Academic literature on the topic 'Cryogenic fuels'

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Journal articles on the topic "Cryogenic fuels"

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Svyatushenko, V. V., and D. A. Yagodnikov. "Comprehensive Analysis of Fuel Efficiency for a Ramjet-Equipped Spaceplane." Herald of the Bauman Moscow State Technical University. Series Mechanical Engineering, no. 5 (134) (October 2020): 19–40. http://dx.doi.org/10.18698/0236-3941-2020-5-19-40.

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The paper considers fuels used as a working body in ramjets. The study aims to conduct a comprehensive examination that includes comparing physical, chemical and power characteristics of the fuels, as well as the results of thermodynamic and ballistic analyses, in order to ensure the best possible outcome in terms of layout and range of the spaceplane simulated. We analysed existing publications to state the main requirements for fuels to be used in spaceplane ramjets. We present a method of estimating fuel efficiency. The requirements developed for the spaceplane simulated were used to select
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Komkov, M. A., and Y. V. Badanina. "Design and Technology of Winding Curvilinear Pipelines from Sintered Polyimide-Fluoroplastic Film." Proceedings of Higher Educational Institutions. Маchine Building, no. 10 (715) (October 2019): 86–92. http://dx.doi.org/10.18698/0536-1044-2019-10-86-92.

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This article deals with the issues related to designing and manufacturing light and reliable pipelines made of composite materials for missile technology, aircraft and land vehicles running on cryogenic fuel. Multi-layer straight and curvilinear pipelines made by winding polyimide films can significantly reduce the weight and level of bending loads. The article presents the geometry of a typical element of a curvilinear pipeline and the design of the flange of a cryogenic pipeline. A method for connecting the flange shank to the film shell is proposed and the results of testing pipelines made
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Lee, Dong-Ha, Seung-Joo Cha, Jeong-Dae Kim, Jeong-Hyeon Kim, Seul-Kee Kim, and Jae-Myung Lee. "Practical Prediction of the Boil-Off Rate of Independent-Type Storage Tanks." Journal of Marine Science and Engineering 9, no. 1 (2021): 36. http://dx.doi.org/10.3390/jmse9010036.

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Because environmentally-friendly fuels such as natural gas and hydrogen are primarily stored in the form of cryogenic liquids to enable efficient transportation, the demand for cryogenic fuel (LNG, LH) ships has been increasing as the primary carriers of environmentally-friendly fuels. In such ships, insulation systems must be used to prevent heat inflow to the tank to suppress the generation of boil-off gas (BOG). The presence of BOG can lead to an increased internal pressure, and thus, its control and prediction are key aspects in the design of fuel tanks. In this regard, although the therma
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Didmanidze, Otari, Alexander Afanasev, and Ramil Khakimov. "Mathematical model of the liquefied methane phase transition in the cryogenic tank of a vehicle." Journal of Mining Institute 243 (June 11, 2020): 337. http://dx.doi.org/10.31897/pmi.2020.3.337.

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In order to increase the efficiency of using vehicles (VEH) in mining and quarrying conditions, it is necessary to improve the components of gas equipment (cryogenic tank, gas nozzles, fuel supply cryogenic tubes, etc.) for supplying liquefied natural gas to the engine, as well as storage of liquid methane in a cryogenic tank with a long service life. For this, it is necessary to consider the process of heat and mass transfer of liquefied natural gas in a two-phase liquid-gas medium, taking into account the phase transition in the closed volume of the cryogenic tank under consideration.
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Shishkov, V. A. "THE METHOD OF CONTROLLING THE SUPPLY OF CRYOGENIC FUEL IN A GAS TURBINE ENGINE." Journal of Dynamics and Vibroacoustics 6, no. 3 (2021): 33–40. http://dx.doi.org/10.18287/2409-4579-2020-6-3-33-40.

