真空管在太陽光 線作用下，管內水逐漸被加熱，由於熱水受熱比重下降，會水

Under the effect of sun rays, the water in the vacuum tube is gradually heated. Due to the decrease in the specific gravity of the hot water, the water tank will float up, and the cold water in the water tank will sink to the vacuum tube. The water in the vacuum tube is continuously heated and the water tank The cold water continuously forms a natural cycle of temperature difference, so it will heat the water in the entire storage tank to a certain temperature.

Vacuum tube under the action of the sun line, the water in the tube is gradually heated, because the proportion of hot water is reduced, the water tank will float, and the cold water ratio in the water tank is significant, will sink to the vacuum tube, then the water of the vacuum tube is constantly heated, and the cold water in the water tank constantly forms a natural cycle of temperature difference, so the water of the entire water tank will be heated to a certain temperature.

Under the action of sunlight, the water in the vacuum tube is gradually heated. Due to the decrease of the heating proportion of hot water, the water tank will float up. However, the cold water in the water tank will sink to the vacuum pipe. At this time, the water in the vacuum pipe is continuously heated, and the temperature difference between the water in the vacuum pipe and the cold water in the water tank will be naturally circulated. Therefore, the water in the whole water storage tank will be heated to a certain temperature.