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Journal articles on the topic 'Brayton cycle'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Wu, Pan, Chuntian Gao, Yanping Huang, Dan Zhang, and Jianqiang Shan. "Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver." Science and Technology of Nuclear Installations 2020 (January 24, 2020): 1–16. http://dx.doi.org/10.1155/2020/5945718.

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Coupling supercritical carbon dioxide (S-CO2) Brayton cycle with Gen-IV reactor concepts could bring advantages of high compactness and efficiency. This study aims to design proper simple and recompression S-CO2 Brayton cycles working as the indirect cooling system for a mediate-temperature lead fast reactor and quantify the Brayton cycle performance with different heat rejection temperatures (from 32°C to 55°C) to investigate its potential use in different scenarios, like arid desert areas or areas with abundant water supply. High-efficiency S-CO2 Brayton cycle could offset the power conversi

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2

Choi, Sungwook, In Woo Son, and Jeong Ik Lee. "Comparative Performance Evaluation of Gas Brayton Cycle for Micro–Nuclear Reactors." Energies 16, no. 4 (2023): 2065. http://dx.doi.org/10.3390/en16042065.

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Gas Brayton cycles have been considered the next promising power cycles for microreactors. Especially the open-air and closed supercritical CO2 (S-CO2) Brayton cycles have received attention due to their high thermal efficiency and compact component sizes when compared to the steam Rankine cycle. In this research, the performances of the open-air and closed S-CO2 Brayton cycle at microreactor power range are compared with polytropic turbomachinery efficiency. When optimizing the cycle, three different optimization parameters are considered in this paper: maximum efficiency, maximum cycle speci

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3

Siddiqui, Muhammad Ehtisham, and Khalid H. Almitani. "Proposal and Thermodynamic Assessment of S-CO2 Brayton Cycle Layout for Improved Heat Recovery." Entropy 22, no. 3 (2020): 305. http://dx.doi.org/10.3390/e22030305.

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This article deals with the thermodynamic assessment of supercritical carbon dioxide (S-CO2) Brayton power cycles. The main advantage of S-CO2 cycles is the capability of achieving higher efficiencies at significantly lower temperatures in comparison to conventional steam Rankine cycles. In the past decade, variety of configurations and layouts of S-CO2 cycles have been investigated targeting efficiency improvement. In this paper, four different layouts have been studied (with and without reheat): Simple Brayton cycle, Recompression Brayton cycle, Recompression Brayton cycle with partial cooli

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4

Kim, Jin-Seo, In-Ho Chung, Tong-Seop Kim, and Chan-Ho Song. "Thermal Performance Design and Analysis of Reversed Brayton Cycle Heat Pumps for High-Temperature Heat Supply." Energies 17, no. 12 (2024): 2953. http://dx.doi.org/10.3390/en17122953.

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This study examined the performance of reversed Brayton cycle heat pumps to supply heat above 300 °C. The aim was to overcome the current temperature limitations faced by heat pump technology in industrial heat supply sectors by examining the viability of the reversed Brayton cycle. In particular, the effects of the operating conditions on the cycle performance, such as the waste and return heat temperatures, were analyzed through thermal performance analysis. The reversed Brayton cycle heat pumps showed improved performance over conventional vapor compression cycle heat pumps when a heat supp

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5

Woodward, John B. "Ideal Cycle Evaluation of Steam Augmented Gas Turbines." Journal of Ship Research 40, no. 01 (1996): 79–88. http://dx.doi.org/10.5957/jsr.1996.40.1.79.

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A wide range of air-standard Brayton and modified-Brayton power cycles are evaluated to determine their second-law efficiencies and their volume flows per unit output. A cycle with reheating is chosen for further analysis on the basis of its potential for high efficiency through exploitation of its exhaust availability (exergy) and its low volume rates. This exploitation can be had either through a conventional Rankine bottoming cycle, or through injection of the bottoming cycle steam into the Brayton turbine. The Rankine bottoming cycle is superior with respect to second-law efficiency; the c

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6

Zhang, Lei, Yang Jiao, Jian Wang, et al. "Investigation on the Application of Carbon Dioxide Power Generation Cycles in Solar Energy Heating Utilization." Journal of Physics: Conference Series 2941, no. 1 (2025): 012081. https://doi.org/10.1088/1742-6596/2941/1/012081.

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Abstract In the domain of solar thermal energy utilization, the power cycles that utilize carbon dioxide as the working fluid predominantly encompass the transcritical Rankine cycle and the supercritical Brayton cycle. This study employs MATLAB programming to compute and examine the thermal efficiencies of these two cycles across a spectrum of solar collector temperatures ranging from 200 to 1000°C and carbon dioxide working fluid pressures from 10 to 40 MPa. At elevated temperatures, the thermal efficiencies of both cycles augment with the escalation in working fluid pressure; however, at red

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7

Li, Kai, and Kai Sun. "Influence of Supercritical Carbon Dioxide Brayton Cycle Parameters on Intelligent Circulation System and Its Optimization Strategy." Journal of Physics: Conference Series 2066, no. 1 (2021): 012074. http://dx.doi.org/10.1088/1742-6596/2066/1/012074.

