Investigation of an organic Rankine cycle (ORC) incorporating a heat recovery water-loop: Water consumption assessment

Njock, Julbin Paul; Ngangue, Max Ndame; Biboum, Alain Christian; Sosso, Olivier Thierry; Nzengwa, Robert

doi:10.1016/j.tsep.2022.101303

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…In the context of the ORC loop, a working fluid that enhances cycle efficiency is selected. Research has demonstrated that R600a (isobutane) serves as an effective working fluid for low-to medium-temperature waste heat recovery, offering high power generation capacity and efficiency [31]. The decomposition temperature of R600a is relatively elevated, at approximately 300-320 • C [32], thereby eliminating the risk of decomposition when employing exhaust gas (stream 12) as the heat source.…”

Section: System Descriptionmentioning

confidence: 99%

Exergoeconomic Evaluation of a Cogeneration System Driven by a Natural Gas and Biomass Co-Firing Gas Turbine Combined with a Steam Rankine Cycle, Organic Rankine Cycle, and Absorption Chiller

Liu,

Ren,

Zhang

et al. 2023

Processes

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Considering energy conversion efficiency, pollution emissions, and economic benefits, combining biomass with fossil fuels in power generation facilities is a viable approach to address prevailing energy deficits and environmental challenges. This research aimed to investigate the thermodynamic and exergoeconomic performance of a novel power and cooling cogeneration system based on a natural gas–biomass dual fuel gas turbine (DFGT). In this system, a steam Rankine cycle (SRC), a single-effect absorption chiller (SEAC), and an organic Rankine cycle (ORC) are employed as bottoming cycles for the waste heat cascade utilization of the DFGT. The effects of main operating parameters on the performance criteria are examined, and multi-objective optimization is accomplished with a genetic algorithm using exergy efficiency and the sum unit cost of the product (SUCP) as the objective functions. The results demonstrate the higher energy utilization efficiency of the proposed system with the thermal and exergy efficiencies of 75.69% and 41.76%, respectively, while the SUCP is 13.37 $/GJ. The exergy analysis reveals that the combustion chamber takes the largest proportion of the exergy destruction rate. The parametric analysis shows that the thermal and exergy efficiencies, as well as the SUCP, rise with the increase in the gas turbine inlet temperature or with the decrease in the preheated air temperature. Higher exergy efficiency and lower SUCP could be obtained by increasing the SRC turbine inlet pressure or decreasing the SRC condensation temperature. Finally, optimization results indicate that the system with an optimum solution yields 0.3% higher exergy efficiency and 2.8% lower SUCP compared with the base case.

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Section: System Descriptionmentioning

confidence: 99%

Exergoeconomic Evaluation of a Cogeneration System Driven by a Natural Gas and Biomass Co-Firing Gas Turbine Combined with a Steam Rankine Cycle, Organic Rankine Cycle, and Absorption Chiller

Liu,

Ren,

Zhang

et al. 2023

Processes

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Coupling of the S-CO<sub>2</sub> cycle and ORC to realize an efficient utilization scheme of flue gas waste heat for the coal-fired power generation system

Guo¹,

Sun²,

Xu³

et al. 2022

Sci. Sin.-Tech.

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Life Cycle Assessment Introduced by Using Nanorefrigerant of Organic Rankine Cycle System for Waste Heat Recovery

Yang¹,

Ma²,

Yu³

et al. 2023

Journal of Renewable Materials

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The use of nanorefrigerants in Organic Rankine Cycle (ORC) units is believed to affect the cycle environment performance, but backed with very few relevant studies. For this purpose, a life cycle assessment (LCA) has been performed for the ORC system using nanorefrigerant, the material and energy input, characteristic indicators and comprehensive index of environmental impact, total energy consumption and energy payback time (BPBT) of the whole life cycle of ORC system using Al 2 O 3 /R141b nanorefrigerant were calculated. Total environmental comprehensive indexes reveal that ECER-135 index decrease by 1.5% after adding 0.2% Al 2 O 3 nanoparticles to R141b. Based on the contribution analysis and sensitivity analysis, it can be found out ORC system manufacturing is of the most critical stage, where, the ECER-135 index of ORC component production is the greatest, followed by the preparation process of R141b, transportation phase, and that of Al 2 O 3 nanoparticles preparation is small. The retirement phase which has good environmental benefits affects the result significantly by recycling important materials. Meanwhile, the main cause and relevant suggestion for improvement were traced respectively. Finally, the environmental impacts of various power generations were compared, and results show that the power route is of obvious advantage. Among the renewable energy, ORC system using Al 2 O 3 /R141b nanorefrigerant with minimal environmental impact is only 0.67% of coal-fired power generation. The environmental impact of current work is about 14.34% of other nations' PV results.

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Investigation of an organic Rankine cycle (ORC) incorporating a heat recovery water-loop: Water consumption assessment

Cited by 3 publications

References 18 publications

Exergoeconomic Evaluation of a Cogeneration System Driven by a Natural Gas and Biomass Co-Firing Gas Turbine Combined with a Steam Rankine Cycle, Organic Rankine Cycle, and Absorption Chiller

Exergoeconomic Evaluation of a Cogeneration System Driven by a Natural Gas and Biomass Co-Firing Gas Turbine Combined with a Steam Rankine Cycle, Organic Rankine Cycle, and Absorption Chiller

Coupling of the S-CO<sub>2</sub> cycle and ORC to realize an efficient utilization scheme of flue gas waste heat for the coal-fired power generation system

Life Cycle Assessment Introduced by Using Nanorefrigerant of Organic Rankine Cycle System for Waste Heat Recovery

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Investigation of an organic Rankine cycle (ORC) incorporating a heat recovery water-loop: Water consumption assessment

Cited by 3 publications

References 18 publications

Exergoeconomic Evaluation of a Cogeneration System Driven by a Natural Gas and Biomass Co-Firing Gas Turbine Combined with a Steam Rankine Cycle, Organic Rankine Cycle, and Absorption Chiller

Exergoeconomic Evaluation of a Cogeneration System Driven by a Natural Gas and Biomass Co-Firing Gas Turbine Combined with a Steam Rankine Cycle, Organic Rankine Cycle, and Absorption Chiller

Coupling of the S-CO&lt;sub&gt;2&lt;/sub&gt; cycle and ORC to realize an efficient utilization scheme of flue gas waste heat for the coal-fired power generation system

Life Cycle Assessment Introduced by Using Nanorefrigerant of Organic Rankine Cycle System for Waste Heat Recovery

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Coupling of the S-CO<sub>2</sub> cycle and ORC to realize an efficient utilization scheme of flue gas waste heat for the coal-fired power generation system