Thermodynamic analysis of an organic Rankine cycle for waste heat recovery from gas turbines

Carcasci, Carlo; Ferraro, Riccardo; Miliotti, Edoardo

doi:10.1016/j.energy.2013.11.080

Cited by 107 publications

(28 citation statements)

References 32 publications

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“…Siddiqi et al [9] investigated hydrocarbons from n-pentane to ndodecane used in ORCs of different temperature levels. Carcasci et al [10] selected toluene, benzene and cyclohexane as ORC working fluids. Their case study showed that cyclohexane was the best fluid under low temperature conditions, benzene was the best choice for medium temperature conditions, and toluene should be used under high temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

Analysis of ORC (Organic Rankine Cycle) systems with pure hydrocarbons and mixtures of hydrocarbon and retardant for engine waste heat recovery

Song

2015

Applied Thermal Engineering

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Section: Introductionmentioning

confidence: 99%

Analysis of ORC (Organic Rankine Cycle) systems with pure hydrocarbons and mixtures of hydrocarbon and retardant for engine waste heat recovery

Song

2015

Applied Thermal Engineering

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“…Therefore, the off-design performance of the expander has been evaluated using a well-established procedure available in literature. In particular, according to Gabbrielli [77], turbine isentropic efficiency has been calculated in off-design conditions using Equation (A.17): 17) In addition, the expansion inlet pressure and the mass flow water in off-design have been calculated using Stodola's ellipse approach [78] by the following equations: The design conditions of the turbine are shown in Table 2.…”

Section: Expandermentioning

confidence: 99%

“…The majority of the papers available in literature, regarding ORC systems, investigate the appropriate selection of the fluid, which is strongly related to the heat source used [1,2,6,[11][12][13][14][15][16][17]. For example, several organic fluids have been investigated by Calise et al [6] to evaluate ORC performance varying heat source temperature from 120 to 300 °C.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Simulation and Exergo-Economic Optimization of a Hybrid Solar–Geothermal Cogeneration Plant

2015

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This paper presents a dynamic simulation model and a parametric analysis of a solar-geothermal hybrid cogeneration plant based on an Organic Rankine Cycle (ORC) powered by a medium-enthalpy geothermal resource and a Parabolic Trough Collector solar field. The fluid temperature supplying heat to the ORC varies continuously as a function of the solar irradiation, affecting both the electrical and thermal energies produced by the system. Thus, a dynamic simulation was performed. The ORC model, developed in Engineering Equation Solver, is based on zero-dimensional energy and mass balances and includes specific algorithms to evaluate the off-design system performance. The overall simulation model of the solar-geothermal cogenerative plant was implemented in the TRNSYS environment. Here, the ORC model is imported, whereas the models of the other components of the system are developed on the basis of literature data. Results are analyzed on different time bases presenting energetic, economic and exergetic performance data. Finally, a rigorous optimization has been performed to determine the set of system design/control parameters minimizing simple payback period and exergy destruction rate. The system is profitable when a significant amount of the heat produced is consumed. The highest irreversibilities are due to the solar field and to the heat exchangers. OPEN ACCESSEnergies 2015, 8 2607

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“…Carcasci et al. [11] indicated that the use of an ORC is a promising choice for the recovery of waste heat at low or medium temperatures.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of the Vehicle Diesel Engine-ORC Combined System Based on a Screw Expander

et al. 2014

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To achieve energy saving and emission reduction for vehicle diesel engines, the organic Rankine cycle (ORC) was employed to recover waste heat from vehicle diesel engines, R245fa was used as ORC working fluid, and the resulting vehicle diesel engine-ORC combined system was presented. The variation law of engine exhaust energy rate under various operating conditions was obtained, and the running performances of the screw expander were introduced. Based on thermodynamic models and theoretical calculations, the running performance of the vehicle diesel engine-ORC combined system was analyzed under various engine operating condition scenarios. Four evaluation indexes were defined: engine thermal efficiency increasing ratio (ETEIR), waste heat recovery efficiency (WHRE), brake specific fuel consumption (BSFC) of the combined system, and improvement ratio of BSFC (IRBSFC). Results showed that when the diesel engine speed is 2200 r/min and diesel engine torque is 1200 N·m, the power output of the combined system reaches its maximum of approximately 308.6 kW, which is 28.6 kW higher than that of the diesel engine. ETEIR, WHRE, and IRBSFC all reach their maxima at 10.25%, 9.90%, and 9.30%, respectively. Compared with that of the diesel engine, the BSFC of the combined system is obviously improved under various engine operating conditions. OPEN ACCESSEnergies 2014, 7 3401

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Thermodynamic analysis of an organic Rankine cycle for waste heat recovery from gas turbines

Cited by 107 publications

References 32 publications

Analysis of ORC (Organic Rankine Cycle) systems with pure hydrocarbons and mixtures of hydrocarbon and retardant for engine waste heat recovery

Analysis of ORC (Organic Rankine Cycle) systems with pure hydrocarbons and mixtures of hydrocarbon and retardant for engine waste heat recovery

Dynamic Simulation and Exergo-Economic Optimization of a Hybrid Solar–Geothermal Cogeneration Plant

Performance Analysis of the Vehicle Diesel Engine-ORC Combined System Based on a Screw Expander

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