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Abstract The supercritical carbon dioxide (SCO2) Brayton cycle takes advantage of the special physical properties of carbon dioxide near the critical point (31.1 °C, 7.39MPa), and has higher energy conversion efficiency than the current large-scale steam power cycle. This cycle can be widely used in the field of power generation, but a lot of research work is still needed in terms of component parameters and layout under different working conditions. In this regard, the purpose of this paper is to study the influence of supercritical carbon dioxide Brayton cycle parameters on cycle efficiency

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8

Tkachenko, Andrey Y., Evgeniy P. Filinov та Ol'ga V. Tremkina. "Optimization of the cycle of a small-sized gas turbine plant using the СAE-system «ASTRA»". Journal of Dynamics and Vibroacoustics 10, № 4 (2024): 20–32. https://doi.org/10.18287/2409-4579-2024-10-4-20-32.

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In this work, the optimization of the cycle of a small-sized gas turbine unit was carried out, its thermodynamic parameters were determined using the СAE-system «ASTRA». Computer models of power plants operating on the regenerative Brayton cycle, on the Brayton cycle with intermediate cooling and regeneration, on the Brayton cycle with intermediate heating and regeneration, and on the Brayton cycle with intermediate cooling, intermediate heating and regeneration were built, and their thermodynamic parameters were assessed. Regularities in the influence of design parameters of power plants on t

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9

Santos, J. T. dos, T. M. Fagundes, E. D. dos Santos, L. A. Isoldi, and L. A. O. Rocha. "ANALYSIS OF A COMBINED BRAYTON/RANKINE CYCLE WITH TWO REGENERATORS IN PARALLEL." Revista de Engenharia Térmica 16, no. 2 (2017): 10. http://dx.doi.org/10.5380/reterm.v16i2.62205.

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This work presents a configuration of two regenerators in parallel for a power generation Brayton/Rankine cycle where the output power is 10 MW. The working fluids considered for the Brayton and Rankine cycles are air and water, respectively. The addition of a regenerator with the previous existing cycle of this kind resulted in the addition of a second-stage turbine in the Rankine cycle of reheat. The objective of this modification is to increase the thermal efficiency of the combined cycle. In order to examine the efficiency of the new configuration, it is performed a thermodynamic modelling

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10

Sun, Lei, Yuqi Wang, Ding Wang, and Yonghui Xie. "Parametrized Analysis and Multi-Objective Optimization of Supercritical CO2 (S-CO2) Power Cycles Coupled with Parabolic Trough Collectors." Applied Sciences 10, no. 9 (2020): 3123. http://dx.doi.org/10.3390/app10093123.

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Supercritical CO2 (S-CO2) Brayton cycles have become an effective way in utilizing solar energy, considering their advantages. The presented research discusses a parametrized analysis and systematic comparison of three S-CO2 power cycles coupled with parabolic trough collectors. The effects of turbine inlet temperature and pressure, compressor inlet temperature, and pressure on specific work, overall efficiency, and cost of core equipment of different S-CO2 Brayton cycles are discussed. Then, the two performance criteria, including specific work and cost of core equipment, are compared, simult

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Zhang, W., L. Chen, and F. Sun. "Power and efficiency optimization for combined Brayton and two parallel inverse Brayton cycles. Part 2: Performance optimization." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 222, no. 3 (2008): 405–13. http://dx.doi.org/10.1243/09544062jmes640b.

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The power and efficiency of the open combined Brayton and two parallel inverse Brayton cycles are analysed and optimized based on the model established using finite-time thermodynamics in Part 1 of the current paper by adjusting the compressor inlet pressure of the two parallel inverse Brayton cycles, the mass flowrate and the distribution of pressure losses along the flow path. It is shown that the power output has a maximum with respect to the compressor inlet pressures of the two parallel inverse Brayton cycles, the air mass flowrate or any of the overall pressure drops, and the maximized p

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12

Luo, Lihuang, Hong Gao, Chao Liu, and Xiaoxiao Xu. "Parametric Investigation and Thermoeconomic Optimization of a Combined Cycle for Recovering the Waste Heat from Nuclear Closed Brayton Cycle." Science and Technology of Nuclear Installations 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/6790576.

