Relevant bibliographies by topics / Modeling compressor plant

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Modeling compressor plant'

Author: Grafiati
Published: 28 May 2022

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Journal articles on the topic "Modeling compressor plant"

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Ghosh, Arindam. "Accurate noise modeling for petrochemical plants - impact of compressor Piping." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 4 (2021): 2412–19. http://dx.doi.org/10.3397/in-2021-2130.

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Compressor piping is a dominant noise source in petrochemical plants with large centrifugal compressors. Acoustic insulation is used on compressor suction, discharge and recycle lines as a measure to mitigate noise radiating from compressor piping. This paper will demonstrate using case studies the importance of acoustic insulation on compressor piping as the primary and most cost effective noise control method for both community and in-plant noise. Case studies include the predicted and measured noise levels obtained during post startup noise surveys. This paper will also illustrate that to obtain good agreement with measured noise levels it is imperative to accurately model the piping sources following the actual piping layout and account for distance attenuation. A cost-benefit analysis of using complete compressor houses and/or acoustic blankets will be presented along with the efficacy of various types of acoustic insulation including elastomeric foam and aerogel based insulation systems. Different acoustic requirements for hot and cold insulation systems will also be presented.
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Borovkov, Aleksey, Igor Voinov, Yuri Galerkin, et al. "Design, Plant Test and CFD Calculation of a Turbocharger for a Low-Speed Engine." Applied Sciences 10, no. 23 (2020): 8344. http://dx.doi.org/10.3390/app10238344.

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Various approaches and techniques are used to design centrifugal compressors. These are engineering one-dimensional and quasi-three-dimensional programs, as well as CFD Computational Fluid Dynamics (CFD) programs. The final judgment about the effectiveness of the design is given by testing the compressor or its model. A centrifugal compressor for an internal combustion engine turbocharger was designed jointly by the Research Laboratory “Gas Dynamics of Turbomachines” of Peter the Great St. Petersburg Polytechnic University (SPbPU) and RPA (Research and Production Association) “Turbotekhnika”. To check its dimensionless characteristics, the compressor was tested with two geometrically similar impellers with a diameter of 175 (TKR 175E) and 140 mm (TKR 140E). The mathematical model of the Universal Modeling Method calculates the efficiency in the design mode for all tests of both compressors with an error of 0.89%, and the efficiency for the entire characteristic with an error of 1.55%. The characteristics of the TKR 140E compressor were calculated using the ANSYS commercial CFD software. For TKR-140E, a significant discrepancy in the value of the efficiency was obtained, but a good agreement in the area of operation, which was not achieved in previous calculations. According to the calculation, the work coefficient is overestimated by 9%, which corresponds to the results of previous calculations by the authors.
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Song, Xiao Na, Yan Ping Hu, Jun Zheng, Pei Li, Xiao Xia Hou, and Wen Yi Liu. "Thermodynamic Modeling of Air Reservoir for CAES Power Plant." Advanced Materials Research 732-733 (August 2013): 209–12. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.209.

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CAES (Compressed Air Energy Storage) is an energy storage method which preserves electric energy in the form of air pressure potential energy. As the storage space, the internal air pressure of air reservoir significantly affects the performance of the CAES system. Based on a thorough study of variable pressure air reservoir of CAES, this paper puts forward a thermodynamic modeling method which could be perfectly applied in air pressure and temperature variation analysis. Modeling parameters are fitted by serving Huntorf power plant in Germany as reference case; results show that the obtained pressure curves match the actual curves, which in turn demonstrate the high accuracy of the model presented. By comparing different pressures under several working conditions, it is clear that alternately air releasing and air inflation effectively reduce throttling loss and the energy consumption of compressor, also system efficiency is improved.
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Zhu, Lei, and Hong Fu Zuo. "Predicting Compressor of Gas Turbine Power Plant On-Line Washing Interval Using Proportional Hazards Model." Advanced Materials Research 452-453 (January 2012): 195–99. http://dx.doi.org/10.4028/www.scientific.net/amr.452-453.195.

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Due to compressor fouling, gas turbine efficiency decreases over time, resulting in decreased power output of the plant. To counteract the effects of compressor fouling, compressor on-line and off-line washing procedures are used. The present research is aimed to propose a method of mathematical modeling of offline washing interval which will be estimated as the RUL of compressor based on Proportional hazards model. Application of the proposed prediction method to the case of Civil Aero-engine proved its effectiveness.
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Mazini, Mohammad Taghi, Alireza Yazdizadeh, and Mohammad Hossein Ramezani. "Dynamic modeling of multi-effect desalination with thermal vapor compressor plant." Desalination 353 (November 2014): 98–108. http://dx.doi.org/10.1016/j.desal.2014.09.014.

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Kikstra, J. F., and A. H. M. Verkooijen. "Dynamic Modeling of a Cogenerating Nuclear Gas Turbine Plant—Part I: Modeling and Validation." Journal of Engineering for Gas Turbines and Power 124, no. 3 (2002): 725–33. http://dx.doi.org/10.1115/1.1426086.

