Closed-Cycle Gas Turbine Working Fluids

Lee, J. C.; Campbell, J. H.; Wright, D. E.

doi:10.1115/1.3230701

Cited by 17 publications

(8 citation statements)

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“…2e31), the decomposition rate of refrigerant R-11 (trichlorofluoromethane, CCl 3 F), increases for catalytic effects by a factor of 3 and of 20 in the presence of Inconel and 18-8 stainless steel respectively, in comparison with platinum. Even Inconel 617, after exposure to helium (a noble gas) with small quantities of impurities (7.14 ppm in volume of hydrogen, 0.021 ppm of water, 0.76 ppm of methane, 0.47 ppm of carbon monoxide, and 0.089 ppm of nitrogen), for 10,000 h, shows appreciable corrosion at temperatures between 650 and 900 C (Lee et al, 1981). Even Inconel 617, after exposure to helium (a noble gas) with small quantities of impurities (7.14 ppm in volume of hydrogen, 0.021 ppm of water, 0.76 ppm of methane, 0.47 ppm of carbon monoxide, and 0.089 ppm of nitrogen), for 10,000 h, shows appreciable corrosion at temperatures between 650 and 900 C (Lee et al, 1981).…”

Section: The Thermochemical Stabilitymentioning

confidence: 99%

Thermal stability of organic fluids for Organic Rankine Cycle systems

Invernizzi

Bonalumi

2017

Organic Rankine Cycle (ORC) Power Systems

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Section: The Thermochemical Stabilitymentioning

confidence: 99%

Thermal stability of organic fluids for Organic Rankine Cycle systems

Invernizzi

Bonalumi

2017

Organic Rankine Cycle (ORC) Power Systems

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“…With Generation IV (Gen IV) nuclear power plants still under development [1], it is crucial that any simulation of NPP performance is as accurate as possible. This often requires the component data in the form characteristics map to be available [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Performance Simulation to Understand the Effects of Multifluid Scaling of Gas Turbine Components for Generation IV Nuclear Power Plants

Osigwe

Gad-Briggs

Nikolaidis

et al. 2020

Journal of Nuclear Engineering and Radiation Science

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A significant hurdle in the development of performance simulation tools to analyze and evaluate nuclear power plants (NPP) is finding data relating to component performance maps. As a result, engineers often rely on an estimation approach using various scaling techniques. The purpose of this study is to determine the component characteristics of a closed-cycle gas turbine NPP using the existing component maps with the corresponding design data. The design data are applied for different working fluids using a multifluid scaling approach to adapt data from one component map into another. The multifluid scaling technique described herein was developed as an in-house computer simulation tool. This approach makes it easy to theoretically scale the existing maps using similar or different working fluids without carrying out a full experimental test or repeating the whole design and development process. The results of selected case studies show a reasonable agreement with the available data. The analyses intend to aid the development of cycles for Generation IV NPPs specifically gas-cooled fast reactors (GFRs) and very high-temperature reactors (VHTRs).

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“…The results suggests that the choice of working fluid greatly influences the range of cycle operating pressures, temperatures and overall performance of the power plant due to the thermodynamic and heat properties of the fluids. However, the choice of working fluid for the proposed Gen IV system is dictated by availability, material compatibility, and thermal stability [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Performance Analyses and Evaluation of Co2 and N2 as Coolants in a Recuperated Brayton Gas Turbine Cycle for a Generation IV Nuclear Reactor Power Plant

Osigwe

Gad-Briggs

Nikolaidis

et al. 2020

Journal of Nuclear Engineering and Radiation Science

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As demands for clean and sustainable energy renew interests in nuclear power to meet future energy demands, generation IV nuclear reactors are seen as having the potential to provide the improvements required for nuclear power generation. However, for their benefits to be fully realized, it is important to explore the performance of the reactors when coupled to different configurations of closed-cycle gas turbine power conversion systems. The configurations provide variation in performance due to different working fluids over a range of operating pressures and temperatures. The objective of this paper is to undertake analyses at the design and off-design conditions in combination with a recuperated closed-cycle gas turbine and comparing the influence of carbon dioxide and nitrogen as the working fluid in the cycle. The analysis is demonstrated using an in-house tool, which was developed by the authors. The results show that the choice of working fluid controls the range of cycle operating pressures, temperatures, and overall performance of the power plant due to the thermodynamic and heat properties of the fluids. The performance results favored the nitrogen working fluid over CO2 due to the behavior CO2 below its critical conditions. The analyses intend to aid the development of cycles for generation IV nuclear power plants (NPPs) specifically gas-cooled fast reactors (GFRs) and very high-temperature reactors (VHTRs).

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Closed-Cycle Gas Turbine Working Fluids

Cited by 17 publications

References 0 publications

Thermal stability of organic fluids for Organic Rankine Cycle systems

Thermal stability of organic fluids for Organic Rankine Cycle systems

Performance Simulation to Understand the Effects of Multifluid Scaling of Gas Turbine Components for Generation IV Nuclear Power Plants

Performance Analyses and Evaluation of Co2 and N2 as Coolants in a Recuperated Brayton Gas Turbine Cycle for a Generation IV Nuclear Reactor Power Plant

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