What kind of electric water heater to choose, "the public is reasonable, the mother-in-law is reasonable". However, according to the current trend, more and more people have begun to accept the saying that "instant electric water heaters are actually very energy-saving". In view of its many other advantages, many people have begun to consciously decide that if they buy electric water heaters at home, they must choose instantaneous electric water heaters. Thermal electric water heater. So, do you really know about instant electric water heaters? Do you really know how to buy your favorite electric water heater through just a few seconds of advertising? Today I will take you to buy an electric water heater of your choice!
Safety is the most important
Regarding the frequent incidents of electric water heaters, while we feel distressed, we also condemn unscrupulous sellers in our hearts. So how to protect yourself from inferior electric water heaters? As early as July 2007, in order to prevent consumers from being harmed by inferior water heaters, a new version of the national safety report standard for electric water heaters was issued. On December 29 of the same year, it was recognized by the International Electrotechnical Commission as an international standard for electrical protection walls. When buying electric water heaters safely, please pay attention to the national standard electrical wall signs.
The heating element is the core
The key to the quality determined by the working principle of instant electric water heaters and quick-heating electric water heaters depends on the core component-heating element, and the key to the quality of the heating element depends on the selected material. Therefore, whether it depends on the material is also the key to whether you can choose a suitable electric water heater. The heating elements currently on the market are divided into two categories: metal heating elements and non-metal heating elements. Metal heating elements include stainless steel and copper, etc.; non-metal heating elements include quartz glass tubes, ceramics, etc. Therefore, what kind of electric water heater to choose must first understand the advantages and disadvantages of each of these attributes!
The characteristics of copper:
It is soft and easy to be stretched and formed, acid-resistant and not alkali-resistant. Since most of our domestic water is alkaline water (more alkaline in coastal areas), it is easy to oxidize and produce patina, and the corrosion is more serious when high temperature and heat are generated. High temperature breakdown, resulting in leakage. The inner tank has poor pressure-bearing capacity and is prone to bursting at high temperatures.
Features of stainless steel:
The hardness is higher than that of copper, it is not easy to deform, and it is resistant to alkali and acid. Since most of our domestic water is alkaline water, it is extremely difficult to be oxidized. Low heat energy loss rate, uniform heating, good pressure resistance, good heat-resistant expansion and cold shrinkage.
Non-metal heating body:
The so-called non-metallic heating element is precisely a non-metallic heat conductor. Non-metal heating elements are divided into quartz glass tubes, ceramics and so on.
The quartz glass tube heater uses a quartz glass tube as the base material, and coats a layer of non-metallic material on its surface to become an electric heating film after sintering, and then adds a metal ring as an electrode to the two ports of the glass tube and the surface of the electric heating film. It constitutes a complete heater. Therefore, it can also be called a quartz glass tube heater.
After understanding these cores, you will be able to penetrate the phenomenon to see the essence. Once you were only interested in the compactness and beauty of the electric water heater, but now you can show off your professional knowledge when buying an electric water heater. Sales staff will also be stunned by your degree of professionalism, and they are not obediently "recruiting them"!