Industrial Hot Air Power Calculator
Instantly calculate the required heating capacity (kW) for your thermal drying system, curing oven, or air knife blow-off loop. Optimize your energy consumption with CHANGESO engineering tools.
Power Selection
How to Calculate Heating Power for Hot Air Generators
This calculator determines the required electrical heating power based on airflow and the desired temperature rise (ΔT). The underlying thermal engineering formula used by CHANGESO is:
- Air Volume (m³/h): The total airflow delivered by your regenerative blower or centrifugal fan.
- Temperature Rise (ΔT): The difference between the target outlet temperature and the initial inlet temperature.
- Constant 3000: The standard specific heat and air density conversion factor used in aerodynamic thermal sizing.
- 0.95 Efficiency: Represents the 95% extreme thermal efficiency achieved by CHANGESO insulated heating chambers.
Thermal Engineering FAQ
Example: How much power is needed to heat 1200 m³/h from 180°C to 230°C?
Using the formula, the temperature rise is 50°C (230 – 180). Multiplying 1200 m³/h by 50 equals 60,000. Dividing this by (3000 × 0.95) results in exactly 21.05 kW. Our calculator would therefore recommend the CHANGESO HAM-R30A Series to comfortably handle this thermal load.
Why does higher Inlet Temperature reduce required kW?
This is the core principle of our HAM-R Re-flow Series. By recirculating pre-heated hot air (e.g., intaking air that is already 180°C from a closed-loop oven) instead of heating cold room-temperature air (20°C), the required Temperature Rise (ΔT) is drastically reduced. This thermal recycling process saves industrial facilities up to 50% in electricity costs.