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The high-temperature gas-cooled reactor is a promising concept for inherently safe nuclear power generation. This article deals with dynamic modeling of a combined heat and power plant, based on a helium-cooled reactor in combination with a closed-cycle gas turbine system. A one-dimensional flow model describing the helium flow and the two-phase water flow is used through the whole plant, with different source terms in different pieces of equipment. A stage-by-stage model is produced for the radial compressor and axial turbine. Other models include the recuperator, water/helium heat exchangers, a natural convection evaporator, valves, etc. In Part II the model will be used to analyze the dynamic behavior and to design a control system.
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Shamoushaki, Moein, Pouriya H. Niknam, Lorenzo Talluri, Giampaolo Manfrida, and Daniele Fiaschi. "Development of Cost Correlations for the Economic Assessment of Power Plant Equipment." Energies 14, no. 9 (2021): 2665. http://dx.doi.org/10.3390/en14092665.

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A comprehensive cost correlation analysis was conducted based on available cost correlations, and new equipment cost correlation models were proposed based on QUE$TOR modeling. Cost correlations for various types of equipment such as pumps, compressors, heat exchangers, air coolers, and pressure vessels were generated on the basis of extracted cost data. The models were derived on the basis of robust multivariable regression with the aim of minimizing the residuals by using the genetic algorithm. The proposed compressor models for both centrifugal and reciprocating types showed that the Turton cost estimation for carbon steel compressor and Matche’s and Mhhe’s data were compatible with the generated model. According to the results, the cost trend in the Turton correlation for carbon steel had a somewhat lower estimation than these correlations. Further, the cost trend of the Turton correlation for carbon steel pressure vessels was close to the presented model trend for both bullet and sphere types. The Turton cost trend for U-tube shell-and-tube heat exchangers with carbon steel shell and stainless steel tube was close to the proposed heat exchanger model. Furthermore, the Turton cost trend for the flat-plate heat exchanger using carbon steel was similar to the proposed model with a slight difference.
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Drozdov, A. A., Yu B. Galerkin, O. A. Solovyeva, K. V. Soldatova, and A. A. Ucehovscy. "Mathematical model of the 9th version Universal modeling method: features and results of identification." Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering 4, no. 4 (2020): 28–40. http://dx.doi.org/10.25206/2588-0373-2020-4-4-28-40.

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The Universal modeling method is a complex of computer programs for calculating the characteristics and optimal design of centrifugal compressors based on mathematical models of efficiency and head. Practical experience allows improving the mathematical models that underlie the Method. Determining the non-incidence inlet in a blade cascade is an important part of calculating the compressor gasdynamic characteristics. In the 8th version of the Universal modeling method, a formula is used to calculate the direction of the critical stream line, containing an empirical coefficient X. The practice of application has shown that the value of the empirical coefficient changes the amount of losses in the impeller in off-design flow rates. A new scheme for modeling velocity diagrams is proposed. It is made for the stage operation mode corresponding to the zero incidence angle. The successful use of the model for the impeller made it possible to extend it to the vane diffuser and return channel. Several other improvements are made too. A new mathematical model is developed for calculating the flow parameters in the exit nozzles of centrifugal compressor stage. The mathematical model for calculating the flow parameters in the vaneless diffusers is modernized. The applicability boundary of the new model is expanded to a range of diffusers of low consumption stages with a relative width of up to 0,006. The resulting mathematical model is identified by the test results of two family model stages and plant tests of industrial compressors
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Gabibov, Ibrahim Abulfaz, Rabiya Seydulla Nadjafkulieva, and Sevinj Malik Abasova. "MODELING THE HEAT TRANSFER PROCESS IN REFRIGERATION UNITS USED IN THE OIL INDUSTRY." EUREKA: Physics and Engineering 6 (November 30, 2019): 57–62. http://dx.doi.org/10.21303/2461-4262.2019.001056.

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Currently, the main volume of associated petroleum gas production in Azerbaijan is carried out at offshore fields. About 30 % of this volume is used for SOCAR’s own technological needs of the oil company (to maintain the level of oil production). And the rest are transported to onshore facilities and further for processing to a gas processing plant. Subsequently, dry and purified gas is sent through a gas pipeline system for use by the population, or to a network of trunk pipelines for further export. When gas is transferred to the gas lift system and ashore, it is compressed in compressors, as a result of which the temperature of the working agent rises. The latter dramatically reduces the level of operational safety of the entire process. Based on the foregoing, ensuring the required gas quality at the outlet of the compressor unit is an important and urgent task. Currently used in the gas cooling system, shell-and-tube type refrigeration units have several advantages: high heat transfer coefficient, operability in low and high pressure modes, simplicity of design and service. Along with this, these units are distinguished by large dimensions and high metal consumption, noise effect, vibration, etc. A new design of a heat exchanger for cooling associated petroleum gas at the outlet of gas motor compressors is proposed. Based on the modeling of the heat transfer process, mathematical models have been obtained that make it possible to adequately evaluate the cooling process in the proposed refrigeration device.
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Zhang, Huisheng, Shilie Weng, and Ming Su. "Dynamic Modeling on the Hybrid Molten Carbonate Fuel Cell-Gas Turbine Bottoming Cycle." Journal of Fuel Cell Science and Technology 2, no. 2 (2004): 94–98. http://dx.doi.org/10.1115/1.1867973.

