Space heaters are electrical heating devices that primarily heat gas streams. The heating element of the air heater is a stainless steel electric heating tube. The inner cavity of the heater is equipped with multiple baffles (baffles) to guide the flow of gas and extend the residence time of the gas in the cavity, so that the gas can be fully Heating makes the gas heat evenly and improves the heat exchange efficiency. The heating element of the air heater is a stainless steel heating tube. An electric heating wire is installed in a seamless steel tube. The gap is filled with magnesium oxide powder with good thermal conductivity and insulation and then the tube is shrunk. When current passes through the high-temperature resistance wire, the heat generated diffuses to the surface of the heating tube through the crystallized magnesium oxide powder, and then is transferred to the heated air to achieve the purpose of heating.

Space heaters use metal to generate eddy currents in an alternating magnetic field to heat themselves. They are usually used in metal heat treatment and other aspects. The principle is that when thicker metal is in an alternating magnetic field, electric current will be generated due to the phenomenon of electromagnetic induction. When thicker metal generates current, the current will form a spiral flow path inside the metal. In this way, the heat generated by the current flow will be absorbed by the metal itself, causing the metal to heat up quickly.

Electric space heaters are mainly used to heat the required air flow from the initial temperature to the required air temperature, which can reach up to 850°C. It has been widely used in many scientific research and production laboratories such as aerospace, chemical industry and universities. The motor starting control box is particularly suitable for automatic temperature control, large flow and high temperature combined systems and accessory testing. The electric air heater has a wide range of use: it can heat any gas, and the hot air produced is dry, moisture-free, non-conductive, pollution-free, safe and reliable, and the heated space heats up quickly (controllable).