Relevant bibliographies by topics / Low Emissivity Materials

Academic literature on the topic 'Low Emissivity Materials'

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Published: 14 March 2023

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Journal articles on the topic "Low Emissivity Materials"

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Gao, Tao, and Bjørn Petter Jelle. "Silver nanoparticles as low-emissivity coating materials." Translational Materials Research 4, no. 1 (March 15, 2017): 015001. http://dx.doi.org/10.1088/2053-1613/aa5ad1.

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Alexa, Petr, Jaroslav Solař, Filip Čmiel, Pavel Valíček, and Miroslava Kadulová. "Infrared thermographic measurement of the surface temperature and emissivity of glossy materials." Journal of Building Physics 41, no. 6 (October 9, 2017): 533–46. http://dx.doi.org/10.1177/1744259117731344.

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Determination of the surface temperature and emissivity of glossy materials is a complicated task due to the relatively wide range of emissivity values and the reflection of infrared radiation from surrounding objects. As a consequence, standard methods used in infrared thermography are not applicable. In this article, an alternative method is proposed for the measurement of the surface temperature and emissivity of glossy materials used in the external structures of buildings that is based on an external source of thermal radiation. It is shown that the method gives quite accurate values of emissivity of both low- and high-emissivity glossy materials, whereas the surface temperature of low-emissivity glossy materials is less accurate and strongly depends on the accuracy of the used thermal camera.
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Chen, Mengshuo, Xiaoguang Jiang, Hua Wu, Yonggang Qian, and Ning Wang. "Temperature and emissivity retrieval from low-emissivity materials using hyperspectral thermal infrared data." International Journal of Remote Sensing 40, no. 5-6 (October 11, 2018): 1655–71. http://dx.doi.org/10.1080/01431161.2018.1524607.

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Li, Xinliang, Minghang Li, Xin Li, Xiaomeng Fan, and Chunyi Zhi. "Low Infrared Emissivity and Strong Stealth of Ti-Based MXenes." Research 2022 (May 23, 2022): 1–7. http://dx.doi.org/10.34133/2022/9892628.

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Advanced scenario-adaptable infrared (IR) stealth materials are crucial for creating localized closed thermal environments. Low emissivity over the broadest possible band is expected, as is superior mechanical deformability. Herein, we report a series of Ti-based MXenes with naturally low emissivity as ideal IR shielding materials. Over a wavelength ranging from 2.5 to 25 μm, Ti3C2TX film delivers an average emissivity of 0.057 with the lowest point of 0.042. Such a low emissivity coupled with outstanding structural shaping capability is beyond the current grasp. The reflection-dominated mechanism is dissected. Also, some intriguing scenarios of IR stealth for wearable electronic devices and skin thermal control are demonstrated. This finding lights an encouraging path toward next-generation IR shielding by the expanding MXene family.
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Adibekyan, Albert, Elena Kononogova, Jacques Hameury, Marcus Lauenstein, Christian Monte, and Jörg Hollandt. "Emissivity measurements on reflective insulation materials." tm - Technisches Messen 88, no. 10 (July 10, 2021): 617–25. http://dx.doi.org/10.1515/teme-2021-0049.

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Abstract The development and use of new thermal insulation products in many industrial sectors, ranging from building insulations to power generation or satellite applications, requires the accurate knowledge of the radiative properties of the investigated material, i. e. its emissivity. A major objective of the research project “Improvement of emissivity measurements on reflective insulation materials” within the framework of the European Metrology Programme for Innovation and Research was to improve and validate reference techniques for the measurement of the total hemispherical emissivity of low emissivity foils with an absolute measurement uncertainty below 0.03. The calibration and measurement procedures developed within this project shall lead to a significant benefit for industrial manufacturers of reflective foils as well as for the end-users of the industrial instruments used to characterize them.
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Qian, Yonggang, Ning Wang, Lingling Ma, Chen Mengshuo, Hua Wu, Li Liu, Qijin Han, et al. "Evaluation of Temperature and Emissivity Retrieval using Spectral Smoothness Method for Low-Emissivity Materials." IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 9, no. 9 (September 2016): 4307–15. http://dx.doi.org/10.1109/jstars.2016.2522464.