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The intention of this paper is to present the dynamic models for the molten carbonate fuel cell (MCFC)-gas turbine hybrid cycle. This paper analyzes the performance of various components in the hybrid power plant, such as the compressor, turbine, recuperator, generator, fuel cell stack, etc. The modular simulation models of these components are presented. Based on the dynamic simulation modeling principle, one bottoming hybrid MCFC-microturbine cycle was studied to carry out the simulation. The simulation result can reflect the dynamic response of the hybrid power plant.
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Dissertations / Theses on the topic "Modeling compressor plant"

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Соколов, Сергій Вікторович, Сергей Викторович Соколов, Serhii Viktorovych Sokolov та О. М. Соловйов. "Оптимізація системи управління компресорної установки". Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/40965.

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Сучасний етап розвитку техніки вимагає оптимізації компресорних систем з метою підвищення їх ефективності та скорочення енерговитрат. У цьому питанні досить велика увага приділяється проектуванню та розрахунковій оптимізації компресорів, але загальне завдання моделювання компресорної установки як складної системи вирішена недостатньо. Використання математичного моделювання компресорної системи дає можливість розв‘язання широкого спектра задач, в тому числі задачі оптимізації управління.
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Temchenko, S. O. "Object modeling compressor plants with screw executive mechanism." Thesis, Видавництво СумДУ, 2006. http://essuir.sumdu.edu.ua/handle/123456789/21493.

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Chukanova, E. "Modelling of screw compressor plant operation under intermittent conditions." Thesis, City, University of London, 2016. http://openaccess.city.ac.uk/15825/.

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Compressor plant frequently operates under unsteady conditions. This is due to pressure fluctuations, variable flow demand, or unsteady inlet conditions, as well as shaft speed variation. Also, following demand, compressor plants often work intermittently with frequent starts and stops. This may cause premature wear, decrease of compressor performance and even failure, which might cost millions of pounds to industry in downtime. However, there is still a lack of published data which describes intermittent plant behaviour, or predicts the effects of unsteady operation upon compressor plant performance. Thus, there appears to be a need to develop a mathematical model to calculate compressor plant performance during intermittent operating conditions and to verify this model with experimental data. Accordingly, this thesis describes an experimental and analytical study of screw compressor plant operating under unsteady conditions. For this purpose a one-dimensional model of the processes within a compressor was used, based on the differential equations of conservation of mass and energy, extended to include other plant components, such as storage tanks, control valves and connecting pipes. The model can simulate processes in both oil-free and oil-injected compressor plants during transient operation, including the effects of sudden changes in pressure, speed and valve area. Performance predictions obtained from the model gave good agreement with test results. This model can, therefore, be used to predict a variety of events, which may occur in everyday compressor plant operation.
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Mata, Martha Patricia Guerrero. "Finite element modelling of hot plane strain compression testing." Thesis, University of Sheffield, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245644.

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Santo, Luca. "AA-CAES physical modelling: integration of a 1D TES code and plant performance analysis." Thesis, Uppsala universitet, Tillämpad kärnfysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-360448.

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The focus of this thesis work was the development of an approachto couple a previosly existing Thermal Energy Storage (TES) modelwritten in C++ with a Simulink/Simscape plant model to simulate anAdvanced Adiabatic Compressed Air Energy Storage (AA-CAES) plant.After the creation and validation of such tool, the complete modelwas used to run simulations, with the aim of assessing the AA-CAESplant's performance under multiple patterns of charge anddischarge.Most of the works found in the literature only provide values ofstorage efficiency obtained from analytical approaches, whilethose that use simulation tools provide average values ofefficiencies when the plant is performing a series of identicalcycles of charge and discharge. During this thesis project,instead, simulations were performed for consecutive irregularcycles determined as the plant response to the electric grid powerrequest. The average efficiency values obtained provide thereforea better representation of how the plant would perform in realapplications.The results show that, under the assumptions made, the AA-CAESplant's overall storage efficiency is influenced very weakly byalterations of the charge-discharge patterns, and that goodperformances can be expected not only for identical chargedischargeconsucutive cycles, but for any pattern that observesthe cavern pressure limits, as long as the thermal energy storageis sized wisely.In addition, a sensitivity analysis was performed in order toassess the influence of turbomachinery efficiency on overallstorage efficiency, for a specified plant layout. The results showthat the turbine efficiency is the most affecting parameter to theplant's performance, while the impact of the main compressors'sinefficiency is mitigated by the thermal recovery that takes placein the TES.The present work confirms that AA-CAES is a promising technologyand that storage efficiencies above 70% can be achieved even inrealistic production scenarios.Finally, future steps for more accurate simulations of plants'performances and more detailed energy production scenarios areproposed.MSc ET 18007Examinator: Joakim WidénÄmnesgranskare: Ane HåkanssonHandledare:
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Luo, Xiaobo. "Process modelling, simulation and optimisation of natural gas combined cycle power plant integrated with carbon capture, compression and transport." Thesis, University of Hull, 2016. http://hydra.hull.ac.uk/resources/hull:14005.