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A combined cycle that combines AWM cycle with a nuclear closed Brayton cycle is proposed to recover the waste heat rejected from the precooler of a nuclear closed Brayton cycle in this paper. The detailed thermodynamic and economic analyses are carried out for the combined cycle. The effects of several important parameters, such as the absorber pressure, the turbine inlet pressure, the turbine inlet temperature, the ammonia mass fraction, and the ambient temperature, are investigated. The combined cycle performance is also optimized based on a multiobjective function. Compared with the closed

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13

He, Yichuan, Aihua Dong, Min Xie, and Yang Liu. "A Design of Parameters with Supercritical Carbon Dioxide Brayton Cycle for CiADS." Science and Technology of Nuclear Installations 2018 (June 10, 2018): 1–9. http://dx.doi.org/10.1155/2018/3245604.

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Recompression supercritical carbon dioxide (SCO2) Brayton Cycle for the Chinese Initiative Accelerator Driven System (CiADS) is taken into account, and flexible thermodynamic modeling method is presented. The influences of the key parameters on thermodynamic properties of SCO2 Brayton Cycle are discussed and the comparative analyses on genetic algorithm and pattern search algorithm are conducted. It is shown that the cycle parameters such as turbine inlet temperature, pressure ratio, outlet temperature at the hot end of condenser, and terminal temperature difference of regenerator 1 and regene

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14

Shaw, John E. "Comparing Carnot, Stirling, Otto, Brayton and Diesel Cycles." Transactions of the Missouri Academy of Science 42, no. 2008 (2008): 1–6. http://dx.doi.org/10.30956/0544-540x-42.2008.1.

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Comparing the efficiencies of the Carnot, Stirling, Otto, Brayton and Diesel cycles can be a frustrating experience for the student. The efficiency of Carnot and Stirling cycles depends only on the ratio of the temperature extremes whereas the efficiency of Otto and Brayton cycles depends only on the compression ratio. The efficiency of a Diesel cycle is generally expressed in terms of the temperatures at the four turning points of the cycle or the volumes at these turning points. How does one actually compare the efficiencies of these thermodynamic cycles? To compare the cycles, an expression

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15

Xu, Lin, Xiaojuan Niu, Wenpeng Hong, and Wei Su. "A Comprehensive Multi-Objective Optimization Study on the Thermodynamic Performance of a Supercritical CO2 Brayton Cycle Incorporating Multi-Stage Main Compressor Intermediate Cooling." Energies 17, no. 24 (2024): 6372. https://doi.org/10.3390/en17246372.

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This study proposes a supercritical carbon dioxide Brayton cycle incorporating multi-stage main compressor intermediate cooling (MMCIC sCO2 Brayton cycle), and conducts an in-depth investigation and discussion on the enhancement of its thermodynamic performance. With the aim of achieving the maximum power cycle thermal efficiency and the maximum specific net work, this study examines the variation of the Pareto frontier with respect to the number of intermediate cooling stages and critical operational parameters. The results indicate that the MMCIC sCO2 Brayton cycle offers significant advanta

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16

Massardo, Aristide. "High-Efficiency Solar Dynamic Space Power Generation System." Journal of Solar Energy Engineering 113, no. 3 (1991): 131–37. http://dx.doi.org/10.1115/1.2930484.

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Space power technologies have undergone significant advances over the past few years, and great emphasis is being placed on the development of dynamic power systems at this time. A design study has been conducted to evaluate the applicability of a combined cycle concept—closed Brayton cycle and organic Rankine cycle coupling—for solar dynamic space power generation systems. In the concept presented here (solar dynamic combined cycle), the waste heat rejected by the closed Brayton cycle working fluid is utilized to heat the organic working fluid of an organic Rankine cycle system. This allows t

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17

Ziółkowski, Paweł, Witold Zakrzewski, Oktawia Kaczmarczyk, and Janusz Badur. "Thermodynamic analysis of the double Brayton cycle with the use of oxy combustion and capture of CO2." Archives of Thermodynamics 34, no. 2 (2013): 23–38. http://dx.doi.org/10.2478/aoter-2013-0008.

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Abstract In this paper, thermodynamic analysis of a proposed innovative double Brayton cycle with the use of oxy combustion and capture of CO2, is presented. For that purpose, the computation flow mechanics (CFM) approach has been developed. The double Brayton cycle (DBC) consists of primary Brayton and secondary inverse Brayton cycle. Inversion means that the role of the compressor and the gas turbine is changed and firstly we have expansion before compression. Additionally, the workingfluid in the DBC with the use of oxy combustion and CO2 capture contains a great amount of H2O and CO2, and

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18

Liu, C. L., Z. Y. Li, N. Hao, W. J. Bian, and Q. Chen. "Supercritical CO₂ recompression Brayton power cycle for hybrid concentrating solar and biomass power plant." Journal of Physics: Conference Series 2723, no. 1 (2024): 012007. http://dx.doi.org/10.1088/1742-6596/2723/1/012007.

