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tag Operation and maintenance of a biomass fired – Organic Rankine Cycle – CHP plant: the experience of Cremona
Andrea Salogni, Davide Alberti, Massimo Metelli, Roberto Bertanzi
Session: Poster session & Welcome drinks
Session starts: Wednesday 13 September, 17:30



Andrea Salogni (Linea Energia)
Davide Alberti (Linea Energia)
Massimo Metelli (Linea Energia)
Roberto Bertanzi (Turboden)


Abstract:
Thanks to various feed-in-tariff programs, aimed to the development of the renewable energy production, several biomass firing power plants had been realized in Italy in the last few years, contributing to the reduction of greenhouse gas emissions and fossil fuel energy dependence. In particular, during 2012 there was a rush for the completion of several renewable energy conversion power plant, leading up to 986 new plants to get the first connection to the grid (+81,3% with respect to 2011); among those, 80 new plants were solid biomass firing plants (+47,1% with respect to 2011). Linea Energia S.p.A., the Energy Business Unit of the multiutility company LGH, Linea Group Holding, which operates over the area of Brescia, Cremona, Crema, Lodi and Pavia, gave its contribution in 2012 with the realization and start-up of two waste wood fuelled energy conversion plants located in the Northern Italy, more exactly in Cremona and around Brescia. This paper focuses on the operation and maintenance experience of the waste wood conversion power plant of Cremona, which is capable for a gross electric power production of up to 1.0 MW and a thermal power recovery of up to 5.5 MW. In the first part of this paper, a detailed description of the plant is presented, giving an insight of the engineered process. In the second part, the performance analysis of the energy conversion process is discussed by comparing actual performance of the system with the originally defined reference performance. As a consequence of the operation of the unit in anomalous conditions (air entering in the system) the output of the turbine decreased but was then successfully re-established after an extraordinary maintenance carried out by the turbine supplier.