Relevant bibliographies by topics / Emissivitet

Contents

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

Academic literature on the topic 'Emissivitet'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Emissivitet"

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Langsdale, Mary F., Thomas P. F. Dowling, Martin Wooster, et al. "Inter-Comparison of Field- and Laboratory-Derived Surface Emissivities of Natural and Manmade Materials in Support of Land Surface Temperature (LST) Remote Sensing." Remote Sensing 12, no. 24 (2020): 4127. http://dx.doi.org/10.3390/rs12244127.

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Correct specification of a target’s longwave infrared (LWIR) surface emissivity has been identified as one of the greatest sources of uncertainty in the remote sensing of land surface temperature (LST). Field and laboratory emissivity measurements are essential for improving and validating LST retrievals, but there are differing approaches to making such measurements and the conditions that they are made under can affect their performance. To better understand these impacts we made measurements of fourteen manmade and natural samples under different environmental conditions, both in situ and i
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Prigent, Catherine, Filipe Aires, and William B. Rossow. "Land Surface Microwave Emissivities over the Globe for a Decade." Bulletin of the American Meteorological Society 87, no. 11 (2006): 1573–84. http://dx.doi.org/10.1175/bams-87-11-1573.

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Microwave land surface emissivities have been calculated over the globe for ~10 yr between 19 and 85 GHz at 53° incidence angle for both orthogonal polarizations, using satellite observations from the Special Sensor Microwave Imager (SSM/I). Ancillary data (IR satellite observations and meteorological reanalysis) help remove the contribution from the atmosphere, clouds, and rain from the measured satellite signal and separate surface temperature from emissivity variations. The method to calculate the emissivity is general and can be applied to other sensors. The monthly mean emissivities are a
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Yoshida, Masashi, Noah Utsumi, Ryuta Ichiki, Jung Hyun Kong, and Masahiro Okumiya. "Surface Structure and Emissivity of Aluminum Nitride Films." Advanced Materials Research 1110 (June 2015): 163–68. http://dx.doi.org/10.4028/www.scientific.net/amr.1110.163.

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In this study, aluminum nitride films were formed on aluminum substrates by gas nitriding in order to improve their low emissivities. To accomplish this, aluminum alloys were subjected to nitriding conditions at 773 and 823 K for 0–5 h, using alumina and magnesium powders. The resulting aluminum nitride films were several micrometers thick and the films were dark brown or black. The surface structures of the aluminum nitride films were investigated using a scanning electron microscope, which showed fine acicular aluminum nitride nodules with diameters on the order of several micrometers. Emiss
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Harlow, R. Chawn. "Airborne Retrievals of Snow Microwave Emissivity at AMSU Frequencies Using ARTS/SCEM-UA." Journal of Applied Meteorology and Climatology 46, no. 1 (2007): 23–35. http://dx.doi.org/10.1175/jam2440.1.

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Abstract The remote sounding, by satellite, of atmospheric temperature and humidity is an important source of data for assimilation into operational weather forecasting routines. For retrievals of these variables near the surface, wavebands with low optical depths are monitored to allow penetration through the overlying atmosphere. Brightness temperatures in these relatively transparent bands are also sensitive to the land surface emissivity and effective temperature. Inadequate understanding of these land surface emissivities is a major issue when assimilating Advanced Microwave Sounding Unit
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Jin, Menglin, and Shunlin Liang. "An Improved Land Surface Emissivity Parameter for Land Surface Models Using Global Remote Sensing Observations." Journal of Climate 19, no. 12 (2006): 2867–81. http://dx.doi.org/10.1175/jcli3720.1.

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Abstract Because land surface emissivity (ɛ) has not been reliably measured, global climate model (GCM) land surface schemes conventionally set this parameter as simply constant, for example, 1 as in the National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Prediction (NCEP) model, and 0.96 for bare soil as in the National Center for Atmospheric Research (NCAR) Community Land Model version 2 (CLM2). This is the so-called constant-emissivity assumption. Accurate broadband emissivity data are needed as model inputs to better simulate the land surface climate.
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Norouzi, H., M. Temimi, W. B. Rossow, C. Pearl, M. Azarderakhsh, and R. Khanbilvardi. "The sensitivity of land emissivity estimates from AMSR-E at C and X bands to surface properties." Hydrology and Earth System Sciences 15, no. 11 (2011): 3577–89. http://dx.doi.org/10.5194/hess-15-3577-2011.

