Relevant bibliographies by topics / Gas Expanders

Contents

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

Academic literature on the topic 'Gas Expanders'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 July 2025

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Journal articles on the topic "Gas Expanders"

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Hossain, Md Shazzad, Ibrahim Sultan, Truong Phung, and Apurv Kumar. "A Literature Review of the Design, Modeling, Optimization, and Control of Electro-Mechanical Inlet Valves for Gas Expanders." Energies 17, no. 18 (2024): 4569. http://dx.doi.org/10.3390/en17184569.

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The ever-growing concerns about global warming and the rapid depletion of fossil fuels have triggered a rising interest in the research for cleaner, more efficient, and cost-effective energy generation. Organic Rankine cycle systems have immense potential to become a strong alternative to conventional methods of energy generation. However, such systems’ efficiency is limited by the performance of the incorporated gas expanders or prime movers. Conventional gas expanders often utilize ports or cam-operated valves. Ported expanders offer limited efficiency and controllability and produce high em
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Wei, Junying, Gang Li, Guangxian Yin, et al. "Analysis of Flow Characteristics at the Inlet of a Circular Involute Variable Wall Thickness Scroll Expander." Processes 11, no. 11 (2023): 3117. http://dx.doi.org/10.3390/pr11113117.

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This paper mainly studies the effects of the inlet shape on the internal flow field and the output characteristics of a scroll expander. Based on circular involute variable wall thickness scroll profiles, three inlet working cavities are numerically simulated using the CFD method and dynamic mesh technique, thus obtaining the internal flow field, the inlet flow rate, the transient gas force, and the change rule of inlet power loss in the working cavity. The results show that the pressure distribution in the working cavity of the scroll expanders with elliptical and double circular groove inlet
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Lin, Shuai. "A CFD-based study of twin-screw expander performance and inlet structure optimization." Journal of Physics: Conference Series 2441, no. 1 (2023): 012069. http://dx.doi.org/10.1088/1742-6596/2441/1/012069.

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Abstract Twin-screw expanders are widely used for small to medium-sized organic Rankine cycle (ORC) power generation. In order to improve the performance of twin-screw expanders in ORC, this study aims to improve the inlet efficiency and reduce the inlet pressure loss by changing the geometry of the inlet and shell. The CFD transient simulation is used to study the pressure, gas flow conditions and other parameters in the working chamber that are not easily obtained through experiments. The effects of improved size, speed, pressure ratio and internal volume ratio on the performance of the expa
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Belousov, Artem Evgenevich, and Egor Sergeevich Ovchinnikov. "Mathematical Modeling of the Operation of an Expander-Generator Pressure Regulator in Non-Stationary Conditions of Small Gas Pressure Reduction Stations." Mathematics 10, no. 3 (2022): 393. http://dx.doi.org/10.3390/math10030393.

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Long-distance gas transfer requires high pressure, which has to be reduced before the gas is conveyed to the customers. This pressure reduction takes place at natural gas pressure reduction stations, where gas pressure is decreased by using gas flow energy for overcoming local resistance, represented by a throttling valve. This pressure energy can be reused, but it is difficult to implement it at small pressure reduction stations, as the values of unsteadiness significantly increase when the gas approaches consumers, whereas gas flow rate and pressure decrease. This work suggests replacing thr
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Kitt, S. R., and B. D. Rose. "Foothills Decompression/Recompression Facilities—Unique Power Recovery Application in Gas Pipelines." Journal of Engineering for Gas Turbines and Power 116, no. 1 (1994): 143–51. http://dx.doi.org/10.1115/1.2906783.

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Foothills Pipe Lines Ltd. is the Canadian sponsor of the Alaska Natural Gas Transportation System (ANGTS), a pipeline project selected in Canada and the United States as the means for transporting Alaskan gas reserves to the lower 48 United States. Currently, certain Prebuild portions of the ANGTS are in operation delivering Canadian gas to U. S. markets. A recent system expansion of the Eastern Leg Prebuild to accommodate increased Canadian gas exports entailed the construction of Decompression/Recompression facilities at Empress, Alberta to enable high-pressure operation of the Foothills pip
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Fermoselli, N. E. G. "PREDICTING THE IMPACT OF A FCC TURBO EXPANDER ON PETROLEUM REFINERIES." Revista de Engenharia Térmica 9, no. 1-2 (2010): 40. http://dx.doi.org/10.5380/reterm.v9i1-2.61929.

