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Journal articles on the topic 'Gas compressor shafts'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Korakianitis, T., and K. Svensson. "Off-Design Performance of Various Gas-Turbine Cycle and Shaft Configurations." Journal of Engineering for Gas Turbines and Power 121, no. 4 (1999): 649–55. http://dx.doi.org/10.1115/1.2818521.

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The design-point performance of various gas turbine cycles such as simple, regenerative, and intercooled-regenerative, is well understood. It is also understood that more elaborate shaft arrangements such as one, two, or three concentric or nonconcentric shafts, and a separate power turbine shaft, provide better starting and operational flexibility, and wider plateaus of high off-design performance. However, the types of different off-design performance one can obtain with these different shaft arrangements has not been previously reported. In this paper we use a computer program to investigat

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2

Kopelowicz, H. J., A. R. Barreto, F. L. C. Moutella, H. T. Arêas, J. A. R. Parise, and C. E. R. Siqueira. "SIMULATION AND EXPERIMENTAL EVALUATION OF AN INNOVATIVE ROTARY COMPRESSOR WITH VARIABLE SPEED DISPLACERS." Revista de Engenharia Térmica 7, no. 2 (2008): 51. http://dx.doi.org/10.5380/reterm.v7i2.61778.

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This paper describes preliminary studies of a new rotary compressor with variable speed displacers. Two displacers rotate concentrically, in an annular space, at variable and phased angular velocities, thus creating two variable-volume compression spaces between them. The displacers are individually driven by two concentric shafts. An innovative driving mechanism imposes phased variable angular speeds to the shafts and, consequently, to the displacers, thus providing a volume variation in the gas compression spaces. The driving mechanism also offers a convenient way of capacity control, from z

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3

Farajov Elman, Tarlan, and Aslanov Jamaladdin Nuraddin. "Introduction to Compressors and Increasing wear Resistance of Centrifugal Compressor Shaft Bushing Bushings by Replacing Composition of Bushing Material." Journal of Robotics and Automation Research 5, no. 3 (2024): 01–07. https://doi.org/10.33140/jrar.05.03.01.

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This article is a research article focused on studying the wearing of bushing connections within shafts, particularly in flash gas compressors. The article aims to identify various factors contributing to malfunctions that hinder the smooth operation of these compressors. The methodology involves a comprehensive study of the bushing connections and proposes new compositions of materials for compressor bushings. These new materials would replace bronze, potentially by incorporating nonferrous elements into bronze alloys. This alteration aims to enhance the wear resistance of the bushings agains

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Poljak, Igor, Josip Orović, Vedran Mrzljak, and Dean Bernečić. "Energy and Exergy Evaluation of a Two-Stage Axial Vapour Compressor on the LNG Carrier." Entropy 22, no. 1 (2020): 115. http://dx.doi.org/10.3390/e22010115.

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Data from a two-stage axial vapor cryogenic compressor on the dual-fuel diesel–electric (DFDE) liquefied natural gas (LNG) carrier were measured and analyzed to investigate compressor energy and exergy efficiency in real exploitation conditions. The running parameters of the two-stage compressor were collected while changing the main propeller shafts rpm. As the compressor supply of vaporized gas to the main engines increases, so does the load and rpm in propulsion electric motors, and vice versa. The results show that when the main engine load varied from 46 to 56 rpm at main propulsion shaft

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5

Carpenter, Chris. "Subsurface Compressor System Improves Gas Production in Unconventional Reservoirs." Journal of Petroleum Technology 73, no. 07 (2021): 62–63. http://dx.doi.org/10.2118/0721-0062-jpt.

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This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 201138, “Liquid Removal To Improve Gas Production and Recoverable Reserves in Unconventional Liquid-Rich Reservoirs by Subsurface Wet Gas Compression,” by Lukas Nader, SPE, David Biddick, SPE, and Herman Artinian, SPE, Upwing Energy, et al., prepared for the 2020 SPE Virtual Artificial Lift Conference and Exhibition—Americas, 10–12 November. The paper has not been peer reviewed. This paper describes an artificial lift technology, a subsurface compressor system (SCS), that simultaneously removes liq

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Gao, Jian Hua, and Ying Yun Huang. "Effect of Ambient Temperature on Three-Shaft Gas Turbine Performance under Different Control Strategy." Advanced Materials Research 424-425 (January 2012): 276–80. http://dx.doi.org/10.4028/www.scientific.net/amr.424-425.276.

