Relevant bibliographies by topics / Centrifugal Gas Compressors

Academic literature on the topic 'Centrifugal Gas Compressors'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Centrifugal Gas Compressors"

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Zhao, Yuanyang, Qichao Yang, Liansheng Li, Jun Xiao, Yue Shu, and Qian Zhang. "Experimental research on stability enhancement for centrifugal compressors using active control casing treatment system." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 231, no. 5 (May 17, 2017): 333–43. http://dx.doi.org/10.1177/0957650917708494.

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Centrifugal compressors are widely used in many fields, where they become unstable when operated at the edge of the surge line. This paper presents a method, which is based on the active control casing treatment to enhance the operating stability of the centrifugal compressor. To investigate the effect of the active control casing treatment system on the performance of a centrifugal compressor, a test rig with rotating speed of 15,000 r/min was built up. The experimental results show that the active control casing treatment system can significantly decrease the surge flow rate and extend the envelope of stable operation via injecting gas (so-called the control gas) into the casing of the centrifugal compressor. The tested maximal enhancement ability is 30.55% at the condition of 10,586 r/min when the flow rate of the control gas is 2.5 m3/min. It was found that the enhancement ability increases with the decrease of the rotating speed of the centrifugal compressor. The increment of the control gas flow rate results in a smaller surge flow rate of the centrifugal compressors.
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Al Ghafri, Yazeed Sulaiman, and Aydin Azizi. "Centrifugal Compressor Behavior in Upstream Business." Applied Mechanics and Materials 823 (January 2016): 459–64. http://dx.doi.org/10.4028/www.scientific.net/amm.823.459.

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Centrifugal compressors are critical rotating equipments in industrial processes, especially for natural gas applications. Compressible gas exhibit complex flow behavior that requires a thorough understanding to ensure extended, safe and stabilized compressor performance. Without, Centrifugal compressors can undergo surge which restricts compressor operational range and jeopardize the safety of its components. Dynamic simulation then becomes necessary to evaluate performance and to implement integrated control schemes. This paper will investigate how centrifugal compressor responds to changes at inlet conditions i.e. increase in pressure, temperature and molecular weight. The effect of these changes on compressor performance will be simulated using Unisim Design dynamic compressor model. Results show that compressor operation is easily influenced by changes in inlet condition and that integrated control schemes are effective in safeguarding compressor from surge.
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Lebedev, A. A., A. A. Aksenov, S. M. Lebedeva, A. Yu Petrov, and Minh Hai Nguyen. "Improving the reliability of the compressor unit using the wavelet transform method." E3S Web of Conferences 140 (2019): 05013. http://dx.doi.org/10.1051/e3sconf/201914005013.

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Centrifugal compressors are an integral part of modern production in such industries as gas transmission, oil refining, metallurgical, machine-building, mining, as well as in electric and heat power engineering. Interruptions in the operation or failures of compressors lead to decrease in profit or large material loss. Conditions should be created for the safe (stable) operation of centrifugal compressors. Surge is global (complete) loss of stability, an unacceptable phenomenon for a centrifugal compressor. Compressor surge protection must function during operation. The algorithms used to protect centrifugal compressors against surge have some drawbacks, which makes it impossible to reliably prevent surges. There are many methods for analyzing rapidly changing processes in the flow part of a centrifugal compressor. The wavelet theory is the most accurate and modern method. The use of the wavelet transform method for signal processing allows us to solve the problems of analyzing non-stationary processes of a centrifugal compressor to expand the acceptable range of work and build reliable operation of the anti-surge diagnostic system. In the future, it is possible to use other basic wavelet functions, for comparison and selection of the most suitable one, for the analysis of unsteady signals in a centrifugal compressor.
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Kalinkevych, M., V. Ihnatenko, O. Bolotnikova, and O. Obukhov. "Design of high efficiency centrifugal compressors stages." Refrigeration Engineering and Technology 54, no. 5 (October 31, 2018): 4–9. http://dx.doi.org/10.15673/ret.v54i5.1239.

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The modern trend in compressor industry is an extension of the use of multi-shaft centrifugal compressors. Multi-shaft compressors have a number of advantages over single-shaft. The design of such compressors gives opportunity to use an axial inlet for all stages and select the optimum rotational speed for each pair of impellers, which, along with the cooling of the gas after each stage, makes possible to achieve high levels of efficiency. The design of high-efficiency centrifugal compressor stages can be performed on the basis of highly effective stage elements. Such elements are: impellers with spatial blades, vaned and channel diffusers with given velocity distribution. In this paper, impellers with axial-radial blades are considered. The blade profile is determined by the specified pressure distribution along the blade. Such design improves the structure of the gas flow in the interblade channels of the impeller, which leads to an increase in its efficiency. Characteristics of loss coefficients from attack angles for impellers were obtained experimentally. Vaned and channel diffusers, the characteristics of which are given in this article, are designed with the given velocity distribution along the vane. Compared to the classic type of diffuser, such diffusers have lower losses and a wider range of economical operation. For diffusers as well as for impellers, characteristics of loss coefficients from attack angles were obtained. High efficient impellers and diffusers and obtained gas-dynamic characteristics were used in the design of a multi-shaft compressor unit for the production of liquefied natural gas. The initial pressure of the unit is 3bar. The obtained characteristics of loss coefficients from attack angles for the considered impellers and diffusers make it possible to calculate the gas-dynamic characteristics of high-efficient centrifugal compressors stages. The high-efficient centrifugal compressors stages can be designed using high-efficient elements, such as: impeller with spatial blades and vaned diffuser with given velocity distribution.
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Pu, Hong Bin, Yun Ping Zheng, Yu Chun Wang, Bai Song Cai, and Qi Liu. "Research on Modeling of Compressor Characteristics for Sichuan-East Gas Transmission Pipeline Project." Advanced Materials Research 468-471 (February 2012): 2393–98. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.2393.