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increasing the efficiency of the power plant. A method of controlling the supply of cryogenic fuel to a gas turbine engine is to pump its liquid phase, followed by its separation into two parts and controlling the flow rate of each part. Heated the first part of the cryogenic fuel to a gaseous state in the heat exchanger, mixing it with the second part and feeding the resulting mixture of cryogenic fuel into the combustion chamber. The first part of the cryogenic fuel flow rate is passed through the heat exchanger Gta = Gsm [Ср_sm (Тfp + T) il] / [ig il], where Gsm is the consumption of cryoge
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Kolesnikov, A. S., T. V. Grasko, and V. V. Raznoschikov. "Improving the efficiency of the powerplant of an unmanned aerial vehicle through the use of cryogenic fuel." VESTNIK of Samara University. Aerospace and Mechanical Engineering 19, no. 3 (2020): 7–17. http://dx.doi.org/10.18287/2541-7533-2020-19-3-7-17.

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The article is devoted to increasing the efficiency of the power plant of an unmanned aerial vehicle through the use of cryogenic fuel. It has been substantiated that the creation of a power plant is based on an integrated approach to the Aircraft Power Plant Fuel system and ensures a significant achievement of perfection indicators according to high-level criteria (fuel consumption per hour (kilometer), range, flight duration, etc.) Analysis of energetic properties of some types of aviation fuels showed that gas fuels in their properties are generally superior to liquid ones, except for one t
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Dubov, Georgiy, Dmitriy Trukhmanov, Sergey Nokhrin, and Aleksey Sergel. "Method for installing cryogenic fuel tanks on the deck of BelAZ 7513 mining dump truck." E3S Web of Conferences 174 (2020): 03016. http://dx.doi.org/10.1051/e3sconf/202017403016.

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The state of the issue of the relevance and efficiency of the technology of using liquefied natural gas as a partial replacement of diesel fuel in mining vehicles is considered. It is argued that this technology does not require complex and time-consuming re-engineering of internal com- bustion engines, which makes it economically feasible. It is noted that liq- uefied natural gas seems to be the most promising alternative to petroleum motor fuels in heavy-duty mining dump trucks. The use of liquefied natu- ral gas as a motor fuel reduces the environmental burden; increases the energy efficien
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Park, Minho, Jisun Kim, Changmin Pyo, Joonsik Son, and Jaewoong Kim. "Research for the Optimal Flux-Cored Arc Welding Process of 9% Nickel Steel Using Multi Object Optimization with Solidification Crack Susceptibility." Materials 14, no. 7 (2021): 1659. http://dx.doi.org/10.3390/ma14071659.

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The environment of the global shipbuilding market is changing rapidly. Recently, the International Maritime Organization (IMO) has tightened regulations on sulfur oxide content standards for marine fuels and tightened sulfur oxide emission standards for the entire coastal region of China to consider the environment globally and use LNG as a fuel. There is a tendency for the number of vessels to operate to increase significantly. To use cryogenic LNG fuel, various pieces of equipment, such as storage tanks or valves, are required, and equipment using steel, which has excellent impact toughness
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Nekhoroshikh, Gennady E. "Experimental studies of the performance of the heat-shielding layer of composite pipelines during cooling with liquid hydrogen." RUDN Journal of Engineering Researches 20, no. 1 (2019): 7–13. http://dx.doi.org/10.22363/2312-8143-2019-20-1-7-13.

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The development of technology for aircraft and rocket engines more efficient and environmentally friendly cryogenic fuels in the form of liquefied gases: hydrogen (vinyl), oxygen (oxide), natural gas (methane), required the creation of pipelines from modern composite materials, as well as new thermal insulation coatings (TIC), providing reliable protection of these highways from external heat leakage. Fuel out-of-flight manifolds of reusable aircraft require a particularly reliable TIC, since during the operation of the product, their multi-cycle cooling down occurs when pouring cryogenic fuel
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Rao, Arvind Gangoli, Feijia Yin, and Henri Werij. "Energy Transition in Aviation: The Role of Cryogenic Fuels." Aerospace 7, no. 12 (2020): 181. http://dx.doi.org/10.3390/aerospace7120181.

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Aviation is the backbone of our modern society. In 2019, around 4.5 billion passengers travelled through the air. However, at the same time, aviation was also responsible for around 5% of anthropogenic causes of global warming. The impact of the COVID-19 pandemic on the aviation sector in the short term is clearly very high, but the long-term effects are still unknown. However, with the increase in global GDP, the number of travelers is expected to increase between three- to four-fold by the middle of this century. While other sectors of transportation are making steady progress in decarbonizi
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Dissertations / Theses on the topic "Cryogenic fuels"

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Campari, Alessandro. "Design and optimization of an emergency system for cryogenic fuels." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23775/.

