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Littérature scientifique sur le sujet « Energy stratification »

Auteur : Grafiati

Publié le 2 juin 2025

Mis à jour le 31 juillet 2025

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Articles de revues sur le sujet "Energy stratification"

Hall, Rob A., John M. Huthnance, and Richard G. Williams. "Internal Wave Reflection on Shelf Slopes with Depth-Varying Stratification." Journal of Physical Oceanography 43, no. 2 (2013): 248–58. http://dx.doi.org/10.1175/jpo-d-11-0192.1.

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Abstract Reflection of internal waves from sloping topography is simple to predict for uniform stratification and linear slope gradients. However, depth-varying stratification presents the complication that regions of the slope may be subcritical and other regions supercritical. Here, a numerical model is used to simulate a mode-1, M2 internal tide approaching a shelf slope with both uniform and depth-varying stratifications. The fractions of incident internal wave energy reflected back offshore and transmitted onto the shelf are diagnosed by calculating the energy flux at the base of slope (w

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Guo, Dong-Peng, Peng Zhao, Ren-Tai Yao, Yun-Peng Li, Ji-Min Hu, and Dan Fan. "Numerical and Wind Tunnel Simulation Studies of the Flow Field and Pollutant Diffusion around a Building under Neutral and Stable Atmospheric Stratifications." Journal of Applied Meteorology and Climatology 58, no. 11 (2019): 2405–20. http://dx.doi.org/10.1175/jamc-d-19-0045.1.

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AbstractIn this paper, the k–ε renormalization group (RNG) turbulence model is used to simulate the flow and dispersion of pollutants emitted from a source at the top of a cubic building under neutral and stable atmospheric stratifications, the results of which were compared with corresponding wind tunnel experiment results. When atmosphere stratification is stable, the separation zones on the sides and at the top of a building are relatively smaller than those under neutral conditions, and the effect of the building in the horizontal direction is stronger than that in the vertical direction.

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Rong, R. X., and G. J. Lyman. "A new energy dissipation theory of jig bed stratification. Part 2: a key energy parameter determining bed stratification." International Journal of Mineral Processing 37, no. 3-4 (1993): 189–207. http://dx.doi.org/10.1016/0301-7516(93)90026-7.

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Wang, Xinwei, Longbin Duan, Genying Gao, et al. "Analysis and Optimization of Thermal Storage Performance of Thermocline Storage Tank with Different Water Distribution Structures." Processes 13, no. 3 (2025): 629. https://doi.org/10.3390/pr13030629.

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Energy storage is essential for solar energy utilization, and thermocline storage tanks are commonly used. To improve temperature stratification and storage efficiency, we investigated the effect of different water distributor configurations on tank stratification. We numerically analyzed the heat storage processes in hot water tanks with three water distribution configurations: star, antenna, and octagonal. Temperature stratification was evaluated based on thermocline thickness and storage efficiency. Thermal storage efficiency improves by 0.45% when the outlet direction of the water distribu

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Hopper, George M., David J. Parrish, and David Wm Smith. "Adenylate energy charge during stratification and germination of Quercusrubra." Canadian Journal of Forest Research 15, no. 5 (1985): 829–32. http://dx.doi.org/10.1139/x85-134.

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In an effort to better understand dormancy in Quercusrubra, adenylate energy charge was measured during stratification and germination. Adenylate energy charge has been suggested as a useful index of metabolic activity and seed vigor. Adenylate nucleotides were measured using the luciferin–luciferase assay. Energy charge was compared with germinability at 28 days. Energy charge increased during the first 2 weeks of stratification when germination was low. Thereafter, energy charge decreased before increasing at 8 weeks of stratification. This second rise in energy charge coincided with increas

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Sargentis, G. Fivos, Theano Iliopoulou, Panayiotis Dimitriadis, Nikolaos Mamassis, and Demetris Koutsoyiannis. "Stratification: An Entropic View of Society’s Structure." World 2, no. 2 (2021): 153–74. http://dx.doi.org/10.3390/world2020011.

