Electric Heating Tube ParametersIt is an electric heating tube with double-ended leads, using a metal tube as the protective shell (including stainless steel, copper tube, various imported steel), along the central axis of the tube evenly distributed spiral high-quality electric heating alloy wire (nickel-chromium, iron-chromium alloy heating wire), and the gaps are tightly filled with crystalline magnesium oxide powder with good heat resistance, thermal conductivity and insulation. The tube ends are sealed with silicone and processed through other processes. This heater has the characteristics of simple structure, high mechanical strength, high thermal efficiency, safety and reliability, easy installation, and long service life. With its strong advantages, it is widely used for air heating, metal molds, and various liquid heating. It is divided into U-shaped electric heating tubes, double-U flange-mounted electric heating tubes, threaded electric heating tubes, double-ended finned electric heating tubes, double-ended waterproof electric heating tubes, water heater heating tubes, etc.
Calculation of heating value
A voltage regulator can be used to change the heating value by varying the input voltage and current.
The heating value is proportional to the square of the voltage and the square of the current.
When the voltage is halved, the heating value becomes 1/4.
When the current is halved, the heating value also becomes 1/4.
How to verify the electric heating tube
The most intuitive way to verify the quality of an electric heating tube is: first wipe the surface of the tube clean, then connect it to an AC 220V power supply and dry burn it in the air. After the surface turns red, cut off the power. When the tube is completely cooled, wipe it with a napkin. There should be no black oxide powder (no reaction with oxygen in the air) on the white paper, indicating it is a good electric heating tube.
Carbon fiber heating element is the most competitive high-tech material in this century. Its emergence has sparked a new revolution in the electric heating field. The replacement of metal heating elements by carbon fiber heating elements will become an inevitable trend.