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Barreira, Eva, Ricardo M. S. F. Almeida, and Maria L. Simões. "Emissivity of Building Materials for Infrared Measurements." Sensors 21, no. 6 (March 11, 2021): 1961. http://dx.doi.org/10.3390/s21061961.

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Infrared thermography (IRT) is a technique increasingly used in building inspection. If in many applications it is sufficient to analyze the thermal patterns, others exist in which the exact determination of the surface temperature is a fundamental aspect. In these circumstances, the emissivity of the surfaces assumes special relevance, being probably the most important property in the definition of the boundary conditions. However, information on the uncertainty involved in its measurement, as well as the conditions that influence it, is scarce. This article presents an innovative contribution both to the characterization of the emissivity of various construction materials, and to the discussion of emissivity measurement procedures and the attendant uncertainty. In this sense, three experimental campaigns were carried out: T.I, preliminary tests to assess the initial conditions required for an accurate IRT measurement of the emissivity (reference tape and position of the camera); T.II, assessment of the emissivity of nine different building materials, in dry conditions, using the emissometer and the IRT and black tape methods; and T.III, assessment of the emissivity of three materials during the drying process. The results confirmed that emissivity is a crucial parameter for the accurate measurement of surface temperature. Emissivity measurements carried out with IRT (black tape method) and with the emissometer returned meaningful differences when compared with the values available in the literature. This disagreement led to surface temperature differences of up to 7 °C (emissometer versus reference values). This research also highlighted that the moisture content of the materials influences the emissivity values, with fluctuations that can be greater than 10%, and that the effect of moisture is visible even for low values of moisture content.
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Schläpfer, D., R. Richter, C. Popp, and P. Nygren. "DROACOR<sup>®</sup>-THERMAL: AUTOMATED TEMPERATURE / EMISSIVITY RETRIEVAL FOR DRONE BASED HYPERSPECTRAL IMAGING DATA." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B3-2022 (May 30, 2022): 429–34. http://dx.doi.org/10.5194/isprs-archives-xliii-b3-2022-429-2022.

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Abstract. Thermal remote sensing from unmanned aerial vehicles is a slowly but steadily growing field of application. New hyperspectral systems operating in the thermal infrared are deployable on such systems and are also usable for ground based monitoring, such as in mining applications. Temperature/emissivity retrieval methods have to be adapted for these new situations. This contribution presents an extension of the Drone Atmospheric Correction method (DROACOR®) for thermal infrared imaging spectroscopy. The method includes an implementation of the semi-automatic normalized emissivity mapping (NEM) method for temperature/ emissivity separation. Furthermore, an extension of the method for correction of low emissivity targets, appearing as cold targets in the temperature mapping is introduced. Two examples of DROACOR-thermal processing are presented for a nadir looking drone based and a horizontal ground based data acquisitions are shown. The resulting spectral emissivitiy distributions and temperature mappings are plausible. They are well comparable to spectral library references and allow for the detection of materials only visible in the thermal infrared range.
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Chen, Yan, Yi Bin Cui, Wen Xin Ma, Chun Wu, Li Yin Chen, Ping Ya, and Jing Li. "New Low Emissivity Coating on Cenospheres by Electroless Plating." Advanced Materials Research 529 (June 2012): 92–95. http://dx.doi.org/10.4028/www.scientific.net/amr.529.92.

