Calculation of expenses for heating water

How much kWh of energy is spent on heating the water

Cold water temperature, °C: = °C * Tap water: in winter 4-8 ° C, in summer 16-18 ° C

Heated water temperature, °C: = °C * For comfortable washing you need 35-40 ° C, boiling point 100 ° C

Volume or mass of heated water, l or kg: = liters (kg) * For water, the volume in liters is equal to the mass in kilograms, and 1 cubic meter = 1000 liters

Heaterefficiency, %: = % * Coefficient of performance: e. kettle 95-98%, water heater 95-99%, electric stove 50-70%

Electricity consumption for heating: kWh ( kj)

Energy goes exclusively to heating: kj ( Gcal)

Energy efficiency loss: kj ( Gcal)

How long does the water heat up

Heater power, kW:

= kW ( W) Heating time: h min sec (or h)