| Title | The "INNOVARE" Project: Innovative Plants for Distributed Poly-Generation by Residual Biomass |
|---|---|
| ID_Doc | 15682 |
| Authors | Costa, M; Buono, A; Caputo, C; Carotenuto, A; Cirillo, D; Costagliola, MA; Di Blasio, G; La Villetta, M; Macaluso, A; Martoriello, G; Massarotti, N; Mauro, A; Migliaccio, M; Mulone, V; Murena, F; Piazzullo, D; Prati, MV; Rocco, V; Stasi, A; Vanoli, L; Cinocca, A; Di Battista, D; De Vita, A |
| Title | The "INNOVARE" Project: Innovative Plants for Distributed Poly-Generation by Residual Biomass |
| Year | 2020 |
| Published | Energies, 13, 15 |
| Abstract | The valorization of residual biomass plays today a decisive role in the concept of "circular economy", according to which each waste material must be reused to its maximum extent. The collection and energy valorization at the local level of biomass from forest management practices and wildfire prevention cutting can be settled in protected areas to contribute to local decarbonization, by removing power generation from fossil fuels. Despite the evident advantages of bioenergy systems, several problems still hinder their diffusion, such as the need to assure their reliability by extending the operating range with materials of different origin. The Italian project "INNOVARE-Innovative plants for distributed poly-generation by residual biomass", funded by the Italian Ministry of Economic Development (MISE), has the main scope of improving micro-cogeneration technologies fueled by biomass. A micro-combined heat and power (mCHP) unit was chosen as a case study to discuss pros and cons of biomass-powered cogeneration within a national park, especially due to its flexibility of use. The availability of local biomasses (woodchips, olive milling residuals) was established by studying the agro-industrial production and by identifying forest areas to be properly managed through an approach using a satellite location system based on the microwave technology. A detailed synergic numerical and experimental characterization of the selected cogeneration system was performed in order to identify its main inefficiencies. Improvements of its operation were optimized by acting on the engine control strategy and by also adding a post-treatment system on the engine exhaust gas line. Overall, the electrical output was increased by up to 6% using the correct spark timing, and pollutant emissions were reduced well below the limits allowed by legislation by working with a lean mixture and by adopting an oxidizing catalyst. Finally, the global efficiency of the system increased from 45.8% to 63.2%. The right blending of different biomasses led to an important improvement of the reliability of the entire plant despite using an agrifood residual, such as olive pomace. It was demonstrated that the use of this biomass is feasible if its maximum mass percentage in a wood matrix mixture does not exceed 25%. The project was concluded with a real operation demonstration within a national park in Southern Italy by replacing a diesel genset with the analyzed and improved biomass-powered plant and by proving a decisive improvement of air quality in the real environment during exercise. |
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