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In human societies, we observe a wide range of types of stratification, i.e., in terms of financial class, political power, level of education, sanctity, and military force. In financial, political, and social sciences, stratification is one of the most important issues and tools as the Lorenz Curve and the Gini Coefficient have been developed to describe some of its aspects. Stratification is greatly dependent on the access of people to wealth. By “wealth”, we mean the quantified prosperity which increases the life expectancy of people. Prosperity is also connected to the water-food-energy ne

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Zhang, Zheen, Xueen Chen, and Thomas Pohlmann. "The Impact of Fortnightly Stratification Variability on the Generation of Baroclinic Tides in the Luzon Strait." Journal of Marine Science and Engineering 9, no. 7 (2021): 703. http://dx.doi.org/10.3390/jmse9070703.

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The impact of fortnightly stratification variability induced by tide–topography interaction on the generation of baroclinic tides in the Luzon Strait is numerically investigated using the MIT general circulation model. The simulation shows that advection of buoyancy by baroclinic flows results in daily oscillations and a fortnightly variability in the stratification at the main generation site of internal tides. As the stratification for the whole Luzon Strait is periodically redistributed by these flows, the energy analysis indicates that the fortnightly stratification variability can signifi

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Arnqvist, Johan, Hugo Olivares-Espinosa, and Ingemar Carlén. "Wind energy relevant characteristics of turbulence over boreal forests." Journal of Physics: Conference Series 2767, no. 9 (2024): 092096. http://dx.doi.org/10.1088/1742-6596/2767/9/092096.

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Abstract Turbulence statistics from three tall meteorological masts and LES in forested landscapes are compared to standard turbulence models used for wind turbine design. The comparison is split into different atmospheric conditions to highlight the impact of stratification on the character of turbulence. The aim of the work is to clarify to which extent standard turbulence models are accurate over forested regions. To this end, different spectral measures such as power spectra and coherence are examined as well as vertical profiles of turbulence characteristics relevant to the design and sit

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Nagamalleswara Rao, Gujjar. "Comparison of Experimental and Simulation Studies on Thermal Stratification in a Thermal Energy Storage System." Journal of Advanced Research in Mechanical Engineering and Technology 05, no. 1&2 (2018): 17–24. http://dx.doi.org/10.24321/2454.8650.201802.

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Rosengarten, G., G. Morrison, and M. Behnia. "A Second Law Approach to Characterising Thermally Stratified Hot Water Storage With Application to Solar Water Heaters." Journal of Solar Energy Engineering 121, no. 4 (1999): 194–200. http://dx.doi.org/10.1115/1.2888166.

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This paper presents a method of characterising and evaluating the performance of hot water storage systems in terms of their temperature distribution. The change in exergy from the stratified state to the delivery state depends on the stored energy and the stratification. It can thus he used to define the storage efficiency for sensible heat storage devices. A new parameter that isolates the stratification component of the exergy is defined and called the stratification efficiency. The effect of temperature distribution, delivery temperature and tank cross-section on exergy and stratification

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Thèses sur le sujet "Energy stratification"

Lawrie, Andrew. "Rayleigh-Taylor mixing : confinement by stratification and geometry." Thesis, University of Cambridge, 2010. https://www.repository.cam.ac.uk/handle/1810/225125.

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Rayleigh-Taylor instability has been an area of active research in fluid dynamics for the last twenty years, but relatively little attention has been paid to the dynamics of problems where Rayleigh-Taylor instability plays a role, but is only one component of a more complex system. Here, Rayleigh-Taylor instability between miscible fluids is examined in situations where it is confined by various means: by geometric restriction, by penetration into a stable linear stratification, and by impingement on a stable density interface. Water-based experiments are modelled using a variety of techniques

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Smyth, Mervyn A. "Design and development of a heat retaining integrated collection/storage solar water heater." Thesis, University of Ulster, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264693.