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Implementing a turbo expander connected to a fluid catalytic cracking (FCC) unit in order to produce power from flue gas has already become a common practice in oil refineries worldwide. Despite of recovering energy which used to be wasted in an orifice chamber, the implementation of expander and its skids still requires high investment, which often begins with a third-stage cyclones installation to enhance flue gas cleanness. Moreover, machine and also pipes need to be made with special materials in order to resist high temperatures and erosion. Hence, there are some items to be checked befor
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Khetagurov, V. A., and K. K. Sokolov. "Creation of axial expanders on magnetic supports for natural gas." Chemical and Petroleum Engineering 45, no. 9-10 (2009): 641–42. http://dx.doi.org/10.1007/s10556-010-9252-6.

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Sultan, Ibrahim A. "Optimum design of limaçon gas expanders based on thermodynamic performance." Applied Thermal Engineering 39 (June 2012): 188–97. http://dx.doi.org/10.1016/j.applthermaleng.2012.01.039.

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Zalyatdinov, A. A., and A. F. Shaykhutdinova. "INVESTIGATION OF THE IMPACT OF DRILLING WITH SIMULTANEOUS EXPANSION TO THE RATE OF CHANGE IN THE ZENITH ANGLE OF THE WELL." Problems of Gathering Treatment and Transportation of Oil and Oil Products, no. 1 (March 5, 2024): 28–35. http://dx.doi.org/10.17122/ntj-oil-2024-1-28-35.

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The article discusses the use of various methods and techniques for isolating complication zones during drilling in the oil and gas industry. The main focus is on the process of isolating complication zones using profile closures, which allow maintaining the nominal di-ameter of the wellbore. To achieve this, it is necessary to increase the diameter of the complication interval using expanders. The article notes that the highest efficiency is achieved when drilling and expanding the wellbore simultaneously using expandable expanders. Such expanders have high wear resistance and can withstand s
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Cavalcanti, Eduardo J. C., and Monica Carvalho. "Tackling Dissipative Components Based on the SPECO Approach: A Cryogenic Heat Exchanger Used in Natural Gas Liquefaction." Energies 14, no. 20 (2021): 6850. http://dx.doi.org/10.3390/en14206850.

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The cryogenic industry has been experiencing continuous progress in recent years, primarily due to the global development of oil and gas activities. Natural gas liquefaction is a cryogenic process, with the refrigeration system being crucial to the overall process. The objective of the study presented herein is to carry out an exergoeconomic assessment for a dual nitrogen expander process used to liquefy natural gas, employing the SPecific Exergy COsting (SPECO) methodology. The air coolers and throttling valve are dissipative components, which present fictitious unit cost rates that are reall
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Dissertations / Theses on the topic "Gas Expanders"

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Phung, Truong. "Design and modelling of the limaçon positive displacement gas expander." Thesis, Federation University Australia, 2017. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/165481.

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The limaçon positive displacement technology has been featured in a number of patents over the last 100 years. The technology offers a two-lobe rotor that slides and rotates in a rounded cavity so as to create a pair of variable-volume chambers suited for fluid processing. As such, it can be employed to manufacture gas expanders to extract work from low-grade heat or other heat resources. Positive displacement gas expanders are applied to small-scale power generation plants which can be used for a number of applications such as to improve the energy efficiency of existing thermal processes. Th
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Wang, Wen-Bohr. "Optimization of expander plants /." Access abstract and link to full text, 1985. http://0-wwwlib.umi.com.library.utulsa.edu/dissertations/fullcit/8520757.

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Gohres, John Linton III. "Spectroscopic and computational investigations of molecular interactions in gas-expanded liquids." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24692.

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Thesis (Ph.D.)--Chemical Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Charles A. Eckert; Committee Co-Chair: Charles L. Liotta; Committee Member: J. Carson Meredith; Committee Member: Rigoberto Hernandez; Committee Member: William J. Koros
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LOPES, PAULO ROBERTO PINTO. "USE OF EXPANDERS FOR GENERATING ELECTRICAL ENERGY IN NATURAL GAS PRESSURE REDUCTION STATIONS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=14604@1.

