# Heating tube power calculation formula

- May 06, 2019-

1. The heat pipe is a purely resistive load, its power = voltage × current

The relationship between active power and current and voltage in a single-phase AC circuit is: P=U×I

When the formula is used in a purely resistive circuit, it can be written as: W=V×A

formula:

W——the unit of calculation of the active power P;

V——the unit of calculation of the voltage;

A - the unit of calculation of the current.

2. The relationship between current and power of three-phase four-wire 380/220 symmetrical pure resistive load is:

P=I÷1.44 / I=P×1.44

3. Heating tube triangle connection power calculation formula:

Current intensity: I=U/R=380/18=21.1 amp;

Total power: P = 3 * U ^ 2 / R = 3 * 380 * 380 / 18 = 24066.7 watts.

4. Heating tube star connection power calculation formula:

Current intensity: I=U/R=220/18=12.2 amp;

Total power: P = 3 * U ^ 2 / R = 3 * 220 * 220 / 18 = 8066.7 watts.

Tips: heat pipe letter meaning P: electric power U: voltage I: current W: electric work R: resistance T: time