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Rodney, J. T. "The effects of stratification and coastline geometry on the geographical localisation of shelf wave energy." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1349172/.

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Variations in shelf geometry mean that a coastal-trapped wave (CTW) mode can propagate within some finite length of shelf but be evanescent outside these regions. These disturbances will be denoted here as localised coastal-trapped waves (ℓCTWs). The subsequent motions produced by such localised variations in shelf geometry, i.e. wave propagation, wave trapping and eddy generation, are discussed in both the coastal-trapped wave (baroclinic) and continental shelf wave (barotropic) limits. Firstly, localised continental shelf waves (ℓCSWs) trapped by local variations in coastline curvature, shel

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Pentagna, Robert Pasquale Paulo [UNESP]. "Modelo matemático para análise de problemas de estocagem de líquidos que apresentam estratificação térmica." Universidade Estadual Paulista (UNESP), 2004. http://hdl.handle.net/11449/90813.

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Made available in DSpace on 2014-06-11T19:24:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2004-08-22Bitstream added on 2014-06-13T20:47:19Z : No. of bitstreams: 1 pentagna_rpp_me_bauru_prot.pdf: 1054031 bytes, checksum: c2f515f7ab29cf3aa3f199133c8d8d15 (MD5) outros - empresas Foi desenvolvido um modelo matemático para descrever o processo de estocagem de energia via estratificação térmica de líquido em um tanque. Neste modelo foi considerado um balanço de energia para o sistema de estocagem e proposto um modelo matemático unidimensional e transiente capaz de descrever o históri

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Armstrong, Peter Michael. "Enhancing the energy storage capability of electric domestic hot water tanks." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:af140a2c-aab4-4fc9-8709-6f9474079cd5.

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Electric hot water tanks play a pivotal role as demand response assets within the UK's energy system by storing heat when energy is inexpensive and delivering domestic hot water when it is required. This role will become increasingly important if non-dispatchable renewable energy sources are to play a bigger part in the energy mix. Historically, the design standards relating to hot water tanks have focused primarily on minimising heat losses. However, in addition to preserving energy, a hot water tank should preserve the availability of heat above a useful temperature for as long as possible t

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Nyberg, Roland. "The Inclusion of Stratification in Wind Analysis; A New Linearized Code." Thesis, KTH, Strömningsmekanik och Teknisk Akustik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-289627.

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Wind energy is rapidly growing around the world as non-renewable energy sources are being phased out. To maximize the energy production, it is crucial to construct new wind turbines at locations where the average wind speed is high. An accurate wind assessment of a new potential site is thus essential in the development of new wind farms. Linearized codes (codes based on simplified models) such as Orfeus and WAsP have seen frequent use in the wind industry as a tool for wind resource assessment since they offer reasonable accuracy at a relatively low computational cost. A major issue with the

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Pentagna, Robert Pasquale Paulo. "Modelo matemático para análise de problemas de estocagem de líquidos que apresentam estratificação térmica /." Bauru : [s.n.], 2004. http://hdl.handle.net/11449/90813.

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Orientador: Alcides Padilha Banca: Ricardo Fortes de Miranda Banca: Vicente Luiz Scalon Resumo: Foi desenvolvido um modelo matemático para descrever o processo de estocagem de energia via estratificação térmica de líquido em um tanque. Neste modelo foi considerado um balanço de energia para o sistema de estocagem e proposto um modelo matemático unidimensional e transiente capaz de descrever o histórico dos perfis de temperatura do líquido e da parede do reservatório durante a operação de carregamento dinâmico. O modelo matemático foi discretizado através da técnica de diferença finita

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Adua, Lazarus. "The Salience of Stratification, Lifestyle and Residential Energy Efficiency Improvement in the Climate Change Discourse and Policy: Implications for Environmental Justice." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1243888108.

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Kayserilioglu, Yavuz Selim. "Heat Removal From A Large Scale Warm Water Storage." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605359/index.pdf.

