Academic literature on the topic 'Saturated water steam'

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Journal articles on the topic "Saturated water steam"

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Bruining, Johannes, Dan Marchesin, and Stephen Schecter. "Steam condensation waves in water-saturated porous rock." Qualitative Theory of Dynamical Systems 4, no. 2 (September 2004): 205–31. http://dx.doi.org/10.1007/bf02970859.

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Zhang, Di, Qi Luo, Wei Huang, and Kan Wang. "ICONE23-1027 NUMERICAL INVESTIGATION OF BINARY SATURATED WATER DROPLET'S COLLISION IN HIGH PRESSURE STEAM." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2015.23 (2015): _ICONE23–1—_ICONE23–1. http://dx.doi.org/10.1299/jsmeicone.2015.23._icone23-1_16.

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Westman, M. A. "Computation of nozzle flow capacities for superheated steam, subcooled water, and saturated steam/water mixtures." Journal of Loss Prevention in the Process Industries 21, no. 6 (November 2008): 567–78. http://dx.doi.org/10.1016/j.jlp.2008.06.002.

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Xu, An Zhu, Long Xin Mu, Xiang Hong Wu, Zi Fei Fan, and Lun Zhao. "Superiority of Superheated Steam Flooding in Development of High Water-Cut Heavy Oil Reservoir." Advanced Materials Research 616-618 (December 2012): 992–95. http://dx.doi.org/10.4028/www.scientific.net/amr.616-618.992.

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The dryness of superheated steam is 100% and it exists in the form of pure steam whose properties are like ideal gas. When the steam has a large degree of superheat, it may take a relatively long time to cool, during which time the steam is releasing very little energy and transmitted long distances. The heating radius of superheated steam in the formation is 5-10m larger than saturated steam. In the heating area of superheated steam, the comprehensive effects by superheated steam (crude oil viscosity reduction, improved flow environment, changes in rock wettability and improved oil displacement efficiency, etc.) is much higher than that of saturated steam. Superheated steam stimulation in Kenkyak high water cut heavy oil reservoir pilot test results showed that the average daily oil production of single well by superheated steam stimulation was 2-4 times than that of saturated steam stimulation. Superheated steam is more effective to heat water-invaded oil reservoir than saturated steam.
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Dzurenda, Ladislav. "The Effect of Moisture Content of Black Locust Wood on the Heating in the Saturated Water Steam during the Process of Colour Modification." MATEC Web of Conferences 168 (2018): 06004. http://dx.doi.org/10.1051/matecconf/201816806004.

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The effect of moisture content of black locust wood on the heating of sawn timber with the thickness of h = 32 mm in saturated water steam during the processes of colour modifications by modes: mode I – temperature of saturated water steam t = 112 ± 2.5 °C for τ = 5.5 hours, mode II – temperature of saturated water steam t = 127 ± 2.5 °C for τ = 6.5 hours, and mode III – temperature of saturated water steam t = 137 ± 2.5 °C for τ = 7.5 hours is analysed in the paper. The increase in moisture content affects the heating time, it lasts longer. When the moisture content of black locust wood ranges from W = 60 – 65 %, the heating time by modes I – III did not last longer than the time Δτ ≤ 0.5 min. and no negative impact on the final colour modification is observed.
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Shagapov, V. Sh, L. A. Nasyrova, and E. V. Galiakbarova. "Injection of water into a porous medium saturated with steam." High Temperature 38, no. 5 (September 2000): 783–90. http://dx.doi.org/10.1007/bf02755934.

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Mityakov, V. Y., S. Z. Sapozhnikov, E. R. Zainullina, A. Y. Babich, O. A. Milto, and K. S. Kalmykov. "Gradient heat flux measurement while researching of saturated water steam condensation." Journal of Physics: Conference Series 891 (November 10, 2017): 012128. http://dx.doi.org/10.1088/1742-6596/891/1/012128.

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Barmin, A. A., and G. G. Tsypkin. "Mathematical model of water injection into a geothermal steam-saturated reservoir." Fluid Dynamics 31, no. 6 (November 1996): 874–79. http://dx.doi.org/10.1007/bf02030107.

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Spatz, R., H. J. Laake, D. Mewes, and F. Mayinger. "Counter-current flow behaviour of steam-saturated water and steam-subcooled water in the fuel element top nozzle area." Nuclear Engineering and Design 99 (February 1987): 131–39. http://dx.doi.org/10.1016/0029-5493(87)90115-4.