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Gas turbine is sensitive to ambient temperature. Different ambient temperature could change the state of the inlet air of compressor and make the gas turbine work in off design conditions. Research the effect of ambient temperature on gas turbine performance is valuable to the long-term safe operation of gas turbine. In this paper, a thermodynamic model of a simple cycle gas turbine which has three shafts was established, and steady-state performance simulation under different ambient temperature was carried out. In the two conditions of 1.0 and 0.35 work states, the effect of ambient temperat

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Ugo Campora. "WR21 marine gas turbine thermodynamic simulator for ship propulsion studies." International Journal of Frontiers in Engineering and Technology Research 6, no. 1 (2024): 001–15. http://dx.doi.org/10.53294/ijfetr.2024.6.1.0023.

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An original modular mathematical model, based on physical laws, for steady state and dynamics performance simulation of the WR21 gas turbine is presented in the paper. The model, developed in Matlab-Simulink language, is organized in modular form. Each gas turbine component (i.e. compressor, turbine, combustor, heat exchanger) is modelled in a specific simulator block, that simulates the performance of its pertinent component by means of steady state performance maps and/or correlations, time dependent momentum, energy and mass equations, nonlinear algebraic equations. The great application fl

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Nail, Bachira, and Belkacem Bekhiti. "Optimal PID controllers design for discharge pressure-temperature control of centrifugal gas compressor system using Grey Wolf optimizer." Recueil de mécanique 6, no. 2 (2022): 629–36. https://doi.org/10.5281/zenodo.7216713.

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In this paper, we introduce optimal PID controllers that are designed with the help of the recently developed metaheuristic Stochastic Grey Wolf Optimizer (GWO), with the gains K<sub>p</sub>, K<sub>i</sub>, and K<sub>d</sub> of the controllers chosen via the minimization of the integral quadratic tracking error function e(t). This is done so that we can achieve the best control specifications, including no overshooting, good response and settling time, and no static error. The primary goal of this design is to improve the best performance and efficiency of the BCL 505 centrifugal gas compresso

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9

Lal, A. G., and M. S. Shelestov. "ANALYSIS OF EXISTING SUPERCHARGING SYSTEMS AND PERSPECTIVES OF APPLICATION OF ELECTRIC DRIVE IN SUPERCHARGING UNITS." Internal Combustion Engines, no. 1 (September 7, 2022): 21–26. http://dx.doi.org/10.20998/0419-8719.2022.1.03.

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The article analyzes modern solutions for increasing engine power by improving the air supply system. Single-stage and multi-stage pressurization schemes with gas, mechanical and combined connection in several variations are considered, their positive and negative sides for modern mechanical engineering are revealed. The simplest and most common is the turbocharging system, in which the turbine rotates only under the exhaust gases and this drives the compressor. Consideration should be given to the features of the working process of two-stroke diesel engines. At low speeds, there is not

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Kuznetsov, Eduard, and Iveta Pandová. "Calculation of the Operational Characteristics of the Impulse Gas-Barrier Face Seal." Management Systems in Production Engineering 31, no. 4 (2023): 411–17. http://dx.doi.org/10.2478/mspe-2023-0046.

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Abstract The problem of reducing leaks along the pump or compressor shaft of pumped liquids and gases into the environment is very urgent. Serious difficulties have to be faced when sealing the shafts of machines that pump aggressive, toxic, explosive and fire-hazardous environments. According to modern occupational safety requirements, such pumps and compressors should use double seals with a barrier medium whose pressure exceeds the sealed one by 0.05-0.2 MPa. Currently, liquid-lubricated double mechanical seals are widely used in chemical production equipment, however, over the last decade

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Zhuo, M., LH Yang, K. Xia, and L. Yu. "Thermal effects on the tensile forces of rods in rod-fastened rotor of heavy-duty gas turbine." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 8 (2018): 2753–62. http://dx.doi.org/10.1177/0954406218791641.

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Circumferential tie-rods fastened rotor is a common structure widely used in gas turbine. The preloads of rod groups are of great importance to ensure the strength, stiffness, and stability of the rotor in gas turbine. The tensile force of rods obtained through preload may change due to inconsistent axial thermal expansions between rods and discs during transient startup and shutdown processes, and the change should be within the safety margin. Based on the finite element method, thermal-structural analyses of a gas turbine are carried out to quantify the effect of temperature field on tensile

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Подзирей, Юрий Степанович. "БЕЗЛЕТОВИЩНА ТРАНСПОРТНА АВІАЦІЯ – ПРОБЛЕМИ ТА ПЕРСПЕКТИВИ". Aerospace Technic and Technology, № 6 (12 серпня 2017): 45–51. http://dx.doi.org/10.32620/aktt.2017.6.06.