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ABSTRACT HEAT REMOVAL FROM A LARGE SCALE WARM WATER STORAGE Kayserilioglu, Yavuz Selim M.S., Department of Mechanical Engineering Supervisor: Prof. Dr. R&uuml knettin Oskay August 2004, 88 Pages A preliminary experimental study was performed in order to investigate the charging and heat removal characteristics of a sensible heat storage. Two sets of experiments were performed at two aspect ratios. Heat removal processes of these two sets were different while the charging processes were similar. In the first set of experiments, after the charging of the storage unit with relatively warm w

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Santos, Guilherme Henrique Sempionato Souza. "Análise numérica de um sistema integrado coletor solar/armazenador térmico /." Bauru : [s.l.], 2007. http://hdl.handle.net/11449/136670.

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Orientador: Alcides Padilha Banca: Vicente Luiz Scalon Banca: Ricardo Fortes de Miranda Resumo: Este estudo apresenta uma análise numérica dos campos de temperaturas e velocidades d'água durante seu processo de aquecimento via calor sensível no interior de um armazenador térmico cilíndrico, aquecido lateralmente e adiabático em seu topo e base, visando o estudo da condição de operação de um aquecedor de água coletor solar-armazenador integrados (ICSSWH - Integrated Collector-Storage Water Heater). Em uma segunda análise a influência de um defletor interno é estudada pela definição dos

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Livres sur le sujet "Energy stratification"

Basil, Nicolaenko, Chou Yeh, and Langley Research Center, eds. Energy spectra of strongly stratified and rotating turbulence. National Aeronautics and Space Administration, Langley Research Center, 1998.

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Basil, Nicolaenko, Zhou Ye, and Langley Research Center, eds. Energy spectra of strongly stratified and rotating turbulence. National Aeronautics and Space Administration, Langley Research Center, 1998.

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De Vita, Maurizio, ed. Città storica e sostenibilità / Historic Cities and Sustainability. Firenze University Press, 2012. http://dx.doi.org/10.36253/978-88-6655-305-2.

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A subject that is inexplicably little studied at present, or indeed not at all, is that of the quest for possible applications and feasible objectives in the energy requalification of existing buildings, existing or planned open spaces, old city centres and the monumental and diffuse cultural heritage. At the present time it is crucial that the issues, research and techniques linked to the possibilities of an aware use of energy are applied to the old city centres and the existing heritage. This must start from a knowledge and investigation of the traditional building materials and techniques,

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Marais, Lochner, Phillippe Burger, Maléne Campbell, Stuart Paul Denoon-Stevens, and Deidré van Rooyen, eds. Coal and Energy in South Africa. Edinburgh University Press, 2021. http://dx.doi.org/10.3366/edinburgh/9781474487054.001.0001.

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This book forms part of a larger research project at the University of the Free State (UFS) in South Africa that is investigating the consequences of mining for local communities and mining towns. The book analyses the current situation in Emalahleni and considers the likelihood of a just transition across a range of fields. The case study of the mining city of Emalahleni (‘place of coal’) in South Africa, formerly Witbank, both exemplifies and illuminates how the energy scenario plays out in one major mining city and in turn casts light on that scenario. The authors did not understand the ine

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Jahanbegloo, Ramin, and Dipankar Gupta. Talking Sociology. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199489374.001.0001.

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A well-known name in contemporary sociology, Dipankar Gupta’s wide range of scholarship and popular columns have justly earned him the reputation of being one of India’s leading public intellectuals. Talking Sociology provides a complete panorama of Gupta’s life and works and his contribution to Indian sociology. In this book of conversations, he shares insights into the key areas of Indian sociology, such as the problem of social stratification, citizenship and democracy, and the caste system and ethnic groups in India. In his view, once we understand the discrete nature of caste identity we

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Chapitres de livres sur le sujet "Energy stratification"

Hahne, E., R. Kübler, and J. Kallweit. "The Evaluation of Thermal Stratification by Exergy." In Energy Storage Systems. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2350-8_20.

