Hello! Meibang is not only used in solar water heaters, but also in storage type high temperature water tanks such as electric water heaters. Because the tap water we use contains a large number of anions, and once the water is heated, these ions will be heated. be very active and interact with the water tank. The metal coating reacts and corrodes the water tank over time. The magnesium ions in the magnesium rod are cations and are active when corrosion occurs, they react first with the magnesium rod, thus protecting. the life of the water tank and liner;
Generally, for areas with poor water quality, it is recommended to replace the magnesium rods every 2-3 months. For areas with good water quality, it is also possible to. replace the magnesium rods once every 1 to 2 years. I hope this can help youhelp.
Is it harmful to the human body to install solar anode magnesium rods in water heaters?
Magnesium ions released into the water combine with oxygen ions present in the water to form magnesium oxide molecules. At this time, the water in the water tank is anaerobic water and will not corrode other water tank accessories. Plays a role in protecting the water tank. However, magnesium rods have a time limit and will expire in 2 years. Therefore, in order to extend the life of the water tank, the magnesium rod should be replaced every two years~
Harmless.
The role of magnesium rods placed in water heaters is to absorb ions present in the water heater water and protect the water heater's inner tank and heating tube. In water heaters, magnesium rods are installed in the middle of the metal cladding. When the reenamel clothing on the surface of the metal coating is intact, the enamel protects the metal coating, the insulation resistance between the magnesium rod and the metal coating can reach more than 2MΩ, and the output current of the anode in magnesium (rod) is almost zero.
When a local crack occurs in the enamel coating, a small resistance is formed between the magnesium anode and the metal coating through the water, and the magnesium anode begins to produce current, which flows to the exposed metal coating to produce a polarized film, repairs damaged enamel, isolates the coating from the gold domain to prevent corrosion.
Detailed information:
Precautions for using the water heater:
1. The water used contains impurities and various metallic substances. Long-term use will cause oxidation reactions and corrode the inner tankr. The inner tank is the heart of the electric water heater. Once the inner tank is corroded or damaged, it will be corroded. leak and is difficult to repair. You can only replace the coating.
2. The cost of replacing a new liner is the same as purchasing a new water heater. Magnesium rods placed in the water heater will absorb ions present in the water and protect the liner and heating tubes.
3. Depending on water quality, the magnesium rod in the enameled water heater should be replaced every one to two years. Otherwise, once the magnesium rod is exhausted, the water heater will quickly corrode and leak.
4. The cost of replacing the magnesium rod should also be noted. The replacement of the magnesium rod is free during the warranty period, but after the warranty period, you need to pay the material charges.
Baidu Encyclopedia - Magnesium rod
Baidu Encyclopedia - Water heater