Thermal design and CFD analysis of the radial inflow turbine for a CO
            <sub>2</sub>
            ‐based mixture transcritical Rankine cycle

Xia, Jiaxi; Zhou, Kehan; Wang, Jiangfeng; Lou, Juwei; Zhao, Pan; Dai, Yiping

doi:10.1002/er.5131

Cited by 4 publications

(1 citation statement)

References 31 publications

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“…Han et al 23 denoted that using Pentane‐based mixture could achieve the highest energy and exergy efficiency for the geothermal‐based ORC system they investigated. Xia et al 24 designed a turbine using CO 2 ‐based mixture working fluids, and validated that the turbine had an high isentropic efficiency of 84.54%. It is also worth mentioning that they calculated the thermodynamic properties of the mixture based on the Redlich‐Kwong equation of state.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of amulti‐stageaxial turbine for gasifiedcoal‐waterpower system

et al. 2021

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Efficient coal gasification is critical to energy saving and environmental protection. Based on a power generation cycle of coal gasification in supercritical water, this article develops a design method for its low-pressure turbine component. The working medium is a mixture of gasified water and carbondioxide (H 2 O/CO 2). Preliminary design is combined with an optimization algorithm to get the optimum design parameters. To analyze turbine off-design performance, a quasi-one dimensional (Q1D) analysis method is proposed, and three dimensional CFD (3D CFD) predictions are also conducted. In addition, a property table for computing thermodynamic properties of mixture fluids is adopted. It is not only employed in the preliminary design, but also utilized by Q1D and 3D CFD calculations. Based on the developed procedure, a nine-stage H 2 O/CO 2 axial turbine is finally designed. Results indicate that the designed H 2 O/CO 2 turbine has an efficiency of 89.0% in the preliminary design, but 3D CFD predicts a lower value of 84%. This discrepancy is mainly due to a fact that the Q1D method ignores 3D flow effects because it uses empirical loss models to evaluate the performance. Moreover, both Q1D and 3D CFD numerical simulations prove a good off-design performance of the turbine.

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Section: Introductionmentioning

confidence: 99%

Design and analysis of amulti‐stageaxial turbine for gasifiedcoal‐waterpower system

et al. 2021

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Effect of Nozzle Vane and Rotor Clearance on Performance of Variable Nozzle Turbine

Lei

et al. 2022

J. Therm. Sci.

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Wave rotor as a pressure exchanger for lower rotational speed and lower shaft work in a supercritical carbon dioxide Brayton cycle

Chan

Yao

et al. 2023

Energy Conversion and Management

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Thermal design and CFD analysis of the radial inflow turbine for a CO ₂ ‐based mixture transcritical Rankine cycle

Cited by 4 publications

References 31 publications

Design and analysis of amulti‐stageaxial turbine for gasifiedcoal‐waterpower system

Design and analysis of amulti‐stageaxial turbine for gasifiedcoal‐waterpower system

Effect of Nozzle Vane and Rotor Clearance on Performance of Variable Nozzle Turbine

Wave rotor as a pressure exchanger for lower rotational speed and lower shaft work in a supercritical carbon dioxide Brayton cycle

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Thermal design and CFD analysis of the radial inflow turbine for a CO 2 ‐based mixture transcritical Rankine cycle

Cited by 4 publications

References 31 publications

Design and analysis of amulti‐stageaxial turbine for gasifiedcoal‐waterpower system

Design and analysis of amulti‐stageaxial turbine for gasifiedcoal‐waterpower system

Effect of Nozzle Vane and Rotor Clearance on Performance of Variable Nozzle Turbine

Wave rotor as a pressure exchanger for lower rotational speed and lower shaft work in a supercritical carbon dioxide Brayton cycle

Contact Info

Product

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Thermal design and CFD analysis of the radial inflow turbine for a CO ₂ ‐based mixture transcritical Rankine cycle