A comparative thermoeconomic analysis and optimization of two different combined cycles by utilizing waste heat source of an MSWPP

Özahi, Emrah; Abuşoğlu, Ayşegül; Tozlu, Alperen

doi:10.1016/j.enconman.2020.113583

Cited by 7 publications

(6 citation statements)

References 36 publications

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“…In system B, as the turbine inlet pressure increases by 16.66% (30)(31)(32)(33)(34)(35), the power produced by the Kalina cycle rises about 6.99%. At the same time, the Kalina pump required work increases by 21.36%.…”

Section: The Effect Of the Bottom Cycle Turbine Inlet Pressurementioning

confidence: 99%

“…Some studies compared the Kalina cycle and ORC. Ozahi et al 35 carried out a thermodynamic and thermo‐economic analysis of combined cycles, a gas turbine‐ORC, and a gas turbine‐Kalina cycle. Ambriz‐Diaz et al 36 presented a comparative study in which the performances of a Kalina cycle and an ORC were compared thermodynamically and economically.…”

Section: Introductionmentioning

confidence: 99%

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A comparison of using organic Rankine and Kalina cycles as bottom cycles in a solar‐powered steam Rankine cycle

Mirjavadi

Pourfayaz

Pourmoghadam

et al. 2022

Energy Science & Engineering

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This study has attempted to compare two thermodynamic cascade cycles, which in this paper are presented as Systems A and B. System A was consisted of a steam Rankine cycle (SRC) as a top cycle and an organic Rankine cycle (ORC) as a bottom cycle. System B was consisted of the same SRC as the top cycle and a Kalina cycle as the bottom cycle. The comparison of both systems has been made by changing a number of parameters. The chosen parameters for this comparison were bottom cycle mass flow rate, aperture area of the collector, top cycle condensing pressure, and bottom cycle turbine inlet and outlet pressures. Also, a short economic evaluation has been made between two proposed cascade cycles (Systems A and B). The result indicated that the Kalina cycle shows superiority over the ORC as the bottom cycle in a solardriven SRC. Furthermore, it was determined that the most effective parameters on the overall efficiency of the systems are the condensing pressure of the top cycle and the outlet pressure of the bottom cycle turbine. Also, among the chosen parameters, the outlet pressure of the bottom cycle turbine had the highest effect on the efficiency of the bottom cycles.Considering the economic aspect, the results showed that the levelized costs of energy for both systems are quite equal at 0.011 ($/kWh).

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Section: The Effect Of the Bottom Cycle Turbine Inlet Pressurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A comparison of using organic Rankine and Kalina cycles as bottom cycles in a solar‐powered steam Rankine cycle

Mirjavadi

Pourfayaz

Pourmoghadam

et al. 2022

Energy Science & Engineering

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“…The evaluation of the exhaust gas released due to the combustion of sewage sludge in the FBSSIs for electricity generation with the ORC was discussed partly in only a few published papers in the open literature [33][34][35]. On the other hand, waste heat obtained from WWTP or MSWP integrated into an ORC was extensively studied [36][37][38][39][40].…”

Section: Electricity Production With An Orc Coupled To the Fluidized Bed Sewage Sludge Incineration (Fbssi) Plantmentioning

confidence: 99%

“…The governing thermodynamic and thermoeconomic relations, including economic assumptions used in the FBSSI plant and TS-ORC system analyses, are presented in Table 3 [37][38][39]. The following assumptions are made for the thermodynamic analysis:  All subsystems in the FBSSI plant and TS-ORC system operate in the steady-state conditions.…”

Section: Thermodynamic and Thermoeconomic Relationsmentioning

confidence: 99%

“…It is calculated by the ratio of the CEPCI values of the reference years. The reference years should be chosen as the commissioned date of the facility and the model design year [38]. In this study, the facility cost index is selected for the years 2012 and 2020 to make a reliable thermoeconomic analysis [40][41][42].…”

Section: Thermodynamic and Thermoeconomic Relationsmentioning

confidence: 99%

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A Two-Stage ORC Integration to an Existing Fluidized Bed Sewage Sludge Incineration Plant for Power Production in the Scope of Waste-to-Energy

Abuşoğlu

Tozlu

Anvari‐Moghaddam

2022

International Journal of Thermodynamics

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This paper presents the design, evaluation, and optimization of an electricity generation system based on the two-stage organic Rankine cycle (TS-ORC), which utilizes the waste heat of an existing fluidized bed sewage sludge incineration (FBSSI) facility. The facility incinerates an average of 300 tons per day of sewage sludge with a dry matter content of 22%. After the drying process, the sewage sludge is burned in a fluidized bed combustor, and exhaust gas at a temperature of about 850-900ºC is released due to the combustion. The system provides the energy required to dry the sludge from this exhaust gas. In this study, a TS-ORC is designed to be coupled to the exhaust gas flowlines discharged to the atmosphere at two different points in the FBSSI plant. The exergy efficiency of the FBSSI facility is found to be 70.5%. Three different working fluids are selected to examine the variations of thermodynamic and thermoeconomic performance parameters of the designed TS-ORC system. The highest power generation in the TS-ORC system (183.40 kW) is achieved using R1234yf as working fluid. R1234yf is also the most expensive fluid for electricity generation among the other working fluids (10.57 $/h). The least electricity generation in the TS-ORC (142.70 kW) occurs at the thermoeconomically most affordable cost with R245fa (9.35 $/h).

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Multi-objective optimization of an innovative power-cooling integrated system based on gas turbine cycle with compressor inlet air precooling, Kalina cycle and ejector refrigeration cycle

Jiang

Zhang

et al. 2021

Energy Conversion and Management

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A comparative thermoeconomic analysis and optimization of two different combined cycles by utilizing waste heat source of an MSWPP

Cited by 7 publications

References 36 publications

A comparison of using organic Rankine and Kalina cycles as bottom cycles in a solar‐powered steam Rankine cycle

A comparison of using organic Rankine and Kalina cycles as bottom cycles in a solar‐powered steam Rankine cycle

A Two-Stage ORC Integration to an Existing Fluidized Bed Sewage Sludge Incineration Plant for Power Production in the Scope of Waste-to-Energy

Multi-objective optimization of an innovative power-cooling integrated system based on gas turbine cycle with compressor inlet air precooling, Kalina cycle and ejector refrigeration cycle

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