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Scurlock, Ralph G. "Factors Creating Stratification: Management of LNG Rollover." In SpringerBriefs in Energy. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-20696-7_6.

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Lovejoy, S., and D. Schertzer. "Scaling Turbulent Atmospheric Stratification: A Turbulence/Wave Wind Model." In Wind Energy. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-33866-6_24.

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Scurlock, Ralph G. "The Rollover Sequence of Events, Starting with Stratification." In SpringerBriefs in Energy. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-20696-7_5.

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Sifnaios, Ioannis, Adam R. Jensen, Simon Furbo, and Jianhua Fan. "Evaluation of Stratification in Thermal Energy Storages." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4360-7_6.

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Hahne, E., R. Kübler, and J. Kallweit. "Convection Effects on Stratification During Charging of a Hot Water Store." In Energy Storage Systems. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2350-8_19.

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Kota, Sampath Bharadwaj, Seik Mansoor Ali, and Sreenivas Jayanti. "Thermal Stratification Characteristics in a Reduced Scale Toroidal Suppression Pool." In Green Energy and Technology. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2279-6_34.

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Anacreonte, A. V., M. Musto, N. Bianco, R. Vitobello, and R. Russo. "Experimental Analysis and Numerical Optimization of the Stratification Efficiency in a Commercial Stratified Thermal Storage." In Springer Proceedings in Energy. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-48902-0_28.

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Naga Malleswara Rao, Gujjar, and Shaik Chand Mabhu Subhani. "Simulation of Heat Stratification in Thermal Energy Storage Tank Using Fluent." In Recent Advances in Mechanical Engineering, Volume 2. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-2249-5_23.

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Kalra, Jasmeet, Rajesh Pant, Pankaj Negi, Vijay kumar, Shivani Pant, and Sandeep Tiwari. "Design Optimization of Solar Thermal Energy Storage Tank: Using the Stratification Coefficient." In Lecture Notes in Electrical Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2354-7_5.

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Actes de conférences sur le sujet "Energy stratification"

Zong, Yi, Jingkuan Zhang, and Binbin Gao. "Research on Supermarket Customer Stratification Based on Improved RFMP Model and Integrated Learning." In 2025 IEEE International Conference on Electronics, Energy Systems and Power Engineering (EESPE). IEEE, 2025. https://doi.org/10.1109/eespe63401.2025.10987045.

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Licata, Anthony J., Louis A. Terracciano, Robert W. Herbert, and Ulrich Kaiser. "Design Features for Superheater Corrosion Control in Municipal Waste Combustors." In CORROSION 1989. NACE International, 1989. https://doi.org/10.5006/c1989-89205.

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Abstract Boiler tube design for waste-to-energy applications has greatly evolved over the past 10 years with primary emphasis on reducing the very severe erosion/ corrosion of superheater tubes. Erosion is primarily caused by large solid particles in the flue gas stream, impacting against superheater surfaces. Another cause of superheater tube erosion is air and steam jet sootblowing which cuts the tubes by impingement against them. Corrosion of superheater tubes caused by the presence of chlorides at high tube metal temperatures as well as by localized reducing environments is discussed with

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Soucek, Mark D., Elif Alyamac, and Hua Gu. "Self-Stratified Coatings." In SSPC 2013 Greencoat. SSPC, 2013. https://doi.org/10.5006/s2013-00066.

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Abstract A homogeneous mixture of two immiscible polymeric binders were dissolved in a common solvent or a mixture of solvents was applied as a thin film. The first polymeric binder was a bisphenol-A (BPA) based epoxide, epoxide modified with tetraethoxysilane (TEOS) oligomer, or phosphated epoxide. The second polymeric binder was a fluorinated acrylic copolymer. The mixture was coated on steel substrates via spray and slow casting techniques and then was thermally crosslinked using a methylated melamine formaldehyde and a polyamide curing agents. During the film formation process, a self-stra

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David, A., and G. P. Carson. "Stratification of Bank Energy Loans." In SPE Hydrocarbon Economics and Evaluation Symposium. Society of Petroleum Engineers, 1987. http://dx.doi.org/10.2118/16304-ms.