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The use of light hydrocarbons is desirable in order to mitigate the human impact on the environment. Besides, this strategy is a forerunner solution for the implementation of a hydrogen economy in the long term. Cryogenic conditions represent an attractive option to make the use of these fuels more sustainable. Since the bottleneck for their large-scale adoption is represented by safety aspects, an emergency auto-thermal burner was designed. This safety system has the purpose to dispose of the content of a tank truck, in order to avoid the loss of containment and the accidental release of LNG
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Atienza, Márquez Antonio. "Exergy recovery from LNG-regasification for polygeneration of energy." Doctoral thesis, Universitat Rovira i Virgili, 2020. http://hdl.handle.net/10803/670489.

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El Gas Natural Liquat (GNL) és una excel·lent font d'exergia física a causa de la seva temperatura criogènica i, habitualment, elevada pressió de regasificació. Encara que aquest potencial exergètic es pot utilitzar, com a un subproducte de la regasificació, en multitud d'aplicacions, són molt poques les vegades que és aprofitat a causa d’alguns problemes com son les baixes eficiències i limitada competitivitat econòmica dels sistemes proposats. A més, les solucions proposades per augmentar l'eficiència normalment requereixen d'estructures molt complexes i elevades inversions. L'objectiu d'aq
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Reyes, Allan B. "Cryogenic, compressed, and liquid hydrogen fuel storage in vehicles." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40475.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.<br>Vita.<br>Includes bibliographical references.<br>Hydrogen is the viable energy carrier of future energy and transportation systems due to its clean emissions, light weight, and abundance. Its extremely low volumetric density, however, presents significant challenges to storage onboard vehicles. The study involves a survey of the current state of direct hydrogen storage technologies-cryogenic, compressed, and liquid storage-and an analysis of the problems associated with its storage. The significant
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Dannet, Grégoire. "Integration of cryogenic tanks and fuel cells for future hydrogen-powered aircraft." Thesis, Linköpings universitet, Fluida och mekatroniska system, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-176929.

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Hydrogen is seen as the green fuel of the future for the aeronautical sector allowing to reduce the carbon footprint of commercial aviation. It is well established that the release of carbon emissions triggers global warming. Aviation, like many other industries, must reduce them. This study aims to integrate cryogenic hydrogen storage onboard an existing aircraft and study two different propulsion systems, namely hydrogen combustion and fuel cells. A cryogenic tank was modelled and then designed to fit in the fuselage of an A321. Two configurations were studied, one consisting of one tank at
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Fedock, John Andrew. "Low temperature polymer electrolyte fuel cell performance degradation." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002565.

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Pickle, Brent Durrell. "Evaluation of stress in bmi-carbon fiber laminate to determine the onset of microcracking." Thesis, Texas A&M University, 2004. http://hdl.handle.net/1969.1/1523.

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In this work the conditions for which a (0,90,90,0,0,90)s BMI-carbon fiber laminate will initiate transverse microcracking are determined for the fabrication of a cryogenic fuel tank for use in a Reusable Launch Vehicle (RLV). This is accomplished using a quadratic interaction criterion failure analysis on the total stress state at possible launch conditions. There are three major sources of stress, that is, thermal residual stress, internal pressure stress, and applied load stress, that are evaluated at the launch stage to determine the total stress state. To assess the accuracy of the ana
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Keefer, Keaton Andrew. "DEVELOPMENT AND VALIDATION OF AN ANALYTICAL CHARGE-HOLD-VENT MODEL FOR CRYOGENIC TANK CHILLDOWN." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1364996750.

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Hartwig, Jason W. "Liquid Acquisition Devices for Advanced In-Space Cryogenic Propulsion Systems." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1396562473.

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North, Thomas B. "Liquid Nitrogen Propulsion Systems for Automotive Applications: Calculation of Mechanical Efficiency of a Dual, Double-acting Piston Propulsion System." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc6070/.

