Relevant bibliographies by topics / Backpressure Turbine

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Academic literature on the topic 'Backpressure Turbine'

Author: Grafiati
Published: 5 June 2025
Last updated: 2 August 2025

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Journal articles on the topic "Backpressure Turbine"

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Hromádka, Aleš, Martin Sirový, and Zbyněk Martínek. "Innovation in an Existing Backpressure Turbine for Ensure Better Sustainability and Flexible Operation." Energies 12, no. 14 (2019): 2652. http://dx.doi.org/10.3390/en12142652.

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Cogeneration power plants have already been operated in the Czech Republic for several decades. These cogeneration power plants have been mostly operated with original technologies. However, these original technologies have to be continuously innovated during the entire operation time. This paper is focused on one of the possible innovations, which could lead to better sustainability and improved flexibility of the cogeneration power plants. Backpressure turbines are still used in many cogeneration power plants. However, backpressure turbines are currently losing suitability for cogeneration p
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Hristov, Kaloyan, and Ivan Genovski. "Influence of temperature of return district water on the performance of a backpressure steam turbine installation." IOP Conference Series: Earth and Environmental Science 1128, no. 1 (2023): 012024. http://dx.doi.org/10.1088/1755-1315/1128/1/012024.

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Abstract The district heating systems supply heat to a wide range of consumers. In the heat source of such systems, highly efficient technologies are used for the combined production of electrical and thermal energy mainly based on steam turbine installations with backpressure turbines or turbines with adjustable steam extractions. Combined production leads to a reduction in fuel consumption (fuel saving) compared to the separate production of the two energy products. The fuel saving resulting from cogeneration reduces carbon dioxide emissions. Combined production affects the amount of fuel sa
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Genovski, Ivan, and Kaloyan Hristov. "Model research of the energy efficiency of a cogeneration backpressure steam turbine installation." E3S Web of Conferences 207 (2020): 02004. http://dx.doi.org/10.1051/e3sconf/202020702004.

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In the contemporary district heating systems (DHS) heat energy for the customers is generated by cogeneration method, which leads to the saving of primary energy resources compared to the separate production method. The most widespread technology for combined production is based on steam turbine installations with adjustable steam extraction and backpressure steam turbine. In these technologies district heating water is heated to the required temperature either in district heaters in case of steam turbine with adjustable steam extractions or in boiler-condenser in case of backpressure steam tu
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Cai, X., T. Ning, F. Niu, G. Wu, and Y. Song. "Investigation of wet steam flow in a 300 MW direct air-cooling steam turbine. Part 1: Measurement principles, probe, and wetness." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 223, no. 5 (2009): 625–34. http://dx.doi.org/10.1243/09576509jpe690.

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The direct air-cooling steam turbines have been operated more and more in the north of China. The backpressure of a turbine is affected easily with weather and varies very often in a short time. The variation of backpressure in a larger range from about 10 to 60 kPa causes many problems in design and operation of the turbine. To study the properties of the wet steam flow in the low pressure direct air-cooling steam turbine, an optical—pneumatic probe was developed based on the multi-wavelength light extinction and four-hole wedge probe. Measurements with this probe in a 300 MW direct air-cooli
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Chung, Jaewoo, Siwon Lee, Namho Kim, et al. "Study on the Effect of Turbine Inlet Temperature and Backpressure Conditions on Reduced Turbine Flow Rate Performance Characteristics and Correction Method for Automotive Turbocharger." Energies 12, no. 20 (2019): 3934. http://dx.doi.org/10.3390/en12203934.

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In actual vehicle operation, the turbocharger turbine operates at various temperatures, inlet, and backpressure conditions, unlike compressors. The flow rate characteristics of the turbine are generally evaluated under certain conditions using an assembled turbocharger with a compressor and a turbine and a hot gas bench from the turbocharger manufacturer. Flow rate characteristics are also presented as the reduced mass flow rate to correct the flow rate characteristics according to the turbine inlet temperature and pressure. Therefore, the turbine mass flow rate seen in many engine development
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Aditya, Gadkari. "Studies on Performance Assessment in Back Pressure Turbine." Journal of Advanced Mechanical Sciences 1, no. 4 (2022): 108–13. https://doi.org/10.5281/zenodo.7438348.

