KW to Heat Water Calculator

Formula

The formula to calculate the power required to heat water (P) is:

$P = \frac{V \times \Delta T \times C}{t \times 3600}$

Where:

$P$ is the power required (kW)
$V$ is the volume of water (liters)
$\Delta T$ is the temperature rise (°C)
$C$ is the specific heat capacity of water (4.186 J/g°C)
$t$ is the time (hours)

What is KW to Heat Water?

KW to heat water is a measure of the energy rate required to raise the temperature of a given volume of water by a certain degree over a specified period. It is an important calculation in designing heating systems, such as water heaters and boilers, to ensure they have sufficient power to meet the heating demands.

Example Calculations

Let's assume the following values for two examples:

Example 1:

Volume of Water (V) = 100 liters
Temperature Rise (ΔT) = 50 °C
Time (t) = 2 hours

Using the formula:

$P = \frac{100 \times 50 \times 4.186}{2 \times 3600} \approx 2.91 \, \text{kW}$

The Power Required is approximately 2.91 kW.

Example 2:

Volume of Water (V) = 200 liters
Temperature Rise (ΔT) = 30 °C
Time (t) = 1 hour

Using the formula:

$P = \frac{200 \times 30 \times 4.186}{1 \times 3600} \approx 6.98 \, \text{kW}$

The Power Required is approximately 6.98 kW.