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Abstract The supercritical CO2 Brayton cycle has great potential in various renewable energy systems. The supercritical CO2 recompression Brayton power cycle for hybrid concentrating solar and biomass power plant is proposed and analyzed in this paper. The supercritical CO2 is heated by both the molten salt and flue gas from the biomass boiler. The inlet temperature of the turbine in the supercritical CO2 recompression Brayton power cycle for hybrid power plant rises to 620 °C. The waste heat from the system is recovered by the steam turbine to improve energy utilization efficiency. The effici

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19

Zhang, Y., and J. Chen. "The Thermodynamic Performance Analysis of an Irreversible Space Solar Dynamic Power Brayton System and its Parametric Optimum Design." Journal of Solar Energy Engineering 128, no. 3 (2006): 409–13. http://dx.doi.org/10.1115/1.2212440.

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A solar dynamic (SD) power system composed of a concentrating solar collector and an irreversible Brayton cycle system is set up, where the heat losses of the collector are dominated by the radiation, the heat transfer between the collector and the Brayton cycle system obeys Newton’s law, and the heat transfer between the Brayton cycle system and the ambient obeys the radiant heat transfer law. The cycle model is used to investigate synthetically the influence of the radiant heat losses of the collector, the finite-rate heat transfer, and the irreversible adiabatic processes in the Brayton cyc

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20

Arnaiz del Pozo, C., S. Sanchez-Orgaz, J. Rodríguez Martín, et al. "Thermal and Exergy Efficiency Analysis of a Solar-driven Closed Brayton Power Plant with Helium & s-CO2 as Working Fluids." Energies and Quality Journal 1 (June 2019): 177–89. http://dx.doi.org/10.24084/eqj19.319.

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Solar Thermal Energy power plants operating with traditional steam Rankine cycles have a low thermal and exergy efficiency. An attractive pathway to increase the competitiveness of this technology is to investigate Closed Brayton cycles working with different fluids with desirable properties that show potential for improving their efficiency In this work a solar driven regenerative Brayton cycle is studied employing two different working fluids: Helium and supercritical CO2. The cycle efficiencies are determined for different turbine inlet temperatures and for the optimal compressor pressure r

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Baglivo, Cristina, Paolo Maria Congedo, and Pasquale Antonio Donno. "Analysis of Thermodynamic Cycles of Heat Pumps and Magnetic Refrigerators Using Mathematical Models." Energies 14, no. 4 (2021): 909. http://dx.doi.org/10.3390/en14040909.

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This paper proposes a critical review of the different aspects concerning magnetic refrigeration systems, and performs a detailed analysis of thermodynamic cycles, using mathematical models found in the literature. Langevin’s statistical mechanical theory faithfully describes the physical operation of a refrigeration machine working according to a magnetic Ericsson cycle. Results of mathematical and real experimental models are compared to deduce which best describes the Ericsson cycle. The theoretical data are not perfectly consistent with the experimental data; there is a maximum deviation o

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Zhu, Dengting, Yun Lin, and Xinqian Zheng. "Strategy on performance improvement of inverse Brayton cycle system for energy recovery in turbocharged diesel engines." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 234, no. 1 (2019): 85–95. http://dx.doi.org/10.1177/0957650919847920.

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The inverse Brayton cycle is a potential technology for waste heat energy recovery. It consists of three components: one turbine, one heat exchanger, and one compressor. The exhaust gas is further expanded to subatmospheric pressure in the turbine, and then cooled in the heat exchanger, last compressed in the compressor into the atmosphere. The process above is the reverse of the pressurized Brayton cycle. This work has presented the strategy on performance improvement of the inverse Brayton cycle system for energy recovery in turbocharged diesel engines, which has pointed the way to the futur

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Chen, L., W. Zhang, and F. Sun. "Parametric analysis of a gas turbine cycle coupled to a Brayton refrigeration cycle." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 223, no. 5 (2009): 497–503. http://dx.doi.org/10.1243/09576509jpe722.

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Performance analysis and optimization of an endoreversible Brayton cycle coupled to a Brayton refrigeration cycle has been performed using finite-time thermodynamics. The analy-tical formulae are derived with respect to power, efficiency, optimal extracted pressure ratio of air refrigeration cycle corresponding to optimal power, optimal power and the corresponding efficiency. The influences of various parameters on the cycle performances are analysed by numerical examples. The results show that there exists one optimal pressure ratio of the compressor corresponding to maximum power and another

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Skokov, Konstantin, Alexey Karpenkov, Yury G. Pastushenkov, and Oliver Gutfleisch. "Numerical Simulation of Magnetic Cooling Cycles." Solid State Phenomena 190 (June 2012): 319–22. http://dx.doi.org/10.4028/www.scientific.net/ssp.190.319.