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Liu, Yan, Hui-lie Shi, Chun Gui, Xian-yuan Wang, and Rui-feng Tian. "Effect of Saturated Steam Carried Downward on the Flow Properties in the Downcomer of Steam Generator." Energies 12, no. 19 (September 24, 2019): 3650. http://dx.doi.org/10.3390/en12193650.

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The saturated water separated by the steam separator in a natural circulation steam generator may carry a small amount of saturated steam into the downcomer. The steam contacts subcooled water and condenses directly in the downcomer causing the variations in the pressure and steam quality and likely affecting the stability of the water cycle in the secondary loop. It is not conducive to core heat extraction and thus affects nuclear safety. The mathematical model of the downcomer was established in this study based on the internal structures of a natural circulation steam generator. The volume-of-fluid (VOF) and large-eddy-simulation (LES) models were used for analysis on FLUENT software (ANSYS, Pittsburgh, PA. USA) platform. The influence of direct contact condensation of top-down flowing steam on the flow properties in the downcomer of the steam generator under high pressure was studied. The trend of the temperature, pressure, and the void fraction were obtained by combining these models with the condensation model. Further, a one-dimensional calculation program based on the differential drop was also developed to assess the flow field in the downcomer. The calculation results are in good agreement with the experimental results which indicated that, when affected by the saturated steam carried downward, the flow temperature close to the exit of the downcomer rises slightly due to the absorption of the heat released by the steam condensation. Furthermore, the density corrected by the pressure-drop is more reliable than that corrected by the temperature. After the velocity in the downcomer has increased to a certain value, the sensitivity of steam quality to the subcooling degree in the downcomer begins to decline. The results in this paper can be used to perform stability analyses and to design steam generators. The results of research are helpful to the stability analysis and the design of a steam generator, and to improve the accuracy of the measurement of the steam generator operating parameters, thus enhancing the safety of Pressurize Water Reactor operating system.
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Dissertations / Theses on the topic "Saturated water steam"

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Saunders, Thomas Philip. "Inactivation Of Salmonella And Surrogate Bacteria On Cashews And Macadamia Nuts Exposed To Saturated Steam And Propylene Oxide Treatments." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/86138.

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Saturated steam (SS) and propylene oxide (PPO) fumigation are two common methods to improve microbiological quality and safety of tree nuts. Validation of these processes is needed to ensure adequate control of bacterial pathogens. Since pathogens cannot be studied in food processing environments, surrogates with resistance comparable to the pathogens needed to be identified. The objective was to investigate the suitability of Enterococcus faecium, Pediococcus acidilactici, and Staphylococcus carnosus as surrogate bacteria for Salmonella spp. on whole cashews and macadamia nuts, processed with SS or PPO. Whole cashews and macadamia nuts were co-inoculated with a cocktail of Salmonella enterica and one of the three potential surrogates. Nuts were dried to original aw, packaged in poly-woven bags (2.3 kg) and commercially processed using vacuum assisted steam at 80 ͦ C or PPO fumigation. Salmonella and the potential surrogates were enumerated by serial dilution, and plated onto TSA with overlay of XLT-4 (Salmonella) or media selective for the potential surrogates. Mean log reductions (CFU/g) of Salmonella and each potential surrogate were compared using a paired T-test. SS results: reduction of Salmonella (6.0 ± 0.14) was significantly larger than E. faecium (4.3± 0.12), or P. acidilactici (3.7± 0.14) on whole cashews. Salmonella (5.9 ± 0.18) was significantly larger than P. acidilactici (4.4± 0.18) on whole macadamia nuts. PPO results: reduction of Salmonella (7.3 ± 0.19) was significantly greater than E. faecium (6.4± 0.31), or P. acidilactici (6.3± 0.33) on whole macadamia nuts. Reduction of Salmonella was significantly greater than E. faecium and P. acidilactici reduction on cashews. P. acidilactici may be considered a surrogate for Salmonella reduction on whole macadamia nuts and whole cashews processed using SS at 80 ͦ C. E. faecium and P. acidilactici may be considered surrogates for Salmonella reduction on whole macadamia nuts and whole cashews processed using PPO. Reduction of St. carnosus exceeded that of Salmonella indicating it is not a suitable surrogate for Salmonella using either processing intervention.
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Pajgrt, Michal. "Programové vybavení pro komunikaci a nastavení jednotky pro sběr dat JSD600." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2007. http://www.nusl.cz/ntk/nusl-412780.

