2022 Shanghai Gongtao 110 Volt Industrial Electric Stainless Steel Resistance Immersion Water Rod Heater Heating Tube for Boiler

Power and surface load of heater tube calculation:

Surface load refers to the electric power value taken on a unit superficial area of the heating element. A higher surface load strength typically results in a shorter lifespan but reduced material wastage. It is essential to choose the heating load strength reasonably to ensure high thermal efficiency and durability.

• Basic data for calculation: Highest use temperature t (C), Heating electric power P (W), Working voltage U (V), and Length of heating zone L(m).
• Material Confirmation: Confirm the electrothermal alloy brand based on basic data and working conditions.
• Coefficient Check: Refer to known data for the coefficient of correction Ct of resistance temperature.
• Total Resistance: Calculate using the formula R = U² × Ct / P.
• Diameter Estimation: Work out resistance per meter (Rm = R/L) to determine the material diameter (D) and total area (FO).
• Surface Load Gain: Calculated by ω = P/FO. Note: Currently, the surface load for these heater tubes should generally not exceed 2.0W/cm² to maintain material integrity.