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A model for Brayton cooling cycles used in magnetic refrigeration near room temperature was developed. This model was used to calculate a theoretical limit of temperature span and cooling power. The cooling power was calculated for single and double Brayton cooling cycles with Gd as the working body. The obtained results clearly demonstrate the functional ranges of Bryton-cycle refrigerators.

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Jarungthammachote, Sompop. "Thermodynamic investigation of intercooling location effect on supercritical CO2 recompression Brayton cycle." Journal of Mechanical Engineering and Sciences 15, no. 3 (2021): 8262–76. http://dx.doi.org/10.15282/jmes.15.3.2021.05.0649.

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In S-CO2 recompression Brayton cycle, use of intercooling is a way to improve the cycle efficiency. However, it may decrease the efficiency due to increase of heat rejection. In this work, two S-CO2 recompression Brayton cycles are investigated using the thermodynamic model. The first cycle has intercoolings in a main compression and a recompression process (MCRCIC) and the second cycle has an intercooling in only the recompression process (RCIC). The thermal efficiencies of both cycles are compared with that of S-CO2 recompression Brayton cycle with intercooling in the main compression proces

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Yang, Jian, Yanzhong Li, and Hongbo Tan. "Study on Performance Comparison of Two Hydrogen Liquefaction Processes Based on the Claude Cycle and the Brayton Refrigeration Cycle." Processes 11, no. 3 (2023): 932. http://dx.doi.org/10.3390/pr11030932.

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Hydrogen liquefaction is an essential section for efficient storage and transportation of hydrogen energy. Both the Claude cycle and Brayton refrigeration cycle are available for large-scale hydrogen liquefaction systems. Two large-scale hydrogen liquefiers with the liquefaction capacity of 120 t/d based on the Brayton refrigeration cycle and the Claude cycle, respectively, are analyzed and compared in this study. Sensitivity analysis is used to optimize the parameters of two liquefaction systems in HYSYS. According to the results, the exergy loss and specific energy consumption of the Claude

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Chen, L., W. Zhang, and F. Sun. "Power and efficiency optimization for combined Brayton and two parallel inverse Brayton cycles. Part 1: Description and modelling." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 222, no. 3 (2008): 393–403. http://dx.doi.org/10.1243/09544062jmes640a.

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A thermodynamic model for open combined Brayton and two parallel inverse Brayton cycles is established using finite-time thermodynamics in part A of the current paper. The flow processes of the working fluid with the pressure drops of the working fluid and the size constraints of the real power plant are modelled. There are 17 flow resistances encountered by the gas stream for the combined Brayton and two parallel inverse Brayton cycles. Six of these, the friction through the blades and vanes of the compressors and the turbines, are related to the isentropic efficiencies. The remaining flow re

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Invernizzi, Costante Mario, and Gioele Di Marcoberardino. "An Overview of Real Gas Brayton Power Cycles: Working Fluids Selection and Thermodynamic Implications." Energies 16, no. 10 (2023): 3989. http://dx.doi.org/10.3390/en16103989.

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This paper discusses and reviews the main real gas effects on the thermodynamic performance of closed Brayton cycles. Cycles with carbon dioxide as working fluids are taken as a reference and a comparison of the thermodynamic cycle efficiencies that are made with other possible working fluids (pure fluids and fluid mixtures). We fixed the reduced operating conditions, in optimal conditions, so that all working fluids had the same thermodynamic global performances. Therefore, the choice of the working fluid becomes important for adapting the cycle to the different technological requirements. Th

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Xiao, Yuhui, Yuan Zhou, Yuan Yuan, Yanping Huang, and Gengyuan Tian. "Research Advances in the Application of the Supercritical CO2 Brayton Cycle to Reactor Systems: A Review." Energies 16, no. 21 (2023): 7367. http://dx.doi.org/10.3390/en16217367.

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Amid the global emphasis on efficient power conversion systems under the “dual carbon” policy framework, the supercritical CO2 (SCO2) Brayton cycle is a noteworthy subject, owing to its pronounced efficiency, compact design, economic viability, and remarkable potential to increase the thermal cycle efficiency of nuclear reactors. However, its application across various nuclear reactor loops presents divergent challenges, complicating system design and analytical processes. This paper offers a thorough insight into the latest research on the SCO2 Brayton cycle, particularly emphasising its inte

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Liu, Tianye, Jingze Yang, Zhen Yang, and Yuanyuan Duan. "Thermo-economic optimization of supercritical CO2 Brayton cycle on the design point for application in solar power tower system." E3S Web of Conferences 242 (2021): 01002. http://dx.doi.org/10.1051/e3sconf/202124201002.