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This diploma thesis describes a JSD600 unit intended for mathematical processing, measuring and data recording. The JSD600 unit is highly intended for industrial measuring of water steam energy delivery.First part of the work focuses on basics of the JSD600 unit detailing and describing main structures and principles for relevant data storing.Next part summarizes some basic facts and knowledge from the area of industrial liquid flow, energy measuring and describes water steam states. All these points within this range are needed for dilemma understanding.Last task deals with complete list of communication datagrams, which have been used for communication with JSD600 unit, including a main packet of structure descriptions.The second part of this dissertation brings the unit setup application description including some implementation details of the most interesting parts.
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Books on the topic "Saturated water steam"

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Parker, Philip M. The 2007-2012 World Outlook for Stationary and Marine Water Tube Steel Saturated Power Boilers of More Than 15 P.s.i. Steam Working Pressure and Maximum ... Per Hour Excluding for Nuclear Applications. ICON Group International, Inc., 2006.

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Parker, Philip M. The 2007-2012 World Outlook for Stationary and Marine Water Tube Steel Saturated Power Boilers of More Than 15 P.s.i. Steam Working Pressure and 100,001 ... or More Excluding for Nuclear Applications. ICON Group International, Inc., 2006.

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The 2006-2011 World Outlook for Stationary and Marine Water Tube Steel Saturated Power Boilers of More Than 15 P.s.i. Steam Working Pressure and 100,001 ... or More Excluding for Nuclear Applications. Icon Group International, Inc., 2005.

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The 2006-2011 World Outlook for Stationary and Marine Water Tube Steel Saturated Power Boilers of More Than 15 P.s.i. Steam Working Pressure and Maximum ... Per Hour Excluding for Nuclear Applications. Icon Group International, Inc., 2005.

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Book chapters on the topic "Saturated water steam"

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Chatterjee, Amrit, and Bijan Kumar Mandal. "A Simplified Approach for the Rapid Evaluation of Thermodynamic Properties of Saturated Water and Steam." In Advances in Mechanical Engineering, 717–27. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0124-1_65.

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Branney, Michael J., and Jan Zalasiewicz. "3. Volcanoes and water." In Volcanoes: A Very Short Introduction, 34–55. Oxford University Press, 2020. http://dx.doi.org/10.1093/actrade/9780199582204.003.0003.

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‘Volcanoes and water’ assesses how water affects the behaviour of volcanoes. When rising hot magma encounters groundwater, as in a water-saturated sandstone, the pore water in the sandstone next to the magma flashes to steam, and the force of the expanding steam within the rock tears the sand grains apart from each other, and streams them away as it escapes. Peperite, ‘phreatic’ (steam) eruptions, phreatomagmatic eruptions, submarine eruptions, emergent Surtseyan eruptions, and ‘phreatoplinian’ eruptions are thought to be the most violent on Earth. Glacial volcanoes, and catastrophic watery ‘lahars’ accompany many eruptions.
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Ansari, M. R. "Experimental Investigation on Wave Initiation and Slugging of Saturated Steam-Water Stratified Flow in Horizontal Duct." In Multiphase Flow 1995, 299–311. Elsevier, 1995. http://dx.doi.org/10.1016/b978-0-444-81811-9.50031-7.

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Warrick, Arthur W. "Saturated Flow." In Soil Water Dynamics. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195126051.003.0008.

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Saturated conditions generally exist below a water table, either as part of the permanent groundwater system (aquifer) or in the vadose zone as perched water. For isotropic and steady-state conditions, such systems can be modeled by Laplace’s equation. Because it is linear, Laplace’s equation is much easier to solve than the variably saturated forms of Richards’ equation and, hence, provides a convenient place to begin. Analyses of water flow for drainage and groundwater systems borrow heavily from the classical (and old!) work in heat conduction, hydrodynamics, and electrostatics. This section presents analytical solutions for subsurface drainage and well discharge in fully penetrating confined aquifers (the solutions are the same). Included are the definition of stream functions and demonstrations of the Cauchy–Riemann relations. A comparable numerical solution is presented, and also for the ponded drainage and well discharge, and the results compared with the analytical solutions. A more complex example is then presented concerning drainage below a curved water table. These results are followed by travel-time calculations relevant to solute movement from the soil surface to a drainage system. A short section covering analytical techniques with three-dimensional images is then given, followed by a section covering additional topics, which includes a complex image example (two dimensional) and some relationships for Fourier series. Consider a point source in a two-dimensional x—y plane, as in figure 3-1. The origin corresponds to a source that is assumed to be an infinite line perpendicular to the x—y plane. If the steady flow rate is Q, then the conservation of mass results in . . . Q = Jr(2πr) (3-1) . . . where Jr is the Darcian flow in the r direction and evaluated at a polar radius r. The dimensions of Q are [L2T-1] corresponding to a volume of flow per unit time from a unit length of the line perpendicular to the x—y plane. Values of Q are taken to be positive for water entering the system.
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Bethke, Craig M. "Acid Drainage." In Geochemical Reaction Modeling. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195094756.003.0027.

