抄録
The purposes of this research are to make the hydraulic ram pump suitable as a teaching material and to examine its characteristics. The hydraulic ram pump raises water to a level which is higher than its original position by simply using the potential energy of the water without using any outside energy such as gas or electricity. In this study, we made a hydraulic ram pump, which can be made easily and whose characteristics can be experimented, and examined its characteristics. It has the following characteristics; a. By utilizing a kerosene supply pump, a hydraulic ram pump can be made easily. b. It is possible to experiment with changing conditions by utilizing the joint of the water service pipe. c. It is possible to experiment in the simple operation of measuring the quantity of water. d. There is no significant difference on the pumpage of the hydraulic ram pump, even if the angle of the feed pipe is changed. e. The pumpage of the hydraulic ram pump increases, as the head gets bigger. f. The pumpage of the hydraulic ram pump increases with the length of the feed pipe. g. The pumpage of the hydraulic ram pump increases when a weight was attached to the water pumping valve. The hydraulic ram pump has a strange aspect which apparently does not obey the energy conservation law. Therefore, it has great potential as a teaching material for inquiry activities.