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The supercritical CO2 Brayton cycle integrated with a solar power tower system has the advantages of high efficiency, compact cycle structure, strong scalability, and great power generation potential, which can positively deal with the energy crisis and global warming. The selection and optimization of design points are very important for actual operating situations. In this paper, the thermodynamic and economic models of the 10 MWe supercritical CO2 Brayton cycle for application in solar power tower system are established. Multi-objective optimizations of the simple recuperative cycle, reheat

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Beans, E. W. "Comparative Thermodynamics for Brayton and Rankine Cycles." Journal of Engineering for Gas Turbines and Power 112, no. 1 (1990): 94–99. http://dx.doi.org/10.1115/1.2906483.

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The thermal efficiency, work per unit mass, and work per unit volume of the simple Rankine and Brayton cycles are expressed in terms of seven independent variables using a simplified thermodynamic model. By requiring equal efficiency, equal work conditions, and the same maximum cycle temperature for both cycles, two necessary relationships are established between the seven independent variables. These two relationships along with two maximum work conditions produce a method for comparing required and selected properties. These comparisons provide useful guidelines for the selection of the cycl

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Sánchez-Orgaz, Susana, Javier Rodriguez-Martín, Fernando Varela, and Javier Muñoz-Antón. "Optimizing exergy efficiency in solar-driven regenerative Brayton cycles with helium: A comparative study of four configurations for 100 MW power plants." Thermal Science, no. 00 (2024): 277. https://doi.org/10.2298/tsci240806277s.

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Solar thermal energy is a promising renewable energy source due to its low CO? emissions and cost-effective thermal storage, which surpasses electric batteries used in photovoltaic and wind systems. Despite facing challenges such as lower efficiency, high capital costs, and the intermittent nature of solar resources, advancements in manageability, storage systems, solar collection optimization, and power cycles are underway. Traditionally, subcritical steam Rankine cycles have been used in solar thermal plants but have limitations in adapting to solar resource variability and electrical demand

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Mossi Idrissa, A. K., and K. Goni Boulama. "Advanced exergy analysis of a combined Brayton/Brayton power cycle." Energy 166 (January 2019): 724–37. http://dx.doi.org/10.1016/j.energy.2018.10.117.

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Fujii, S., K. Kaneko, K. Otani, and Y. Tsujikawa. "Mirror Gas Turbines: A Newly Proposed Method of Exhaust Heat Recovery." Journal of Engineering for Gas Turbines and Power 123, no. 3 (2000): 481–86. http://dx.doi.org/10.1115/1.1366324.

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A new conceptual combination of Brayton and inverted Brayton cycles with a heat sink by intercooling, which is dubbed the mirror gas turbine, has been evaluated and proposed in this paper. Prior to such evaluations, a preliminary test on the inverted cycle without intercooling was made experimentally to confirm the actual operation. The conventional method of recuperation in gas turbines can be replaced by the mirror gas turbine with a low working temperature of about 450°C at heat exchanger. The combined cycle of Brayton/Rankine for electricity generation plant may be improved by our concept

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Chong Zhi Ken and Syamimi Saadon. "Analysis of Recuperation Supercritical Carbon Dioxide Cycle for Heat Recovery of an Aircraft Engine." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 96, no. 2 (2022): 1–9. http://dx.doi.org/10.37934/arfmts.96.2.19.

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Reducing fuel consumption and maximizing thrust power are both critical factors for aircraft engine. Various technologies have been discovered and developed to achieve these goals. One of them is perhaps by integrating a waste heat recovery system to the engine. Therefore, this study will focus on waste heat recovery technology for aircraft engine, by applying a recuperation-supercritical carbon dioxide cycle in order to reduce jet engines’ fuel consumption and minimizing fuel expenses. The analysis will be conducted by modeling and simulation using Aspen Plus software. A quantitative analysis

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Lin, Bihong, and Jincan Chen. "The Performance Analysis of a Quantum Brayton Refrigeration Cycle with an Ideal Bose Gas." Open Systems & Information Dynamics 10, no. 02 (2003): 147–57. http://dx.doi.org/10.1023/a:1024610206559.

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A Brayton refrigeration cycle using an ideal Bose gas as the working substance is simply referred to as a quantum Brayton refrigeration cycle, which consists of two constant-pressure and two adiabatic processes. The influence of quantum degeneracy on the performance of the cycle is investigated, based on the correction equation of state of an ideal Bose gas. The general expressions of the coefficient of performance, refrigeration load and work input of the cycle are calculated. The lowest temperature of the working substance and the minimum pressure ratio of the two constant-pressure processes

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Wu, C., and R. L. Kiang. "Power Performance of a Nonisentropic Brayton Cycle." Journal of Engineering for Gas Turbines and Power 113, no. 4 (1991): 501–4. http://dx.doi.org/10.1115/1.2906268.

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Work and power optimization of a Brayton cycle are analyzed with a finite-time heat transfer analysis. This work extends the recent flurry of publications in heat engine efficiency under the maximum power condition by incorporating nonisentropic compression and expansion. As expected, these nonisentropic processes lower the power output as well as the cycle efficiency when compared with an endoreversible Brayton cycle under the same conditions.