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Low infrared emissivity materials based on cenosphere particles are prepared by chemical electroless Ni-coating process. This metal/inorganic composites were identified by FESEM and XRD, It can be concluded that nickel coatings are formed on the surface of cenospheres by electroless plating.and infrared emissivity properties were discussed.
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YUAN Lin-guang, 袁林光, 薛战理 XUE Zhan-li, 李宏光 LI Hong-guang, 李. 涛. LI Tao, and 杨鸿儒 YANG Hong-ru. "Measurement of normal emissivity of materials at low temperature." Optics and Precision Engineering 24, no. 1 (2016): 59–64. http://dx.doi.org/10.3788/ope.20162401.0059.

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Dissertations / Theses on the topic "Low Emissivity Materials"

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Kalnæs, Simen Edsjø. "State-of-the-Art and Future Building Envelopes: Application of Low Emissivity Materials, Phase Change Materials and Vacuum Insulation Panels." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for bygg, anlegg og transport, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-24257.

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Increasingly strict demands for the use of energy in buildings have put pressure on the construction industry to look for new ways to improve the built environment. This study has investigated three technologies, low-emissivity (low-e) materials, phase change materials (PCM) and vacuum insulation panels (VIP), and provided a state-of-the-art review of commercial products of these materials. Though the materials have different effects when applied to buildings, they all aim to increase energy efficiency and improve thermal comfort for the inhabitants.For the mentioned materials, examples of how they are implemented in buildings have been given and research that have been conducted and research that is still being conducted have been investigated. Reflections on steps that should be taken for future research have also been investigated. Herein lies the focus on improving the current technology, possible new technologies and steps that are needed for the materials to achieve large-scale application in the construction sector.
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Jarboe, Jason Neal. "A method for infrared temperature measurements of thin film materials with a low, unknown, and/or variable emissivity at low temperatures." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/84401.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references.
Accurate non-contact temperature measurements of objects using thermal radiation is often limited by low emission of IR radiation because of low temperatures and/or emissivities, or by the unknown or changing emissivity of the material being measured. This thesis covers an effort to build a practical, inexpensive, and widely applicable non-contact system for accurately measuring the temperatures of materials of low, unknown, and/or variable emissivity. The method to be used is intended specifically for those objects at low temperatures (below 100 degrees Celsius), which are conventionally the most difficult to accurately measure.
by Jason Neal Jarboe.
S.B.
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FANTUCCI, STEFANO. "Advanced materials for the energy retrofit of opaque building envelopes. From laboratory thermal characterisation to the application on the building components." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2711559.

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In EU almost 40% of the final energy use is consumed by the building sector. In particular, ~ 83% of existing buildings were built before 1991 when poor or no-energy regulations were applied. For this reason, pushing towards deep renovations of the existing building stock, which has an important energy saving potential, can be one of the best solutions to address the next targets of 40% reduction of the emissions until 2030 (Paris Agreement). Among the retrofit interventions, the renovation of building envelopes seems to be one of the most effective practice. Nevertheless, the intervention on building envelope presents several issues, since space saving, technological and historical compatibility represent important barriers which limit the large diffusion of envelope retrofit intervention. In the thesis four different advanced materials were deeply investigated: Super Insulating Materials, Advanced Thermal Plasters, Phase Change Materials, and Low Emittance Materials. These materials start to be attractive since they seem to be particularly suitable for all the cases in which usual envelope retrofit techniques cannot be adopted. Their high potential is mainly related to the high thermal performance (thermal insulation or storage capability) they are able to provide with lower thickness and less use of space if compared to traditional materials. Unfortunately, the building sector is a conservative market, and as a consequence, despite the great potentials of advanced materials, they are still poorly adopted, because of the high costs, the short durability (concerning the building lifetime) and the lack of knowledge about their actual thermal behaviour. The aim of the thesis is to overcome the barriers that limit the use of these advanced materials in buildings, providing methodologies, tools, data and guidelines related to their application in energy retrofit interventions on opaque building envelope components. For this reasons the research activities were focused on experimental (in lab and in-field) analyses and on numerical modelling. For each Advanced Material, the investigations were carried out at different scales: material, component and building scale. At material scale, laboratory assessment of the thermal performance and development of new testing procedures were carried out by using a Heat Flow Meter Apparatus. At building component scale, laboratory experiments using a double climatic chamber (Building Envelope Test cell) were performed. Moreover, each presented technology was installed in a real case study (demonstration buildings) and its performance was monitored under actual operating conditions. The results of the in-lab and in-field experimental activities were used for the empirical validation of different simulation software. Moreover, the validated models were used to test different design alternatives that allow defining new guidelines for the proper design of envelope retrofit making use of advanced materials. In the last phase, the analyses allowed to scale up from the component level to the building/room level, so to identify and to demonstrate the effects/benefits achievable through the adoption of the proposed advanced materials on IEQ and energy demand, in comparison to usual and conventional solutions.
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Book chapters on the topic "Low Emissivity Materials"