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Acid drainage is a persistent environmental problem in many mineralized areas. The problem is especially pronounced in areas that host or have hosted mining activity (e.g., Lind and Hem, 1993), but it also occurs naturally in unmined areas. The acid drainage results from the weathering of sulfide minerals that oxidize to produce hydrogen ions and contribute dissolved metals to solution. These acidic waters are toxic to plant and animal life, including fish and aquatic insects. Streams affected by acid drainage may be rendered nearly lifeless, their stream beds coated with unsightly yellow and red precipitates of oxy-hydroxide minerals. In some cases, the heavy metals in acid drainage threaten water supplies and irrigation projects. Where acid drainage is well developed and extensive, the costs of remediation can be high. In the Summitville, Colorado district (USA), for example, efforts to limit the contamination of fertile irrigated farmlands in the nearby San Luis Valley and protect aquatic life in the Alamosa River will cost an estimated $100 million or more (Plumlee, 1994a). Not all mine drainage, however, is acidic or rich in dissolved metals (e.g., Ficklin et al., 1992; Mayo et al., 1992; Plumlee et al., 1992). Drainage from mining districts in the Colorado Mineral Belt ranges in pH from 1.7 to greater than 8 and contains total metal concentrations ranging from as low as about 0.1 mg/kg to more than 1000 mg/kg. The primary controls on drainage pH and metal content seem to be (1) the exposure of sulfide minerals to weathering, (2) the availability of atmospheric oxygen, and (3) the ability of nonsulfide minerals to buffer acidity. In this chapter we construct geochemical models to consider how the availability of oxygen and the buffering of host rocks affect the pH and composition of acid drainage. We then look at processes that can attenuate the dissolved metal content of drainage waters. Acid drainage results from the reaction of sulfide minerals with oxygen in the presence of water. As we show in this section, water in the absence of a supply of oxygen gas becomes saturated with respect to a sulfide mineral after only a small amount of the mineral has dissolved.
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Conference papers on the topic "Saturated water steam"

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Philip, Jacob, Faruk Kazi, and Harivittal Manglvedekar. "Quasi Steady State, Quasi Numerical Modeling of Saturated Steam-Water Spaces Using Normalized Steam and Water Properties for Efficient Computing." In 2014 5th International Conference on Intelligent Systems, Modelling and Simulation (ISMS). IEEE, 2014. http://dx.doi.org/10.1109/isms.2014.121.

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Schultz, Richard R., Hiral J. Kadakia, Jim C. P. Liou, and Brian G. Williams. "Saturated-Subcooled Stratified Flow in Horizontal Pipes." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30975.

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Advanced light water reactor systems are designed to use passive emergency core cooling systems with horizontal pipes that provide highly subcooled water from water storage tanks or passive heat exchangers to the reactor vessel core under accident conditions. Because passive systems are driven by density gradients, the horizontal pipes often do not flow full and thus have a free surface that is exposed to saturated steam and stratified flow is present. The subcooled water flows into the reactor vessel via the downcomer—which is an annular region separated from the core by a cylindrical, steel, inner liner. Under accident conditions, where the horizontal pipes are only partially full, both saturated water and saturated steam from the downcomer are likely to be present in the pipe. The saturated water is quasi-static and the fraction of the free surface that is saturated water is dictated by the physics of the flow. The saturated steam is usually flowing in the countercurrent direction to the subcooled water. Consequently the flow may be a three-layered system with saturated steam over a static saturated liquid layer over a flowing subcooled layer. The conditions leading to a saturated liquid layer that separates the saturated steam from flowing subcooled water are explored. The variables that influence the formation of the saturated liquid layer and enable the saturated layer to be maintained for a spectrum of conditions, including steam flow in the countercurrent direction to the subcooled water, are derived, and compared to experimental data. Conclusions regarding this type of flow are given. Finally, typical steam flow velocities that may induce wave-bridging, leading to condensation-induced-water hammer, are identified.
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Jo, Jong Chull, Jae Jun Jeong, Byong Jo Yun, and Frederick J. Moody. "Numerical Simulation of a Highly Compressed Saturated Water Flashing Flow." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65143.

