The working principle of the air heater in detail

The air heater is a highly efficient, energy-saving heating device that is widely used in a number of industrial fields. Its basic working principle is to heat the air through the heating device, the heat will be delivered to the designated area, so as to achieve the air temperature regulation. Air heaters have a variety of heating methods, common electric heating and gas heating methods, are known for high efficiency, low pollution and strong stability and other characteristics.

The core heating principle of the air heater

The core heating principle of an air heater is the use of internal heating elements (e.g. electric heaters) to convert electrical energy into heat. The electric heating element generates heat when it is energised, which is then transferred to the air flowing through the equipment by convection or conduction, thereby raising the temperature of the air. In the case of gas-fired heating methods, the heat generated by the combustion of the fuel passes through a heat exchanger for secondary heating to bring the air to a predetermined temperature. The materials of these heating elements are usually high-temperature resistant alloys to ensure good thermal conductivity and durability even in high-temperature environments.

Key components of air heaters

1. electric element: It is mainly responsible for converting electrical energy into thermal energy, and the amount of its heating power determines the rate of warming and the temperature range of the air heater.
2. Fans and Ducts: Ensure smooth air circulation so that the heated air is delivered evenly to the target area for optimal heating.
3. temperature control system: For precise control of the heating temperature, ensuring that the air temperature is within the preset range and improving energy efficiency and avoiding overheating.
4. insulation: Avoid heat dissipation and improve heating efficiency, while protecting the equipment shell from the effects of high temperatures on other parts of the equipment.

How different air heater types work

• Electrically heated air heaters: Uses the heating characteristics of an electrically heated element when energised to heat air. Electrically heated air heaters generally have the advantage of rapid temperature rise and precise temperature control, making them ideal for industrial applications with high temperature requirements.
• Gas Air Heater: Air is heated by the heat generated by the combustion of the fuel, and these heaters are mostly used in larger-scale heating environments, where the combustion of the gas causes the air to warm up quickly, making them suitable for large-scale, continuous heating.
• Hot Oil Air Heater: The air is heated by circulating thermal oil, which is heated in the heater and then conducts the heat in a circulating system. This type of equipment has better temperature control and is suitable for applications requiring constant temperature heating.

Application Scenarios for Air Heaters

Air heaters are used in a wide range of applications due to their efficient and stable heating performance:

• industrial manufacturing: For ambient temperature control in workshops or drying processes to ensure product quality.
• food processing industry: For drying and baking of foodstuffs.
• Chemical industry: For heating or drying of materials to meet process requirements.
• Environmental protection: Commonly used in exhaust gas heating treatment to enhance the combustion rate of pollutants to meet environmental emission standards.

Precautions for installation and use

When installing air heaters, it should be ensured that the equipment is installed in a well-ventilated location to avoid excessive concentration or accumulation of heat, which may affect the service life of the heater. In addition, attention should be paid to adjusting the temperature control system during operation and regularly checking the status of the electric heating element to ensure that it maintains good heating effect and stability.

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Analysis of the various application scenarios of air heaters - Jiangsu Ruiyuan Heating Equipment Technology Co.