1. Industrial Engineering Department, University of L’Aquila, Piazzale E. Pontieri 1, Monteluco di Roio, 67100 L’Aquila, Italy
2. Department of Chemical Engineering, University College London, London WC1E 7JE, UK
3. Department of Engineering Sciences, Università degli Studi Guglielmo Marconi, 00193 Rome, Italy
4. Department of Astronautics, Electrical and Energy Engineering, Sapienza Università di Roma, Via Eudossiana 18, 00184 Rome, Italy
5. ENERECO Spa, Via L. Einaudi, 84/88, 61032 Fano, Italy