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A dual, double-acting propulsion system is analyzed to determine how efficiently it can convert the potential energy available from liquid nitrogen into useful work. The two double-acting pistons (high- and low-pressure) were analyzed by using a Matlab-Simulink computer simulation to determine their respective mechanical efficiencies. The flow circuit for the entire system was analyzed by using flow circuit analysis software to determine pressure losses throughout the system at the required mass flow rates. The results of the piston simulation indicate that the two pistons analyzed are very ef
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Thiaucourt, Jonas. "Méthodes et modèles pour l’étude de faisabilité des navires propulsés au gaz naturel liquéfié." Thesis, Ecole centrale de Nantes, 2019. http://www.theses.fr/2019ECDN0032/document.

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Rapporté à la tonne de fret, le trafic maritime est un mode de transport relativement « propre ». Néanmoins, par l’intensification des échanges mondiaux, sa part dans les émissions de Gaz à Effet de Serre (GES) au niveau mondial est appelée à augmenter. Conscients des effets néfastes associés aux GES, les pays membres des nations unies, via l’organisation maritime internationale, imposent le cadre réglementaire pour que ce secteur, vital dans une économie mondialisée, demeure écologiquement acceptable. Des objectifs ambitieux sont établis à court (2020) et moyen terme (2050). Or, d’après l’hyp
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Books on the topic "Cryogenic fuels"

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United States. National Aeronautics and Space Administration., ed. Test plan, task 5, subtask 5.2, early on-orbit TPS debris impact tests. Rockwell Aerospace, Space Systems Division, 1994.

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J, Nowobilski J., and Lewis Research Center, eds. Airborne rotary air separator study: Final report. Praxair, Inc., 1992.

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Airborne rotary air separator study: Final report. Praxair, Inc., 1992.

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1963-, Stephens Craig A., and United States. National Aeronautics and Space Administration. Scientific and Technical Information Program., eds. Predicted thermal response of a cryogenic fuel tank exposed to simulated aerodynamic heating profiles with different cryogens and fill levels. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1991.

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Cryogenic reactant storage for lunar base regenerative fuel cells. National Aeronautics and Space Administration, 1989.

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Numerical modeling of a cryogenic fluid within a fuel tank. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1994.

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United States. National Aeronautics and Space Administration. Scientific and Technical Information Program., ed. Numerical modeling of a cryogenic fluid within a fuel tank. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1994.

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United States. National Aeronautics and Space Administration., ed. Cryogenic and simulated fuel jet breakup in argon, helium, and nitrogen gasflows. National Aeronautics and Space Administration, 1995.

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United States. National Aeronautics and Space Administration., ed. Characteristics of vaporizing cryogenic sprays for rocket combustion modeling. National Aeronautics and Space Administration, 1994.

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United States. National Aeronautics and Space Administration., ed. Characteristics of vaporizing cryogenic sprays for rocket combustion modeling. National Aeronautics and Space Administration, 1994.

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Book chapters on the topic "Cryogenic fuels"

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Post, Adrian, David Mumford, Robbi McDonald, and Gage Garner. "Managing cryogenic fuels on heavy-duty HPDI vehicles." In Proceedings. Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-30500-0_6.

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Maria, S. "The Assessment and Comparison of Alternative and Traditional Fuels from a Study of the Vehicle’s On-Road Performance and Emissions." In Advances in Cryogenic Engineering. Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9047-4_153.

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Greer, Donald. "Cryogenic Fuel Tank Draining Analysis Model." In Advances in Cryogenic Engineering. Springer US, 2000. http://dx.doi.org/10.1007/978-1-4615-4215-5_33.

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Peschka, W. "Cryogenic Fuel Technology and Elements of Automotive Vehicle Propulsion Systems." In Advances in Cryogenic Engineering. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3368-9_47.

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Green, M. A., A. Manikowski, G. Noland, and R. L. Golden. "A Fuel Cell Power Supply for Long Duration Balloon Flights Using Stored Cryogens." In Advances in Cryogenic Engineering. Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9047-4_158.

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Adkins, Roy E., and H. E. Sutton. "Economics of Liquefied Natural Gas Production, Transport and Distribution for End Use as a Transportation Fuel." In Advances in Cryogenic Engineering. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2522-6_5.

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Burleigh, Douglas D., James E. Engel, and David R. Kuhns. "Laser Shearographic Testing of Foam Insulation on Cryogenic Fuel Tanks." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2848-7_53.