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Optimized operation of compressor stations is of great importance for energy saving of Sichuan-East transmission pipeline at high flow rate. However, it is difficult to build an accurate mathematical model to describe the performance curves of centrifugal compressor due to the wide range of rotary speed. The achievements of this thesis are shown as follows. Firstly, the mathematic models for performance curves of the Euramerican centrifugal compressors were established. The optimized regression coefficients were solved rapidly and accurately by Zhan Chong-xi method. Secondly, the compressor ratio, polytropic efficiency, shaft power, outlet pressure, polytropic head and outlet temperature of centrifugal compressors at different flow rates and rotating speeds were calculated accurately. These results provides excellent modeling methods and reliable mathematics models of operating and managing compressor of Sichuan-East gas transmission pipeline. It was found that the lowest correlative index of six optimized models was 0.9772, and the maximum error is 4.2869%.
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Rekstin, A., V. Semenovskiy, K. Soldatova, Y. Galerkin, and K. Sokolov. "The simulation of gas-dynamic characteristics of centrifugal compressors in turbo-expander units." E3S Web of Conferences 124 (2019): 01008. http://dx.doi.org/10.1051/e3sconf/201912401008.

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Prof. Y. Galerkin and his team have developed and completed designs of 19 single-stage centrifugal compressors for turbo-expander packaged units applying Universal Modeling Method for the company “Turbokholod JSC” since 2005. The most powerful compressor is 6500 kW. The highest delivery pressure is 12 MPa. One hundred fifteen turbo-expander packaged units with total capacity 400 000 kW were manufactured, installed and were in operation in December 2018. The gas-dynamic characteristics of compressors comply with technical specification when operated within given range of initial temperatures and initial and final pressures up to 16 combinations for some compressors. The dimensionless characteristics of the compressor stages vary within the range of design parameters: flow rate coefficient 0.0278-0.0697, loading factor 0.43-0.71. The simulation of gas-dynamic characteristics of one of the designed compressors by the newest version of mathematical model is presented as an example, demonstrating the simulation features and effectiveness.
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Kalinkevych, Mykola, and Andriy Skoryk. "Design Method for Channel Diffusers of Centrifugal Compressors." International Journal of Rotating Machinery 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/589357.

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The design method for channel diffusers of centrifugal compressors, which is based on the solving of the inverse problem of gas dynamics, is presented in the paper. The concept of the design is to provide high pressure recovery of the diffuser by assuming the preseparation condition of the boundary layer along one of the channel surfaces. The channel diffuser was designed with the use of developed method to replace the vaned diffuser of the centrifugal compressor model stage. The numerical simulation of the diffusers was implemented by means of CFD software. Obtained gas dynamic characteristics of the designed diffuser were compared to the base vaned diffuser of the compressor stage.
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Afandy, Muhammad Arif, Ifani P. Ramadhani, and Totok R. Biyanto. "Gas Turbine Compressor Configuration Analysis for Production and Efficiency Optimization at PT Saka Indonesia Pangkah Ltd." IOP Conference Series: Earth and Environmental Science 927, no. 1 (December 1, 2021): 012031. http://dx.doi.org/10.1088/1755-1315/927/1/012031.

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Abstract Gas Turbine Compressors are used by Saka Indonesia Pangkah Ltd. in upstream oil and gas facilities either to boost hydrocarbon products to downstream facilities or to lift liquid hydrocarbon as a common artificial method. As production rate declining leads to gas supply deficiency to the compressors, the operating point move to surge line away from the best efficiency point. Gas feed shortage affecting the compressor’s performance which contributed to head and flow capacity. This condition is then calculated and simulated using UNISIM Design Simulator to get optimum configuration results. The simulation was performed at the same gas turbine shaft power output of each compressor. Two cases of centrifugal compressors configuration with different functions and performance are studied. Due to process dynamic conditions, constraint parameter is considered as per desired operating point. This paper also analyses techno-economic aspects between individual and serial pipelines arrangement of the two compressors by evaluating operational data and design calculation. Subsequently, this study produces assessment observations associated with the compressor performance both in individual and serial configuration and eventually analyses the rate of fuel consumption in the gas turbines as the main driver. The case study shows serial arrangement between MPC-1 and GLC with same gas turbine shaft power as individual configuration can reduce fuel consumption up to 47 kg/hr. It saves as much as USD 7,569.96 per day at low demand and USD 7,569.96 at high-demand cases.
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Baba, Toshiaki, Koumei Fujioka, Hirotoshi Arihara, Yoshitaka Baba, and Takuya Iwata. "EXPERIMENTAL EVALUATION OF PERFORMANCE AND MECHANICAL RELIABILITY FOR HIGH PRESSURE CO2 INTEGRALLY GEARED COMPRESSOR." Journal of the Global Power and Propulsion Society 4 (August 20, 2020): 128–44. http://dx.doi.org/10.33737/jgpps/124724.

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Energy saving has become a trend as well as a countermeasure for global environmental issues. It can be one of the efficient solutions for reducing energy consumptions by adopting integrally geared compressors instead of inline compressors for industrial plants. The development of key technologies for the design centrifugal compressor such as CFD, FEM, Rotor dynamic Analysis has enabled integrally geared centrifugal compressors for higher pressure applications than ever. A commercial size, 5 stages integrally geared CO2 centrifugal compressor of 20MPaG discharge pressure level was designed, manufactured and evaluated the fluid dynamic performances and rotor stability. It was installed in OEM’s factory and the full load and full pressure test was carried out using real CO2 gas. The actual compressor fluid dynamic performance has shown superior results even at high pressure supercritical gas conditions at the high pressure stages of the compressor. The mechanical performances such as rotor vibration and bearing temperature were also measured and observed that the vibration was substantially low and within safe limits even at high pressure operating conditions above 20MPaG. Also the authors established a novel on Direct Rotor Excitation Method to experimentally investigate the rotor stability even at a high operating pressure level of 20MPaG. With this technique the measurements of the actual rotor natural frequencies and the damping ratios (log decrement) during high pressure operating conditions provided more precise results rather than conventional casing excitation method. The open impeller blade vibration was measured during running condition by using a non-contact blade vibration measurement technique. This measurement results revealed that impeller blades stress against the centrifugal force and the external excitation force was very low compared to the allowable stress value of the impeller material. The fluid dynamic characteristics and mechanical reliability are assessed as acceptable including super critical gas condition of CO2 gas.
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Kurz, Rainer. "Natural Gas." Mechanical Engineering 133, no. 04 (April 1, 2011): 52. http://dx.doi.org/10.1115/1.2011-apr-7.