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ADJIRI, Salima, and Hafida DAAOU-NEDJARI. "Wind wake analysis under thermal stratification conditions." In 2023 14th International Renewable Energy Congress (IREC). IEEE, 2023. http://dx.doi.org/10.1109/irec59750.2023.10389183.

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Castell, A., C. Sole´, M. Medrano, M. Nogue´s, and L. F. Cabeza. "Comparison of Stratification in a Water Tank and a PCM-Water Tank." In ASME 2007 Energy Sustainability Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/es2007-36074.

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Most of the storage systems available on the market use water as storage medium. Enhancing the storage performance is necessary to increase the performance of most systems. The stratification phenomenon is employed to improve the efficiency of storage tanks. Heat at an intermediate temperature, not high enough to heat up the top layer, can still be used to heat the lower, colder layers. There are a lot of parameters to study the stratification in a water tank such as the Mix Number and the Richardson Number among others. The idea studied here was to use these stratification parameters to compa

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Altuntop, Necdet, Veysel Ozceyhan, Yusuf Tekin, and Sibel Gunes. "The Effect of Obstacle Geometry and Position on Thermal Stratification in Solar Hot Water Storage Tanks." In ASME 2008 Heat Transfer Summer Conference collocated with the Fluids Engineering, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/ht2008-56040.

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In this study the effect of obstacle geometry and its position on thermal stratification in solar powered domestic hot water storage tanks are numerically investigated. The goal of this study is to obtain higher thermal stratification and supply hot water for usage as long as possible. The temperature distributions are presented for three different obstacle geometries (1, 2 and 3) and six different distances (f = 0.3, 0.4, 0.5, 0.6, 0.7 and 0.8 mm) from the bottom of the hot water storage tank. The numerical method is validated using both experimental and numerical results available in the lit

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Kannberg, L. D., and L. W. Vail. "Effects of Stratification on Thermal Energy Storage in Aquifers." In 22nd Intersociety Energy Conversion Engineering Conference. American Institute of Aeronautics and Astronautics, 1987. http://dx.doi.org/10.2514/6.1987-9304.

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Battaglia, Mattia, and Michel Haller. "Stratification in Large Thermal Storage Tanks." In ISES EuroSun 2018 Conference – 12th International Conference on Solar Energy for Buildings and Industry. International Solar Energy Society, 2018. http://dx.doi.org/10.18086/eurosun2018.13.03.

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Khan, Fahad, and Brian J. Savilonis. "Thermal Stratification in Spherical Tanks." In ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/es2014-6429.

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Spherical tanks have the potential for cost reduction in sensible thermal energy storage (TES) systems, by using less tank building material and insulation. The current CFD study compares the Thermal Efficiency (TE) of a thermocline storage system in a spherical tank to a cylindrical tank of the same volume. A parametric study is then performed on a spherical tank during the discharge process to determine the flow parameters that govern the thermocline formation and entrainment. The following parameters are used: tank diameter to inlet diameter ratio D/d = 10, inlet velocity (0.02–0.1 m/s), an

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Rapports d'organisations sur le sujet "Energy stratification"

Harter, Rachel M., Pinliang (Patrick) Chen, Joseph P. McMichael, Edgardo S. Cureg, Samson A. Adeshiyan, and Katherine B. Morton. Constructing Strata of Primary Sampling Units for the Residential Energy Consumption Survey. RTI Press, 2017. http://dx.doi.org/10.3768/rtipress.2017.op.0041.1705.

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The 2015 Residential Energy Consumption Survey design called for stratification of primary sampling units to improve estimation. Two methods of defining strata from multiple stratification variables were proposed, leading to this investigation. All stratification methods use stratification variables available for the entire frame. We reviewed textbook guidance on the general principles and desirable properties of stratification variables and the assumptions on which the two methods were based. Using principal components combined with cluster analysis on the stratification variables to define s

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