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The possibility used of the last achievements of fundamental science for creation of the engine for vertical take-off and landing flying platform (FP) are discussed. FP intended for transportation goods and passengers in speed range of 0 - 700 km/hour. It is offered to equip with engine creating flat stream of exhaust. At take-off, landing and patrol FP used the vertical direction nozzle working on the slot-hole ejector amplifier of thrust, on the cruiser mode - the pulling propeller variable pitch airplane type. The design of the engine allows redistributed power between a nozzle and the prop

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13

Lelgemann, K. D. "The Design, Selection, and Application of Oil-Free Screw Compressors for Fuel Gas Service." Journal of Engineering for Gas Turbines and Power 117, no. 1 (1995): 74–80. http://dx.doi.org/10.1115/1.2812784.

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Fuel gas compressors installed in cogeneration systems must be highly reliable and efficient machines. The screw compressor can usually be designed to meet most of the gas flow rates and pressure conditions generally required for such installations. To an ever-increasing degree, alternative sources are being found for the fuel gas supply, such as coke-oven gas, blast-furnace gas, flare gas, landfill gas, and synthesis gas from coal gasification or from pyrolysis. A feature of the oil-free screw compressor when such gases are being considered is the isolation of the gas compression space from t

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14

Borovik, Sergey, and Yuriy Sekisov. "Single-Coil Eddy Current Sensors and Their Application for Monitoring the Dangerous States of Gas-Turbine Engines." Sensors 20, no. 7 (2020): 2107. http://dx.doi.org/10.3390/s20072107.

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The creation and exploitation of gas turbine engines (GTE) often involve two mutually exclusive tasks related to ensuring the highest reliability while achieving a good economic and environmental performance of the power plant. The value of the radial clearance between the blade tips of the compressor or turbine and the stator is a parameter that has a significant impact on the efficiency and safety of the GTE. However, the radial displacements that form tip clearances are only one of the components of the displacements made by GTE elements due to the action of power loads and thermal deformat

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15

Chernova, O. T., and B. I. Gershun. "Analysis of growth drive breakdown by the increase of the Dashav UGS fountain pipes." METHODS AND DEVICES OF QUALITY CONTROL, no. 1(44) (June 28, 2020): 76–88. http://dx.doi.org/10.31471/1993-9981-2020-1(44)-76-88.

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Scientists who were analyzing the results of the underground gas storage (UGS) complex of Ukraine, say that for modern conditions the maximum daily productivity should be increased by 30-35%. Since the beginning of the creation of gas storage facilities passed than 40 years, work is carried on outdated and physically worn out equipment. Work of the wells (which were build based on the old technologies at low reservoir pressure) are characterized by low productivity because their bottomhole zone is partially occluded by the mud filtrate, partially contaminated with compressor oil; due to the se

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16

Edigarev, Andrey, Mihail Shemet, and Vsevolod Eliseev. "STUDY OF THE POSSIBILITY OF INCREASING THE RESOURCE PERFORMANCE OF A GAS TURBINE ENGINE AS COMPOSITION OF A SEQUENTIAL HYBRID POWERTRAIN." Perm National Research Polytechnic University Aerospace Engineering Bulletin, no. 76 (2024): 5–14. http://dx.doi.org/10.15593/2224-9982/2024.76.01.

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The results of experimental studies carried out in the course of research tests of a demonstrator of a sequential hybrid powertrain based on a VK-100-1MK gas turbine engine are presented. It is shown that the presence of a battery provides a smoother change of the gas turbine engine mode and, therefore, an increase in the resource indicators of the latter by reducing the gradients of the temperature field in the hot section parts during transients. A model cycle of operation was developed for the demonstrator of a sequential type hybrid powertrain. A consistent increase in the mechanical load

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17

Doyle, Timothy J., Raymond W. Kornbau, and Arthur L. Smookler. "Surface Ship Machinery—A Survey of Propulsion, Electrical, and Auxiliary System Development." Marine Technology and SNAME News 29, no. 03 (1992): 115–43. http://dx.doi.org/10.5957/mt1.1992.29.3.115.

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Propulsion, auxiliary, and electric machinery developments for surface combatants are surveyed---overall system characteristics are covered to permit a broad coverage of related activities. Prime movers in both propulsion and ship service sizes are discussed. All will demonstrate improved economy, especially at part power, and increased attention to thermal and acoustic signatures. Gas turbines are the source of propulsion power, but diesels join turbines in ship service application. Electric drives may be selected where machinery is widely separated or geometries are restrictive. Reversing mo

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18

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 (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 resu

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Bekirova, A. A. "Analysis of the frictional processes in piston machines." Azerbaijan Oil Industry, no. 04 (April 15, 2024): 54–60. http://dx.doi.org/10.37474/0365-8554/2024-04-54-60.

