1. Enter the Kingdom Hall and click on News.
2. Click on the “Tide Lock” activity and enter.
3. Come to "Atlantis" and click on the NPC on the map.
4. Open the activity panel and click to get “Tidal Power”.
5. Defeat the boss to obtain the "Power of Tide". It is recommended to use "Doom" and "Martial King".
6. Click “Start Lock” to lock the “satellite”.
The principle of solar water heater
The video of the reaction between metallic sodium and water is as follows: Sodium and water The reaction produces a violent chemical reaction in which hydrogen gas is released and an alkaline solution is produced. 1. Reaction mechanism The reaction between sodium and water is a redox reaction between metals and non-metals, and is also a typical example of a strong chemical reaction between sodium and water. . During the reaction, the sodium metal ions are oxidized by the oxygen in the water and the hydrogen ions in the water molecules are reduced by the sodium ions, releasing hydrogen gas. The reaction between sodium and water is an explosion, luminescence and a rise in temperature. The sodium-water reaction refers to the fact that when sodium comes into contact with water or steam, it slowly heats up, causing an explosion and luminescence. The phenomenon is a strong chemical reaction. 2. Heat release The reaction between sodium and water is a highly exothermic reaction process, because when sodium comes into contact with water, the surface of sodium is immediately decomposed by water into hydrogen gas and sodium hydrogen oxide. This process releases large amounts of thermal energy, prevoking violent boiling of water and even sparks. 3. Hydrogen release Hydrogen gas produced by the reaction of sodium and water is an important product of this reaction. Hydrogen is a flammable gas that is released in the form of bubbles where sodium and water come into contact during the reaction. Due to the flammability of hydrogen, this reaction is very dangerous and must be carried out in the laboratory or under specific conditions. 4. Generation of an alkaline solution The hydrogen ions and sodium hydroxide solution produced by the reaction of sodium and water are alkaline. Since sodium hydroxide is a strong base, the reaction of sodium and water produces a highly alkaline solution. This makes the reaction solution corrosive and irritating, requiring careful handling in the laboratory. Summary: The reaction of sodium and water is a violent chemical reaction inin which sodium is oxidized by water to hydrogen gas and sodium hydroxide. This reaction releases a large amount of thermal energy and produces a highly alkaline solution. The release of hydrogen gas makes this reaction dangerous and requires a suitable environment. This reaction is one of the experiments often carried out in chemical education. By observing and studying this reaction, we can gain an in-depth understanding of the redox reactions of metals and non-metals.
Diagram of working principle of solar water heater 1. Cold water enters the solar water heater through the pipe, passes through the heat collecting plate and the heat collecting plate can collect solar energy, convert solar energy. Transform solar energy into thermal energy, then heat cold water. Since the density of cold water is greater than that of hot water, hot water will increase as muchomatically, then will form a circulating power. The water will gradually heat up on the heat collecting plate. After reaching a certain temperature, it can enter. the hot water tank. Those who need hot water will be able to get hot water at any time. Heating Figure 2. In fact, the principle of solar water heaters mainly includes the following two principles: (1) The principle of water circulation, that is, the water flows automatically. This is based on the fact that cold water is denser than hot water. Cold water flows and hot water rises, forming natural convection that gradually heats the water in the water tank until it reaches the set water temperature. When the intensity of the sun is not sufficient to meet circulation needs, a water pump can be added to the closed water circulation circuit to obtain forced circulation. (2) Principlecollector heat absorption ipe: There is a special coating on the collector surface of the solar water heater. This coating has a high absorption rate in the visible range of solar energy. After absorbing it in the form of heat, heat. the radiation from the collector will have the wavelength in the longwave range and the coating has low longwave emissivity, thus effectively retaining solar heat. This heat is then used to gradually heat the cold water into hot water. Solar collector tube Let's talk in detail about the collector tube on this collector. The collector tube is actually like an elongated hot water kettle liner. It is made of two glass tubes, one large and one small. the inner layer is covered with a spectrally selective absorption coating and a straight void is drawn between the inner and outer tubes. It constitutes the core of the solar water heater and is usedé to maximize the absorption of thermal energy after solar radiation due to vacuum. The glass tube is round, has the characteristics of naturally following the wide source of the sun, coupled with the reflection principle of the reflector, the glass tube can receive light from all sides, the heat collection effect lasts longer , the water temperature is higher, and it can work normally all year round, even in alpine areas.