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Abstract. Microwave observations at low frequencies exhibit more sensitivity to surface and subsurface properties with little interference from the atmosphere. The objective of this study is to develop a global land emissivity product using passive microwave observations from the Advanced Microwave Scanning Radiometer – Earth Observing System (AMSR-E) and to investigate its sensitivity to land surface properties. The developed product complements existing land emissivity products from SSM/I and AMSU by adding land emissivity estimates at two lower frequencies, 6.9 and 10.65 GHz (C- and X-band,
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Wang, D., C. Prigent, L. Kilic, et al. "Surface Emissivity at Microwaves to Millimeter Waves over Polar Regions: Parameterization and Evaluation with Aircraft Experiments." Journal of Atmospheric and Oceanic Technology 34, no. 5 (2017): 1039–59. http://dx.doi.org/10.1175/jtech-d-16-0188.1.

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AbstractThe Tool to Estimate Land Surface Emissivity from Microwave to Submillimeter Waves (TELSEM2) is linked to a climatology of monthly emissivity estimates and provides a parameterization of the surface emissivity up to 700 GHz, in the framework of the preparation for the Ice Cloud Imager (ICI) on board the Meteorological Operational Satellite Second Generation (MetOp-SG). It is an updated version of the Tool to Estimate Land Surface Emissivities at Microwave Frequencies (TELSEM; Aires et al. 2011). This study presents the parameterization of continental snow and ice and sea ice emissiviti
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Polderman, I. M., M. Haverkorn, T. R. Jaffe, and M. I. R. Alves. "Low-frequency measurements of synchrotron absorbing HII regions and modeling of observed synchrotron emissivity." Astronomy & Astrophysics 621 (January 2019): A127. http://dx.doi.org/10.1051/0004-6361/201834405.

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Context. Cosmic rays (CRs) and magnetic fields are dynamically important components in the Galaxy, and their energy densities are comparable to that of the turbulent interstellar gas. The interaction of CRs and Galactic magnetic fields (GMF) produces synchrotron radiation clearly visible in the radio regime. Detailed measurements of synchrotron radiation averaged over the line-of-sight (LOS), so-called synchrotron emissivities, can be used as a tracer of the CR density and GMF strength. Aims. Our aim is to model the synchrotron emissivity in the Milky Way using a three-dimensional dataset inst
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Tang, Bo-Hui, Hua Wu, Chuanrong Li, and Zhao-Liang Li. "Estimation of broadband surface emissivity from narrowband emissivities." Optics Express 19, no. 1 (2010): 185. http://dx.doi.org/10.1364/oe.19.000185.

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Malone, C. G., B. I. Choi, M. I. Flik, and E. G. Cravalho. "Spectral Emissivity of Optically Anisotropic Solid Media." Journal of Heat Transfer 115, no. 4 (1993): 1021–28. http://dx.doi.org/10.1115/1.2911356.

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This work determines the spectral emissivity of a semi-infinite uniaxial medium in vacuum. If the optic axis is normal to the surface, then, for many materials and wavelengths, such as rutile between 10 and 25 μm, the directional and hemispherical spectral emissivities of the medium can be approximated, with an error of less than 10 percent, as those of an isotropic medium possessing the ordinary optical constants. In contrast, if the optic axis is parallel to the surface, the directional and hemispherical spectral emissivities can be predicted only by accounting for the optical anisotropy of
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Dissertations / Theses on the topic "Emissivitet"

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Flodström, Dante. "Smutsens påverkan på termisk emissivitet i uniformspersedlar." Thesis, Försvarshögskolan, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-9891.

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The objective of this study is to determine whether the accumulation of dirt on a battle dress garment affects the emissivity of said garment in the thermal radiation spectrum (8-12 μm). This is researched for the purpose of identifying whether there is a need for military units to spend time and resources on keeping battle dresses clean to minimize their thermal signature.To accomplish said objective, two experiments were conducted with the Swedish uniformssystem 90 (battle dress system) to determine change in emissivity due to dirt accumulation in relation to clean garments. Dirty garments w
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Öberg, Malin. "Optimerade material för optiska komponenter i koncentrerande solfångare." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-106075.