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O gás natural é comprimido para pressões elevadas para que possa ser transportado pelo gasoduto e distribuído aos clientes em pressões mais baixas, através de sua redução em válvulas de controle, num processo adiabático. A termodinâmica mostra que o mesmo estado de saída do gás natural poderia ser conseguido se as válvulas de controle puderem ser substituídas por expansores, gerando trabalho e, portanto, energia elétrica, e com transferência de calor obtida através da queima de combustível, que no caso é o próprio gás natural, para que sua temperatura permaneça a mesma. O investimento nos equi
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Wyatt, Victor T. "Characterization of gas-expanded liquids." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/26006.

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Spuller, Matthew Thomas. "Resist and Residue Removal Using Gas-Expanded Liquids." Diss., Available online, Georgia Institute of Technology, (2003), 2003. http://etd.gatech.edu/theses/available/etd-11072003-150305/.

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Maxey, Natalie Brimer. "Transport and Phase-Transfer Catalysis in Gas-Expanded Liquids." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10411.

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Gas-expanded liquids (GXL) are a new and benign class of liquid solvents that are intermediate in physical properties between normal liquids and supercritical fluids and therefore may offer advantages in separations, reactions, and advanced materials. Phase-transfer catalysis (PTC) is a powerful tool in chemistry that facilitates interaction and reaction between two or more species present in immiscible phases and offers the ability to eliminate the use of frequently expensive, environmentally undesirable, and difficult to remove polar, aprotic solvents. The work presented here seeks to furt
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Shukla, Charu L. "Computationally Probing the Cybotactic Region in Gas-Expanded Liquids." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14510.

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Gas-expanded liquids (GXLs) are novel and environmentally benign solvent systems with applications in reactions, separations, nanotechnology, drug delivery, and microelectronics. GXLs are liquid mixtures consisting of an organic solvent combined with a benign gas, such as CO2, in the nearcritical regime. In this work, molecular dynamics simulations have been combined with experimental techniques to elucidate the cybotactic region or local environment in gas-expanded liquids. Molecular dynamics simulations show clustering of methanol molecules in carbon dioxide-methanol mixtures. This cluster
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Janakat, Malina Elizabeth. "Synergistic Approach to Exploration of the Microstructure of Novel, Tunable Solvents for Reactions, Separations and Catalyst Recycle." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10461.

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Gas-expanded liquids (GXLs) are a new and benign class of pressure-tunable liquid solvents which show tremendous promise as the next sustainable processing medium. In order to realize the potential of GXLs fully, it is necessary to elucidate their cybotactic region and gain an understanding of where properties are different in the bulk and micro-scales and how local structure and order affect both reactions and separations. This work explores the cybotactic region of GXLs and probes the existence and implications of those differences. This study is started by exploring the cybotactic region
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Hill, Elizabeth M. "Benign Tunable Solvents for Improved Processing of Pharmaceutically Relevant Products and Catalysts." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16320.

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Sustainable technologies are vital to reducing the environmental impact of chemical enterprises. Solvents are often seen as just a medium in which a reaction takes place; however they can also play a dominant role in the overall toxicity of a typical pharmaceutical/fine chemicals batch chemical operation. Further, careful solvent selection for a reaction may also lead to more facile separation and purification of products, thus reducing the overall cost of a chemical process. This thesis presents an environmentally benign processing technique for sustainable biocatalytic reactions coupled w
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Books on the topic "Gas Expanders"

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Hutchenson, Keith W., Aaron M. Scurto, and Bala Subramaniam, eds. Gas-Expanded Liquids and Near-Critical Media. American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1006.

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Associates, Cambridge Energy Research. Bulgaria expands its gas transit network: What is next? CERA, 2001.

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Meeting, American Chemical Society, and American Chemical Society. Division of Industrial and Engineering Chemistry, eds. Gas-expanded liquids and near-critical media: Green chemistry and engineering. American Chemical Society, 2009.

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United States. Office of Fossil Energy., ed. Rocky Mountain states natural gas: Resource potential and prerequisites to expanded production. U.S. Dept. of Energy, [Office of Fossil Energy, 2003.