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Patel, Raj C., Diego C. Bass, Ganza Prince Dukuze, Angelina Andrade, and Christopher S. Combs. "Analysis and Development of a Small-Scale Supercritical Carbon Dioxide (sCO2) Brayton Cycle." Energies 15, no. 10 (2022): 3580. http://dx.doi.org/10.3390/en15103580.

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Carbon dioxide’s (CO2) ability to reach the supercritical phase (7.39 MPa and 304.15 K) with low thermal energy input is an advantageous feature in power generation design, allowing for the use of various heat sources in the cycle. A small-scale supercritical carbon dioxide (sCO2) power cycle operating on the principle of a closed-loop Brayton cycle is currently under construction at The University of Texas at San Antonio, to design and develop a small-scale indirect-fired sCO2 Brayton cycle, acquire validation data of the cycle’s performance, and compare the cycle’s performance to other cycle

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Chen, Lingen, Chenqi Tang, Huijun Feng, and Yanlin Ge. "Power, Efficiency, Power Density and Ecological Function Optimization for an Irreversible Modified Closed Variable-Temperature Reservoir Regenerative Brayton Cycle with One Isothermal Heating Process." Energies 13, no. 19 (2020): 5133. http://dx.doi.org/10.3390/en13195133.

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One or more isothermal heating process was introduced to modify single and regenerative Brayton cycles by some scholars, which effectively improved the thermal efficiency and significantly reduced the emissions. To analyze and optimize the performance of this type of Brayton cycle, a regenerative modified Brayton cycle with an isothermal heating process is established in this paper based on finite time thermodynamics. The isothermal pressure drop ratio is variable. The irreversibilities of the compressor, turbine and all heat exchangers are considered in the cycle, and the heat reservoirs are

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Sun, Lei, Lin Tao, Yonghui xie, Yuanjian Dang, and Yongqing Wang. "Analysis and study on the thermodynamic performance of S-CO2 simple Brayton cycle." MATEC Web of Conferences 207 (2018): 04007. http://dx.doi.org/10.1051/matecconf/201820704007.

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The S-CO2 Brayton cycle system has many characteristics such as low cost and compact structure, and is one of the hotspots in the fields of waste heat utilization, new energy and so on. In this paper, a mathematical model of the S-CO2 simple Brayton cycle is constructed, and the cyclic characteristics are analysed. The relationship between the component parameters of the system and the calculation parameters of the cycle such as the cycle efficiency and the output net work are obtained under the design conditions. Meanwhile, calculation models of turbine and compressor under off-design conditi

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Frost, T. H., B. Agnew, and A. Anderson. "Optimizations for Brayton-Joule Gas Turbine Cycles." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 206, no. 4 (1992): 283–88. http://dx.doi.org/10.1243/pime_proc_1992_206_045_02.

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Traditionally, the simple Brayton–Joule cycle has been optimized for maximum output and for minimum compressor work with inter-cooling and maximum turbine work with reheat. To these Woods et al. (1) have added optimization for peak efficiency of the simple cycle with internal irreversibilities. The results now presented include both maximum output and peak efficiency for both regenerative and intercool/reheat cycles with internal irreversibilities. Two special cases, for a regenerative cycle and for a non-regenerative cycle with both reheat and intercooling, are identified where the conditions

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Irianto, Ignatius Djoko. "DESIGN AND ANALYSIS OF HELIUM BRAYTON CYCLE FOR ENERGY CONVERSION SYSTEM OF RGTT200K." JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA 18, no. 2 (2016): 75. http://dx.doi.org/10.17146/tdm.2016.18.2.2320.

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ABSTRACTDESIGN AND ANALYSIS OF HELIUM BRAYTON CYCLE FOR ENERGY CONVERSION SYSTEM OF RGTT200K. The helium Brayton cycle for the design of cogeneration energy conversion system for RGTT200K have been analyzed to obtain the higher thermal efficiency and energy utilization factor. The aim of this research is to analyze the potential of the helium Brayton cycle to be implemented in the design of cogeneration energy conversion system of RGTT200K. Three configuration models of cogeneration energy conversion systems have been investigated. In the first configuration model, an intermediate heat exchang

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Woodward, John B. "The Rankine Topping Cycle Revisited." Journal of Ship Research 36, no. 01 (1992): 91–98. http://dx.doi.org/10.5957/jsr.1992.36.1.91.