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The energy consumption continues to increase as the use of electronics and energy consuming equipment increases. The use of fossil fuels has to be phased out for this to be sustainable in the long run while the use of renewable energy continues to increase. A renewable energy source is solar energy but the production of heat and electricity are today very expensive compared to other energy sources and an important task for the solar energy market to grow is therefore to minimize the production cost of the solar collectors while increasing its efficiency to produce heat and/or electricity. One
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Lindqvist, Elias, and Sebastian Mäcs. "Värmestrålningssköldar som brandskydd av stålelement : En teoretisk undersökning." Thesis, Uppsala universitet, Byggteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-257580.

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I samband med ett brandförsök i Australien ämnat att undersöka sprinklersystem, testades även några enklare värmestrålningssköldar av olika högreflekterande material. I försöket placerades tre obelastade pelare ut och utsattes för full brand. Två av pelarna avskärmades med förzinkad stålplåt respektive aluminiserad stålplåt och en pelare var helt oskyddad och användes som referens. Mätningar från brandförsöket visar att den maximala ståltemperaturen, i de tre olika pelarna, uppmättes till 580°C, 427°C respektive 1064°C. Även då resultaten var positiva har få vidare undersökningar utförts, vilk
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Monchau, Jean-Pierre. "Mesure d'émissivité pour la thermographie infrarouge appliquée au diagnostic quantitatif des structures." Thesis, Paris Est, 2013. http://www.theses.fr/2013PEST1128/document.

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La thermographie infrarouge constitue un outil de diagnostic très utile dans le domaine du bâtiment et du génie civil. Cependant un diagnostic quantitatif reste difficile, et l'émissivité des surfaces étudiées joue un rôle important. Le présent travail est une étude sur la mesure d'émissivité pour le diagnostic quantitatif des structures par thermographie. Un des enjeux est de compléter une base de données d'émissivité pour des matériaux du bâtiment et du génie civil ; pour cela il a été nécessaire de développer des appareils de mesure portables. Deux appareils ont été développés au CERTES, ut
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Campione, Ivo. "Integrazione tra analisi termografica e rilievo tridimensionale: studio metodologico e verifiche sperimentali." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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La termografia 3D, tema oggetto di molta ricerca negli ultimi anni, sfrutta tecniche di data fusion che consentono l’integrazione tra dato termografico e dato tridimensionale, proveniente da strumenti di ingegneria inversa. La termografia 3D ha numerose applicazioni e potenzialità, le più note in ambito ingegneristico, medico e di conservazione dei beni culturali. Partendo dalla tesi di dottorato dell’Ing. Francesca Lucchi e da un’accurata analisi dello stato dell’arte, è stata sviluppata una metodologia, per quanto possibile rigorosa ma di agevole implementazione, per unire i dati provenient
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Sahli, Khaled. "Lueur negative d'oxygene : especes reactives et emissivite." Paris 11, 1991. http://www.theses.fr/1991PA112275.

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Le sujet de la these est l'etude d'un type particulier de plasma d'oxygene cree par faisceau d'electrons (1 kev, 20 ma/cm#2), lueur negative d'une decharge luminescente en regime anormal. Il s'agit de tester les qualites de ce plasma en tant que source de deux especes actives de l'oxygene utiles dans les applications: l'oxygene atomique et l'oxygene moleculaire singulet. L'experience porte pour l'essentiel sur les mesures par spectroscopie d'absorption v. U. V. (120 nm a 150 nm) des concentrations de ces deux especes et sur l'enregistrement des profils spatiaux d'emissivite du plasma dans le v
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Lefebvre, Anthony. "Simulation et conception de microsources infrarouges nanophotoniques pour la détection de gaz." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLO002/document.

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L’utilisation de micromembranes suspendues chauffées par effet Joule comme source de rayonnement infrarouge est une piste prometteuse pour la réalisation de détecteurs de gaz compacts, basse consommation et à bas coût. Afin d’améliorer l’efficacité de ces dispositifs récemment introduits, il est nécessaire d’optimiser ceux-ci à la fois du point de vue optique et thermique.En ajoutant des résonateurs plasmoniques frustrés sur les membranes, il est possible de modifier l’émissivité de ces dernières, afin de contrôler spectralement et angulairement le rayonnement émis. De cette façon, la puissanc
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Whisman, Curtis D. "Emissivity of rocket plume particulates." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23876.

