The heating cores of stainless steel heating elements and copper heating elements are both made of internationally stable nickel titanium alloy heating wires, with the only difference being the materials used for the exterior and interior. The characteristics of stainless steel: higher hardness than copper, less prone to deformation, alkali resistance but not acid resistance. Because most of our domestic water is alkaline, it is extremely difficult to be oxygenated. The heating elements on the current market are divided into two categories: metallic heating elements and non-metallic heating elements.
. When working, the heating tube is completely immersed in water, and thanks to the superior conductivity of the metal tube, heat exchange is completed quickly, with an unparalleled heat rate.
The use of metal heating elements in electric water heaters has a history of the last century, and this type of heating element has the most mature technology and stable performance.
The characteristics of purple copper: it is soft and easy to stretch into shape, acid resistant but not alkaline resistant. Because most of our daily water is alkaline (the alkalinity is greater in coastal areas), it is easy to oxidize and produce copper rust. When heated at high temperatures, corrosion is more severe, and it is easily broken down by high temperatures, leading to leakage. Metal heating elements include stainless steel, copper, etc; Non metallic heating elements include quartz test tubes, ceramics, etc.
The office principle of instant electric water heaters and fast electric water heaters has decided that the key to quality lies in the core components - the heating element, and the key to the quality of the heating element lies in the selected material. Low thermal energy consumption rate, average heating, good pressure resistance, and good heat expansion and contraction resistance. The inner liner has poor pressure resistance and is prone to cracking at high temperatures.