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Reducing CO₂ emissions from fossil fuel-fired power plants is a significant challenge, technically and economically. Post-combustion carbon capture (PCC) using amine solvents is widely regarded as the most promising technology that can be commercially deployed for carbon capture from fossil fuel-fired power plants. However, for its application at full commercial scale, the main barrier is high cost increment of the electricity due to high capital costs and significant energy penalty. This thesis presents the studies on optimal design and operation of Monoethanolamine (MEA)-based PCC process and the integrated system with natural gas combined cycle (NGCC) power plant through modelling, simulation and optimisation, with the aim to reduce the cost of PCC commercial deployment for NGCC power plants. The accuracy of optimisation depends on good predictions of both process model and economic model. For the process modelling, the philosophy with its framework was analysed for this reactive absorption (RA) process. Then the model was developed and validated at three stages. In the first stage, the predictions of thermodynamic modelling were compared with experimental data of CO₂ solubility in aqueous MEA solutions. The results show the combination of correlations used in this study has higher accuracy than other three key published contributions. Then key physical properties of MEA-H₂O-CO₂ system were also validated with experimental data from different publications. Lastly, a steady state process model was developed in Aspen Plus® with rate-based mass transfer and kinetic-controlled reactions. The process model was validated against comprehensive pilot plant experiment data, in terms of absorption efficiency and thermal performance of the integrated system. The cost model was developed based on the major equipment costs provided by vendors after detailed engineering design in a benchmark report. The uncertainty of this method could be in the range of from −15% to 20%, instead of other empirical methods with uncertainty of from −30% to 50%. The cost model was integrated into the process model by coding Fortran subroutine in Aspen Plus®. Using this integrated model, the optimisation studies were carried out for the PCC process only. The impact of key variables variation was also analysed. Subsequently, the scope of this study was extended to cover different sections of the integrated system including a 453MWe NGCC power plant, PCC process, CO₂ compression trains and CO₂ transport pipeline network. For the integration of NGCC power plant with PCC process and CO₂ compression, exhaust gas recirculation (EGR) technology was investigated and showed significant economic benefit. A specific supersonic shock wave compressor was adopted for the CO₂ compression and its heat integration options with power plant and PCC process were studied. For the study on the CO₂ transport pipeline network planned in the Humber region of the UK, a steady state process model was developed using Aspen HYSYS®. The process model was integrated with Aspen Process Economic Analyzer® (APEA), to carry out techno-economic evaluations for different options of the CO₂ compression trains and the trunk onshore\offshore pipelines respectively. The results show the optimal case has an annual saving of 22.7 M€ compared with the base case. In the end, optimal operations of NGCC power plant integrated with whole carbon capture and storage (CCS) chain under different market conditions were studied. Levelised cost of electricity (LCOE) is formulated as the objective function. The optimal operations were investigated for different carbon capture level under different carbon price, fuel price and CO₂ transport and storage (T&S) price. The results show that carbon price needs to be over €100/ton CO₂ to justify the total cost of carbon capture from the NGCC power plant and needs to be €120/ton CO₂ to drive carbon capture level at 90%. The results outline the economic profile of operating an NGCC power plant integrated with CCS chain. It could help power plants operators and relevant government organizations for decision makings on the commercial deployment of solvent-based PCC process for power plans.
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Leidermark, Daniel. "Modelling of constitutive and fatigue behaviour of a single-crystal nickel-base superalloy." Licentiate thesis, Linköping University, Linköping University, Solid Mechanics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-56288.

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<p>In this licentiate thesis the work done in the project KME410 will be presented. The overall objective of this project is to evaluate and develop tools for designing against fatigue in single-crystal nickel-base superalloys in gas turbines. Experiments have been done on single-crystal nickel-base superalloy specimens in order to investigate the mechanical behaviour of the material. The constitutive behaviour has been modelled and verified by simulations of the experiments. Furthermore, the  microstructural degradation during long-time ageing has been investigated with  respect to the component’s yield limit. The effect has been included in the  constitutive model by lowering the resulting yield limit. Finally, the fatigue crack  initiation of a component has been analysed and modelled by using a critical plane approach.</p><p>This thesis is divided into three parts. In the first part the theoretical framework, based upon continuum mechanics, crystal plasticity and the critical plane approach, is derived. This framework is then used in the second part, which consists of three included papers. Finally, in the third part, details are presented of the used  numerical procedures.</p>
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Leidermark, Daniel. "Crystal plasticity and crack initiation in a single-crystal nickel-base superalloy : Modelling, evaluation and appliations." Doctoral thesis, Linköpings universitet, Hållfasthetslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-72093.

