Thermoeconomic multi-objective optimization of an organic Rankine cycle (ORC) adapted to an existing solid waste power plant

Autor: Emrah Özahi, Aysegul Abusoglu, Alperen Tozlu
Přispěvatelé: Bayburt University
Rok vydání: 2018
Předmět:
Optimization
MATLAB
Rankine cycle
Thermoeconomic analysis
Power station
Maximum power principle
Paraffins
020209 energy
Waste heat utilization
Energy Engineering and Power Technology
Organic Rankine cycles
02 engineering and technology
Exergy efficiencies
Organic Rankine cycle
Waste heat recovery unit
law.invention
Organic fluid
law
Waste heat
0202 electrical engineering
electronic engineering
information engineering
Maximum power output
Process engineering
Waste heat recovery
Net power outputs
Multiobjective optimization
Non- dominated sorting genetic algorithms
Renewable Energy
Sustainability and the Environment
business.industry
Municipal solid waste
Genetic algorithms
Energy conversion
Organic Rankine Cycle(ORC)
Fuel Technology
Genetic algorithm
Nuclear Energy and Engineering
Exergy efficiency
Environmental science
Working fluid
Gases
business
Toluene
Zdroj: Energy Conversion and Management. 168:308-319
ISSN: 0196-8904
DOI: 10.1016/j.enconman.2018.04.103
Popis: In this paper, thermodynamic and thermoeconomic analyses, and also optimization of an organic Rankine cycle (ORC) were performed. The system was adapted to an existing solid waste power plant with a 5.66 MW installed power capacity in order to produce additional power from the exhaust gas. The actual operating data of the plant were utilized during all stages of the analyses. The originality of this paper is based on the analysis of the possibility of the energy conversion of an exhaust gas with a temperature of 566 & #x000B0;C into the electricity by utilizing an ORC system in the concept of waste-to-energy. Four different working fluids: toluene, octamethyltrisiloxane (MDM), octamethyl cyclotetrasiloxane (D4) and n-decane were considered and analyzed for the current system. This is also another novelty of this study due to lack of such a study, in the open literature, that deals with an ORC utilized for a typical municipal solid waste power plant. According to the thermoeconomic analyses, toluene was found to be the optimum working fluid with the maximum power output of 584.6 kW and the exergy efficiency of 15.69%. The optimization of the cycle was performed by using the non-dominated sorting genetic algorithm method (NSGA-II) in MATLAB software environment. The optimization results were compared and the deviations of the net power output and the total cost rate were evaluated as & #x2212;5.89%, & #x2212;3.51 & #x00024;/h for toluene; 0.96%, & #x2212;3.60 & #x00024;/h for MDM; 8.45%, & #x2212;2.04 & #x00024;/h for D4 and 2.00%, & #x2212;5.54 & #x00024;/h for n-decane, respectively. © 2018 Elsevier Ltd
Databáze: OpenAIRE
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