TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The inner volume of the pot body is 10-1000 cm3. The surface of the water inlet column tube adhered on surface of the inner wall is uniformly distributed with small holes and the diameters of the holes are 0.01-1 mm. The separation film is a hollow stainless steel ring, where the upper and lower surfaces are adhered with compact foamed nickels, and the external diameter of the ring is equal to internal diameter of the water inlet columnar tube. The heat exchanging chamber is a hollow body between the inner and outer walls of the pot body and the width is 1-10 mm. The capillary tube is arranged above the inner wall side of the pot body, where the capillary tube is 1-10 mm long and the diameter is 0.1-2 mm. The bottom of the pot body is connected with the water injecting tube, where the water injecting tube is vertical to the horizontal plane of the pot body, and is 10-30 cm higher than the horizontal plane of the pot body. The place contacted with the atmosphere of the water injecting tube port is provided with threads, which can be connected with a flume and a crew cap. The internal diameter of the water injecting tube is 1-50 mm, the threads are 5-20 cm long, the screw cap matched with the water injecting tube is 5-20cm long and the internal diameter is same as the external diameter of the water injecting tube. A cylinder is welded inside the screw cap. The external diameter is same as the internal diameter of the water injecting tube and the height of the cylinder is same as the height of the screw cap. The aluminum alloy is pre-stored in the hydrogen generator. The water enters into the water injecting tube by the flume, and flows into the heat exchanging chamber by the gravity action, and then enters into the hydrogen generator by the capillary tube connected with the heating exchanging layer for reacting to generate hydrogen and form a certain pressure. When the hydrogen pressure is high, the water flow stops. The water inlet amount and water inlet speed of the hydrogen generator is controlled by the rotating length of the screw cap and regulating the entering pressure of the water.