Domestic hot water

The calculation checks whether the comfort level is maintained for a worst case scenario day (= day with a lot of hot water consumption).

Users determine the worst-case scenario themselves using the following settings:

• number of showers, baths, ... taken per day
• times of the day when the peaks occur
• water temperature that must come out of the shower as a minimum (e.g. 40°C)

The result is a graph with the hours of the day on the X axis and the energy available in the storage tank on the Y axis.

The blue line is the consumption curve and here we see a first peak in consumption in the morning around 7 am.

If the red line rises, the storage tank is heated and if the red line falls, it cools down.

Details on sizing domestic hot water storage tanks can be found in this instructional video.