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Approved for public release; distribution is unlimited<br>The optical properties of motor aluminum oxide are required inputs to current plume signature prediction codes, such as SIRRM. Accurate predictions are possible only if variations in the particle emissivity due to changes in particle size, contamination, and changing temperature, etc. , are known . This investigation demonstrated a simplified method for determination of the emissivity of rocket motor generated alumina. Plume particulate material was collected on tungsten alloy wire during motor firings. A DC circuit was used
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Currano, Joseph A. "Heat flux-based emissivity measurement." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7397.

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Thesis (M.S.) -- University of Maryland, College Park, 2007.<br>Thesis research directed by: Dept. of Mechanical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Oliveira, Alexandre Machado de. "Emissivity Profiles at TCABR Tokamak." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-05092017-154738/.

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The determination of plasma equilibrium profiles is necessary to evaluate the properties of the confinement and to investigate perturbation effects. Optical diagnostics can be used to determine some of these profiles. However, these diagnostics measure all emitted radiation at a solid angle that illuminate each diagnostic channel through a slit. Therefore, the real measured quantity is the emissivity integrated along the line-of-sight and some unfolding procedure, like Abels inversion, is commonly used to recover the emissivity profile. In TCABR tokamak, at the Physics Institute of the Univers
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Books on the topic "Emissivitet"

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Whisman, Curtis D. Emissivity of rocket plume particulates. Naval Postgraduate School, 1992.

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Illinger, Karl H. Millimeter-wave emissivity of cellular systems. U.S. Environmental Protection Agency, Health Effects Research Laboratory, 1987.

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Illinger, Karl H. Millimeter-wave emissivity of cellular systems. U.S. Environmental Protection Agency, Health Effects Research Laboratory, 1987.

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Illinger, Karl H. Millimeter-wave emissivity of cellular systems. U.S. Environmental Protection Agency, Health Effects Research Laboratory, 1987.

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Illinger, Karl H. Millimeter-wave emissivity of cellular systems. U.S. Environmental Protection Agency, Health Effects Research Laboratory, 1987.

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Illinger, Karl H. Millimeter-wave emissivity of cellular systems. U.S. Environmental Protection Agency, Health Effects Research Laboratory, 1987.

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Coal, British. Production of industrial fuel gas for applications requiring high flame temperature and high emissivity. Commission of the European Communities, 1989.

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Millington, Aidan. Emissivity: Characteristics, Determination and Applications. Nova Science Publishers, Incorporated, 2019.

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United States. National Aeronautics and Space Administration., ed. Measurement of emissivity of industrial surfaces using a simple method. National Aeronautics and Space Administration, 1988.

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Surface emissivity maps for use in satellite retrievals of longwave radiation. National Aeronautics and Space Administration, Langley Research Center, 1999.

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Book chapters on the topic "Emissivitet"

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Weik, Martin H. "emissivity." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_6112.

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Rouan, Daniel. "Emissivity." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_506-2.

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Rouan, Daniel. "Emissivity." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_506.

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Rouan, Daniel. "Emissivity." In Encyclopedia of Astrobiology. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_506.

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Kusuma, K. N. "Emissivity." In Encyclopedia of Lunar Science. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-05546-6_196-1.

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Bondarenko, Nataliya. "Emissivity Parabola." In Encyclopedia of Planetary Landforms. Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-9213-9_448-1.

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Liang, Shunlin, Xiaotong Zhang, Zhiqiang Xiao, Jie Cheng, Qiang Liu, and Xiang Zhao. "Longwave Emissivity." In Global LAnd Surface Satellite (GLASS) Products. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-02588-9_4.

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Bondarenko, Nataliya. "Emissivity Parabola." In Encyclopedia of Planetary Landforms. Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4614-3134-3_448.

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Weik, Martin H. "total emissivity." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_19765.

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Sapritsky, Victor, and Alexander Prokhorov. "Effective Emissivity." In Blackbody Radiometry. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-57789-6_4.