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This article discusses the importance of gas turbines, centrifugal compressors and pumps, and other turbomachines in processes that bring natural gas to the end users. To be useful, the natural gas coming from a large number of small wells has to be gathered. This process requires compression of the gas in several stages, before it is processed in a gas plant, where contaminants and heavier hydrocarbons are stripped from the gas. From the gas plant, the gas is recompressed and fed into a pipeline. In all these compression processes, centrifugal gas compressors driven by industrial gas turbines or electric motors play an important role. Turbomachines are used in a variety of applications for the production of oil and associated gas. For example, gas turbine generator sets often provide electrical power for offshore platforms or remote oil and gas fields. Offshore platforms have a large electrical demand, often requiring multiple large gas turbine generator sets. Similarly, centrifugal gas compressors, driven by gas turbines or by electric motors are the benchmark products to pump gas through pipelines, anywhere in the world.
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Dissertations / Theses on the topic "Centrifugal Gas Compressors"

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Jonson, Lance Gordon. "Surge testing of natural gas pipeline centrifugal compressors." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0010/MQ31322.pdf.

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Budinis, Sara. "Control and operation of centrifugal gas compressors, with an emphasis on CO2 compression." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/55458.

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The PhD project focuses on operation and control of centrifugal gas compressors for carbon dioxide application. The analysis of the industrial background and the review of the academic literature have highlighted some research needs consisting in: - Improvement of the performance of the pressure controller of the compressor - Integration of pressure and surge control - Analysis of the effect of the recycle configuration on the operation of the compressor. Control configurations have been proposed in order to: - Reduce the interaction between control loops - Guarantee the stable and safe operation of the control system - Deal with partial and full recycle operation in supercritical carbon dioxide applications. Dynamic modelling and simulations have been employed in order to analyse the effect of boundary disturbances on the operation of the open and closed loop compression system. The performance of the system has been evaluated by means of graphical representation of controlled and manipulated variables and also by means of proposed performance indicators. These indicators focus on specific aspects of the operation of a compressor such as control performance, power consumption and amount of gas recycled. The results of the thesis demonstrate that better pressure control reduces the risk of surge. Moreover the interaction between pressure controller and surge controller can be avoided by employing a linear model predictive controller. The controller has been tuned according to various control purposes such as energy saving, surge avoidance or pressure control performance. The results also demonstrate that the recycle configuration influences surge occurrence, control stability and power consumption of the compression station. This phenomenon is emphasised when dealing with supercritical carbon dioxide because of the high density of the fluid.
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De, Villiers Lodewyk Christoffel Barend. "Design of a centrifugal compressor for application in micro gas turbines." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/96052.

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Thesis (MEng)--Stellenbosch University, 2014.
ENGLISH ABSTRACT: This thesis details the methodology for developing a centrifugal compressor for application in a Micro Gas Turbine (MGT). This research forms part of a larger project, namely project Ballast, initiated by the South African Air Force (SAAF) in conjunction with Armscor. The methodology encompasses the development of a mean-line code that makes use of 1-dimensional theory in order to create an initial centrifugal compressor geometry which includes a rotor as well as radial vaned diffuser. This is followed by a Computational Fluid Dynamics (CFD) simulation process during which the compressor is optimised in order to maximise its performance. Before manufacturing a Finite Element Analysis (FEA) is done in order to ensure that the rotor does not fail during testing. The testing of the compressor is done to compare the numerical results with the experimental results and in so doing confirms the design process. A previous student had designed a rotor by making use of a mean-line code as well as a CFD optimisation process. The rotor had a measured total-static pressure ratio of roughly 2.8 at 121 kRPM and a total-total isentropic efficiency of 79.1 % at said rotational speed. The inclusion of a vaned diffuser resulted in a higher total-static pressure ratio and accordingly the compressor designed in this report has a CFD determined total-static pressure ratio of 3.0. The efficiency would however drop and as such a total-total isentropic efficiency of 76.5 % was determined theoretically. The theoretical results correlated well with the experimental results and as such it was concluded that the design methodology developed was sound.
AFRIKAANSE OPSOMMING: Hierdie tesis bespreek die metodologie vir die ontwikkeling van ‘n sentrifugale kompressor vir toepassing in ‘n Mikro-Gasturbine (MGT). Die tesis vorm deel van ‘n groter projek, genaamd die Ballast projek, wat deur die Suid-Afrikaanse Lugmag (SALM) daargestel is in samewerking met Krygkor. Die metodologie behels die ontwikkeling van ‘n middel-lyn kode wat gebruik maak van 1-dimensionele teorie om die aanvanklike geometrie van die kompressor te skep. Die geometrie bevat beide die rotor asook die gelemde radiale diffusor. Hierdie proses word gevolg deur ‘n Berekeningsvloeidinamika (BVD) simulasie waartydens die kompressor geoptimeer word om sodoende die verrigting ten volle te verbeter. Voordat vervaardiging plaasvind word ‘n Eindige Element Analise (EEA) toegepas om te verseker dat die rotor nie sal faal tydens toetse nie. Die toetse word gedoen sodat die eksperimentele resultate met die numeriese resultate vergelyk kan word. Sodoende word die proses waardeur die kompressor ontwikkel word bevestig. ‘n Vorige student het ‘n rotor ontwerp deur gebruik te maak van ‘n middel-lyn kode asook ‘n BVD optimerings proses. Die rotor het ‘n gemete totaal-statiese drukverhouding van ongeveer 2.8 teen 121 kRPM gelewer en ‘n totaal-totale isentropiese benutingsgraad van 79.1 % teen dieselfde omwentelingspoed. Met die insluiting van ‘n gelemde radiale diffuser word ‘n hoër totaal-statiese druk verhouding verwag en as sulks lewer die nuut-ontwerpte kompressor soos in die tesis bespreek ‘n teoretiese totaal-statiese drukverhouding van 3.0. Die benutingsgraad sal egter daal en daarvolgens het die nuwe kompressor ‘n totaal-totale isentropiese benutingsgraad van 76.5 % gelewer. Die eksperimentele resultate het goed ooreengestem met die teoretiese resultate en as sulks was dit besluit dat die ontwerps-metodologie goed is.
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Калінкевич, Микола Васильович, Николай Васильевич Калинкевич, Mykola Vasylovych Kalinkevych, and Н. А. Андрущенко. "Многовальные центробежные компрессоры для сжатия природного газа низкого давления." Thesis, Сумский государственный университет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/45652.

