The Comparison
Sample calculation showing the potential of energy savings due to hot air recirculation.
Based on:
- 24-hour operation
- 250 days per year
- T1=inlet= 20°C
- •or T1= 160°C
- •or T1= 350°C
- T2=target = 500°C
Example 4000 l/min
Annual energy consumption @
T1 = 20°C à 232’300 kWh
Required Power 38.7 kW
T1 = 160°C à 164’600 kWh
Required Power 27.4 kW
T1 = 350°C à 72’600 kWh
Required Power 12.1 kW
Saving per year T1 = 350°C vs. T1 = 20 °C
= 159.723 kWh
@ 0.12€/kWh à savings = 19‘152.- €