Darui Electric recommends
1. Can heat gas to very high temperatures, up to 800°C, with the shell temperature only around 50°C.
2. High efficiency: up to 0.95 or more.
3. Fast heating and cooling rates, up to 10°C/s, with quick and stable adjustment. There is no lead or lag in the controlled gas temperature, preventing temperature control drift, making it very suitable for automatic control.
4. Good mechanical performance: Because the heating element is made of special alloy material, it has better mechanical performance and strength than any other heating element under the impact of high-pressure gas flow. This is particularly advantageous for systems and accessory tests that require continuous gas heating over long periods.
5. Durable and long-lasting, with a service life of several decades when used according to operating procedures.
6. Clean gas and compact size.
7. Multiple types of duct air heaters can be designed according to user needs.
8. Outlet temperature and flow rate are controllable with variable frequency speed regulation.
9. Single unit power ranges from 2KW to 2000KW.
Application range of series duct air heaters: Duct air heaters are widely used heaters, commonly referred to as duct air heaters. Actually, they can be subdivided into many types based on the different heating air applications, all of which can be called duct-type duct air heaters. The control part of the electric heater is a precision instrument; handle with care during transportation, no impact or bumping. The cylinder part should be lifted properly to avoid deformation and damage to internal heating elements. The duct air heater and control cabinet should be stored indoors, protected from rain. When current passes through the high-temperature resistance wire, the heat generated diffuses through crystalline magnesium oxide powder to the surface of the heating tube, then transfers to the heated gas to achieve heating. Working principle of duct air heater: High-temperature resistance wires are evenly distributed inside a high-temperature resistant stainless steel seamless tube, and the gaps are densely filled with crystalline magnesium oxide powder that has good thermal conductivity and insulation properties. This structure is not only advanced and highly efficient but also provides uniform heating. When current flows through the high-temperature resistance wire, the heat generated diffuses through the crystalline magnesium oxide powder to the metal tube surface, then transfers to the heated part or air gas to achieve heating. The duct air heater is mainly used to heat the required gas flow from the initial temperature to the desired gas temperature, up to 800°C.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
