What are the common heating methods of electric water heaters? Brief introduction [detailed explanation]

Nowadays, many families will install and use water heaters, which can realize the convenience of bathing at home. With the more and more extensive installation and use of electric water heaters, people begin to pay attention to the heating mode 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. This heating method is widely used because of its relatively low manufacturing cost. Nickel-chromium wire electric heating tube is commonly used for heating, and there is a layer of magnesium oxide between the metal tube and the electric heating wire, which can play a good insulating effect and heat conduction role. However, when iron electric heating pipes are used in electric water heaters, it is easy to rust, so the application of stainless steel electric heating pipes is increasing gradually, but the electric heating pipes made of this material are more prone to scaling.

Electric water heaters also have surface coating heating methods, and surface coating heating can be divided into two types: non-metallic coating and metal coating after heat preservation. Non-metallic surface coatings can also be divided into ceramic tube, glass tube and quartz tube. There are many methods of coating, which can be carried out by coating, spraying and printing. In order to make the heating performance of water heater better, it is necessary to choose high-quality materials to make it. On the one hand, it should have good thermal conductivity, on the other hand, it should also have insulation, and the coating method directly affects the service life of electric heating film.

Ceramic electric heating rods and PTC ceramic electric heating plates are also common. Ceramic heating rods are one or more pieces of ceramics that are heated when electric heating materials enter water. Due to the unique heating principle, there is no potential safety hazard. PTC ceramic heater is a positive temperature coefficient material with low temperature, low resistance and low heating power. The heating methods of ceramic electric heating rod and PTC ceramic electric heating plate are relatively safe and fast, and the thermal efficiency is relatively high.

The above is a brief introduction to the common heating methods of electric water heaters. Whether using metal electric heating tube heating method or surface coating heating method, ceramic electric heating rod, PTC ceramic electric heating plate and other heating methods, there are certain advantages and disadvantages. Therefore, when purchasing electric water heaters, users need to know the heating methods adopted by electric water heaters, and then choose to purchase electric water heaters according to the actual use requirements.