Examples
Examples
Try the starting example
- Water mass (kg)
- 60000
- Start temperature (°C)
- 20
- Target temperature (°C)
- 26
- Measured delivered heater output (kW)
- 12
- Ideal required heat (kWh)
- 418.6
- Ideal heating time (hours)
- 34.883333
Try another scenario
- Water mass (kg)
- 66000
- Start temperature (°C)
- 20
- Target temperature (°C)
- 26
- Measured delivered heater output (kW)
- 12
- Ideal required heat (kWh)
- 460.46
- Ideal heating time (hours)
- 38.371667
Calculation method
Calculation method
Ideal required heat (kWh)
Energy=mass×4.186kJ/kgK×deltaT/3600; time=energy/delivered kW.
Ideal heating time (hours)
Energy=mass×4.186kJ/kgK×deltaT/3600; time=energy/delivered kW.
Symbols and units
- a
- Water mass (kg)
- b
- Start temperature (°C)
- c
- Target temperature (°C)
- d
- Measured delivered heater output (kW)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- No ongoing heat loss, evaporation or environmental gain; not a guaranteed heat-up time. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. No ongoing heat loss, evaporation or environmental gain; not a guaranteed heat-up time.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.