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Conference papers on the topic "Emissivitet"

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Liu, Dong, Yuan-Yuan Duan, and Zhen Yang. "Theoretical Predictions of Spectral Emissivity for Coal Ash Deposits." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17413.

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Ash deposits decrease the boiler efficiency, reduce the generating capacity and cause unscheduled outages. The radiative heat transfer is the major heat transfer mechanism in utility boilers; thus, the ash deposit emissivity is critical to boiler efficiency and safety. This paper presents a radiative transfer model to predict the spectral emissivities of coal ash deposits. The model includes the effects of the microstructure, chemical composition and temperature. Typical ash deposit microstructures are generated using diffusion-limited aggregation (DLA). The radiative properties are then calcu
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Crane, Nathan B. "Low-Cost Pyrometric Temperature Measurement in Concentrated Sunlight With Emissivity Determination." In ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/es2008-54258.

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A method for correcting pyrometric temperature measurements of high temperature objects with unknown emissivity is presented. The method also estimates surface emissivity a the pyrometer wavelengths. It is particularly useful for correcting errors due to reflected light in solar heating applications. The method requires two or more narrow band pyrometers and can be applied to low-cost commercial instruments. The method analyzes the temperature measurements of multiple pyrometers operating at different wavelengths across a range of sample temperatures to solve for the surface emissivities that
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Linka, S., S. Wirtz, and V. Scherer. "Spectral Thermal Radiation Characteristics of Coal Ashes and Slags: Influence of Chemical Composition and Temperature." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47187.

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During the combustion of pulverized coal, ash particles (formed from inorganic species) can deposit on heat-transfer surfaces, resulting in a decrease in heat transfer rates and system efficiency. In addition to the knowledge of the thermal conductivity of the deposits it is necessary to obtain information on the thermal radiation characteristics of the furnace walls to predict the influence of ash sedimentation on heat transfer. At the Department of Energy Plant Technology investigations on the spectral emissivity of different coal ashes and slags were performed applying a spectral radiometer
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Slattery, Stuart R., Tamara L. Malaney, Scott J. Weber, Mark H. Anderson, Kumar Sridharan, and Todd R. Allen. "System for High Temperature Spectral Emissivity Measurement of Materials for VHTR Applications." In Fourth International Topical Meeting on High Temperature Reactor Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/htr2008-58053.

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An experimental system for in situ high temperature measurements of spectral emissivity of VHTR materials has been designed and constructed. The design consists of a cylindrical block of silicon carbide with several machined cavities for placement of test samples, as well as a black body cavity. The block is placed inside a furnace for heating to temperatures up to 1000°C. A shutter system allows for selective exposure of any given test sample for emissivity measurements. An optical periscope guides the thermal radiation from the sample to a Fourier Transform Infra Red (FTIR) spectrometer whic
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Nahid, Mohammad N., and Brian Y. Lattimer. "Modeling Heat Transfer During Furnace Fire Exposures." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-88127.

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Thermal modeling is an important aspect in evaluating the fire resistance of a structure subjected to a furnace exposure. A common approach for predicting temperatures in thermo-structural modeling is with an effective emissivity meant to account for radiation exchange between surfaces of different temperature (“shadow effect”), radiation from gas participating media, and surface emissivity. Several methods have been proposed using gas radiation only models to provide a basis for the choice of effective emissivity, but no evaluations have considered the gas interaction and surface-to-surface i
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Lin, Qin, and Stephen J. Harrison. "Experimental Study on Natural Convection in an Asymmetrically Heated Inclined Channel With Radiation Exchange." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47202.

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Heat transfer in an asymmetrically heated, inclined channel by natural convection and radiation exchange was experimentally investigated. Experiments were conducted on channels with small inclination angle (to horizontal) ranging from 18° to 30° and a wall surface emissivity of 0.29 to 0.95. The channel length/space ratio was between 44 and 220. In each test, a uniform heat flux was applied along the top wall of the channel, while the bottom wall was thermally insulated. Temperature profiles along both the top and bottom walls of the channel were recorded under different heat flux and channel
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Araya, Pablo E., and Miles Greiner. "Use of Regular Rod Arrays to Model Heat Transfer From BWR Fuel Assemblies Inside Transport Casks." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26686.

