Hot Air Recycling with Leister

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.- € 

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