Operation of the Siemens SOFC Generators CHP100 and SFC5 in a Workshop

  • Massimo Santarelli, Politecnico di Torino, Italy
  • Ferrante De Benedictis, TurboCare SpA, Italy
  • Marcello Gariglio, Politecnico di Torino, Italy
  • Michele Calì, Politecnico di Torino, Italy
  • Giovanni Disegna, TurboCare SpA, Italy
  • Gianmichele Orsello, TurboCare SpA, Italy
  • TurboCare started in 2004, with Politecnico and Envipark of Torino, an applied research and demonstration activity in Stationary Fuel Cells based on SOFC technology.

    In 2005 TurboCare installed the CHP100, a generator designed and built by Siemens Westinghouse in 1997. It is rated 100 kWe and 60 kWth and it was operated in USA, Holland and Germany for 20,400 hours until 2002.

    The CHP100 is fuelled by natural gas, and it is connected to the workshop grid (400 V). It supplies an average of 27% of the electricity demand of TurboCare mechanical workshop, and part of the energy required for heating and air conditioning of the offices. In weekends and vacation days a small portion of the produced power is exported to the municipal grid.

    The generator has shown the record availability of 99.1% with more than 16,400 hours of operation in Torino.

    Electrical efficiency was demonstrated to be 42-44% and total efficiency 70-80%. Summing up the run hours in the previous installations, the CHP100 has totalled more than 36800 hours.

    High fuel utilization (80%), extremely low pollutants emission, saving on CO2 emissions, very low noise and highly reliable operation, negligible fuel cells voltage degradation are demonstrated in this testing.

    Since 2006 TurboCare is also running a SFC5 sofc generator, a prototype designed to supply Combined Heat and Power to residential houses or small business. It produces 3.5 kWe and 3 kWth. To date, it has operated in the workshop canteen for more than 9,000 hours with very high reliability.