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The durable and reliable work of piston compressors and pumps used in the oil and gas industry has great importance for practice. Investigation of complex problems with respect to mechanical and thermodynamic phenomena in compressors and pumps gives the opportunity to solve the problems of increasing the durability of oil and gas exploitation and transportation. Increasing the efficiency and durability of the compressor-pump stations directly depends on the correct calculations and designing of the different elements and mechanical parameters of piston machines. The problem of determining the

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Novecosky, T. "Axial Inlet Conversion to a Centrifugal Compressor With Magnetic Bearings." Journal of Engineering for Gas Turbines and Power 116, no. 1 (1994): 152–55. http://dx.doi.org/10.1115/1.2906784.

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NOVA’s Alberta Gas Transmission Division transports natural gas via pipeline throughout the province of Alberta, Canada, exporting it to eastern Canada, United States, and British Columbia. There is a continuing effort to operate the facilities and pipeline at the highest possible efficiency. One area being addressed to improve efficiency is compression of the gas. By improving compressor efficiency, fuel consumption and hence operating costs can be reduced. One method of improving compressor efficiency is by converting the compressor to an axial inlet configuration, a conversion that has been

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Parulekar, Prashant S., Richard Hudson, and Harrison Boyd. "Significant reliability improvements in reciprocating gas compressor packages at Arrow Energy." APPEA Journal 58, no. 1 (2018): 168. http://dx.doi.org/10.1071/aj17046.

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Arrow Energy operates a fleet of four-stage reciprocating compressors in the Surat Basin, boosting low-pressure coal-seam gas (at 60 kPag) to transmission pipeline pressure (in excess of 9000 kPag). Historically, the compressors and the gas engine drivers exhibited persistent problems associated with high vibrations, inadequate engine and process gas cooling, poor compressor valve reliability and premature engine component failures. Hot Queensland summer conditions further exacerbated these problems, which resulted in frequent unit trips during hot periods when gas and electricity prices deman

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22

Kalinkevych, M., V. Ihnatenko, O. Bolotnikova, and O. Obukhov. "Design of high efficiency centrifugal compressors stages." Refrigeration Engineering and Technology 54, no. 5 (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 w

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Zuraihan, Zuraihan, Ridwan Ridwan, and Suryani Suryani. "Evaluasi Kinerja Turboexpander (KE -5601) Berdasarkan Kondisi Minimum Feed Di Unit 56 LPG Plant PT Perta Arun Gas." Jurnal Riset, Inovasi, Teknologi & Terapan 2, no. 1 (2024): 16. http://dx.doi.org/10.30811/ristera.v2i1.4968.

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A turboexpander is an escrow and compressor connected in a process. The turboexpander rotates at high speed by utilizing gas expansion in the expander and gas compression in the compressor. The compressor-expander consists of wheels at each end that are gassed. The gas flow at high speed will rotate the shaft connected to the end of the compressor part. The purpose of this paper is to calculate the efficiency of equipment that is able to maximize the separation process between methane and ethane, and simulate flow and pressure variations to see changes in efficiency. The method used is to take

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Shah, P. N., and C. S. Tan. "Effect of Blade Passage Surface Heat Extraction on Axial Compressor Performance." Journal of Turbomachinery 129, no. 3 (2005): 457–67. http://dx.doi.org/10.1115/1.2372776.

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Axial compressor performance with heat extraction via blade passage surfaces (compressor cooling) is compared to its adiabatic counterpart, using computational experiments and mean line modeling. For a multistage compressor with an adiabatic design point, results at fixed corrected rotor speed indicate that, if available, compressor cooling would (i) raise the overall pressure ratio (at a given corrected flow), (ii) raise the maximum mass flow capability, (iii) raise the efficiency, defined as the ratio of isentropic work for a given pressure ratio to actual shaft work, and (iv) provide rear s

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Ingistov, Steve. "Compressor Discharge Brush Seal for Gas Turbine Model 7EA." Journal of Turbomachinery 124, no. 2 (2002): 301–5. http://dx.doi.org/10.1115/1.1457456.

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Single-shaft, heavy-duty industrial gas turbines are extremely sensitive to compressed air bypassing at compressor discharge plane. This plane represents the highest pressure location in entire gas turbine unit (GTU). Standard method to minimize compressed air leakage is labyrinth seal that is integral part of the cylindrical element here called “inner barrel.” The inner barrel is also the part of compressor discharge diffuser. This paper describes the efforts related to conversion of standard labyrinth seal into the hybrid seal that is combination of labyrinth and brush seals.

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Cruz-Manzo, Samuel, Senthil Krishnababu, Vili Panov, and Chris Bingham. "Inter-Stage Dynamic Performance of an Axial Compressor of a Twin-Shaft Industrial Gas Turbine." Machines 8, no. 4 (2020): 83. http://dx.doi.org/10.3390/machines8040083.

