How to calculate hot water usage?
When choosing a solar system for hot water, we must first determine our need for hot water, in quantity as well as in preferred temperature. The typical temperature used for calculation is 45°C, but the required quantity must be calculated according to specific daily needs. Hot water usage calculation 1) Residences In family residences, the needs for hot water remain stable during the whole year. An indication for the needs is given by the number of individuals living in the building (or apartment). Usually, the per capita daily consumption of hot water at 45°C is calculated taking into consideration of the following: Low consumption: 35 liters per capita / day Medium consumption: 60 liters per capita / day High consumption: 80 liters per capita / day In the case where we want to connect the solar installation to the washing machine and the dishwasher, we would have to increase the calculated daily needs of consumption as follows: Washing Machine: 20 liters / day (1 wash per day) Dishw
