in the hollow space to increase the speed of the rotary motion and having an output shaft to rotate at an increased speed, and an electric generator including a rotor mounted on the output shaft to rotate and an electric generating section operating jointly with the rotor to supply an external load with electric power.

Abstract: An expansion engine fixed to a flange so as to extend into a vacuum tank comprises an outer cylinder inserted in said vacuum tank and having its proximal end opening into the atmosphere, an inner cylinder removably inserted from its distal side into said outer cylinder through said opening, a piston capable of reciprocating inside said inner cylinder and having an exhaust valve, an intake valve mechanism disposed on the distal side of said inner cylinder and capable of moving together with said inner cylinder, and O-rings disposed between said inner and outer cylinders to seal the interface between said cylinders airtightly.