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In this dissertation the work done in the projects KME-410/502 will be presented.The overall objective in these projects is to evaluate and develop tools for designingagainst fatigue in single-crystal nickel-base superalloys in gas turbines. Experimentshave been done on single-crystal nickel-base superalloy specimens in order toinvestigate the mechanical and fatigue behaviour of the material. The constitutivebehaviour has been modelled and veried by FE-simulations of the experiments.Furthermore, the microstructural degradation during long-time ageing has been investigatedwith respect to the material's yield limit. The eect has been includedin the constitutive model by lowering the resulting yield limit. Moreover, the fatiguecrack initiation of a component has been analysed and modelled by using acritical plane approach in combination with a critical distance method. Finally, asan application, the derived single-crystal model was applied to all the individualgrains in a coarse grained specimen to predict the dispersion in fatigue crack initiationlife depending on random grain distributions. This thesis is divided into three parts. In the rst part the theoretical framework,based upon continuum mechanics, crystal plasticity, the critical plane approachand the critical distance method, is derived. This framework is then used in thesecond part, which consists of six included papers. Finally, in the third part, detailsof the used numerical procedures are presented.
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Theyssier, Marie-Christine. "Compression plane à chaud de cristaux d'aluminium et d'aluminium-magnésium : de la déformation à chaud à la recristallisation." Grenoble INPG, 1996. http://www.theses.fr/1996INPG4209.

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L'anisotropie des proprietes des toles d'aluminium est fonction des textures et microstructures developpees pendant les differentes etapes de la mise en forme. Pour simuler le laminage a chaud, nous avons deforme en compression plane biencastree a chaud (200ct00c, 0. 1. 5, 10#-#3s#-#10#-#1s#-#1) des cristaux d'al et d'al-1%mg (monocristaux, bicristaux et polycristaux). La texture de deformation a 400c de polycristaux d'al est de type l et celle obtenue pour al-1%mg est a dominante c/s. La deformation non imposee #d#l, #d#t des monocristaux d'orientation l d'al a 400c est inferieure a celle obtenue a 20c (facteur 1/3). Ceci est explique par l'activation d'un glissement non octaedrique 112 aux faibles valeurs du parametre de zener-hollomon z. Pour l'orientation c, c'est le glissement 100 qui est observe a t+00c. Le modele viscoplastique avec introduction de glissements non octaedriques simule correctement ces evolutions. A 400c, pour l'orientation l d'al-mg, le glissement est de type octaedrique et #d#l, #d#t est superieure au cas d'al pur. L'orientation cube al-mg se stabilise a chaud de meme que pour al mais pour de plus faibles valeurs de z. Les cellules de dislocations dans les grains d'al s'organisent en deux familles de blocs de cellules formant un damier sous-structural regulier. Les desorientations locales de bloc a bloc sont alternees le plus souvent autour de dt (pour l, quel que soit alors que pour c et s, peut atteindre 20 pour 1). Dans les grains d'al-mg, les tailles de blocs sont deux fois plus petites et les desorientations locales n'excedent pas 3. En recristallisation, le joint de grain presentant la vitesse de migration la plus grande apres deformation a 400c est le joint cube/s (avantage en mobilite et en terme de difference d'energies stockees dans les deux grains). Le joint s+/s- de type migre aussi par siem mais avec une cinetique plus lente. Une nouvelle orientation proche de cube apparait par recristallisation au joint s/l
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Reguillet, Vincent. "Caractérisation d’un système pile à combustible en vue de garantir son démarrage et fonctionnement à température ambiante négative." Thesis, Besançon, 2013. http://www.theses.fr/2013BESA2035/document.

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La pile à combustible est un générateur électrique en voie d'atteindre une maturité technologique et commerciale. Pour que ce moyen de production d'énergie puisse concurrencer des systèmes similaires, tels que les batteries et les groupes électrogènes, des obstacles restent néanmoins à franchir. L'un d'entre eux est la capacité de la pile à démarrer et fonctionner à température ambiante négative. Afin d'étudier le comportement à froid d'un système de type PEMFC, nous proposons la définition de plusieurs critères de performances exergétiques adaptés au fonctionnement de chaque module du système. Les modules sont ensuite caractérisés à température ambiante négative à l'aide de bancs d'essais dédiés. A partir des résultats expérimentaux obtenus, différents modèles empiriques ou semi-analytiques sont alors présentés pour la batterie, le compresseur et l'humidificateur. D'autre part, un modèle analytique thermique à l'échelle des stacks est réalisé. Il permet notamment de reproduire l'élévation en température de la pile au cours d'un démarrage à froid. Enfin, à l'issue de l'analyse des résultats expérimentaux et des modèles, des recommandations destinées à favoriser le démarrage à froid du système sont fournies. En suivant ces recommandations, il est ainsi possible de démarrer le système pile de manière fiable à une température ambiante de -10 °C<br>Fuel cells are electric generators on the way to achieve technological and commercial maturity. Nevertheless, to compete with similar energy generating systems such as batteries and engines generators, fuel cells must overcome several obstacles. Among them, the ability to start at negative ambient temperatures is decisive. In order to study the behaviour of a PEMFC system in cold weather, we propose different exergetic criteria adapted to the working conditions of each module. Thanks to dedicated test benches, the modules are then characterized at negative ambient temperature. From experimental results, empirical or semi-analytical models are introduced for the battery, the compressor and the humidifier. On the other hand, a thermal analytical model at the stacks scale is developed. It enables to reproduce the fuel cell temperature rise during a cold start up. Eventually, at the end of the analysis of experimental results and models, recommendations are given to favour the cold start of the system. By following these recommendations, the fuel cell cold start at -10 °C is ensured
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Books on the topic "Modeling compressor plant"

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W. L. A. H. Van den Broek. Numerical modelling of plane strain compression tests using a classical and cosserat continuum. UMIST, 1996.

