The formula to calculate the size of a water heater needed is:
\[ \text{HS} = \left( \text{N} \times \text{T} \times \text{G} \right) / \text{R} \]
Where:
A water heater size refers to the capacity of a water heater to hold and heat a certain amount of water, typically measured in gallons in the United States. The size of the water heater you need depends on the number of people in your household and your peak water usage. Larger households or those with high hot water demand (such as multiple showers running simultaneously) will require a larger water heater. It’s important to choose the right size to ensure a sufficient supply of hot water without wasting energy on heating more water than needed.
Let's assume the following values:
Step 1: Multiply the number of people by the average time of each shower and the gallons of water used per minute:
\[ 4 \times 10 \times 2.5 = 100 \]
Step 2: Divide the result by the recovery rate:
\[ \frac{100}{40} = 2.5 \]
Therefore, the heater size needed is 2.5 gallons.
Let's assume the following values:
Step 1: Multiply the number of people by the average time of each shower and the gallons of water used per minute:
\[ 3 \times 8 \times 2 = 48 \]
Step 2: Divide the result by the recovery rate:
\[ \frac{48}{30} = 1.6 \]
Therefore, the heater size needed is 1.6 gallons.