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Природный газ дает больше тепла и сгорает более полно, чем другие ископаемые виды топлива. Но его запасы могут быть исчерпаны по разным подсчетам через 40 - 100 лет. Решением данной проблемы может стать расконсервация скважин, которые были законсервированы в связи с низким пластовым давлением газа. Именно для таких условий может быть использован многовальный центробежный компрессор для низких значений давления на входе.
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Обухова, Анастасія Олександрівна, Анастасия Александровна Обухова, and Anastasiia Oleksandrivna Obukhova. "Анализ эффективности элементов проточной части ступени центробежного компрессора при немодельных изменениях её геометрии." Thesis, Сумский государственный университет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/45731.

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В работе представлены результаты расчетно-экспериментального исследования влияния немодельных изменений меридионального сечения среднерасходной ступени центробежного компрессора (ЦК). Экспериментально было подтверждено линейное смещение интегральных газодинамических характеристик на соответствующее значение условного коэффициента расхода при расширении меридионального сечения базовой ступени ЦК на 10%. Методами вычислительной гидродинамики было расширено количество исследуемых ступеней с немодельными изменениями.
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Krige, David Schabort. "Performance evaluation of a micro gas turbine centrifugal compressor diffuser." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80119.

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Thesis (MScEng)--Stellenbosch University, 2013.
ENGLISH ABSTRACT: Micro gas turbines used in the aerospace industry require high performance with a compact frontal area. These micro gas turbines are often considered unattractive and at times impractical due to their poor fuel consumption and low cycle efficiency. This led to a joint effort to investigate and analyze the components of a particular micro gas turbine to determine potential geometry and performance improvements. The focus of this investigation is the radial vaned diffuser which forms part of a centrifugal compressor. The size of the diffuser is highly constrained by the compact gas turbine diameter. The micro gas turbine under consideration is the BMT 120 KS. The radial vaned diffuser is analyzed by means of 1-D and 3-D (CFD) analyses using CompAero and FINETM/Turbo respectively. The aim is to design a diffuser that maximizes the total-to-static pressure recovery and mass flow rate through the compressor with minimal flow losses. An experimental test facility was constructed and the numerical computations were validated against the experimental data. Three new diffusers were designed, each with a different vane geometry. The static-to-static pressure ratio over the radial diffuser was improved from 1.39 to 1.44 at a rotational speed of 120 krpm. The static pressure recovery coefficient was improved from 0.48 to 0.73 with a reduction in absolute Mach number from 0.47 to 0.22 at the radial diffuser discharge.
AFRIKAANSE OPSOMMING: Mikro-gasturbines wat in die lugvaart industrie gebruik word, vereis ‘n hoë werkverrigting met ‘n kompakte frontale area. Hierdie gasturbines word menigmaal onaantreklik geag weens swak brandstofverbruik en n lae siklus effektiewiteit. Dit het gelei tot ‘n gesamentlike projek om elke komponent van ‘n spesifieke mikro-gasturbine te analiseer en te verbeter. Die fokus van dié ondersoek is die radiale lem diffusor wat deel vorm van ‘n sentrifugaalkompressor. Die deursnee van die diffusor word deur die kompakte gasturbine diameter beperk. Die mikro gasturbine wat ondersoek word is die BMT 120 KS. Die radiale lem diffusor word geanaliseer deur middel van 1-D en 3-D (BVD) berekeninge met behulp van CompAero en FINETM/Turbo onderskeidelik. Die doelwit is om ‘n diffusor te ontwerp met ‘n verhoogde massavloei en drukverhouding oor die kompressor. ‘n Eksperimentele toetsfasiliteit is ingerig om toetse uit te voer en word gebruik om numeriese berekeninge te bevestig. Die staties-tot-stasiese drukstyging oor die radiale diffusor is verbeter van 1.39 tot 1.44 by ‘n omwentelingspoed van 120 kopm. Die statiese drukherwinningskoeffisiënt is verbeter van 0.48 tot 0.73 met ‘n vermindering in die absolute Machgetal vanaf 0.47 tot 0.22 by die radiale diffusor uitlaat.
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Mele, Erik. "Wet Gas Compressor Performance : A Numerical Investigation of Thermal-Equilibrium in a Centrifugal Compressor Exposed to Wet Gas." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18533.

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Wet gas compression and subsea compression technology has gained increased focus in the recent years. With aging fields on the Norwegian continental shelf and new discoveries in arctic regions, subsea compression could boost aging gas fields and make remote fields profitable where extraction is difficult. Wet-gas compression could reduce the need for expensive scrubbers and separators and this would be a major economic enhancement to subsea processing. There is currently no standard for wet gas compression as the ASME PTC 10 [1] offers no guidance on this. The complex phenomena encountered in wet-gas compression is not yet fully understood. The present work is concerned with the thermal discharge equilibrium of a wet-gas compressor, as this will strongly influence the performance calculations of the compressor. If there is thermodynamic equilibrium at the discharge, then measurements and calculations become relatively simple. If not, then everything becomes more complex.A numerical simulation model was established, both for dry and wet gas. An open loop test rig at NTNU was used to compare calculations with experiments to validate the model. This was done with great success for dry gas. For wet gas accurate measurements were not obtained. The working fluid was an air-water mixture, where water was injected into almost saturated air.To calculate the possible gas discharge temperature under heavily wet conditions, a power balance was also set up. The uncertainties in the frequency converter and the torque meter were too great for reliable power calculations. A new measurement technique has been proposed to be able to measure the gas temperature, utilizing a cyclone to separate the gas prior to the measurements. This technique has not been tested.The numerical model showed small signs of non-equilibrium conditions at GMF 0,8. The discharge temperature proved as large as 0,16°C or 0,15°C depending on the droplet diameter. These differences are still significant when calculating the polytropic efficiency. Evaporation proved to be virtually non-existent in the calculations, due to almost saturated conditions at the inlet. Still, validation against wet-gas experiments is needed to confirm the findings.
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Van, der Merwe Bosman Botha. "Design of a centrifugal compressor impeller for micro gas turbine application." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71610.