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Book chapters on the topic "Modeling compressor plant"

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Xiao, Rui, and Manoranjan Paul. "Efficient Compression of Hyperspectral Images Using Optimal Compression Cube and Image Plane." In MultiMedia Modeling. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14445-0_15.

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Koseki, Junichi, Job Munene Karimi, Yukika Tsutsumi, Sajjad Maqbool, and Takeshi Sato. "Cyclic Plane Strain Compression Tests on Dense Granular Materials." In Soil Stress-Strain Behavior: Measurement, Modeling and Analysis. Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6146-2_36.

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Umetsu, Kimio. "Strength Properties of Sand by Tilting Test, Box Shear Test and Plane Strain Compression Test." In Soil Stress-Strain Behavior: Measurement, Modeling and Analysis. Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6146-2_6.

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Bauer, Erich, Linke Li, and Mohammadkeya Khosravi. "Modelling Grain Damage Under Plane Strain Compression Using a Micro-polar Continuum." In Springer Series in Geomechanics and Geoengineering. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56397-8_67.

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Brötz, Nicolas, Manuel Rexer, and Peter F. Pelz. "Mastering Model Uncertainty by Transfer from Virtual to Real System." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77256-7_4.

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AbstractTwo chassis components were developed at the Technische Universität Darmstadt that are used to isolate the body and to reduce wheel load fluctuation.The frequency responses of the components were identified with a stochastic foot point excitation in a hardware-in-the-loop (HiL) simulation environment at the hydropulser. The modelling of the transmission behaviour influence of the testing machine on the frequency response was approximately represented with a time delay of $$10\,\mathrm {ms}$$ 10 ms in the frequency range up to $$25\,\mathrm {Hz}$$ 25 Hz . This is considered by a Padé approximation. It can be seen that the dynamics of the testing machine have an influence on the wheel load fluctuation and the body acceleration, especially in the natural frequency of the unsprung mass. Therefor, the HiL stability is analysed by mapping the poles of the system in the complex plane, influenced by the time delay and virtual damping.This paper presents the transfer from virtual to real quarter car to quantify the model uncertainty of the component, since the time delay impact does not occur in the real quarter car test rig. The base point excitation directly is provided by the testing machine and not like in the case of the HiL test rig, the compression of the spring damper calculated in the real-time simulation.
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Azevedo, Nuno Monteiro, José V. Lemos, and João Rocha de Almeida. "Discrete Element Particle Modelling of Stone Masonry." In Computational Modeling of Masonry Structures Using the Discrete Element Method. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-5225-0231-9.ch007.

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Circular Particle Models (PM) are a class of discrete elements which has been increasingly used for detailed analysis in rock and concrete structures. There have been few applications to masonry, but the potential of these techniques appears significant, due to their proven ability to simulate fracture processes through random particle assemblies representing quasi-brittle materials at the grain scale. The present chapter presents the fundamentals of this approach and reviews some previous applications of PM models to masonry. The model capabilities are first exemplified by simple models involving a few irregular blocks formed by particles. Irregular stone masonry wall specimens under compression and under in-plane shear loading are then presented. In these models both the units and the mortar are represented by circular particles, and failure processes through the joints or through joints and stones are analyzed. The main issues regarding the use of these models are finally discussed.
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Timothy, S. P., H. L. Yiu, J. M. Fine, and R. A. Ricks. "Modelling evolution of microstructure during hot-rolling by plane-strain compression." In Production, Refining, Fabrication and Recycling of Light Metals. Elsevier, 1990. http://dx.doi.org/10.1016/b978-0-08-040416-5.50015-1.

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Garcí a-Matos, J., M. Sanz-Bobi, A. Muñoz, and A. Sola. "Fault detection through physical modelling in an axial flow compressor of a combined-cycle power plant." In Advances in Safety, Reliability and Risk Management. CRC Press, 2011. http://dx.doi.org/10.1201/b11433-63.

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Conference papers on the topic "Modeling compressor plant"

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Giacomelli, Enzo, Marco Passeri, Stefano Giusti, Fabrizio Zagli, and Stefano Generosi. "Modeling of Pressure Pulsations for LDPE Reciprocating Compressors and Interaction With Mechanical System." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58522.

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The combination of booster-primary and hyper compressors reaches very high pressures in Low Density Polyethylene Plants. Pressure and flow pulsations due to the unsteady flow generate an acoustic energy that interacts with the mechanical system of the plant, causing mechanical vibrations. Pressure pulsation and vibration control on relatively high pressure piping is necessary to prevent failures caused by cyclic stresses due to both internal pressure fluctuations and vibrations generated by the compressor. To increase the compressor performance, safety and reliability designers require advanced methods of simulation to evaluate piping and compressor behavior during the initial stage of the project. The paper will investigate the modeling of the pulsation with the influence of fluid-dynamic aspect related to the gas and the relevant system interaction.
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Giacomelli, Enzo, Marco Passeri, Fabrizio Zagli, and Stefano Generosi. "Control of Pulsations and Vibrations in Hypercompressors for LDPE Plants." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2281.

