Tubular Electric Heater
A tubular electric heater is made by placing a metal resistance wire inside a metal tube and tightly filling the gaps with crystalline magnesium oxide, which has good thermal conductivity and insulation properties. It can be immersed in water or other liquids, or directly placed in solid metal to heat the metal. Due to its simple structure, high thermal efficiency, good mechanical strength, safety, reliability, lightness, and durability.
Currently, it is widely used in China's aviation industry, shipbuilding industry, petroleum industry, chemical industry, and daily-use industries, such as in saltpeter tanks, water tanks, various oil tanks, acid-base heating devices, fusible metal melting furnaces, air heating furnaces, drying ovens, various molds and pressing dies, electric irons, steamers, cookers, etc.
The tubular electric heater consists of a metal tube, a spiral resistance wire, and electrical-grade magnesium oxide powder with good thermal conductivity and insulation, as well as terminal leads, etc.