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Cascaded thermodynamic machines are familiar in marine engineering, even if the word "cascade" is not common currency in that field. The author refers to the almost universal practice of exhausting the working fluid (air) of a diesel engine into a gas turbine (the turbocharger, usually), followed by exhausting of that working fluid into a heat exchanger that energizes the working fluid (water) of yet another turbine. If the same practice is to be described in terms of the respective power cycles, we would probably say that the cascade consists of a Rankine cycle topped by a Brayton cycle which

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Carril, José Carbia, Álvaro Baaliña Insua, Javier Romero Gómez, and Manuel Romero Gómez. "HTR-Based Power Plants’ Performance Analysis Applied on Conventional Combined Cycles." Science and Technology of Nuclear Installations 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/716572.

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In high temperature reactors including gas cooled fast reactors and gas turbine modular helium reactors (GT-MHR) specifically designed to operate as power plant heat sources, efficiency enhancement at effective cost under safe conditions can be achieved. Mentioned improvements concern the implementation of two cycle structures: (a), a stand alone Brayton operating with helium and a stand alone Rankine cycle (RC) with regeneration, operating with carbon dioxide at ultrasupercritical pressure as working fluid (WF), where condensation is carried out at quasicritical conditions, and (b), a combine

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Malaver de la Fuente, Manuel. "La relación de trabajo de retroceso de un ciclo Brayton." Ingeniería, investigación y tecnología 11, no. 3 (2010): 259–66. http://dx.doi.org/10.22201/fi.25940732e.2010.11n3.022.

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Goodarzi, Mohsen, Mohsen Kiasat, and Ehsan Khalilidehkordi. "Performance analysis of a modified regenerative Brayton and inverse Brayton cycle." Energy 72 (August 2014): 35–43. http://dx.doi.org/10.1016/j.energy.2014.04.072.

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Rindt, Karin, František Hrdlička, and Václav Novotný. "Preliminary prospects of a Carnot-battery based on a supercritical CO2 Brayton cycle." Acta Polytechnica 61, no. 5 (2021): 644–60. http://dx.doi.org/10.14311/ap.2021.61.0644.

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As a part of the change towards a higher usage of renewable energy sources, which naturally deliver the energy intermittently, the need for energy storage systems is increasing. For the compensation of the disturbance in power production due to inter-day to seasonal weather changes, a long-term energy storage is required. In the spectrum of storage systems, one out of a few geographically independent possibilities is the use of heat to store electricity, so-called Carnot-batteries. This paper presents a Pumped Thermal Energy Storage (PTES) system based on a recuperated and recompressed supercr

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Wang, Jinping, Jun Wang, Peter D. Lund, and Hongxia Zhu. "Thermal Performance Analysis of a Direct-Heated Recompression Supercritical Carbon Dioxide Brayton Cycle Using Solar Concentrators." Energies 12, no. 22 (2019): 4358. http://dx.doi.org/10.3390/en12224358.

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In this study, a direct recompression supercritical CO2 Brayton cycle, using parabolic trough solar concentrators (PTC), is developed and analyzed employing a new simulation model. The effects of variations in operating conditions and parameters on the performance of the s-CO2 Brayton cycle are investigated, also under varying weather conditions. The results indicate that the efficiency of the s-CO2 Brayton cycle is mainly affected by the compressor outlet pressure, turbine inlet temperature and cooling temperature: Increasing the turbine inlet pressure reduces the efficiency of the cycle and

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Wu, Pan, Chuntian Gao, and Jianqiang Shan. "Development and Verification of a Transient Analysis Tool for Reactor System Using Supercritical CO2 Brayton Cycle as Power Conversion System." Science and Technology of Nuclear Installations 2018 (September 2, 2018): 1–14. http://dx.doi.org/10.1155/2018/6801736.

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Supercritical CO2 Brayton cycle is a good choice of thermal-to-electric energy conversion system, which owns a high cycle efficiency and a compact cycle configuration. It can be used in many power-generation applications, such as nuclear power, concentrated solar thermal, fossil fuel boilers, and shipboard propulsion system. Transient analysis code for Supercritical CO2 Brayton cycle is a necessity in the areas of transient analyses, control strategy study, and accident analyses. In this paper, a transient analysis code SCTRAN/CO2 is developed for Supercritical CO2 Brayton Loop based on a homo

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Wang, Shugang, Shuangshuang Li, Shuang Jiang, and Xiaozhou Wu. "Analysis of the Air-Reversed Brayton Heat Pump with Different Layouts of Turbochargers for Space Heating." Buildings 12, no. 7 (2022): 870. http://dx.doi.org/10.3390/buildings12070870.

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The air-reversed Brayton cycle produces charming, environmentally friendly effects by using air as its refrigerant and has potential energy efficiency in applications related to space heating and building heating. However, there exist several types of cycle that need to be discussed. In this paper, six types of air-reversed Brayton heat pump with a turbocharger, applicable under different heating conditions, are developed. The expressions of the heating coefficient of performance (COP) and the corresponding turbine pressure ratio are derived based on thermodynamic analysis. By using these expr

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