What is the impact of the load on electric heating tubes

What is the impact of the load on electric heating tubes

1, Heat load:

Heat load is one of the important indicators for designing electric heating elements. Mainly refers to the heat converted by the surface area of an electric heating tube per unit time. The thermal efficiency gradually decreases with the decrease of load. The lower the load, the faster the thermal efficiency decreases. Therefore, an appropriate heat load is more conducive to the operation of the equipment. From an economic perspective, it can save costs.

2, The expression method for heat load intensity:

1. External load: Suitable for spiral heating elements and strip heating elements. The external load of general metal tubular electric heating elements is 1-25/W.cm2.

2. Area current: Suitable for strip heating elements.

3, Thermal load intensity of electric heating tubes:

1. The selection of corrosive media should have a lower geothermal load based on actual use.

2. The shape of electric heating materials can generally be divided into strip and wire. The heat load of the strip is 20% -50% higher than that of the wire. Generally, the electric heating wire inside the electric heating tube uses spiral wire.

3. The heat load is also different: it can generally be divided into medium low temperature, high temperature, ultra-high temperature, and the higher the temperature resistance, the greater the heat load. Alloy composition: Depending on the composition of the electric heating wire selected inside the electric heating tube.

4. Maximum operating temperature: The higher the operating temperature of the heating element, the lower the relative heat load selected. The opposite is also true.

5. Installation method: As an embedded electric heating element, the electric heating tube should be selected with a lower heat load intensity.

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