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Transient fluid velocity and pressure fields in a pressurized water reactor (PWR) steam generator (SG) secondary side during the blowdown period of a feedwater line break (FWLB) accident were numerically simulated employing the saturated liquid flashing model. This model is based on the assumption that compressed water in the SG is saturated at the beginning and decompresses into the two-phase region where saturated vapor forms, creating a mixture of steam bubbles in liquid by bulk boiling. The numerical calculations were performed for two cases where the outflow boundary condition is different from each other; one is specified as the direct blowdown discharge to atmospheric pressure and the other is specified as the blowdown discharge to an extended calculation domain with atmospheric pressure on its boundary. To effectively simulate the saturated water flashing from the SG following the FWLB accident, the physical SG model was simplified as a vertical once-through SG to which a feedwater pipe is attached. However, the physical geometry of the analysis model was modeled as realistically as possible in terms of the SG tube bundle height, the SG inner diameter and porosity, the inner diameter and length of broken feedwater pipe part, etc. It was considered that the SG shell-side and the attached feedwater pipe were initially filled with high pressure saturated water. The pressure in the steam space was 7.5 MPa. For the calculation of the two-phase flow during high pressure saturated water flashing from the SG through the broken feedwater pipe, the inhomogeneous two-fluid model was used. The present simulation results were discussed through a comparison with the predictions using a simple non-flashing model neglecting the effects of phase change. Based on the comparative discussions, the applicability of each of the non-flashing liquid discharge and saturated liquid flashing discharge models to the confirmatory safety evaluations of new SG designs was examined.
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Philip, Jacob, Harivittal Manglvedekar, and Faruk Kazi. "Modeling of Coupled Saturated Steam-Water Spaces Using Quasi-steady State, Quasi-numerical Approach." In 2014 5th International Conference on Intelligent Systems, Modelling and Simulation (ISMS). IEEE, 2014. http://dx.doi.org/10.1109/isms.2014.87.

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Koga, Tatsuya, Tomoji Takamasa, Tatsuya Hazuku, Norihiro Fukamachi, Akira Saito, and Izuo Aya. "Flashing Hammer Phenomenon in Rapid Liquid-Liquid Contact." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45277.

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In a wall crack accident or loss-of-coolant accident (LOCA) in an advanced reactor with water filled containment, high pressure saturated water is discharged from the pressure vessel into the low-pressure, low-temperature water of the containment. The discharged saturated water causes flashing and generates steam. Steam is then condensed by the water in the containment. This paper describes our study of high pressure saturated water that rapidly contacts low-pressure, low-temperature water. The purpose of the study was to clarify the transient phenomena that occur when high pressure saturated water blows down from a pressure vessel into a water filled containment during a wall crack accident or LOCA in an advanced reactor. The experimental results revealed that flashing of high-pressure saturated water and a subsequent water hammer occurred under the specified experimental settings. Pressure peaked when steam generation or flashing occurred at the wall surface and the flashing steam condensed. After the peak, pressure oscillated and reached equilibrium condition in a short time. The pressure oscillation might have been caused by a balancing action between the flashing of high pressure saturated water and condensation of the steam generated by flashing in low-pressure, low-temperature water. To check the results of the experiments, numerical analyses were conducted. The numerical results cleared the mechanism behind flashing hammer phenomenon.
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Dong, Zhe. "Saturated output feedback high-gain control for the water-level of U-tube steam generators." In 2012 10th World Congress on Intelligent Control and Automation (WCICA 2012). IEEE, 2012. http://dx.doi.org/10.1109/wcica.2012.6359031.

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Musakaev, N. G., and S. L. Borodin. "Numerical research of the hot steam-water mixture injection process into an oil-saturated reservoir." In INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH (ICMAR 2020). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0052043.

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Ali, Majid, Changqi Yan, Haifeng Gu, Khurram Mehboob, and Athar Rasool. "Removal Efficiency of Iodine at Saturated Steam in Submerged Venturi Scrubber." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30544.

