Session: 08-07-01: Energy Systems Components

Paper Number: 94916

94916 - Waste Disposal Plant Application of Overhauled and Regenerated Steam Turbine 

The present work aims to evaluate and identify the methodology for reusing disused steam turbines in waste-to-energy plants. First of all, the methodology for assessing the state of the turbine will be identified through a complete overhaul of the same turbine, with particular attention to the components subjected to greater wear, to evaluate the possibility of reconditioning. The reference turbine will be a disused, malfunctioning and old-tech machine, often considered as "waste", but with great potential, such that it was evaluated and finally decided to enhance it through reconditioning. The turbine overhaul operations are characterized by a first analysis of the typical failures of steam turbines, identifying the components most exposed to breakage and a deep accurate inspection has been carried out. To accomplish this task, it is necessary to know, through a completed study, the "history" of the machinery, identifying the components of the steam turbine with the highest incidence of failure. Consequently, the frequency of occurrence and the severity of the damage can be evaluated. It will be necessary to put particular attention to the components that present a greater risk of breakage, identifying the checks to be carried out. All possible fault chains will then be studied, highlighting the main cause and also the various maintenance periods to which the turbine has been subjected. Once the functionality of the turbine has been verified, the possibility of its reuse will be evaluated, for example for geothermal plants or for waste-to-energy. Once the turbine modernization operations have been completed, the possibility of its reuse in a waste treatment plant will be analyzed. So, a pilot power plant will be studied and the possibility of using the modernized turbine within the same plant will be verified, evaluating through simulations (not included in this work) the actual feasibility and functionality of the choice made. Given the current trend in the cost of energy is growing, with a consequent increase in revenues obtainable from the use of a reconditioned turbine, a comparison of the profits deriving from the use of a revised turbine compared to the new one, also considering the time necessary for economic recovery, will be carried out. In the present work, therefore, authors wanted to underline the importance of treating waste as a source of added value (in this case the disused driving machine) and a source of energy (municipal solid waste), rather than as tasks that inevitably weigh on the finances of the State and of the individual citizen.

Presenting Author: Roberto Capata Sapienza, University of Roma

Presenting Author Biography: oberto Capata, Master Degree in Mechanical Engineering in 1994 at the Faculty of Engineering of the University of Rome "Sapienza". He received his PhD in Energy in 2000 at the same University. Professor in "Machines" for the course of Chemical Engineering and "Machines for Biomedical Applications" for the Clinical and Biomedical Engineering course. Commission Member of the State Examination for the admission to practise the Engineering profession. Member of the Scientific Committee of the American Society of Mechanical Engineering (ASME) Annual Winter Meeting (International Mechanical Engineering Congress & Exposition - IMECE). Chairman, Topic and Session organizer for the same Congress. Member of the ASME Technical Committee for the Energy Division. Member of the Scientific Committee of the 8th International Conference on Energy Efficiency Engineering IC - EEE 2019 and for the 8th International Conference on Mechatronics, System Engineering and Robotics IC-MSER 2019. Chairman at the ECOS Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems from 2009 to the present day. Member of the Editorial Board of the Journal of "Power and Energy Engineering" and the Journal "Engineering" (ENG). Reviewer for The Energies Journal, Energy Journal, Engineering Journal, Energy Conversion & Management Journal and ASME Transactions JERT. Invited Researcher at YILDIZ Technical University - Mechanical Engineering Faculty - Mechanical Engineering Department - Heat and Thermodynamics Division. Invited Professor at Ecoles de Saint Cyr Coetquidan (France) in 2011 and at the University of Business and Technology (UBT) in Prisitina Kosovo in July-September 2017. Head of Agreement of bilateral agreements with foreign universities (Brno (Cz), Yildiz (TR), Bilbao (P), Braga (P), Gliwice (PL)). Guest Editor for Energies Special Issue "Organic Rankine Cycle (ORC)". He is the author of numerous publications in international journals concerning fluid machines and the optimization of conventional heat and energy recovery systems. Holder of two industrial patents concerning the optimization of the combustion chambers of turbogas groups and the implementation of ORC heat recovery systems on vehicles used for public and promiscuous transport.

Authors:

Roberto Capata Sapienza, University of Roma
Alfonso Calabria University "eCampus"
Michele Reale University "eCampus"