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In this study, the inter-stage dynamic performance of a multistage axial compressor is simulated through a semi-empirical model constructed in the Matlab Simulink environment. A semi-empirical 1-D compressor model developed in a previous study has been integrated with a 0-D twin-shaft gas turbine model developed in the Simulink environment. Inter-stage performance data generated through a high-fidelity design tool and based on throughflow analysis are considered for the development of the inter-stage modeling framework. Inter-stage performance data comprise pressure ratio at various speeds wit

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Di Mattia, Edoardo, Agostino Gambarotta, Mirko Morini, and Costanza Saletti. "Application of modelling approaches of twin-screw compressors: thermodynamic investigation and reduced-order model identification." E3S Web of Conferences 312 (2021): 05001. http://dx.doi.org/10.1051/e3sconf/202131205001.

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Refrigeration is an essential part of the food chain. It is used in all stages of the chain, from industrial food processing to final consumption at home. In these processes, mechanical refrigeration technologies are employed, where compressors increase gas pressure from evaporation to condensation. In industrial refrigeration systems, twin-screw compressors represent the most widely used technology. A detailed mathematical model of a twin-screw compressor has been developed in Simulink® using differential equations for energy and mass balances to simulate the compression cycle that includes s

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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 ra

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Galashov, Nikolay N., Alexander A. Tubolev, Evgeny S. Boldushevsky, and Alexander A. Minor. "Impact of steam flow into a combustion chamber of a contact gas-steam installation on its energy characteristics." Bulletin of the Tomsk Polytechnic University Geo Assets Engineering 335, no. 2 (2024): 48–59. http://dx.doi.org/10.18799/24131830/2024/2/4436.

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Relevance. Reduction of natural gas consumption and emissions of harmful substances into the environment based on introduction of water vapor into a combustion chamber of a contact gas-steam installation. Aim. To carry out numerical studies on the influence of relative steam flow into the combustion chamber of the contact gas-steam installation on its energy characteristics. Objects. Contact gas-steam installations based on gas turbines with steam injection into the combustion chamber. Methods. Numerical methods based on material and energy balances of systems and elements of gas-steam install

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Tipton, Leighton P. J. "Bearing Load Measurements on a 3-Shaft Gas Turbine." Applied Mechanics and Materials 1-2 (September 2004): 225–32. http://dx.doi.org/10.4028/www.scientific.net/amm.1-2.225.

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Axial location bearings are used to carry the load imbalance between the forward thrust of an aero-engine’s compressor and the rearwards drag of the turbine that drives the compressor’s rotation. The large gas turbines manufactured by Rolls-Royce have three independently rotating compressor/turbine stages, namely the low pressure (LP), the intermediate pressure (IP) and high pressure (HP) systems. The load imbalance, or bearing load, associated with each of these systems must be assessed during an engines development phase in order to confirm the reliability of the bearings throughout the oper

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Bolland, O., M. Fo̸rde, and B. Ha˚nde. "Air Bottoming Cycle: Use of Gas Turbine Waste Heat for Power Generation." Journal of Engineering for Gas Turbines and Power 118, no. 2 (1996): 359–68. http://dx.doi.org/10.1115/1.2816597.

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This paper presents a thermodynamic analysis of the Air Bottoming Cycle (ABC) as well as the results of a feasibility study for using the Air Bottoming Cycle for gas turbine waste heat recovery/power generation on oil/gas platforms in the North Sea. The basis for the feasibility study was to utilize the exhaust gas heat from an LM2500PE gas turbine. Installation of the ABC on both a new and an existing platform have been considered. A design reference case is presented, and the recommended ABC is a two-shaft engine with two compressor intercoolers. The compression pressure ratio was found opti

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Zhang, Ao, and Hongyuan Sun. "Dynamics Analysis of a Rolling Rotor Compressor Considering the Electromagnetic Force." Journal of Computing and Electronic Information Management 10, no. 3 (2023): 91–94. http://dx.doi.org/10.54097/jceim.v10i3.8708.

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Rolling rotor compressor is a commonly used compressor in air conditioning systems, and studying its internal dynamic characteristics plays an important role in the vibration and noise of air conditioning systems. Due to the integration of the motor rotor and shaft inside the compressor, the influence of electromagnetic force needs to be considered when analyzing the dynamics of the compressor. This paper studies the rotor dynamics characteristics of a rolling rotor compressor, considering not only the bearing force and gas force inside the cylinder, but also the electromagnetic force of the m

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Pereira, Eloi S. "Instrumentation condition monitoring vibration and failure analysis of screw air compressor package in liquefied natural gas plant." Proceedings of the International Conference on Condition Monitoring and Asset Management 2024, no. 1 (2024): 12–23. https://doi.org/10.1784/cm2024.5a4.

