There are significant differences between acid and alkali solenoid solenoid heaters and resistance heaters in terms of heating principle, materials used, thermal efficiency and safety.
Heating principle: The acid and alkali liquid electromagnetic heater uses the principle of electromagnetic induction to generate a changing magnetic field through the coil, so that the material in the resistive body generates current eddy currents and generates heat. The resistance heater uses the resistive element to generate electric current, and when the current passes through the resistive element, it will produce a resistive heating effect, so that the resistive element will heat up and transmit it to the surrounding acid and alkali liquid.
Materials used: The resistive body of acid and alkali liquid electromagnetic heater is usually made of materials with high resistivity, such as tungsten, copper-nickel alloy, etc. Whereas, the resistive element of a resistance heater can be a conductive wire or a resistive material.
Thermal efficiency: The acid and alkali liquid electromagnetic heater can heat the acid and alkali liquid more quickly and evenly, which improves the reaction efficiency and product quality. Whereas, resistance heaters are comparatively less thermally efficient because the current flows through the material itself and heats up relatively slowly.
Safety: Acid and alkali liquid electromagnetic heaters usually have high safety performance, because its non-contact heating method is not prone to accidents such as leakage and short circuit. The safety of the resistance heater is relatively low, because it is heated by direct electricity, and if it is used improperly, it is prone to electric shock, fire and other accidents.
In summary, there are significant differences between acid and alkali electromagnetic heaters and resistance heaters in terms of heating principle, materials used, thermal efficiency and safety. In practice, it is necessary to select the right heater type according to the specific needs and scenarios.