Steam – organic working fluid

Steam rankine cycle

Thermodynamic features and consequences

  • High enthalpy drop
  • High pressures and temperatures
  • Superheating needed
  • Risk of blade erosion

Operation and maintenance costs

  • Water treatment required
  • Highly skilled personnel needed

Other features

  • Low flexibility with significantly lower performances at partial load
  • Convenience for large kilns and systems with low raw material water content

Organic rankine cycle

Thermodynamic features and consequences

  • Small enthalpy drop
  • Low pressure and temperatures
  • No need to superheat
  • No risk of blade erosion

Operation and maintenance costs

  • Water-free system
  • Minimum personnel and fully automatic system

Other features

  • High flexibility
  • High availability (average >98%)
  • Well-matched with small- to medium-size, high-efficiency kilns or kilns with elevated raw material moisture content