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Instrumentation, for conditioning monitoring on rotating equipment is vital for determining whether the equipment is running correctly or not. Measuring the bearing temperature or shaft vibration can identify any potential problems when running the equipment. Identification of a potential problem before it arises allows operating engineers to shut down the machine or make appropriate changes to the machine operation before the problem occurs. This is more economical as shutting down a machine and making the relevant alterations is cheaper than allowing it to fail and performing the repairs. Th

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Zhao, Jiang Ping, and Fu Sheng Shi. "The Analysis of Twin-Screw Compressor New Liquid Film Seal Structure." Advanced Materials Research 538-541 (June 2012): 694–700. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.694.

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Shaft seal lubricating oil leakage of the J-201 Butadiene Gas Twin-screw Compressor occurs from time to time. According to the characteristics and related theories of process medium, the mechanical seal structure and pattern of Twin-screw Compressor had improved design . Using the existing auxiliary system and keeping the existing sealing structure, the non-contact mechanical sealing of process mediumprocess mediumdouble reverse crossing-groove oil film has ‘self-cleaning function’ which was applied to the screw compressor. To analysis its application technology and performance, the problem of

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PRZYBYŁA, Bartosz, and Zbigniew ZAPAŁOWICZ. "The Impact of Damage to the Compressor on the Operating Parameters of the Pratt & Whitney 206B2 Turbine Engine." Problems of Mechatronics Armament Aviation Safety Engineering 9, no. 1 (2018): 61–78. http://dx.doi.org/10.5604/01.3001.0011.7179.

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The article presents the impact of damage to the centrifugal compressor of the P&W 206B2 turbine engine, built in the EC-135p2 helicopters EC-135p2. The damages are caused by sucking the foreign bodies to the inlet, what results in the changes of exploitation parameters of the engine and thermodynamic parameters of operating medium. On the basis of the parameters, measured during engine operation, such as: rotation speed of the rotor of the compressor – n1, the rotation speed of the turbine shaft of the drive – n2, the gas temperature at the outlet of the turbine driving of the compressor

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Crosa, G., F. Pittaluga, A. Trucco, F. Beltrami, A. Torelli, and F. Traverso. "Heavy-Duty Gas Turbine Plant Aerothermodynamic Simulation Using Simulink." Journal of Engineering for Gas Turbines and Power 120, no. 3 (1998): 550–56. http://dx.doi.org/10.1115/1.2818182.

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This paper presents a physical simulator for predicting the off-design and dynamic behavior of a single shaft heavy-duty gas turbine plant, suitable for gas-steam combined cycles. The mathematical model, which is nonlinear and based on the lumped parameter approach, is described by a set of first-order differential and algebraic equations. The plant components are described adding to their steady-state characteristics the dynamic equations of mass, momentum, and energy balances. The state variables are mass flow rates, static pressures, static temperatures of the fluid, wall temperatures, and

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Botros, K. K. "Transient Phenomena in Compressor Stations During Surge." Journal of Engineering for Gas Turbines and Power 116, no. 1 (1994): 133–42. http://dx.doi.org/10.1115/1.2906782.

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Transient phenomena are generally inherent in the operation of compressor stations: These are either fast or slow transients. A model describing the governing equation for the gas dynamics, control system, compressor and turbine shaft inertias has been developed. The effect of these inertias is manifested by an example of a compressor station operating near the surge control line. Another example deals with a station that has a cooler placed in the recycle path. This alters the rate at which the compressor shaft decelerates upon shutdown and may cause backward spinning depending on the relativ

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Yang, Qichao, Changfeng Liu, Quanming Zhang, Guangbin Liu, Yuanyang Zhao, and Liansheng Li. "Experimental investigation of the water–injected process-gas screw compressor." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 232, no. 1 (2016): 3–11. http://dx.doi.org/10.1177/0954408916666573.

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The test rig for water-injected process-gas screw compressor is designed and established. The dry gas seal technology was adopted for the shaft seal of screw compressor and the test rig has the function of regulating and controlling the mass flow of injected water. The performance characteristics of process-gas screw compressor under different working conditions are investigated by experimental research. The effect of rotational speed, the injected water mass flow, and the discharge pressure on the performance of screw compressor including discharge temperature and power consumption were obtai

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Zhou, Jiaming, Jie Liu, Qingqing Su, et al. "Heat Dissipation Enhancement Structure Design of Two-Stage Electric Air Compressor for Fuel Cell Vehicles Considering Efficiency Improvement." Sustainability 14, no. 12 (2022): 7259. http://dx.doi.org/10.3390/su14127259.