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United States. Bureau of Land Management. Kemmerer Resource Area. Expanded Moxa Arch area natural gas development project, Sweetwater, Lincoln, and Uinta Counties, Wyoming: Draft environmental impact statement. The Bureau, 1995.

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Elliott, R. Neal. Impacts of energy efficiency and renewable energy on natural gas markets : updated and expanded analysis. American Council for an Energy-Efficient Economy, 2005.

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United States. Bureau of Land Management. Kemmerer Resource Area. Final environmental impact statement on the expanded Moxa Arch area natural gas development project: Sweetwater, Lincoln, and Uinta counties, Wyoming. U.S. Dept. of the Interior, Bureau of Land Management, Wyoming State Office, Rock Springs District Office/Kemmerer Resource Area, 1996.

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United States. Bureau of Land Management. Rock Springs District. and United States. Bureau of Land Management. Kemmerer Resource Area., eds. Record of decision for expanded Moxa Arch area natural gas development project, environmental impact statement: Sweetwater, Lincoln, and Uinta Counties, Wyoming. U.S. Dept. of the Interior, Bureau of Land Management, Wyoming State Office, 1997.

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United States. Office of Energy Markets and End Use, ed. Oil and gas development in the United States in the early 1990's: An expanded role for independent producers. Energy Information Administration, Office of Energy Markets and End Use, U.S. Dept. of Energy, 1995.

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Center, Langley Research, ed. Expanded equations for torque and force on a cylindrical permanent magnet core in a large-gap magnetic suspension system. National Aeronautics and Space Administration, Langley Research Center, 1997.

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Book chapters on the topic "Gas Expanders"

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Phung, Truong, Ibrahim Sultan, and Alberto Boretti. "Design of Limaçon Gas Expanders." In Nonlinear Approaches in Engineering Applications. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-27055-5_3.

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Subramaniam, Bala. "Gas Expanded Liquids gas-expanded liquid (GXL) for Sustainable Catalysis gas-expanded liquid (GXL) for sustainable catalysis." In Encyclopedia of Sustainability Science and Technology. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-0851-3_328.

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Sánchez-Camargo, Andrea del Pilar, Jose A. Mendiola, and Elena Ibáñez. "CHAPTER 17. Gas Expanded-liquids." In Green Chemistry Series. Royal Society of Chemistry, 2018. http://dx.doi.org/10.1039/9781788013543-00512.

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Wang, Ruihu, Hu Cai, Hong Jin, ZhuanZhuan Xie, Bala Subramaniam, and Jon A. Tunge. "Hydroformylation in CO2-Expanded Media." In Gas-Expanded Liquids and Near-Critical Media. American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1006.ch010.

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Subramaniam, Bala. "Gas Expanded Liquids for Sustainable Catalysis." In Green Chemistry and Chemical Engineering. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4939-9060-3_328.

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Scurto, Aaron M., Keith Hutchenson, and Bala Subramaniam. "Gas-Expanded Liquids: Fundamentals and Applications." In Gas-Expanded Liquids and Near-Critical Media. American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1006.ch001.

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Subramaniam, Bala. "Gas Expanded Liquids for Sustainable Catalysis." In Innovations in Green Chemistry and Green Engineering. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-5817-3_2.

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Thomas, E. "Development of a New Gas Bearing Helium Expander." In A Cryogenic Engineering Conference Publication. Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0373-2_119.

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Gohres, John L., Rigoberto Hernandez, Charles L. Liotta, and Charles A. Eckert. "Viewing the Cybotactic Structure of Gas-Expanded Liquids." In Gas-Expanded Liquids and Near-Critical Media. American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1006.ch004.

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Swalina, Chet, Sergei Arzhantzev, Hongping Li, and Mark Maroncelli. "Solvatochromism and Solvation Dynamics in CO2-Expanded Liquids." In Gas-Expanded Liquids and Near-Critical Media. American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1006.ch005.

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Conference papers on the topic "Gas Expanders"

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Nakahama, S., K. Saitoh, M. Kawasaki, M.Miyasaka, and H.Yakuwa. "Chromized Coating for Preventing High-Temperature Sulfidation Corrosion of FCC Power Recovery Turbine." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00252.