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<em>The backpressure turbine is used for supplying process steam to the facilities of power generation. This type of steam turbine not only produces electricity but also supplies low- pressure steam for various requirements. It can be a single or a multistage turbine which is generally used in industrial plants. Various bleeding points can also be incorporated where, the steam can be extracted at intermediate but constant pressures, or it can be used for process heating after fully expanding within the turbine.</em>
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Hristov, Kaloyan, and Ivan Genovski. "Mathematical Models of the Energy Characteristics of a Backpressure Steam Turbine Based on a Simulation Study." E3S Web of Conferences 327 (2021): 01003. http://dx.doi.org/10.1051/e3sconf/202132701003.

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The backpressure steam turbine installations for combined production generate thermal energy and electricity. The produced electricity depends on the heat load determined by consumers. Heat energy is released in the district heating system through water, which is heated with the exhausted steam in boiler-condenser (district heater). The operation regime of the installation is influenced by load of the released district heat and the temperature of the district heat water at the input and output of the boiler-condenser. The variables are heat load of the district heating system and temperature o
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Cooke, D. H. "On Prediction of Off-Design Multistage Turbine Pressures by Stodola’s Ellipse." Journal of Engineering for Gas Turbines and Power 107, no. 3 (1985): 596–606. http://dx.doi.org/10.1115/1.3239778.

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The variation of extraction pressures with flow to the following stage for high backpressure, multistage turbine designs is highly nonlinear in typical cogeneration applications where the turbine nozzles are not choked. Consequently, the linear method based on Constant Flow Coefficient, which is applicable for uncontrolled expansion with high vacuum exhaust, as is common in utility power cycles, cannot be used to predict extraction pressures at off-design loads. The paper presents schematic examples and brief descriptions of cogeneration designs, with background and theoretical derivation of a
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Sinagra, Marco, Tullio Tucciarelli, Calogero Picone, Costanza Aricò, and Marwa Hannachi. "Design of Reliable and Efficient Banki-Type Turbines." Environmental Sciences Proceedings 2, no. 1 (2020): 49. http://dx.doi.org/10.3390/environsciproc2020002049.

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A new shape for the external surface of the Crossflow turbine blades is proposed, which allows for the preservation of hydraulic efficiency in spite of a significant maximum blade thickness providing mechanic robustness and reliability. The final shape of the blades is assessed using an iterative solution for two uncoupled models: a 2D computational fluid dynamic (CFD) and a structural 3D finite element method (FEM) analysis of a single blade. Application of the proposed methodology to the design of a power recovery system (PRS) turbine, a new backpressure Crossflow-type inline turbine for pre
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Luo, Zhiling, and Qi Yao. "Multi-Model-Based Predictive Control for Divisional Regulation in the Direct Air-Cooling Condenser." Energies 15, no. 13 (2022): 4803. http://dx.doi.org/10.3390/en15134803.

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Flow distortions caused by ambient wind can have complex negative effects on the performance of direct air-cooling condensers, which use air as their cooling medium. A control-oriented model of the direct air-cooling condenser model, considering fan volumetric effectiveness and plume recirculation rate, was developed, and its linearization model was derived. The influences of fan volumetric effectiveness and plume recirculation rate on backpressure were analyzed, and the optimal backpressure was calculated. To improve both the transient performance and steady-state energy saving of the condens
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Dissertations / Theses on the topic "Backpressure Turbine"

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Visagie, Willem Johannes. "Blade tip timing to determine turbine blade fatigue in high backpressure conditions." Diss., University of Pretoria, 2020. http://hdl.handle.net/2263/75831.

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This dissertation presents an approach to use blade tip timing measurements with finite element analysis to predict the fatigue life of a low pressure steam turbine last stage blade under high backpressure and low flow conditions. Material fatigue properties were determined through the extended universal material law for FV566 material, along with different temper scenarios. A finite element model of a blade with damping pins was developed, using the principle of cyclic symmetry for a perfectly tuned model. Pre-stress modal analysis was conducted, incorporating damping via friction and plastic
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Merta, Libor. "Parní turbina protitlaková." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230216.

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The Diploma Thesis deals with a design of a backpressure turbine without any bleeds. The fundament of the Diploma Thesis is a thermodynamical calculation of particular parts of the turbine. Technical solutions are designed according to given details of a steam and chosen conditions of use.
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Chrástek, Pavel. "Parní turbina protitlaková." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228871.

