Characteristics and precautions of cast copper heating plates used in heating technology

There are two types of electric heaters commonly used to heat air: duct heaters and duct heaters. These two devices have different characteristics, so how do we choose the right one for our needs?

Let's first look at duct heaters, which are primarily used to heat the air flow from its initial temperature to the desired temperature, with heating temperatures reaching up to 850°C. Currently, this powerful electric heater is widely used in many research and production laboratories, including those in the aerospace, weapons, chemical, and university industries. It is particularly suitable for automatic temperature control and high-flow, high-temperature combined system and accessory testing.

As a typical air heater, duct heaters have a wide range of applications. Not only can they heat any gas, but the hot air they produce is dry, moisture-free, non-conductive, non-flammable, non-explosive, non-chemically corrosive, and non-polluting, making it absolutely safe and reliable.

Next, let's look at duct heaters, which are completely different from duct heaters. They focus on heating air in ducts. Duct heaters can be categorized by temperature range: low-temperature, medium-temperature, and high-temperature.

These three types of duct heaters share structural similarities: they all use steel plates to support the heating tubes to reduce vibration, and all feature over-temperature control devices in the junction box. Regarding heater control, in addition to over-temperature protection, a coupling device must be installed between the fan and heater to ensure that the heater starts only after the fan.

In addition, a differential pressure device should be installed before and after the duct heater to prevent fan failure. The pressure of the gas heated by a duct heater should generally not exceed 0.3 kg/cm². If this exceeds the pressure specification, a circulating electric heater should be used.