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Always growing capacities, size of machines and performance requirements and often changing plant layout arrangement, determine a continuous challenge for designers of machines and plants. For hyper compressors and connected piping system, the goals of safety and reliability can be achieved only with a deep analysis of all operating conditions to determine pulsations and vibration effects. Innovative methods of simulation, modeling and technologies improve the possibility to evaluate piping and compressor behavior, allowing to obtain the efficiency and a smooth and safe plant operation.
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Tauveron, Nicolas, Francis Leboeuf, and Pascal Ferrand. "Dynamic Modeling of a Nuclear Gas Turbine Plant: Application to Surge Prediction." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90142.

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This work concerns the dynamic modeling of closed cycle gas turbine with a nuclear heat source. The paper focuses on a particular safety question: the consequences of a hypothetical large break accident. A model of the whole circuit of the Gas Fast Reactor (GFR) has been built using a specific turbo-machine description. The compressor modeling presented in a separate paper [1] is completed with turbine modeling. Transient simulation results point out the importance of the location of the pipe rupture: in some detailed cases, back flow through the core can occur during the first seconds. The other safety question concerns the capacity of the power conversion unit to extract the decay heat from the nuclear core after the break event.
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Arsie, Ivan, Alfonso Di Domenico, Luca Pappalardo, Cesare Pianese, and Marco Sorrentino. "Steady-State Analysis and Energetic Comparison of Air Compressors for PEM Fuel Cell Systems." In ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2006. http://dx.doi.org/10.1115/fuelcell2006-97223.

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The aim of the work is to perform a comparative study of the compression system for a polymer electrolyte membrane (PEM) fuel cell. This study wishes also to address some key-features on the suitability of different compressors with respect to the main system design issues (e.g. energy balance, system performance and control). According to the technologies currently considered as being able to meet fuel cell system requirements, sliding vane, twin-screw and centrifugal compressors have been studied. The analysis has been performed making use of a modeling approach based on both thermodynamic description of the plant and synthesis of experimental efficiency data. Altogether, the results indicate that the centrifugal compressor should be preferred due to its higher efficiency as compared to the other compressors analyzed. Nevertheless, specific applications (e.g automotive field) may redirect the selection of the optimal compression device towards the other typologies, because of the highly fluctuating power demands and the issues associated with the narrow centrifugal compressor operation range.
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Haq, Inam U., and Ahmed I. Bu-Hazza. "Modeling and Computation of Fouling of a 36MW Multistage Centrifugal Compressor Train Operating in a Cracked Gas Environment." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0229.

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Cracked gas compressor fouling, which results from polymerization and saturated heavy hydrocarbons in olefins plant, remains one of the leading factors responsible for decreasing ethylene production revenues. This key equipment performance susceptibility to fouling has been studied in this paper. An analytical technique was developed based on the measured geometrical dimensions of aerodynamic components of the compressor train. The analytical model, capable of predicting performance at clean and progressive fouling conditions, of 27 stages of compression is detailed. Simulation results derived from model are compared with in-situ measured and mechanical design data of the compressor and good correspondence was obtained. Simulated fouling revealed more drop in efficiency of latter stages as a result of fouling of early stages. Current practice to combat compressor fouling is reviewed. A better location is proposed to install additional injection nozzles in vicinity of diffusers to carry out effective washing to decelerate fouling accumulation.
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Moisseytsev, Anton, and James J. Sienicki. "Modeling of the SNL S-CO2 Loop With ANL Plant Dynamics Code." In 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icone20-power2012-54548.

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The ANL Plant Dynamics Code (PDC) for the analysis of supercritical carbon dioxide (S-CO2) Brayton cycle power converters has been under development at Argonne National Laboratory for several years. In previous years, limited validation of the PDC models on an individual basis was carried out using experimental data obtained from facilities directed at individual components. Recently, experimental data from the SNL/BNI small-scale S-CO2 Brayton cycle demonstration that is being assembled in a staged fashion has been provided to ANL. The loop configuration with a single turbo-alternator-compressor (TAC) was modeled with the Plant Dynamics Code and the performance prediction of individual components and the entire loop obtained from the PDC was compared with the experimental data. Overall, reasonably good agreement is obtained for steady state conditions around the loop when a value is inferred for the heat loss downstream of the turbine such that a steady state loop energy balance can be established.
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Ebrahimi, P., H. Karrabi, S. Ghadami, H. Barzegar, S. Rasoulipour, and M. Kebriyaie. "Thermodynamic Modeling and Optimization of Cogeneration Heat and Power System Using Evolutionary Algorithm (Genetic Algorithm)." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-23026.

