How to calculate the surface load of the electric heating tube? The surface load of the electric heating tube is the power per unit area on the heating surface of the heating tube.
Electric heating tube surface load calculation formula:
Electric heating tube surface load (w/cm2 (watt density)) = W (electric heating tube power)/D × π × L(cm)
Among them, D = the diameter of the heating tube; (π = 3.1416); (L = the length of the heating part);
It should be noted that L is the heating length, not the total length of the electric heating tube, because each heating tube will have a heating length and a cold zone.
How to calculate the surface load of the electric heating tube
How to calculate the current of the electric heating tube:
Look at the power and voltage indicated on the heating tube or package, current=power/voltage
Electric heating tube power calculation:
1. Empirical calculation-P = actual current / 1.5 = 78/1.5 = 52 kilowatts; 2. Formula calculation-P = IU, P = √3UxIx, where Ux is the line voltage, Ix is the line current, P=√3UxIx= √3×380×78≈52 kilowatts. 11 Electric power P is equal to the square of current into resistance P=IIR (General formula) Electric power is equal to current multiplied by voltage P=UI=380V×78A=29640W4
How to calculate the diameter of the heating wire of the electric heating tube?