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*Note:
1. This calculation tool is for reference only. Please verify the results and make necessary adjustments.
2. The user takes responsibility for any issues or damages from using the tool.
★ Power calculation
★ Air heating calculation
★ Water heating calculation
★ Ohms law calculation
★ Three-phase star connection
★ Three-phase triangle calculation

★ Heat calculation: Power calculation

Enter the values and then click [Calculate]

Capacity required to raise the temperature of the object

 Mass of object to be heated - A: kg Specific heat of the object to be heated - B: J/kg ℃ Required temperature rise - C: ℃ Temperature rise time - D: Hour Required capacity - E: W

To raise the temperature of an object A [kg] with a specific heat B [J/kg °C] by C [°C] in D [hours], a Power of E [W] is required.

Power required for melting or evaporating the object

 Mass of object to be heated - A: kg Heat of melting or evaporation of the object to be heated - B: kJ/kg Time to melt or evaporate - C: Hour Required capacity - D: W

In order to melt or evaporate an object A [kg] with heat of fusion or heat of evaporation B [kJ/kg] in C [time], a Power of D [W] is required.

★ Heat calculation: air heating power calculation

Value at 1atm (1013.3hPa). It can be calculated from -100 ℃ to 1600 ℃.

Enter the values and then click [Calculate]

The Power required to raise the temperature of a volume of air

 Volume of air to be heated - A: m3 Temperature before heating - B: ℃ Temperature after heating - C: ℃ Temperature rise time - D: Hour Air mass - E: kg Air volume after heating - F: m3 Required Power - G: W

In order to raise the temperature of air with volume A [m3] and temperature B [°C] to C [°C] in D [hours], a Power of G [W] is required.

Power required to raise the temperature of a certain mass of air

 Mass of air to be heated - A: kg Temperature before heating - B: ℃ Temperature after heating - C: ℃ Temperature rise time - D: Hour Air volume before heating - E: m3 Air volume after heating - F: m3 Required capacity - G: W

G [W] Power is required to raise the temperature of air with mass A [kg] and temperature B [°C] to C [°C] in D [hours].

★ Heat calculation: Water heating capacity calculation

Enter the values and then click [Calculate]

Power required to raise the temperature of a certain mass of water (ice / steam)

Value at 1atm (1013.3hPa). Water temp: 0℃~100℃ / Ice temp: ≤0℃ / Steam temp: ≥100℃。

Calculated range: -200℃ to 300℃

 Mass of water to be heated - A: kg Temperature before heating - B: ℃ Temperature after heating - C: ℃ Temperature rise time - D: Hour Before heating: After heating: Required capacity - E: W

Water (ice / steam) with mass A [kg] and temperature B [°C] is converted to C [°C] in D [hours].

To raise the temperature, E [W] Power is required.

Ice → water has “heat of melting (334kJ / kg)”

For water → steam, “heat of evaporation (2257kJ / kg)” is required.

Simple calculation including heat dissipation loss when heating water in a container

Calculated range: 0℃ to 100℃

 Container lid: No  Yes Container insulation: No  Yes Mass of water to be heated - A: kg Temperature before heating - B: ℃ Temperature after heating - C: ℃ Temperature rise time - D: Hour Required capacity - E: W Heat dissipation loss - F: % Heat dissipation at water temperature C - G: W

In order to raise the temperature of water with mass A [kg] and temperature B [° C] to C [° C] in D [hours], a Power of E [W] is required, of which F% is the heat dissipation loss.

The heat loss depends on the heating conditions, the results should be used for reference purposes only.

Conditions for simple calculation

• The room temperature remains constant before heating, and the effects of wind are neglected.

• The container is a metal cubic one with its top exposed to air.

• The container is covered with insulation material.

• The thickness of the insulation material is 50mm.

★ About heater: Ohms law calculation

Enter two values and click [Calculate] to determince the other two

Single phase heater

 Voltage E Current I Resistance R Electric power W V A Ω W Calculation result: V A Ω W

The resistance temperature coefficient varies with temperature during the heating process.

At lower temperatures, the resistance (R) is smaller.

Three phase heater

 Voltage E Current I Resistance R Electric power W V A Ω W Calculation result: V A Ω W

The resistance temperature coefficient varies with temperature during the heating process.

At lower temperatures, the resistance (R) is smaller.

★ About heater: Calculation of three-phase star connection

Enter the power supply voltage and the resistance of each load, click [Calculate] to calculate current, power, and total power.

 Power-supply voltage E: V Resistance value Ra: Ω Resistance value Rb: Ω Resistance value Rc: Ω Current Ia: A Current Ib: A Current Ic: A Ra power: W Ra power: W Ra power: W Total power W: W

★ About heater: Calculation of three-phase delta connection

Enter the power supply voltage and the resistance of each load, click [Calculate] to calculate current, power, and total power.

 Power-supply voltage - E: V Resistance value - Ra: Ω Resistance value - Rb: Ω Resistance value - Rc: Ω Phase current - Iba: A Phase current - Icb: A Phase current - Iac: A Current - Ia: A Current - Ib: A Current - Ic: A Power - Ra: W Power - Rb: W Power - Rc: W Total power - W: W

 Power-supply voltage - E: V Power - Ra: W Power - Rb: W Power - Rc: W Resistance value - Ra: Ω Resistance value - Rb: Ω Resistance value - Rc: Ω Phase current - Iba: A Phase current - Icb: A Phase current - Iac: A Current - Ia: A Current - Ib: A Current - Ic: A a-b resistance: Ω b-c resistance: Ω a-c resistance: Ω
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