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The diploma works demonstrates the thermodynamic calculation and design of the geometry flow profile of the back-pressure steam turbine for specified inlet and outlet conditions of steam. Next target of the work is to design the drawing of the turbine axial cross section. Structuring of this diploma work calculation is following: - regulating stage thermodynamic calculation - turbine stages calculation - equalizing-balancing piston calculation - entire turbine intrinsic efficiency and power rating determination - basic calculation of gearbox parameters and RENK-type gearbox selection for turbi
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Tretera, Michal. "Parní turbína pro průmyslovou teplárnu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443163.

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This diploma thesis deals with the thermodynamic design of a backpressure steam turbine. The mass flow of steam through the turbine is determined based on the required heat output, which is transferred in a heat exchanger at the turbine outlet. The governing stage of the turbine is in form of an impulse stage, with optimization of degree of reaction included. During the optimization, a suitable rotor blade was chosen as well as its size. The governing stage is followed by fifteen stages of reaction blading with the stage loading coefficient in the range of 2,75 to 2,80. The governing stage and
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Kubiš, Zdeněk. "Protitlaková parní turbina." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230757.

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The theme of the master’s thesis is to design a 60 MW single-casing steam turbine for the two-stage district water heating. The turbine is designed for cogeneration cycle, has four uncontrolled extractions and the outlet down to the heater. First, there is the thermodynamic calculation of the turbine operation with 100 % steam mass flow. Further, the detailed design of flow part with the strength calculation of blades and diaphragms is drawn. By the end of the thesis, the required operations are compared and corresponding heat balancing diagrams are listed. The thesis also includes a turbine l
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Barros, Bruno Vinícius de menezes'. "Efeito da contrapressão e do resfriamento da turbina no desempenho de um motor diesel ottolizado para gás natural." Universidade Federal da Paraíba, 2015. http://tede.biblioteca.ufpb.br:8080/handle/tede/8976.

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Submitted by Maike Costa (maiksebas@gmail.com) on 2017-06-01T11:40:21Z No. of bitstreams: 1 arquivototal.pdf: 3748711 bytes, checksum: 8f8364b8fc3278aa92d66b7d0e9a2400 (MD5)<br>Made available in DSpace on 2017-06-01T11:40:21Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 3748711 bytes, checksum: 8f8364b8fc3278aa92d66b7d0e9a2400 (MD5) Previous issue date: 2015-11-04<br>Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq<br>The cost of the kWh at the peak hour in Brazil may be up to nine times higher than the one at normal hours. This fact has served as motivati
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Conference papers on the topic "Backpressure Turbine"

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Klapper, Norm. "Unique Application of an Epoxy Repair Gel to Eliminate Draft Tube Surface Wear and Cavitation, Potentially Improving Turbine Power Generation Efficiency." In SSPC 2016 Greencoat. SSPC, 2016. https://doi.org/10.5006/s2016-00035.

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Abstract A unique project was completed in Mid-2014 at the Powerhouse #3, Turbine Unit #23 refurbishment, Grand Coulee Dam, located in Washington State. The project scope includes a complete overhaul of the turbine bearings, windings and critical components. As part of the overall scope, the contractor was charged with the task of coating the entire draft tube surface with an epoxy gel. The Bureau of Reclamation, based in Denver, Colorado, had conducted a site survey which indicated severe wear lines, which result in cavitation and the accompanying backpressure on the exiting water outflow to
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Sarabchi, K., and R. Akbarpour. "Thermodynamic Optimization of a Combined Cycle Cogeneration Plant With Backpressure Steam Turbine." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90243.

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Cogeneration heat and power plant has a long history of application in many types of industries, buildings etc, because of its benefits, such as environmental, energy and cost saving. A useful type of cogeneration plants is the combined cycle cogeneration plant. In this paper, thermodynamic optimization analysis for this type of plant (with backpressure steam turbine) and its performance criteria have been developed. It has been shown that the most efficient plant, for a target stack temperature could be achieved when the gas turbine and steam cycle are designed for maximum specific net work a
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Attia, Marco S., Richard W. Eustace, and Shane C. Favaloro. "The Predicted and Measured Effects of Increasing Back Pressure on the Performance of a Turboshaft Engine." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22323.