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A gas-turbine cogeneration system with a regenerative air preheater and a single-pressure exhaust gas boiler serves as an example for application of CHP Plant. This CHP plant which can provide 30 MW of electric power and 14kg/s saturated steam at 20 bars. The plant is comprised of a gas turbine, air compressor, combustion chamber, and air pre-heater as well as a heat recovery steam generator (HRSG). The design Parameters of the plant, were chosen as: compressor pressure ratio (rc), compressor isentropic efficiency (ηac), gas turbine isentropic efficiency (ηgt), combustion chamber inlet temperature (T3), and turbine inlet temperature (T4). In order to optimally find the design parameters a thermoeconomic approach has been followed. An objective function, representing the total cost of the plant in terms of dollar per second, was defined as the sum of the operating cost, related to the fuel consumption. Subsequently, different pars of objective function have been expressed in terms of decision variables. Finally, the optimal values of decision variables were obtained by minimizing the objective function using Evolutionary algorithm such as Genetic Algorithm. The influence of changes in the demanded power on the design parameters has been also studied for 30, 40 MW of net power output.
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Fouladi, Soheil, and Hamid Saffari. "Modeling and Exergy and Exergoeconomic Optimization of a Gas Turbine Power Plant Using a Genetic Algorithm." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39577.

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In this paper, the thermodynamic modelling of a gas turbine power plant in Iran is performed. Also, a computer code has been developed based on Matlab software. Moreover, both exergy and exergoeconomic analysis of this power plant have been conducted. To have a good insight into this study, the effects of key parameters such as compressor pressure ratio, gas turbine inlet temperature (TIT), compressor and turbine isentropic efficiency on the total exergy destruction, total exergy efficiency as well as total cost of exergy destruction have been performed. The modelling results have been compared with an actual running power plant located in Yazd city, Iran. The results of developed code have shown reasonable agreement between the simulation code results and experimental data obtained from power plant. The exergy analysis revealed that the combustion chamber is the must exergy destructor in comparison with other components. Also, its exergy efficiency is less than other components. This is due to the high temperature difference between working fluid and burner temperature. In addition, it was found that by the increase of TIT, the exergy destruction of this component can be reduced. On the other hand, the cost of exergy destruction is high for the combustion chamber. The effects of design parameters on exergy efficiency have shown that increase in the air compressor ratio and TIT, increases the total exergy efficiency of the cycle. Furthermore, the results have revealed that by the increase of TIT by 350°C, the cost of exergy destruction is decreased about 22%. Therefore, TIT is the best option to improve the cycle losses. In addition, an optimization using a genetic algorithm has been conducted to find the optimal solution of the plant.
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Mizobe, Yu, Yoshifumi Mori, Takenori Nakamura, and Takashi Saito. "Study on Modeling About Some Forces Related to Dynamics Responses During Operation of Reciprocating Compressors." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72150.

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To avoid discontinuation during long-term continuous operation in plants, a reliable monitoring system for the state diagnosis is strongly expected. However, occurring troubles of various facilities in a plant aren’t simple. We proposed a sophisticated estimation method to diagnosis the state for reciprocating compressors. Our monitoring system uses both the measuring data in the factory and the analytical results based on the mathematical model, which can express the dynamic behavior about the reciprocating compressor. The mathematical model has multi degrees of freedom and the model parameters are identified to estimate the state change. To realize the reliable monitoring, we have to establish estimation and diagnosis method for any change of the operation state. In this paper, we discuss a dynamic model that is able to analyze the dynamics responses of the reciprocating compressor during operation based on the measurement data. We show that the viscous damping coefficients are rather smaller than the spring constants of the parallel elements and the only behavior in the horizontal direction is affected by the damping character. To express the vertical acceleration in time history, we examine the dependency of time histories about acceleration during operation upon the crank angle and propose modified generating forces in the connecting parts.
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Khalilarya, Shahram, Samad Jafarmadar, and Arzhang Abadi. "Exegetic Modeling and Second Law Based Optimization of Cogeneration Heat and Power System Using Evolutionary Algorithm (Genetic Algorithm)." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22113.

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A gas-turbine cogeneration system with a regenerative air preheater and a single-pressure exhaust gas boiler serves as an example for application of CHP Plant. This CHP plant which can provide 30 MW of electric power and 14kg/s saturated steam at 20 bars. The plant is comprised of a gas turbine, air compressor, combustion chamber, and air pre-heater as well as a heat recovery steam generator (HRSG). The design Parameters of the plant, were chosen as: compressor pressure ratio (re), compressor isentropic efficiency (ηac), gas turbine isentropic efficiency (ηgt), combustion chamber inlet temperature (T3), and turbine inlet temperature (T4). In order to optimally find the design parameters a thermoeconomic approach has been followed. An objective function, representing the total cost of the plant in terms of dollar per second, was defined as the sum of the operating cost, related to the fuel consumption. Subsequently, different pars of objective function have been expressed in terms of decision variables. Finally, the optimal values of decision variables were obtained by minimizing the objective function using Evolutionary algorithm such as Genetic Algorithm. The influence of changes in the demanded power on the design parameters has been also studied for 30, 40 MW of net power output.
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