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Thesis (MScEng)--Stellenbosch University, 2012.
ENGLISH ABSTRACT: The use of micro gas turbines (MGTs) for the propulsion of unmanned aerial vehicles (UAVs) has become an industry standard. MGTs offer better performance vs. weight than similar sized, internal combustion engines. The front component of an MGT serves the purpose of compressing air, which is subsequently mixed with a fuel and ignited to both power the turbine which drives the compressor, and to produce thrust. Centrifugal compressors are typically used because of the high pressure ratios they deliver per stage. The purpose of this project was to design a centrifugal compressor impeller, and to devise a methodology and the tools with which to perform the aforementioned. A compressor impeller adhering to specific performance and dimensional requirements was designed. The new compressor was designed using a mean-line performance calculation code. The use of the code was vindicated through comparison with the results from a benchmark study. This comparison included mean-line, Computational Fluid Dynamic (CFD), and experimental results: the new design mean-line results were compared to the results of CFD simulations performed on the same design. The new design was optimised using an Artificial Neural Network (ANN) and Genetic Algorithm. Prior to and during optimisation, the ANN was trained using a database of sample CFD calculations. A Finite Element Analysis (FEA) was done on the optimised impeller geometry to ensure that failure would not occur during operation. According to CFD results, the final design delivered good performance at the design speed with regards to pressure ratio, efficiency, and stall margin. The mechanical stresses experienced during operation were also within limits. Experimental results showed good agreement with CFD results of the optimised impeller. Keywords: micro gas turbine, centrifugal compressor, impeller, CFD, experimental, optimisation, FEA.
AFRIKAANSE OPSOMMING: Die gebruik van mikrogasturbines vir die aandrywing van onbemande vliegtuie het ‟n standaard geword in die industrie. Mikrogasturbines bied beter werkverrigting teen gewig as binnebrandenjins van soortgelyke grote. Hierdie eienskap verseker dat mikrogasturbines as aandryfmotors vir onbemande vliegtuie uiters voordelig is. Die voorste komponent van ‟n mikrogasturbine dien om lug saam te pers, wat dan met brandstof gemeng en daarna aan die brand gesteek word om krag aan die kompressor en stukrag te voorsien. Sentrifugaalkompressors word tipies gebruik as gevolg van die hoë drukverhoudings wat hierdie komponente per stadium kan lewer. Die doel van hierdie projek was om ‟n sentrifugaalkompressor te ontwerp, en ‟n metode en die hulpmiddels te ontwikkel om laasgenoemde uit te voer. ‟n Kompressor rotor wat voldoen het aan sekere werkverrigtings en dimensionele vereistes is ontwerp. Die nuwe kompressor rotor is met behulp van 1-dimensionele werkverrigting-berekeningskode ontwerp. Die berekeningsakkuraatheid van die kode en díé van ‟n kommersiële Berekenings Vloeidinamika pakket is bevestig deur die berekende resultate te vergelyk met die van eksperimente. Die nuwe rotor is gevolglik deur middel van ‟n Kunsmatige Neurale Netwerk en Genetiese Algoritme geoptimeer. Die Kunsmatige Neurale Netwerk is voor en gedurende optimering deur Berekenings Vloeidinamika simulasies opgelei. Die meganiese sterkte van die geoptimeerde rotor is nagegaan met behulp van ‟n Eindige Element Analise. Dit is gedoen om te verseker dat die rotor nie sal faal by die bedryfspunt nie. Berekenings Vloeidinamika resultate het getoon dat die finale rotor ontwerp ‟n goeie werkverrigting lewer by die ontwerpspoed, met betrekking tot drukverhouding, bennutingsgraad, en stakingsmarge. Eksperimentele resultate het goeie ooreenstemming met die Berekenings Vloeidinamika resultate van die geoptimeerde rotor getoon. Sleutelwoorde: mikrogasturbine, sentrifigaalkompressor, rotor, Berekenings Vloeidinamika, eksperimenteel, optimering, Eindige Element Analise.
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Kurauchi, Sandro Kojiro. "Design and off-design analysis of a centrifugal compressor for natural gas." Instituto Tecnológico de Aeronáutica, 2012. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2102.

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Centrifugal is the main compressor type used in process industries and pipelines. This work presents the design of a centrifugal compressor in three steps. The first step is the preliminary design that has an unidimensional treatment and is heavily based on empirical data. Then, using the quasi-ortogonals method, the flow in the meridional plane of the impeller channel is analysed and the blade geometry improved. The last step consists of the compressor flow analysis through Computational Fluid Dynamics (CFD) techniques using a commercial software in order to verify any deficiencies in the methodology applied in the preliminary design.
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Luiten, Ruben Vincent. "Performance improvement of the Rover 1S/60 Gas Turbine Compressor." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97049.

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Thesis (MEng)--Stellenbosch University, 2015.
ENGLISH ABSTRACT: The use of gas turbines in central receiver solar power plant cycles has become an increasingly popular research topic. This has led to the need to investigate and analyse the effect of the solar receiver on the gas turbine cycle. The aim of this thesis is to construct an experimental gas turbine setup to accommodate further research on utilizing solar energy to power gas turbines. The gas turbine under consideration is the Rover Gas Turbines 1S/60. The focus of this investigation is the centrifugal compressor of the gas turbine. An increase in static pressure is required for the gas turbine to cope with anticipated pressure drops in the central receiver that will be part of the gas turbine cycle. The standard compressor design is analysed by means of 3-D (CFD) analysis using CFX® and experimental data. The new centrifugal compressor is designed by means of 1-D and 3-D (CFD) analysis using CompAero and CFX®. The aim is to design a compressor that maximizes the total-to-static pressure ratio. The size of the compressor is highly constrained by the geometry parameters of the gas turbine. Since the turbine rotor will remain unchanged, the power input, mass flow rate and rotational speed must stay the same. The experimental setup was build and the numerical results of the standard compressor were validated against the experimental results. A new centrifugal compressor was designed. The total-to-static pressure ratio was increased from 2.50 to 3.30 at an operating speed of 46 krpm. The efficiency of the compressor was improved from 63.8% to 85.6%. The input power of the new compressor design deviated 1.6% from the set benchmark, and 1.3% from the numerical data of the standard compressor.
AFRIKAANSE OPSOMMING: Die gebruik van gasturbines in sonkragstasiesiklusse met ’n sentrale ontvanger het gegroei tot ’n gewilde navorsingsonderwerp. Dit het gelei tot die behoefte om die effek van die sonontvanger op die gasturbinesiklus te ondersoek en te analiseer. Die doel van hierdie tesis is om ’n eksperimentele gasturbine opstelling te bou vir verdere navorsing oor die benutting van sonenergie om ’n gasturbine aan te dryf. Die gasturbine in oorweging is die Rover Gas Turbines 1S/60. Die fokus van hierdie ondersoek is die sentrifugale kompressor van die gasturbine. ’n Toename in statiese druk word benodig vir die gasturbine om die verwagte drukverlies in die sentrale ontvanger, wat deel uit maak van die gasturbinesiklus, te hanteer. Die standaard kompressor ontwerp is geanaliseer deur middel van 3-D Berekenings Vloeimeganika (BVM) analises met behulp van CFX® en eksperimentele data. Die nuwe sentrifugale kompressor is ontwerp deur middel van 1-D en 3-D BVM analises met behulp van CompAero en CFX®. Die doel is om ’n kompressor te ontwerp wat die totale-tot-statiese drukverhouding maksimeer. Die grootte van die kompressor is beperk deur die geometrie van die gasturbine omhulsel. Aangesien die turbinerotor onveranderd sal bly, moet die insetdrywing, massa-vloeitempo en rotasiespoed dieselfde bly. Die eksperimentele opstelling is gebou en die numeriese resultate van die standaard kompressor is teenoor die eksperimentele resultate gevalideer. ’n Nuwe sentrifugale kompressor is ontwerp. Die totale-tot-statiese drukverhouding is verhoog van 2.50 tot 3.30 teen ’n rotasiespoed van 46 000 omwentelings per minuut. Die doeltreffendheid van die kompressor is verbeter van 63.8% tot 85.6%. Die insetdrywing van die nuwe kompressor ontwerp het met 1.6% afgewyk van die vasgestelde maatstaf, en met 1.3% van die numeriese data van die standaard kompressor.
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Books on the topic "Centrifugal Gas Compressors"

