Many families now install and use water heaters, which can provide the convenience of bathing at home. As electric heaters are more and more widely installed and used, people have begun to pay attention to the heating methods of electric water heaters. So what are the common heating methods of electric water heaters.
At present, most electric water heaters use metal electric heating tubes for heating. The production cost of this heating method is relatively low, so it is widely used. Nickel-chromium wire electric heating tubes are often used for heating. There is a layer of magnesium oxide between the metal tube and the heating wire, which can provide good insulation and thermal conductivity. However, when iron electric heating tubes are used in electric water heaters, they are more likely to rust. Therefore, the use of stainless steel electric heating tubes is gradually increasing. However, heating tubes made of this material are more likely to produce scale.
Electric water heater heating methods also include surface coating heating methods. Surface coating heating is divided into non-metal coating and metal surface insulation and coating. Non-metal surface coating can also be divided into ceramic tube type, glass tube type and quartz tube type. There are many coating methods, and coating can be carried out through various methods such as coating, spraying and printing. In order to make the heating performance of the water heater better, it is necessary to choose high-quality materials for production. On the one hand, it must have good thermal conductivity, and on the other hand, it should also have insulation. The coating method directly affects the service life of the electric heating film.
Ceramic heating rods and PTC ceramic heating sheets are also relatively common heating methods. Ceramic heating rods are one or more pieces of ceramic that enter the water with electric heating materials to achieve heating purposes. Because this heating principle is relatively unique, there are no safety hazards. PTC ceramic electric heating sheets are positive temperature coefficient electric heating materials. The temperature of this material is relatively low, and the resistance is relatively small and the heating power is small. The heating methods of ceramic electric heating rods and PTC ceramic electric heating sheets are relatively safe and fast, and the thermal efficiency is also relatively high.
The above is a brief introduction to common electric water heater heating methods. Whether it is a metal electric heating tube heating method or a surface coating heating method, a ceramic electric heating rod, a PTC ceramic electric heating sheet, etc., there are certain heating methods. Advantages and disadvantages, so when users purchase electric water heaters, they need to understand the heating method used by electric water heaters, and then choose to purchase electric water heater products based on actual use needs.