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Oberti, Ilaria. "Environmentally Friendly and Low-Emissivity Construction Materials and Furniture." In SpringerBriefs in Public Health, 73–81. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-49160-8_7.

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Maldague, Xavier P. V. "Inspection of Materials with Low Emissivity by Thermal Transfer Imaging." In Nondestructive Evaluation of Materials by Infrared Thermography, 139–47. London: Springer London, 1993. http://dx.doi.org/10.1007/978-1-4471-1995-1_7.

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Gainsbury, M. J. "INDUSTRIAL PRODUCTION OF LOW EMISSIVITY COATINGS." In Solar Optical Materials, 9–14. Elsevier, 1988. http://dx.doi.org/10.1016/b978-0-08-036613-5.50006-7.

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"Cause and Prediction Model of Low Infrared Emissivity for Resin/Flaky Metal Composite Coatings." In Materials in Environmental Engineering, 459–66. De Gruyter, 2017. http://dx.doi.org/10.1515/9783110516623-044.

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Conference papers on the topic "Low Emissivity Materials"

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Su, Jinwen. "Infrared radiation measurement for materials with low emissivity." In 15th International Conference on Infrared and Millimeter Waves. SPIE, 1990. http://dx.doi.org/10.1117/12.2301454.

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Arduini, Mariacarla, Manuela Campanale, and Lorenzo Moro. "Influence of Surface Emissivity and of Low Emissivity Shields on the Thermal Properties of Low Density Insulating Materials." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44630.

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The theory of heat transfer through low density insulating materials explains the importance of thermal radiation in the overall heat transfer. As a matter of fact, in many semitransparent insulating materials, radiation has a considerable influence on measured thermal conductivity. In this work we continue the investigation (both experimentally and theoretically) on the heat transfer through low density insulating materials that we started some years ago and whose results have been presented in some International Conferences. Test have been done on low density insulating materials: expanded polystyrene with a density of 10 kg/m3 and polyester fibres with a density of 9 kg/m3 (these last tests are not yet completed and will not be discussed in this paper). The transfer factor T was measured in the heat flow meter apparatus of our laboratory [1]. The first measurements have been done with the two surfaces of the apparatus uncoated (emissivity ε = 0.91) at a mean test temperature of 283 K (10 °C) and then with the specimens enclosed in the aluminium foils (emissivity ε = 0.045) at the same mean test temperature. The results obtained from the measurements of the transfer factor T pointed out that a change of the emissivity ε of the surfaces from 0.91 to 0.045 caused a considerable decreasing of the transfer factor. Then the same panels have been cut into two slices and the aluminium foil has been interposed also between the slices, as shield, and the transfer factor was measured again in both cases: at first with the surfaces of the apparatus uncoated and then with the surfaces of the apparatus coated with the aluminium foils. In both cases the decreasing of the transfer factor τ was not negligible. The radiation extinction parameters have been then measured with a spectrometer and a model has been found to predict the transfer factor T in function of the testing conditions. We can conclude that in presence of a thin reflective metal cover placed on a low density insulating material, the thermal conductivity decrease immediately (about 7%) with a significant improvement of the thermal characteristics of the insulating material. If we put then some low emissivity foils between the slices of the material, another considerable decreasing of the thermal conductivity can be obtained (about 10%) and in presence of both aluminum foils (inside and outside). This fact confirms the importance of the contribution of radiation in thermal transmissivity of low density insulating materials and gives the possibility to reduce and to predict the thermal performances of such a material.
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chen, wang, Yang Liu, Zongsheng Chen, and Dapeng Zhao. "Analysis of heat dissipation characteristics of selective low emissivity materials." In Fourteenth National Conference on Laser Technology and Optoelectronics, edited by Jianqiang Zhu, Zhenxi Zhang, Minlin Zhong, Jianrong Qiu, Weibiao Chen, and Pu Wang. SPIE, 2019. http://dx.doi.org/10.1117/12.2531437.