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Sapiro, Leon. Aerodynamic performance of centrifugal compressors for gas and oil applications. New York: ASME, 2007.

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Parker, Philip M. The 2007-2012 World Outlook for New Stationary Centrifugal and Axial Gas Compressors Excluding Natural Gas Compressors. ICON Group International, Inc., 2006.

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The 2006-2011 World Outlook for New Stationary Centrifugal and Axial Gas Compressors Excluding Natural Gas Compressors. Icon Group International, Inc., 2005.

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Standard 617 Centrifugal Compressors for Petroleum:: Chemical & Gas Service Industry. 6th ed. Amer Petroleum Inst, 1995.

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A, Clark David, Wood Jerry R, United States. Army Aviation Research and Technology Activity. Propulsion Directorate., and Lewis Research Center, eds. Effect of area ratio on the performance of a 5.5:1 pressure ratio centrifugal impeller. [Cleveland, Ohio: National Aeronautics and Space Administration, Lewis Research Center, 1986.

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The 2006-2011 World Outlook for New Stationary Centrifugal and Axial Natural Gas Compressors. Icon Group International, Inc., 2005.

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Parker, Philip M. The 2007-2012 World Outlook for New Stationary Centrifugal and Axial Natural Gas Compressors. ICON Group International, Inc., 2006.

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Czechowski, Edward S. Critical factors in the application of a diesel engine drive on a centrifugal gas compressor: A Master's project in Industrial Technology. 1996.

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Kollmann, Karl, Calum E. Douglas, and S. Can Gülen. Turbo/Supercharger Compressors and Turbines for Aircraft Propulsion in WWII: Theory, History and Practice—Guidance from the Past for Modern Engineers and Students. ASME, 2021. http://dx.doi.org/10.1115/1.884676.

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This book is a unique blend of history, technology review, theoretical fundamentals, and design guide. The subject matter is primarily piston aeroengine superchargers – developed in Germany during the Second World War (WWII) – which are centrifugal compressors driven either by the main engine crankshaft or by an exhaust gas turbine. The core of the book is an unpublished manuscript by Karl Kollmann, who was a prominent engineer at Daimler-Benz before and during the war. Dr. Kollmann’s manuscript was discovered by Calum Douglas during his extensive research for his earlier book on piston aeroengine development in WWII. It contains a wealth of information on aerothermodynamic and mechanical design of centrifugal compressors in the form of formulae, charts, pictures, and rules of thumb, which, even 75 years later, constitute a valuable resource for engineering professionals and students. In addition to the translation of the original manuscript from German, the authors have completely overhauled the chapters on the aerothermodynamics of centrifugal compressors so that the idiosyncratic coverage (characteristic of German scientific literature at that time) is familiar to a modern reader. Furthermore, the authors added chapters on exhaust gas turbines (for turbo-superchargers), piston aeroengines utilizing them, and turbojet gas turbines. Drawing upon previously unpublished material from the archived German documents, those chapters provide a concise but technically precise and informative look into those technologies, where great strides were made in Germany during the war. In summary, the coverage is intended to be useful not only to history buffs with a technical bent but also to the practicing engineers and engineering students to help with their day-to-day activities in this particular field of turbomachinery.
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L, Mattern Duane, Le Dzu K, and United States. National Aeronautics and Space Administration., eds. Comparisons of rig and engine dynamic events in the compressor of an axi-centrifugal turboshaft engine. [Washington, D.C: National Aeronautics and Space Administration, 1996.

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Book chapters on the topic "Centrifugal Gas Compressors"

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Johansen, Oddgeir. "Performance Monitoring System for Centrifugal Compressors On Heimdal Gas Field." In Profitable Condition Monitoring, 55–67. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1616-9_7.

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Rozova, Lyudmyla, and Gennadii Martynenko. "Mathematical Modeling and Program Implementation of Gasdynamic Solution of Dry Gas Seals for Centrifugal Compressors." In Advances in Intelligent Systems and Computing, 591–602. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63270-0_40.

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Unnikrishnan, G. "Bayesian Network for Centrifugal Compressor Damage." In Oil and Gas Processing Equipment, 103–12. First edition. | Boca Raton : CRC Press, 2021.: CRC Press, 2020. http://dx.doi.org/10.1201/9780429287800-7.

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Bonneton, M., L. Tavian, G. M. Gistau-Baguer, F. Turcat, and P. Viennot. "A High Reliability Gas-Driven Helium Cryogenic Centrifugal Compressor." In Advances in Cryogenic Engineering, 643–49. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9047-4_78.

