Duct-type explosion-proof electric heater application fields - Yangzhou Darui
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The air electric heater is mainly used to heat the required air flow from the initial temperature to the required air temperature, up to 850°C. It has been widely used in many scientific research and production laboratories such as aerospace, weapon industry, chemical industry, and higher education institutions. It is especially suitable for automatic temperature control and high-flow high-temperature combined systems and accessory tests. The air electric heater has a wide range of applications: it can heat any gas, producing hot air that is dry, non-conductive, non-combustible, non-explosive, non-corrosive, non-polluting, safe and reliable, and the heated space heats up quickly (controllable).
It is mainly used for heating air in ducts. The specifications are divided into three types: low temperature, medium temperature, and high temperature. The common structural feature is the use of steel plates to support electric heating tubes to reduce vibration of the tubes. The junction box is equipped with an overtemperature control device. In addition to overtemperature protection, a linkage device must be installed between the fan and the heater to ensure that the heater starts only after the fan starts. A differential pressure device should be added before and after the heater to prevent fan failure. The gas pressure heated by the duct heater generally should not exceed 0.3 Kg/cm2. If the pressure exceeds the above specification, please choose a circulating electric heater. The maximum heating temperature for low-temperature heaters does not exceed 160°C; for medium-temperature heaters, it does not exceed 260°C; for high-temperature heaters, it does not exceed 500°C.
Technical Features
1. Can heat air to very high temperatures, up to 450°C, with the shell temperature only around 50°C.
2. High efficiency: up to 0.9 or more.
3. Fast heating and cooling rates, up to 10°C/s, with stable and rapid adjustment. There is no lead or lag in the controlled air 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, under the impact of high-pressure air flow, its mechanical performance and strength are better than any other heating element, which is especially advantageous for systems and accessory tests that require continuous air heating over long periods.
5. Durable and long-lasting, with a service life of up to several decades when used in accordance with operating procedures.
6. Clean air and small size.
7. Multiple types of air electric heaters can be designed according to user needs.
IV. Specifications and Models
V. Explosion-proof grade: ExdⅡBT1-6 ExdⅡCT1-6
Single unit power ranges from 2KW to 10000KW.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
