How to determine the power required by the water tank?

Customers often ask that they want to heat the tap water in the water tank, but they don’t know how much power is needed to boil the water. How to determine the power required for the water tank?

First, some parameters need to be determined

1. How many cubic meters is the volume of the water tank (length, width, and height respectively);

2. The temperature of the water is from how many degrees to how many degrees (temperature difference);

3. How long does it take to raise the water temperature;