Skip to content 
cartridge heater power calculator
Design your thermal system with precision. Calculate the exact power required for molds, plates, and fluid heating applications.
The Engineering Behind the Result
Calculation Formula
We utilize the standard thermodynamic formula to determine the energy required to raise the temperature of a mass, adjusted for time and efficiency losses.
Cp (Specific Heat Capacity): The amount of heat energy required to raise the temperature of a substance per unit of mass.
Safety Factor: A multiplier (typically 1.2 – 1.4) to account for heat losses through conduction, convection, and radiation.
⚠️ Safety Factor is Crucial
In industrial environments, perfect insulation is rare. A mold sitting on a machine platen loses heat constantly. We recommend a minimum Safety Factor of 1.3 (30% extra power) to ensure you reach operating temperature within your desired timeframe.
⚡ Watch Your Watt Density
Calculating total watts is only the first step. You must ensure the Watt Density (W/cm²) fits your heater size. If the density is too high for the fit/gap, the internal wire will overheat.
Ready to Build Your Heater?
Elekheat manufactures high-precision cartridge heaters tailored to your calculated specifications.