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Hafaifa, Ahmed, Guemana Mouloud, and Belhadef Rachid. "Fuzzy Modeling and Control of Centrifugal Compressor Used in Gas Pipelines Systems." In Applied Condition Monitoring, 379–89. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14532-7_39.

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Cherepanov, Ivan E., Vladimir Ya Modorskii, Stanislav L. Kalyulin, Anton O. Mikryukov, Danila S. Maksimov, and Anna V. Babushkina. "Applying Parallel Calculations to Model the Centrifugal Compressor Stage of a Gas Transmittal Unit in 2FSI Statement." In Communications in Computer and Information Science, 321–35. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-55326-5_23.

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Nail, Bachir, Nadji Hadroug, Ahmed Hafaifa, and Abdellah Kouzou. "Fault Detection and Localization of Centrifugal Gas Compressor System Using Fuzzy Logic and Hybrid Kernel-SVM Methods." In Studies in Systems, Decision and Control, 137–53. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1746-4_7.

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Boyce, Meherwan P. "Centrifugal Compressors." In Gas Turbine Engineering Handbook, 219–73. Elsevier, 2006. http://dx.doi.org/10.1016/b978-075067846-9/50009-2.

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Boyce, Meherwan P. "Centrifugal Compressors." In Gas Turbine Engineering Handbook, 253–301. Elsevier, 2012. http://dx.doi.org/10.1016/b978-0-12-383842-1.00006-8.

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Wilkes, Jason, Brian Pettinato, Rainer Kurz, Justin Hollingsworth, Donghui Zhang, Matt Taher, Chris Kulhanek, Ferdinand Werdecker, Dirk Büche, and George Talabisco. "Centrifugal Compressors." In Compression Machinery for Oil and Gas, 31–133. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-12-814683-5.00003-1.

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Conference papers on the topic "Centrifugal Gas Compressors"

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Noushad, Jisha, Anand Babu Dhamarla, and Pavan Kumar. "Casing Treatment of Centrifugal Compressors." In ASME 2015 Gas Turbine India Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gtindia2015-1337.

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The operating range of any compressor is controlled by Surge and Choke. Surge occurs at lower mass flow rates with large pressure fluctuations and flow reversals, while choke occurs at higher mass flow rates when the flow rate reaches the limit which compressor can discharge. Ported shroud is a cost effective casing treatment that can greatly improve operating range of centrifugal compressors. By removing the stagnant and reverse flow from shroud wall boundary-layer region and recirculating it to impeller inlet, it has been demonstrated that larger range of operability can be achieved without much loss on compressor efficiency. This paper demonstrates the improvement of a centrifugal compressor operational range with ported shroud configuration. A series of CFD simulations were carried out with open source centrifugal compressor geometry (NASA HPCC 4:1) to create performance characteristics/speed-lines. The CFD methodology and practices were validated by comparing the results with the experimental data. Performance evaluation of ported shroud configuration is done with respect to solid shroud. Ported shroud compressor is proven to give higher choke mass flow and also a better surge margin compared to the Solid shroud model. The phenomena of in-flowing and out-flowing port have also been demonstrated. Emphasis was given to understand how ported shroud helps to achieve a better performance. A design optimization study has also been carried out in order to establish the optimum ported shroud configuration. Design parameter such as port location has been selected and the effect of this parameter on the performance of the compressor is studied using CFD. Optimum port geometry was proposed.
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Hoppock, William G. "Revamp Experiences With Centrifugal Pipeline Compressors." In ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-109.

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Centrifugal pipeline compressors are often restaged to meet new operating requirements. Several examples of compressor revamps are presented to illustrate various factors which can influence these restaging efforts. Examples involving both single-stage and multi-stage compressors are included. Various types of modern impeller designs used in pipeline revamps are discussed. An explanation is given of the boundaries which define a typical pipeline compressor range chart.
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Pereira dos Santos, Sidney. "Gas Compressor Service With Turbo Compressors." In 2004 International Pipeline Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ipc2004-0183.

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Gas pipeline projects are capital intensive and normally are developed under scenarios of uncertainty. Such uncertainties vary from closing take-or-pay, ship-or-pay or delivery-or-pay agreements to those uncertainties related to the acquisition of equipments, material and construction and assembling contracts. Natural gas compression service contracts with compressor station using gas motors and reciprocating compressors have been widely adopted at PETROBRAS as economically feasible against holding the stations as part of the pipeline asset as well as providing an effective approach to mitigate risks inherent to the gas business and associated to the compressor stations. Although compression service contracts with turbo compressors (gas turbine drivers and centrifugal compressors) have not yet been accomplished at PETROBRAS for gas pipeline projects, studies and preliminaries discussions shows that, taken into consideration certain relevant aspects, they will also present great opportunity to be adopted and will generate the same advantages already perceived for the compression service contracts with stations that uses gas motor drivers and reciprocation compressors. This paper has the objective of presenting an economic approach and a business model addressing the main points that must be considered while doing feasibility analysis between the alternatives of holding property of the compression station asset against the opportunity of having a compression service contract as operating cost for the project. Questions such as how to address depreciation, overhaul costs and tailor made equipment, such as centrifugal compressors, are raised and answered.
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Berot, François, and Hervé Dourlens. "On Instability of Overhung Centrifugal Compressors." In ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-202.

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This paper describes the synchronous vibration instability problem that occurred on a series of large overhung centrifugal compressors. The first part of this paper deals with the identification and display of the instability phenomenon: cyclic vibration amplitude variations and phase angle rotation occuring during testing of overhung centrifugal compressors. After numerical simulations and analysis of the test results, the bearing design has been identified as the cause of the problem. The second part describes the numerical study of the instability of the compressor. This problem is related to the eccentricity of the shaft in the bearing and to the shape of its orbit. We have investigated and propose different solutions to avoid this unstable dynamic behavior. These solutions have been tested on different compressors and have confirmed the results of the numerical analysis. The third part reminds a link between the thermal effect occurring in the bearings, the numerical results and the tested dynamic behavior of the compressor. Recently, some authors such as Keogh et al. (1994) and Liebich et al. (1994) have noticed and studied this unstable behavior. Althougth the nature of the phenomenon seems to be known (de Jongh et al., 1984) (Faulkner et al., 1997a, 1997b), no universal technical solution to this important problem has been found. The contribution of this work is to present another case of the influence of the thermal effect on the dynamic behavior of an overhung compressor. We present the typical symptoms of the phenomenon, explain it, and propose the solutions we have used to avoid the problem.
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Galerkin, Y., A. Rekstin, K. Soldatova, and A. Drozdov. "Gas Dynamic Designs of Centrifugal Compressors for Gas Industry." In ASME 2015 Gas Turbine India Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gtindia2015-1215.

