Question: How should the power and heat dissipation conditions of a protective sleeve electric heater be matched during design selection?
Answer: The heating power needs to be calculated based on the medium flow rate, temperature rise requirements, and heat dissipation conditions. If the power is too high, the surface temperature may exceed the allowable range of the medium; if the power is too low, the set temperature cannot be reached. It is recommended to reserve a 10%-20% margin based on the calculated heat load under actual working conditions, and to verify the voltage level and wiring method.
Regularly check whether the wiring terminals are loose, remove attachments on the surface of the protective sleeve, and avoid poor local heat dissipation. During shutdown periods, disconnect the power supply to prevent accidental startup. If a decrease in insulation resistance is found, promptly check whether the heating element is damp or aged.
The installation location should avoid areas susceptible to mechanical impact, and ensure that the protective sleeve is in full contact with the medium. For liquid heating scenarios, the heater must be fully immersed to prevent dry burning. Different media (such as oil, water, and air) have greatly different heat transfer characteristics, so the medium type and working pressure range should be clearly defined during selection.
This product has a wide range of applications and, under reasonable selection and standardized maintenance conditions, has a long service life and high operational reliability.
