The air heater is mainly used to heat the required air flow from the initial temperature to the required air temperature. It has been widely used in many scientific research and production laboratories such as aerospace, weapon industry, chemical industry and universities. It is especially suitable for the test of automatic temperature control and large flow high temperature combined system and accessories. The electric air heater can be used in a wide range: it can heat any gas, and the generated hot air is dry and moisture-free, non-conductive, non-burning, non-explosive, non-chemically corrosive, non-polluting, safe and reliable, and the heated space heats up quickly Controllable.
In recent years, the power of air heaters has gradually increased, and the energy-saving effect is obvious, some up to 400KW. Although the temperature is increasing and the application in many industries is increasing, many users report that the air heater will produce vibration during the application process, and the vibration will increase the abrasion of the air heater’s pipes and baffles, resulting in air Damage to the heater.
We can change the impact of vibration on the air heater by the following methods:
1. Reducing the flow speed can be achieved by increasing the tube center distance.
2. Increasing the wall thickness is also a measure to improve the vibration of the air heater. This method is basically to change the natural frequency of the air heater pipe, thereby reducing the resonance caused by the vibration. We can also change the diameter of the pipe.
So how to reduce the pressure loss of the air heater itself?
1. The increase of air temperature of the air heater and reasonable design.
2. Reduce the pressure loss of the air heater itself. The air that needs to be heated flows through the air heater and generates pressure loss. The pressure loss is large, the energy consumption of the fan is also greater, innovation, from the structural improvement of the air heater itself, with the smallest pressure loss.
3. An air heater should be added to the surface of the insulating layer. In the use of air heaters, heat preservation is only in the outlet pipe of the electric heater, and there is no heat treatment on the heater surface itself. Comparative data shows that adding a thermal insulation layer can reduce energy consumption by 5% to 10%. Long-term operation on the surface of the air heater is very important to save energy consumption. At the same time, an insulation layer should be installed in the pipeline, and the insulation layer should be set on the air heater.