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Vishnu, S. B., and Biju T. Kuzhiveli. "Effect of Roughness Elements on the Evolution of Thermal Stratification in a Cryogenic Propellant Tank." In Low-Temperature Technologies [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98404.

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The cryogenic propulsion era started with the use of liquid rockets. These rocket engines use propellants in liquid form with reasonably high density, allowing reduced tank size with a high mass ratio. Cryogenic engines are designed for liquid fuels that have to be held in liquid form at cryogenic temperature and gas at normal temperatures. Since propellants are stored at their boiling temperature or subcooled condition, minimal heat infiltration itself causes thermal stratification and self-pressurization. Due to stratification, the state of propellant inside the tank varies, and it is essential to keep the propellant properties in a predefined state for restarting the cryogenic engine after the coast phase. The propellant’s condition at the inlet of the propellant feed system or turbo pump must fall within a narrow range. If the inlet temperature is above the cavitation value, cavitation will likely to happen to result in the probable destruction of the flight vehicle. The present work aims to find an effective method to reduce the stratification phenomenon in a cryogenic storage tank. From previous studies, it is observed that the shape of the inner wall surface of the storage tank plays an essential role in the development of the stratified layer. A CFD model is established to predict the rate of self-pressurization in a liquid hydrogen container. The Volume of Fluid (VOF) method is used to predict the liquid–vapor interface movement, and the Lee phase change model is adopted for evaporation and condensation calculations. A detailed study has been conducted on a cylindrical storage tank with an iso grid and rib structure. The development of the stratified layer in the presence of iso grid and ribs are entirely different. The buoyancy-driven free convection flow over iso grid structure result in velocity and temperature profile that differs significantly from a smooth wall case. The thermal boundary layer was always more significant for iso grid type obstruction, and these obstructions induces streamline deflection and recirculation zones, which enhances heat transfer to bulk liquid. A larger self-pressurization rate is observed for tanks with an iso grid structure. The presence of ribs results in the reduction of upward buoyancy flow near the tank surface, whereas streamline deflection and recirculation zones were also perceptible. As the number of ribs increases, it nullifies the effect of the formation of recirculation zones. Finally, a maximum reduction of 32.89% in the self-pressurization rate is achieved with the incorporation of the rib structure in the tank wall.
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"Hydrogen Transmission in Pipelines and Storage in Pressurized and Cryogenic Tanks." In Hydrogen Fuel. CRC Press, 2008. http://dx.doi.org/10.1201/9781420045772.ch10.

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Shindo, Yasuhide, and Fumio Narit. "Piezomechanics in PZT Stack Actuators for Cryogenic Fuel Injectors." In Smart Actuation and Sensing Systems - Recent Advances and Future Challenges. InTech, 2012. http://dx.doi.org/10.5772/50495.

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Conference papers on the topic "Cryogenic fuels"

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Rehman, Wajiha, Muhammad Farhan, and Fatima Rehman. "A Review of Cryogenics Applications for Power and Energy." In ASME 2020 Power Conference collocated with the 2020 International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/power2020-16911.

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Abstract Cryogenic technologies use cryogens such as natural gas, nitrogen, helium, hydrogen, argon, and oxygen as main working fluids. These cryogenic technologies and cryogens are emerging in the fields of energy storage, power generation, and eco-friendly fuels. Recently, researchers have proposed to integrate cryogenic systems with power generation systems including Nuclear power plants and wind turbines, to store surplus energy during the off-peak hours and use it during peak hours. The basic idea is to convert air or some other cryogen into liquid during the off-peak hours and expand it
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Hannon, Charles L., Brady Krass, Jake Hogan, and John Brisson. "Modified-Collins cryocooler for zero-boiloff storage of cryogenic fuels in space." In ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the Cryogenic Engineering Conference - CEC, Volume 57. AIP, 2012. http://dx.doi.org/10.1063/1.4706988.

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Larson, C., K. Pfeil, M. DeRose, and P. Garrick. "High pressure combustion of cryogenic solid fuels for hybrid rockets." In 32nd Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-2594.

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Carrick, Patrick, and C. Larson. "Lab scale test and evaluation of cryogenic solid hybrid rocket fuels." In 31st Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-2948.