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The current work is a scoping study to determine which heat transfer effects are significant in the fuel/backfill gas region of spent nuclear fuel transport casks. A two-dimensional finite volume mesh that accurately models the geometry of a 7×7 Boiling Water Reactor (BWR) assembly with its channel in a square isothermal enclosure is constructed. The peak cladding temperature is determined using computational fluid dynamics (CFD) simulations for a range of enclosure temperatures, fuel heat generation rates, cladding surface emissivities, and for both nitrogen and helium backfill gases. This wo
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Krishnamoorthy, Gautham, Muhammad Sami, Stefano Orsino, Anura Perera, Mehrdad Shahnam, and E. David Huckaby. "Radiation Modeling in Oxy-Fuel Combustion Scenarios." In ASME 2009 Power Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/power2009-81210.

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Three gray models for the radiative properties of gases were examined for their usage in oxy-combustion simulations of a full scale boiler with flue gas recycle. Fully coupled computational fluid dynamic (CFD) simulations of a full scale boiler were carried out employing the weighted-sum-of-gray-gases model (WSGGM) at air burn, dry-recycle and wet-recycle conditions. The resulting thermal and composition fields were then frozen and the radiative properties of the gaseous media recomputed employing the Exponential Wide Band Model (EWBM) and correlations for total emissivities of gas mixtures. I
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Hofgren, Henrik, and Bengt Sundén. "Modeling Thermal Radiation With Focus on Particle Radiation in Grate Fired Furnaces Combusting MSW or Biomass: A Parametric Study." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62882.

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This parametric study shows that thermal radiation from particles, fly ash and char, can be highly relevant for estimating the radiative heat flux to surfaces in grate fired furnaces, especially to the hot bed. The large effects of particle radiative heat transfer come from cases with municipal solid waste (MSW) as fuel whereas biomass cases have moderate effect on the overall radiative heat transfer. The parameters investigated in the study were the fuel parameters, representing a variety of particle loads and size distributions, emissivities of walls and bed, and the size of furnace. The inv
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Wen, Chang-Da. "Experimental Investigation of Emissivity of Aluminum Alloys and Application of Multispectral Radiation Thermometry." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22538.

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Experiments were first conducted to measure the spectral normal emissivity values of a variety of aluminum alloys at 600, 700, and 800 K. Multispectral radiation thermometry (MRT) using linear emissivity models (LEM) and log-linear emissivity models (LLE) were then applied to predict surface temperature. Results show that the spectral emissivity decreases with increasing wavelength and increases with increasing temperature. Alloy effect becomes evident at higher temperature. The surface oxidation becomes fully-developed after the first hour heating and results in constant emissivity. Half of t
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Reports on the topic "Emissivitet"

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Christopher J. Zygarlicke, Donald P. McCollor, and Charlene R. Crocker. ASH EMISSIVITY CHARACTERIZATION AND PREDICTION. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/778529.

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Morgan, Robert Vaughn, Robert Stowers Reid, Andrew M. Baker, Briana Lucero, and John David Bernardin. Emissivity Measurements of Additively Manufactured Materials. Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1341825.

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Pine, David J. Self Assembly of Low-Emissivity Materials (SALEM). Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada391142.

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Walton, A. J., and G. T. Reynolds. Emissivity of Deep Sea Hydrothermal Vent Plumes. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada384381.

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Asher, William E. Breaking Waves and Microwave Polarimetric Emissivities: Final Report. Defense Technical Information Center, 2005. http://dx.doi.org/10.21236/ada433619.

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Heasler, Patrick G., Michael G. Foley, and Sandra E. Thompson. Consequences of Mixed Pixels on Temperature Emissivity Separation. Office of Scientific and Technical Information (OSTI), 2007. http://dx.doi.org/10.2172/1133253.

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Sutherland, Robert A. Verification of the Aerosol Emissivity Model, PILOT-EX. Defense Technical Information Center, 2002. http://dx.doi.org/10.21236/ada404448.

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Yue, J. J., and B. V. Cockeram. Emissivity enhancement coatings for thermophotovoltaic (TPV) radiator applications. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/677064.

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Winckler, Lisa. Low-Emissivity, Energy-Control, Retrofit Window Film: Final Report. Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1089147.

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Shurtz, Randy. Total Hemispherical Emissivity of Metals Applicable to Radiant Heat Testing. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1483461.

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