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As an auxiliary component with the largest energy consumption in the fuel cell power system, the electric air compressor is of great significance to improve the overall efficiency of the system by reducing its power consumption under the premise of meeting the cathode intake demand. In this paper, the flow state of the gas in the flow field of the fuel cell TSEAC (two-stage electric air compressor) is analyzed by simulation, and the accuracy of the simulation results is verified by experiments. Through the research on the gas compression work of the fuel cell TSEAC, it is found that the higher

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Prikhodko, A. A., G. V. Kurapov, and N. A. Polivoda. "DYNAMIC ANALYSIS OF A TWO-CYLINDER PISTON COMPRESSOR WITH A PLANETARY ACTUATOR ABSTRACT." Spravochnik. Inzhenernyi zhurnal, no. 338 (May 2025): 44–51. https://doi.org/10.14489/hb.2025.05.pp.044-051.

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Piston compressors are widely used in various industries: chemical, oil and gas, medical, food and many others. One of the urgent tasks is to improve the efficiency of such devices, including through the development of promising actuators that implement the reciprocating motion of the working element. The paper considers the problem of dynamic analysis of a two-cylinder piston compressor with a new reciprocating motion planetary mechanism. A dynamic model of the device is constructed by reducing forces, masses and moments to the initial link (input shaft of the actuator). The model is studied

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Molyakov, V. D., B. A. Kunikeev, and N. I. Troitskiy. "The Efficiency of Closed-Cycle Gas Turbines Controlled by Different Methods and Programs." Proceedings of Higher Educational Institutions. Маchine Building, no. 03 (720) (March 2020): 51–63. http://dx.doi.org/10.18698/0536-1044-2020-3-51-63.

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Closed-cycle gas turbine units can be used as power plants for advanced nuclear power stations, spacecraft, ground, surface and underwater vehicles. The purpose and power capacity of closed gas turbine units (CGTU) determine their specific design schemes, taking into account efficient operation of the units both in the nominal (design) mode and in partial power modes. Control methods of both closed and open gas turbine units depend on the scheme and design of the installation but the former differ from the latter mainly in their ability to change gas pressure at the entrance to the low-pressur

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Pawela, Bartosz, and Marek Jaszczur. "Review of Gas Engine Heat Pumps." Energies 15, no. 13 (2022): 4874. http://dx.doi.org/10.3390/en15134874.

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In this paper the most promising developments of technology for gas engine-driven heat pumps for the last 15 years are presented. The purpose is to present the latest research studies and changes in this type of device, as well as to help readers to search for publications containing relevant aspects of gas engine heat pumps. Gas engine-driven heat pumps are devices for parallel heating and cooling production based on compressor heat pump technology. However, unlike heat pumps with compressors powered by electric motors, gas engine-driven heat pumps are driven by gas internal combustion engine

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Cruz-Manzo, Samuel, Vili Panov, and Yu Zhang. "Gas Path Fault and Degradation Modelling in Twin-Shaft Gas Turbines." Machines 6, no. 4 (2018): 43. http://dx.doi.org/10.3390/machines6040043.

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In this study, an assessment of degradation and failure modes in the gas-path components of twin-shaft industrial gas turbines (IGTs) has been carried out through a model-based analysis. Measurements from twin-shaft IGTs operated in the field and denoting reduction in engine performance attributed to compressor fouling conditions, hot-end blade turbine damage, and failure in the variable stator guide vane (VSGV) mechanism of the compressor have been considered for the analysis. The measurements were compared with simulated data from a thermodynamic model constructed in a Simulink environment,

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Chistov, A. S., O. G. Savikhin, and I. O. Savikhin. "NUMERICAL SIMULATION OF NON-STATIONARY PROCESSES IN THE GAS TURBINE CIRCUIT OF THE SSTAR LEAD-COOLED REACTOR." Problems of strenght and plasticity 82, no. 3 (2020): 339–52. http://dx.doi.org/10.32326/1814-9146-2020-82-3-339-352.

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The problem of mathematical and numerical modeling of non-stationary processes in a closed gas turbine installation as part of an energy conversion unit of a lead-cooled reactor is considered. The problem is solved in a fairly General formulation, in which the gas circuit can include an arbitrary number of turbines with gas preheating, an arbitrary number of compressors with gas pre-cooling, as well as a heat exchanger for regenerative gas heating. Variants of both single-shaft and two-shaft gas turbine installations are considered. Point idealization is used when modeling the flow part of the

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Михайлов, Александр, Alexander Mikhailov, А. Байков, A. Baykov, В. Михайлов, and V. Mikhailov. "Life complex increase of all groups of compressor blades of a turbo-shaft gas turbine engine on the basis of a functionally-directed approach." Science intensive technologies in mechanical engineering 2, no. 9 (2017): 42–48. http://dx.doi.org/10.12737/article_59ae90c6830360.45378807.

