• Turbine thermal power plant / organic Rankine cycle
  • Turbine thermal power plant / organic Rankine cycle

ORC

Article: 00113004

Turbine thermal power plant / organic Rankine cycle

ORC modules represent an efficient and reliable way to generate electrical power with relatively low temperatures. Since more than a decade such systems operate safely in many places worldwide in a range form a few kW up to 3 MW.

The concept
The Organic Rankine Cycle (ORC) is a thermodynamic process similar to a conventional steam cycle but using a different media to drive the turbine. ORC systems use high molecular organic fluids instead of water.
The organic media is compressed and circulated in a closed loop by a pump. It will be evaporated in a shell and tube heat exchanger by absorbing the thermal heat of the thermal oil primary circuit.
The organic vapour expands in a special designed turbine which drives the electrical generator and will be condensed in another heat exchanger by using a cooling media like water.
The condensate will then be compressed again by the circulation pump, which closes the thermodynamic cycle.
Neither the thermal oil of the primary circuit, nor the cooling water is in direct contact with the organic media.
For high temperature applications it is possible to increase the efficiency by using a regenerator behind the turbine.
In search of further optimization of the overall concept for optimized primary energy efficiency, the advanced partial stream principle was developed.
ORC systems with partial stream principle allow a much better utilization of the exhaust heat in biomass fired combustion systems. Therefore partial stream principle is now a standard for such applications where the electrical power generation has priority compared to heat supply.

Specifications

  • Technology: turbine
  • Cycle: organic Rankine cycle
  • Power: 3000 kW (4023.07 hp)

Other items

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