France-based company Cryostar has built a 13 MW ORC turbo-generator which is now in commercial service.
The product was designed to be integrated into a heat-to-electricity conversion process known as the ‘Organic Rankine cycle’. The turbine expands R134A refrigerant fluid.
The process was developed by the American company TAS Energy and uses a geothermal heat source to produce electricity transferred for transmission to the grid. The geothermal power station located in Turkey is operated by Zorlu.
The TG800 turbines range was designed to develop up to 19 MW of power, it includes an 800mm titanium wheel and is a radial centripetal turbine with variable blading. This technology makes it possible to optimise the machine’s output for an extended operating range, which is the best solution to maximise annual electricity production.