After the equipment is installed, how can one determine whether the sheathed electric heater matches the heat transfer oil system reasonably? This requires a comprehensive evaluation from three aspects: medium characteristics, power configuration, and control method.
For ordinary mineral oil working conditions, 304 stainless steel or seamless steel pipe sheaths can be used; if the heat transfer oil contains trace corrosive components, it is recommended to upgrade to 316L stainless steel material to reduce the risk of corrosion leakage. Users should determine the sheath material based on the actual oil product test report.
The HRY21 sheathed electric heater is designed for a working temperature of up to 850°C, suitable for high-temperature heat transfer oil circulation systems. When the medium temperature reaches the process setpoint, the control system, based on the temperature sensor signal, adjusts the output power of the electric heater after PID calculation, achieving temperature control of the resistive load of the heating element.
This heater is commonly used in scenarios such as auxiliary heating of heat transfer oil furnaces, jacket circulation of reactors, and insulation of asphalt storage tanks. When purchasing, it is necessary to provide the medium type, working pressure, interface size, and required thermal power to match the sheath length and wiring method.