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Centrifugal compressors for gas industry consume huge amount of energy. As a rule, they are single-shaft, with two or more stages and with comparatively low pressure ratio. Compressors operate at low Mach numbers and high Reynolds numbers. Two design parameters influence mostly stage performances. Stage flow coefficient optimal values lie in range 0.060–0.11. Chosen number of stages establishes value of this coefficient if speed of a rotor rotation is fixed. Design loading factor optimal values are 0.42–0.52. It corresponds to high efficiency, shifts a surge limit far from a design point and makes power maximal in a design point. Some considerations about impeller and diffuser types are presented. Design procedure consists on application of the Universal modeling programs for main dimensions optimization and performance calculations. Q3D non-viscid velocity diagrams are analyzed for optimization of blade configuration. Samples of design are presented, 32 MW single-stage pipeline compressor stage with record efficiency included.
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Taher, Matt, and Cyrus Meher-Homji. "Matching of Gas Turbines and Centrifugal Compressors: Oil and Gas Industry Practice." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68283.

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Gas turbine driven centrifugal compressors are widely used in the oil and gas industry. In evaluating the optimum selection of gas turbine drivers for centrifugal compressors, one of the main objectives should be to verify proper integration and matching of the centrifugal compressor to its gas turbine driver. Gas turbines are of standard designs, while centrifugal compressors are specifically designed to meet customer requirements. The purchaser should clearly specify process requirements and define possible operating scenarios for the entire life of the gas turbine driven centrifugal compressor train. Process requirements defined by the purchaser, will be used by the compressor designer to shape the aero-thermodynamic behavior of the compressor and characterize compressor performance. When designing a centrifugal compressor to be driven by a specific gas turbine, other design requirements are automatically introduced to centrifugal compressor design. Off-design performance, optimum power turbine speeds at site conditions as well as optimum power margin required for a future-oriented design must all be considered. Design and off-design performance of the selected gas turbine at site conditions influences the final selection of a properly matched centrifugal compressor design. In order to evaluate different designs and select the most technically viable solution, the purchaser should have a clear understanding of the factors influencing a proper match for a centrifugal compressor and its gas turbine driver. This paper discusses criteria for evaluating the most efficient combination of a centrifugal compressor and its gas turbine driver as an integral package from a purchaser’s viewpoint. It also addresses API standard requirements on gas turbine driven centrifugal compressors.
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Hughes, G. A. "Applications for Hydrocarbon Testing in Centrifugal Compressors." In ASME 1987 International Gas Turbine Conference and Exhibition. American Society of Mechanical Engineers, 1987. http://dx.doi.org/10.1115/87-gt-134.

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The goal of any test must be to prove reliability. In centrifugal compressers there are basically two types of tests. The first proves the mechanical integrity, while the second verifies the aerodynamic performance. No one test can satisfy all goals so it is left to the purchaser to specify the type of test(s) which will satisfy his requirements. This paper discusses the limitations of various types of tests. Emphasis is given to Hydrocarbon Testing and, in particular, Class I Hydrocarbon Testing.
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Mizuki, Shimpei, and Hikaru Imai. "A Study Concerning Performance Characteristics of Centrifugal Compressors." In ASME 1985 International Gas Turbine Conference and Exhibit. American Society of Mechanical Engineers, 1985. http://dx.doi.org/10.1115/85-gt-97.

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A method for estimations of performance characteristics of centrifugal compressors was examined by comparing the estimated results with those by experiments. Lots of empirical and semi-empirical factors which were introduced to the losses within compressor channels in the estimations, and the experimental results for the compressors with a wide variety of configurations, operating conditions and design techniques were investigated. After the extensive comparisons, the most appropriate combinations of the factors for the present method were given. By employing this method, the major factors which are directly related to the performance characteristics were computed and the relationships among them were discussed. Thus, the ratio of the relative velocity at the impeller exit to that at the inlet, the non-dimensional relative velocity at the impeller inlet and that at the exit were obtained as the parameters of the slip factor, the flow coefficient and the specific speed.
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Ashour, Osama, Arul Saravanapriyan, Abdurrahman Khalidi, Ever Fadlun, Nicola Giannini, Alberto Ceccherini, Marco Pierir, and David Bianucci. "Diagnostic Rules for Gas Turbines Driving Centrifugal Compressors." In Abu Dhabi International Petroleum Exhibition and Conference. Society of Petroleum Engineers, 2015. http://dx.doi.org/10.2118/177743-ms.

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Staroselsky, Naum, and Lawrence Ladin. "More Effective Control for Centrifugal Gas Compressors Operating in Parallel." In ASME 1986 International Gas Turbine Conference and Exhibit. American Society of Mechanical Engineers, 1986. http://dx.doi.org/10.1115/86-gt-204.

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Parallel Operating centrifugal gas compressors are major elements in the chemical industry, in oil production and in natural gas gathering, injection, separation, transmission and LNG production. Large energy savings, reduced repairs and improved automation are possible with more effective solutions for compressor station control. The authors suggest an improved definition of compressor energy efficiency. They analyze several common approaches to control of parallel compressors and evaluate them in terms of energy efficiency, stability of control, equipment protection and level of automation. An improved system developed by one of the authors will be described theoretically and with an example from field operation.
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Reports on the topic "Centrifugal Gas Compressors"

1

Skone, Timothy J. Wellhead Compressor, Gas-Powered Centrifugal, 200 HP. Office of Scientific and Technical Information (OSTI), April 2011. http://dx.doi.org/10.2172/1509237.

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Di Bella, Francis A. Development Of A Centrifugal Hydrogen Pipeline Gas Compressor. Office of Scientific and Technical Information (OSTI), April 2015. http://dx.doi.org/10.2172/1227195.

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Development of turbine driven centrifugal compressors for non-condensible gas removal at geothermal power plants. Final report. Office of Scientific and Technical Information (OSTI), December 1997. http://dx.doi.org/10.2172/570103.

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