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This paper presents a comparison between the predicted effect of an increase in backpressure on a turboshaft helicopter engine and the actual results measured in an experimental test program. A generic engine performance program was used to perform a sensitivity study to identify the effect of increases in power turbine exit pressure (backpressure) on other engine performance parameters. The analysis showed that as the backpressure increases the engine increases fuel flow to produce a constant shaft torque (or horsepower), until the maximum power turbine entry temperature is reached. Once this
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Yan, Tao, Yan Zheng, Zhong-Hai wan, Yang-Hui Wu, and Xiao-Bo Wang. "Study of the Power-backpressure Characteristics for the Ultra-supercritical Steam Turbine Unit." In 2016 International Conference on Advanced Materials and Energy Sustainability (AMES2016). WORLD SCIENTIFIC, 2017. http://dx.doi.org/10.1142/9789813220393_0053.

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Hromadka, Ales, and Martin Vins. "Increasing Operation Flexibility of Backpressure Turbine in Cogeneration Plant by TES: Case Study." In 2023 International Conference on Applied Electronics (AE). IEEE, 2023. http://dx.doi.org/10.1109/ae58099.2023.10274319.

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Stępczyńska, Katarzyna, Henryk Łukowicz, Sławomir Dykas, and Sebastian Rulik. "Thermo-Economic Analysis of the Ultra-Supercritical 900 MW Power Unit With the Various Configurations of the Auxiliary Steam Turbine." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68159.

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Coal-based electric power generation remains the basic source of obtaining energy. With increasing pressure to reduce CO2 emissions, improving power unit efficiency has become an issue of utmost significance. The development of technologies related to coal-fired power units does not focus solely on the steam parameters ahead of the turbine. Increasing the live steam parameters usually constitutes the greatest contribution to the rise in the efficiency of a power unit, but the sum of efficiency gains related to the application of other solutions can also be significant and can, in some cases, e
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Xie, Yadong, Xiaohe Yang, Jianguo Ding, Xiaofeng Liu, and Jinzhang Feng. "The Optimization of an Integrated Strut OGV Configuration." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26567.

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In a core-mounted high-bypass ratio aero engine the bypass strut is designed to support the intermediate casing and to go the RDF (radial drive shaft) of a large diameter. Therefore the maximum thickness of the strut and maximum thickness distribution along the chord are restricted by the maximum diameter of the RDF. In order to enhance the total pressure recovery coefficient as well as reducing the backpressure circumferential variation, in this paper we describe the optimization of a datum configuration of the circumferential integrated strut OGV (Outlet Guide Vane). The datum configuration
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Brandstetter, Gottfried, Wolfgang Oberleitner, and Michael Pichler. "How to Change Over Heat Recovery Steam Generators After Gas Turbine Trip." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90648.

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Heat recovery steam generators downstream of gas turbines are often used in combination with process steam applications. Because of the high importance of the required process steam, a boiler trip is more severe than in usual applications, where only electricity is produced. In most cases these boilers are equipped with a supplementary and fresh air firing system having the capacity of replacing the whole waste heat coming from the gas turbine or even more. A fresh air firing system offers the possibility to keep the boiler in operation without the gas turbine running. If the boiler has to sta
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Novak, Ondrej, Marek Bobcik, Vaclav Slama, et al. "Development of Highly Efficient and Robust Ultra-Long Last Stage Blade for High Backpressure." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90350.

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Abstract For modern steam turbines with large operating range and enhanced efficiency an ultra-long last stage rotor blade in a low pressure turbine part for high backpressure and 50 Hz fixed speed operation have been developed. An advanced design approach was used to create the blade shape with a high thermodynamic efficiency, high natural frequencies and a very high safety factor of average radial static stress in the blade span. Furthermore, the tip section of the bucket was improved to decrease a static tension and the hub section was refined to simplify the assembly. Tip and hub airfoils
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Nayak, Sandeep, Erol Ozkirbas, and Reinhard Radermacher. "Modeling of a 27 MW Combined Cycle Cogeneration Plant With Central Cooling Facility." In International Joint Power Generation Conference collocated with TurboExpo 2003. ASMEDC, 2003. http://dx.doi.org/10.1115/ijpgc2003-40161.

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This paper describes the modeling of a 27 MW combined cycle cogeneration plant with 10,000 tons chilled water central cooling facility. The cogeneration plant is designed to provide heating, cooling and electricity from a single fuel source viz., natural gas, though the gas turbines do have an inbuilt dual fuel combustion system. The topping cycle of the combined cycle cogeneration plant consists of two gas turbines each producing 11 MW of electric power at full load. The energy of the exhaust gases from these gas turbines is then utilized to generate steam in two heat recovery steam generator
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Reports on the topic "Backpressure Turbine"

1

Consider Installing High-Pressure Boilers with Backpressure Turbine-Generators. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/875766.

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