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The analysis of peculiarities in compressor blade operation of the turbo-shaft gas turbine engine is carried out. At the same time the compressor blade structuring into groups is carried and it is shown that structural groups of blades operate under different conditions of operation. It is defined, that different structural groups of compressor blades have their own definite peculiarities of operation and erosion wear. It is shown, that the erosion wear of all groups of compressor blades may be characterized by irregularities of three kinds. In the paper a general approach to life increase of

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Cherepanov, I. E., V. Ya Modorskii, and A. V. Babushkina. "Numerical investigation of rotor-dynamic system on taking into account gas in labyrinth seals clearances." Journal of Physics: Conference Series 2308, no. 1 (2022): 012012. http://dx.doi.org/10.1088/1742-6596/2308/1/012012.

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Abstract To transport natural gas over long distances, it is necessary to build gas compressor stations that compensate for gas energy losses due to friction. The natural gas uninterrupted supply to consumers depends on their work reliability. The contemporary trend towards increase performance and a simultaneous decrease in structural rigidity lead to previously unpredictable compressor rotor oscillations. The article describes the primary causes of compressor rotor vibrations and some methods of dealing with them. Limitations of existing approaches are overcome by applying multiphysicsmodeli

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Wu, Yu Ren, and Jen Wei Chi. "Time-Varying Load Analysis on the Rotor-Bearing System for Twin-Screw Compressors." Key Engineering Materials 625 (August 2014): 274–81. http://dx.doi.org/10.4028/www.scientific.net/kem.625.274.

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Shaft and rotor deformation caused by the high pressure load, temperature and other external forces in the twin-screw compressor may produce flow leakage, tooth wear and bearing failure. A time-varying load analysis procedure is proposed in this paper to obtain the gas torques on rotors, bearing forces and the shaft deflections for the twin-screw compressor. Further, the calculated forces are compared with the existed well-known software to verify the correctness of the proposed method. Also, the forces on each bearings and the shaft deflection are predicted through KISSsoft modeling technique

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Matveev, V. N., E. S. Goriachkin, G. M. Popov, O. V. Baturin, and I. A. Kudryashov. "Features of design calculation of compressor spool flow path of a twin-shaft gas turbine engine core on the basis of 1D and 2D models of their working process." VESTNIK of Samara University. Aerospace and Mechanical Engineering 22, no. 3 (2023): 75–88. http://dx.doi.org/10.18287/2541-7533-2023-22-3-75-88.

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The features of the stages of parameter design calculation for the formation of the initial design of the flow path of the compressor spool of a twin-shaft engine core of a gas turbine engine are presented and substantiated. The article contains recommendations for choosing values of the pump head coefficient, efficiency and other important parameters for the stages of medium-pressure and high-pressure spools at the stage of thermodynamic calculation. At the stage of design gas-dynamic calculation of the compressor at the middle diameter, typical distributions of axial velocity component and d

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A, Lisoval. "RESEARCH OPPORTUNITIES OF ROTREX SUPERCHARGER FOR APPLICATION IN EXHAUST SYSTEMS." National Transport University Bulletin 1, no. 46 (2020): 183–89. http://dx.doi.org/10.33744/2308-6645-2020-1-46-183-189.

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The purpose of the article is to describe the design and research of the new Rotrex superchargers of C15 series. In superchargers to ensure high boost pressure and efficiency centrifugal compressor wheel, shockless planetary gear of the original design, a special lubrication-cooling system were used. The article describes the design features of Rotrex centrifugal superchargers and the results of experimental researches of the C15 series supercharger on a motor less stand. The design feature of the C15 series superchargers is compactness and high speed - the compressor wheel speed reaches 200 0

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Al-Ghasem, Adnan, G. L. Morrison, and John P. Platt. "Experimental and Numerical Investigation of a Gas Compressor Windback Seal." Journal of Tribology 129, no. 1 (2006): 129–34. http://dx.doi.org/10.1115/1.2401205.

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The effectiveness of a computational fluid dynamics (CFD) commercial code to accurately predict the leakage rate for a windback seal was evaluated. The windback seal under consideration has a rectangular cavity and is similar in design to a gas tooth on stator annular labyrinth seal. The main difference is the windback seal has only one tooth, which continuously winds around the shaft like a screw thread. These seals are used in gas compressors to isolate the gas face seal from bearing oil. A purge gas is passed through the seal into the bearing housing. The helical design allows the seal to c

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