Flow irreversibility and heat transfer effects on turbine efficiency

Inhestern, Lukas Benjamin; Peitsch, Dieter; Paniagua, Guillermo

doi:10.1016/j.apenergy.2023.122077

Cited by 4 publications

(1 citation statement)

References 38 publications

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“…The simplified ideal Rankine cycle consists of a pump section, a boiler section with an included superheater, a condensing-type steam turbine section, and a condenser section [28]. "Ideal" refers to ignoring losses in the turbine and pump section, assuming that they operate isentropically [29][30][31][32][33][34][35]. As the process within the condenser is a phase change of water at a constant temperature that is implied by pressure, the minimum pressure within the condenser directly specifies the condensation temperature within it [36], which is the minimum temperature in the four-stage SRC.…”

Section: Introductionmentioning

confidence: 99%

Condenser Pressure Influence on Ideal Steam Rankine Power Vapor Cycle using the Python Extension Package Cantera for Thermodynamics

Marzouk

2024

Eng. Technol. Appl. Sci. Res.

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This study investigates the Rankine vapor power thermodynamic cycle using steam/water as the working fluid, which is common in commercial power plants for power generation as the source of the rotary shaft power needed to drive electric generators. The four-process cycle version, which comprises a water pump section, a boiler/superheater section, a steam turbine section, and a condenser section, was considered. The performance of this thermodynamic power cycle depends on several design parameters. This study varied a single independent variable, the absolute pressure of the condenser, by a factor of 256, from 0.78125 to 200 kPa. The peak pressure and peak temperature in the cycle were fixed at 50 bar (5,000 kPa) and 600°C, respectively, corresponding to a base case with a base value for the condenser's absolute pressure of 12.5 kPa (0.125 bar). The analysis was performed using the thermodynamics software package Cantera as an extension of the Python programming language. The results suggest that over the range of condenser pressures examined, a logarithmic function can be deployed to describe the dependence of input heat, the net output work, and cycle efficiency on the absolute pressure of the condenser. Each of these three performance metrics decreases as the absolute pressure of the condenser increases. However, a power function is a better choice to describe how the steam dryness (steam quality) at the end of the turbine section increases as the absolute pressure of the condenser rises.

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Section: Introductionmentioning

confidence: 99%

Condenser Pressure Influence on Ideal Steam Rankine Power Vapor Cycle using the Python Extension Package Cantera for Thermodynamics

Marzouk

2024

Eng. Technol. Appl. Sci. Res.

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Advances in Sustainable Battery Technologies: Enhancing Longevity, Recycling, and Alternative Components-- A Review

Hailemariam,

Birkneh

2024

AJAC

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The field of sustainable battery technologies is rapidly evolving, with significant progress in enhancing battery longevity, recycling efficiency, and the adoption of alternative components. This review highlights recent advancements in electrode materials, focusing on silicon anodes and sulfur cathodes. Silicon anodes improve capacity through lithiation and delithiation processes, while sulfur cathodes offer high energy density, despite inherent challenges. Recycling technologies are also advancing, with mechanical methods achieving 60% efficiency, hydrometallurgical processes reaching 75%, and pyrometallurgical methods achieving 85% efficiency. These improvements in recycling contribute to a more sustainable lifecycle for batteries. Moreover, the shift towards alternative components, such as organic batteries, sodium-ion batteries, and solid-state batteries, is gaining momentum, representing 10%, 20%, and 15% of the market, respectively. These alternatives address environmental concerns and enhance battery performance and reliability. These developments underscore the importance of ongoing innovation in electrode materials and recycling technologies to overcome current challenges. As the industry continues to evolve, these advancements pave the way for more efficient and environmentally friendly energy storage solutions, promising a sustainable future for battery technologies.

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Condenser Pressure Influence on Ideal Steam Rankine Power Vapor Cycle using the Python Extension Package Cantera for Thermodynamics

Marzouk

2024

SSRN Journal

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Flow irreversibility and heat transfer effects on turbine efficiency

Cited by 4 publications

References 38 publications

Condenser Pressure Influence on Ideal Steam Rankine Power Vapor Cycle using the Python Extension Package Cantera for Thermodynamics

Condenser Pressure Influence on Ideal Steam Rankine Power Vapor Cycle using the Python Extension Package Cantera for Thermodynamics

Advances in Sustainable Battery Technologies: Enhancing Longevity, Recycling, and Alternative Components-- A Review

Condenser Pressure Influence on Ideal Steam Rankine Power Vapor Cycle using the Python Extension Package Cantera for Thermodynamics

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