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Abstract Chromizing was applied as a measure against corrosion of gas expander rotors due to high-temperature sulfidation. Both Waspaloy disk and blades of a gas expander rotor were chromized, after which fretting test and corrosion test were carried out to evaluate the usefulness of the chromizing. Favorable test results were obtained. High-temperature sulfidation corrosion is a problem which involves not only gas expanders but also various energy conversion machinery, such as turbine and boilers, which are operated in high temperature environments with sulfuric compounds. The measure develop
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Yakuwa, Hiroshi, Matsuho Miyasaka, Tetsu Go, et al. "Sulfidation-Resistant Nickel-Base Superalloy for FCC Gas Expander Turbine." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00531.

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Abstract A nickel-base superalloy that has excellent sulfidation resistance, high-temperature tensile properties and hot workability was developed as a material for the rotors of FCC gas expander turbines. The effect of Mo, Ti and/or Al additions on the sulfidation behavior of a Ni-20Cr-13.5Co alloy was investigated in H2-H2S mixtures at 873 K (600 C/1112 F). It was found that increasing the Al content in the alloy could improve the sulfidation resistance of AISI 685 (UNS N07001). Six kinds of forged alloy, in which the Al content was increased while Ti content was decreased, were manufactured
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Cleveland, Anthony. "Energy Recovery With Turbo Expanders." In ASME 1986 International Gas Turbine Conference and Exhibit. American Society of Mechanical Engineers, 1986. http://dx.doi.org/10.1115/86-gt-66.

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In the oil, gas and petrochemical industry, there are many instances where energy is under-utilized, if not actually wasted. In many cases it may be possible to recover some of this energy and obtain useful work, thereby improving plant efficiency and the economics of the operation. The turbo expander is a simple device that can make a significant contribution to the recovery of energy in all kinds of plants. This paper considers some ways in which turbo expanders may be used and looks in detail at an application in the gas industry where the energy lost in pressure reduction may be recovered
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Myers, Blake, Gary Deis, and Tom Shell. "Operating Efficiencies of a Lysholm, Helical Expander for Brayton-Cycle Heat Engines." In ASME 1986 International Gas Turbine Conference and Exhibit. American Society of Mechanical Engineers, 1986. http://dx.doi.org/10.1115/86-gt-301.

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Operating tests on a Lysholm helical expander have been done to develop a data base for comparing the performance of helical expanders with turbine expanders by using simple scaling arguments. The eventual goal of such work would be to develop a rugged and reliable ceramic helical expander for operating at temperatures up to 1300°C (2400°F). We used a 127.5 mm (5.020 in.) metal expander on which we measured seven performance variables against applied pressure ratio at six shaft speeds and an inlet gas temperature of 100°C (212°F). Our data system included: a torque and angular-speed cell to me
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Kannan, Balaji, Krishnamurthy Vaidyanathan, Kiran Pithamber, and Suvendu Mahapatra. "An Investigation in to the Rotordynamics Behavior of Mechanically Coupled Turbo Expander." In ASME 2014 Gas Turbine India Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gtindia2014-8256.

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Considerable amount of mathematical modeling backed by extensive experimental investigations have gone in to the study of the rotordynamics behavior of high speed turbo expanders. These investigations revolve predominantly around the linear &amp; non-linear aspects of hydrodynamic bearings that support these rotating elements. Further, these expanders are not mechanically coupled to the prime mover and hence the impact of lateral vibrations imposed by the interfacing assemblies downstream is not a concern. However, when the expander is mechanically coupled to a prime mover, say by means of gea
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Wang, X. M., Hong Yu Bai, G. F. Xu, Q. Y. Zhang, and M. Zhuang. "Application of Oil-Gas Hybrid Bearing Turbine-Expander in EAST Helium Cryogenic System." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29146.

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Fusion energy with much more advantages could become a serious option for the future energy. The EAST (Experimental Advanced Superconducting Tokomak) device is aiming to study the physical and technical issues involved in stead-state tokamak nuclear fusion. Cryogenic system is one of the most important sub-systems in EAST device, and turbine-expanders are the key components of cryogenic system. In this paper, turbine-expanders with specific configuration in EAST cryogenic system were introduced, and the problem of instability of turbine-expanders in actual refrigerating process was pointed out
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Zhang, Ying, Arun Kumar Narasimhan, Mengjie Bai, Li Zhao, Shuai Deng, and D. Yogi Goswami. "Dynamic Behavior and Off-Design Performance Analysis of Solar Driven ORC Using Scroll Expanders." In ASME 2019 Gas Turbine India Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gtindia2019-2626.

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Abstract Solar driven ORC system is a possible solution for small-scale power generation. A scroll expander is considered due to its better suitability among other positive displacement expanders for small-scale power outputs. This work conducted a test of an ORC system with an expansion valve by varying the working fluid mass flow rate in two scenarios. A dynamic system-level model of ORC was developed and validated with experimental data. The validated model was used to predict the ORC performance considering off-design conditions of expander and solar insolation. The experimental data showe
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Baiguini, Mattia, Michele Doninelli, Gioele Di Marcoberardino, Paolo Giulio Iora, and Costante Mario Invernizzi. "Evaluating the Energy Recovery Potential in Industrial Gas Pipeline Networks: A Preliminary Analysis of Gas Expander Applications for Nitrogen, Oxygen and Hydrogen." In ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/gt2024-121397.

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Abstract The aim of this work is to analyse the potential electrical energy that can be produced from the installation of expanders in the gas pressure reducing stations of industrial gases networks (oxygen, nitrogen and hydrogen). This solution is well established in natural gas grid but not yet implemented in existing technical gases networks. In the first part, the theoretical energy recovery potential is investigated by calculating the isentropic expansion specific power under different expander inlet temperatures and pressure ratios. Then the evaluation of adopting radial or axial expande
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Cleveland, A. "Turbo Expanders for Energy Recovery; Design and Installation of a 250 Kw Unit." In ASME 1988 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1988. http://dx.doi.org/10.1115/88-gt-266.

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Turbo expanders have been used in a number of installations to generate electricity from the energy available in the process of pressure reduction. The turbo expander replaces the regulating valve and duplicates the functions of the valve, controlling pressure and flow while at the same time generating electricity.
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Wright, I. G., and J. Stringer. "Erosion and Corrosion Considerations for PFBC Gas Turbine Expanders." In ASME 1986 International Gas Turbine Conference and Exhibit. American Society of Mechanical Engineers, 1986. http://dx.doi.org/10.1115/86-gt-217.

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Considerable interest has been developed over the past few years in the application of gas turbines to expand the hot, dirty flue gases from pressurized fluidized-bed combustors (PFBCs) burning coal. Although no full-size gas turbine has yet operated on a PFBC, firm commitments have been made to build commercial PFBC-GT power plants. In addition, there are a number of projects at various stages of development aimed at operating gas turbines on dirty fuels ranging from the expansion of flue gas from the combustion of pulverized coal, to the direct firing of coal-water mixtures. Common concerns
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Reports on the topic "Gas Expanders"

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Allison, Tim. PR-015-08210-R01 Alternatives to Gas Expander Starters for Gas Turbines. Pipeline Research Council International, Inc. (PRCI), 2009. http://dx.doi.org/10.55274/r0010972.

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The objective of the project is to identify starter concepts for starting pipeline gas turbines, classify them according to their readiness for use with a pipeline gas turbine, and evaluate the suitability of each concept for use in pipeline applications.
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Liddiard, T. P., and D. Price. The Expanded Large Scale Gap Test. Defense Technical Information Center, 1987. http://dx.doi.org/10.21236/ada179406.

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3

Charles A. Eckert, Charles L. Liotta, and Rigoberto Hernandez. Gas-Expanded Liquids: Synergism of Experimental and Computational Determinations of Local Structure. Office of Scientific and Technical Information (OSTI), 2007. http://dx.doi.org/10.2172/910459.

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Giles Álvarez, Laura, Juan Carlos Vargas-Moreno, and Leonardo Pacheco Tenório Cavalcanti. Maps for Gaps: A Geospatial Approach to Estimating Development Gaps in Haiti. Inter-American Development Bank, 2021. http://dx.doi.org/10.18235/0003811.

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This paper presents the results of a development gap analysis for Haiti using a geospatial approach. Gaps are calculated and characterized by means of qualitative and quantitative techniques, including macroeconomic, microeconomic, and geospatial data analyses. The analysis identifies, presents, and discusses 16 sectoral gaps. It is then expanded by overlapping the sectoral gaps to identify possible relations and spillover effects between them. The results suggest that transportation, early childhood education, and crime and insecurity gaps are the most significant in terms of the area and pop
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Barnes, B. L41025A PRCI Research Results on In-Line Inspection Technology Field Tests - Expanded. Pipeline Research Council International, Inc. (PRCI), 1988. http://dx.doi.org/10.55274/r0011372.

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This report will briefly describe the performance of eddy current and magnetic flux leakage systems and the difficulties that have been recognized as impediments for stress corrosion crack detection on ILI vehicles. In addition, two promising systems, based on electromagnetic acoustic transducers (EMAT's) and piezoelectrics (elastic waves), have emerged from the PRCI research efforts. Results of field testing in Casa Grande, Arizona on an El Paso Natural Gas abandoned pipeline using these systems will be summarized and will show the state of development of both EMAT's and piezoelectrics (elast
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Aquino, Sixto, and Jose Claudio Linhares Pires. First Independent Evaluation of the Expanded Project Supervision Report Exercise. Inter-American Development Bank, 2007. http://dx.doi.org/10.18235/0010615.

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This document evaluates the first exercise of the Expanded Project Supervision Reports (XPSR) elaborated by PRI in 2006. The XPSR exercise was done in order to comply with the Good Practice Standards (GPS) of the Evaluation Cooperation Group of the Multilateral Development Banks (ECG-MDB). This document also reports on OVE's validation of the project performance ratings, findings and lessons learned that were identified in the XPSR exercise conducted by PRI.This report presents the main findings and conclusions from the evaluation exercise.
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George, Darin, and Christopher Grant. PR-015-15601-R01 Pulsation Effects on Ultrasonic Meters Phase II. Pipeline Research Council International, Inc. (PRCI), 2016. http://dx.doi.org/10.55274/r0010905.

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Transmission and storage operations frequently move natural gas using reciprocating compressors that may generate flow pulsations. Most measurement systems cannot accurately measure the flow rate of a pulsating gas stream, and the resulting errors can cause inaccurate gas volumes and accounting imbalances. A previous PRCI research project tested whether recent advances in ultrasonic meters may allow them to function without measurement error in pulsating flows. This project expanded on the previous work and tested similar ultrasonic meters to look for relationships between ultrasonic meter tra
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Moore, Jeff. Development of a High-Efficiency Hot Gas Turbo-expander and Low-Cost Heat Exchangers for Optimized CSP Supercritical CO2 Operation. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1560368.

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9

Chapman and Keshavarz-Valian. L51988 Development of Turbocharger-Reciprocating Engine Simulation (T-RECS). Pipeline Research Council International, Inc. (PRCI), 2002. http://dx.doi.org/10.55274/r0010947.

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The objective of this project was to develop a numerical simulation system that can be used to optimize the performance of a large-bore reciprocating engine. The simulation system will include sub-models of all major components between the inlet filter and the exhaust pipe of the engine. The deliverable product of this project is the software program, Turbocharger-Reciprocating Engine Computer Simulation (T-RECS), which was developed at the National Gas Machinery Laboratory at Kansas State University. The simulation program calls upon a database of system components to allow the user specify a
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Botros, Geerligs, and Given. L52187 Decompression Response of High-Pressure Natural Gas Pipelines Under Rupture or Blowdown Conditions. Pipeline Research Council International, Inc. (PRCI), 2004. http://dx.doi.org/10.55274/r0010394.

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The Pipeline Research Council International, Inc. found that Scandpower has software that is capable of predicting the transient response of a pipeline segment transporting either conventional or enriched dense phase natural gas mixtures when subjected to a controlled blow down or an uncontrolled rupture event. Consequently PRCI expressed a desire to pursue an experimental work to provide the basis for evaluating the adequacy of the existing software and/or define further development if any. NOVA Research and Technology Corporation (NRTC) was awarded a contract to perform the experimental work
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