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Avila, Raudel O., Md S. Islam, and Pavana Prabhakar. "Thermal Gradient on Hybrid Composite Propellant Tank Materials at Cryogenic Temperatures." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65727.

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Cryogenic tanks are devices that are commonly used to store extremely low temperature fluids, usually in their liquid state. Cryogenic fuel tanks carry cryogenic propellants such as liquid oxygen, liquid methane or liquid hydrogen, at subfreezing temperatures in its condensed form in order to generate highly combustible liquids. This type of tank is exposed to an extremely cold temperature in its interior and to ambient temperature on its external surface resulting in large temperature gradient across the thickness of the wall. In this paper, hybrid textile composites with carbon and Kevlar® f
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Zhang, Na, Ruixian Cai, and Wei Wang. "Study of Near-Zero CO2 Emission Thermal Cycles With LNG Cryogenic Exergy Utilization." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38605.

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Compared with other fossil fuels, liquefied natural gas (LNG) supplies relatively clean energy because its low contribution to environmental pollution. Furthermore, while 10% of the gas energy was required for its liquefaction, the valuable high cryogenic (at ∼110 K) exergy of the LNG is wasted in many LNG receiving terminals worldwide, by uselessly cooling the seawater used for its re-vaporization. This cryogenic exergy is, however, as an excellent power source. In addition, due to the increasing concern about global climate change, the development of power system which minimizes CO2 emission
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Pasini, Gianluca, Stefano Frigo, Marco Antonelli, and Maria Berardi. "Numerical Investigation on LNG Injection in a SI-ICE." In ASME 2018 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icef2018-9532.

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Since the beginning of this century, Liquefied Natural Gas (LNG) has been attracting more and more attention as a cleaner energy alternative to other fossil fuels, mainly due to the possibility to transport it over longer distances than natural gas in pipelines and lower environmental impact than other liquid fuels. It is expected that this trend in the use of LNG will lead to steady increases in demand over the next few decades. At present, in the automotive sector, natural gas is employed as fuel in spark-ignited (SI) engines in the gas phase (CNG) adopting port-fuel injection system (PFI) i
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Gambini, M., and M. Vellini. "Overall Performance of H2/O2 Cycle Power Plants Based on Steam-Methane Reforming." In 2002 International Joint Power Generation Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ijpgc2002-26075.

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In this paper the overall performance of a H2/O2 cycle has been evaluated. This typology of power plants requires a material and energetic integration with hydrogen and oxygen production systems. The steam-methane reforming, for the hydrogen-rich fuel production, and the cryogenic air separation, for the oxidiser production, have been investigated, quantifying all their thermal and mechanical requirements. At first, the thermodynamic performance of this cycle has been evaluated, considering the presence of incondensable gases, owing to the processes that provide H2 from fossil fuels and O2 fro
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Benson, C. M., J. M. Ingram, P. N. Battersby, D. Mba, V. Sethi, and A. M. Rolt. "An Analysis of Civil Aviation Industry Safety Needs for the Introduction of Liquid Hydrogen Propulsion Technology." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90453.

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Abstract Over the next few decades air travel is predicted to grow, with international agencies, manufacturers and governments predicting a considerable increase in aviation use. However, based on current fuel type, International Civil Aviation Organization (ICAO) project emissions from aviation are estimated to be seven to ten times higher in 2050 than in 1990. These conflicting needs are problematic and have led to the EU Flightpath 2050 targeting dramatic emissions reductions for the sector (75% CO2, 90% NOX by 2050). One proposed solution, decreasing carbon emissions without stunting the i
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Pucher, G., and W. D. Allan. "Turbine Fuel Ignition and Combustion Facility for Extremely Low Temperature Conditions." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53620.

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As the temperature of combustion air and fuels are reduced, the ability to achieve ignition within gas turbine engines becomes increasingly difficult. Several factors share responsibility, related largely to the physical characteristics of fuel emerging from nozzles, whereby an increasing fuel viscosity with temperature reduction results in larger average fuel droplets. The ensuing reduced surface area hinders fuel evaporation within an environment where evaporation is already impeded by low partial pressures due to low ambient temperature conditions and/or depending on the mode of operation,
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Reports on the topic "Cryogenic fuels"

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Eash, D. T. Cryogenic Thermal Expansion of Y-12 Graphite Fuel Elements. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1087006.

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