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Sever accident due to molten core of Nuclear Power Plant causes the production of steam which carries the radioactive iodine. It is important to retain the radioactive iodine from contaminated gas and steam before it is released into the environment. The purpose of this research is to investigate the removal efficiency of iodine in a submerged venturi scrubber for saturated steam at 100°C. Venturi Scrubber is submerged in a venturi tank filled with liquid which is alkaline by adding sodium hydroxide (NaOH) and sodium thiosulphate (Na2S2O3) in scrubbing water. Saturated Steam of 100 °C is injected into an experimental loop. Iodine removal efficiency is investigated for saturated steam at various compressed gas flow rate 330, 420, and 510 kg/s. Inlet and outlet concentration are measured at the sampling points of an experimental loop to calculate the iodine removal efficiency. The maximum removal efficiency of 99.4% is achieved at gas mass flow rate of 510 kg/s.
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Bingbin, Ying, Li Xilin, Zhang Feixi, and Lin Shaoxuan. "The Hot Test of Primary Separation Equipment of Steam Generator for CAP1400 Nuclear Power Plant." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-66198.

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A new type of Steam separator for CAP1400 Steam Generator is introduced. The result of characteristic experiment, the variables of which contain steam load, saturated water flow and water level, shows its separation characteristics are suitable for CAP1400 Steam Generator. Steam generator is a major equipment of pressurized water reactor power plant, one function of which is to transfer heat from reactor to feedwater and to generate qualified steam. Steam separator, located in upper shell of Steam generator, is used to separate steam from saturated water/steam mixture which exits from the tube bundle region. Steam separating process usually consists of three stages. Centrifugal separation first happens in Primary separator, where most of water is separated. Gravity separation is achieved in the space formed between Primary separator and the dryer. Finally, as the relatively low moisture content mixture flows through the chevron-type dryer, the qualified steam is obtained. The new developed primary separator, named SP3 type, consist of raise cylinder, swirl impeller, downcomer and vane. As the steam/water mixture enters the primary separator, a centrifugal force is induced by the swirl. Thus the greater dense water in the steam-water mixture is forced toward the outside diameter of the separator, while the less dense steam stays in the central portion of the separator. The separated water leaved the separator through the downcomer. Relatively high quality steam exits the separator, passing upward through the center of raise cylinder. The paper introduced the SP3 primary separator developed by hot test, which includes test device, device design, test method, and result analysis. Separation characteristics of SP3 primary separator are obtained by various tests. The result of varying steam load test shows the outlet moisture is 13.3% under the condition of 100% steam load and 4.3 recirculation ration. The result of varying saturated water flow test shows the outlet moisture increases as the saturated mixture flow rate increases. The outlet moisture increased slowly as saturated water flow rate increases when steam load is at 50% and 100%, while the outlet moisture increases fast when steam load reaches at 120%. The result of varying water level test shows the water level is not a major factor for the SP3 primary separator performance. By analyzing experimental data, a fitting formula of the primary separator performance is obtained. the steam flow rate is the most sensitive parameter affecting primary separator performance in that formula. The water flow is the subordinate parameter for the primary separator performance. the resistance characteristics of separator is also obtained, which supports the research and development of the CAP1400 steam generator..
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Zhao, Fulong, Qianfeng Liu, Chenru Zhao, Hanliang Bo, Ying Liu, and Ya Zhou. "Stokes Number Analysis of the Moving Droplets in the Steam-Water Separator." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81299.

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The steam-water separator is vitally important equipment to remove the droplets entrained by the vapor stream to provide dry saturated steam for the steam turbine in the nuclear power station. With the development of the large nuclear power station and the vessel nuclear power plant, the steam-water separation performance should be more efficient under the condition of higher pressure, power load and circulating ratio. The droplet motion model, which is solved by typical four steps Runge-Kutta method and validated against the experimental results, is developed according to the physical phenomenon description and the mechanism comprehension of the vapor entrained droplets moving in the wave-type vanes separator. The Euler-Lagrange methodology is adopted to simulate the moving droplet entrained by the vapor stream in the wave-type vanes separator and the separation performance is investigated. The separation efficiency of the separator and motion trajectories of droplets with various sizes are presented. Stokes Number (St) of diverse droplets is obtained to analyze the influence of Stokes Number on the moving droplets trajectories and the separation efficiency. The results reveal that the values of Stokes Number for most of the moving droplets in the wave-type vanes separator are beyond 1, which indicates that most of droplets are likely to collide with the solid wall of the separator. Only when the droplet velocity is smaller than 1 m/s or the droplet radius is less than 2 μm, the Stokes Number may be below 1 and the moving droplets can be entrained by the stream flow until escaping from the separator. The analysis can forecast the maximum critical separation size of the droplets that cannot be removed, and the minimum critical separation size of the droplets that can be removed throughly by the separator and guide the design of the separator.
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