Duct heaters are mainly used for heating air in ducts. They are available in three specifications: low temperature, medium temperature, and high temperature. A common structural feature is the use of steel plates to support the heating tubes to reduce vibration when the fan stops. All junction boxes are equipped with over-temperature control devices. The low-temperature type can be directly installed on the duct, while the medium-temperature and high-temperature types, due to structural differences, have a 100mm thick insulation material sandwiched between the outer wall of the duct and the heater junction box. This reduces heat dissipation from the entire duct and also lowers the temperature inside the junction box.100mm thick insulation material, which reduces heat dissipation from the entire duct and also lowers the temperature inside the junction box.
Principle of Duct Heater:
Duct heaters are mainly used to heat the required air flow from the initial temperature to the desired air temperature, up to500°C.
Structure of Duct Heater:
