The control section of the air heater is a precision instrument and should be handled with care during transportation, avoiding impacts and blows. The cylinder section should be properly hoisted to prevent deformation and damage to the internal heating elements. The air heater and control cabinet must be stored indoors and are strictly prohibited from being exposed to rain.

Equipment Maintenance

Fault 1: Digital display not functioning.

Check if the circuit breaker is engaged and the control circuit is intact.

Issue Two: Heater temperature is not rising.

Are the circuit breakers in good condition, and are the air heaters damaged?

Fault Three: Three-phase Unbalance.

Check if the three-phase incoming line voltage is missing a phase.

(2) Open the air heater's protective cover and use a multimeter to check if the individual heating elements are open-circuited.

For malfunctions that cannot be resolved independently, it is advisable to seek the assistance of a skilled technician (or consult the manufacturer).

Influencing Factors

Increasing the gas inlet flow rate of the air heater can enhance the convective heat transfer of the air electric heater, thereby reducing the surface temperature of the electric heating elements inside the air heater. This not only benefits the extended lifespan of the air heater's electric heating elements but also decreases the heat dissipation loss of the air electric heater, thus improving its efficiency. However, if the speed is too high, it causes a sharp increase in pressure loss, which is detrimental to the enhancement of heating efficiency.

If all other conditions remain unchanged, altering the surface load will cause the wall temperature of the electric heating elements in the air heater to change linearly. An increase in surface load will raise the wall temperature of the electric heating elements, which will decrease their service life in the air heater. However, if the surface load is too low, resulting in an excessively low wall temperature, the efficiency of the heat exchanger in the air heater will decrease as well. Therefore, the selection of surface load for the electric heating elements in the air heater is quite important.

As the final air temperature T2 in the air heater increases, the viscosity of the air rises, leading to a decrease in the gas Reynolds number, which in turn reduces the intensity of convective heat transfer. Concurrently, the surface temperature of the electric heating elements in the air heater also rises, causing an increase in heat loss due to the infrared carbon sulfur analyzer, thereby lowering the efficiency of the heat exchanger. When T2 increases excessively, the surface temperature of the electric heating elements can also rise significantly, making it impossible for standard electric heating elements to withstand the heat. Therefore, the increase in T2 is typically limited by the heat resistance of the material used in the electric heating elements within the air heater.