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Lu, Yuan, Xianyu Shen, Yunsong Feng, and Ya Qiao. "Design and its electromagnetic properties of low emissivity selective radiators in middle and far infrared bands." In Third International Conference on Optoelectronic Science and Materials (ICOSM 2021), edited by Siting Chen and Pei Wang. SPIE, 2021. http://dx.doi.org/10.1117/12.2617413.

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Panprom, P., C. Nawanil, S. Wangprom, W. Pimmata, S. Limvichian, M. Horprathum, and P. Eiamchai. "Growth of Ag/SnO2 thin film by DC magnetron sputtering deposition intended for low emissivity application." In INTERNATIONAL CONFERENCE ON SCIENCE AND TECHNOLOGY OF EMERGING MATERIALS: Proceedings of the Second International Conference on Science and Technology of Emerging Materials 2018. Author(s), 2018. http://dx.doi.org/10.1063/1.5053204.

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Wang, Hao, Jiaqi Chen, P. N. Balaguru, and Leith Al-Nazer. "Low Solar Absorption Coating for Reducing Rail Temperature." In 2014 Joint Rail Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/jrc2014-3819.

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The feasibility of using low-solar-absorption coatings to reduce the temperature rise of rails in summer is investigated in this paper using numerical analysis. Finite element (FE) models were developed based on the theory of heat transfer for predicting temperature fields in the rail track structure. Field measurements of air temperature and rail temperature were used to verify the modeled temperatures. Analysis results show that the developed FE models provide reasonable predictions of rail temperature. The 3-D rail temperature field shows that rail temperature differs spatially in the natural environment, which indicates that the current average temperature models may not provide accurate prediction of peak rail temperature. The peak temperature was observed at the top of rail seated on the wood ties. The developed FE models were further used to analyze the influence of solar absorptivity and emissivity of coating materials on rail temperature. Decreasing the absorptivity and increasing the emissivity of rail surface may decrease the peak rail temperature at different levels. The effect of decreased absorptivity was found to be more significant. This indicates that when an engineered coating material is applied on rail side surfaces, the peak rail temperature can be decreased significantly, which provides an alternative solution to reduce rail buckling risk without decreasing train speed or increasing the laydown temperature of rail. The experimental investigation of the effect of low solar absorption coating on rail temperature is ongoing.
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Smith, Allen C. "Radiation Heat Transfer Environment in Fire and Furnace Tests of Radioactive Materials Packages." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77017.

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The Hypothetical Accident Conditions (HAC) sequential tests of radioactive materials (RAM) packages includes a thermal test to confirm the ability of the package to withstand a transportation fire event. The test specified by the regulations (10 CFR 71) consists of a 30 minute, all engulfing, hydrocarbon fuel fire, with an average flame temperature of at least 800°C. The requirements specify an average emissivity for the fire of at least 0.9, which implies an essentially black radiation environment. Alternate tests which provide equivalent total heat input at the 800°C time averaged environmental temperature may also be employed. When alternate tests methods are employed, such as furnace or gaseous fuel fires, the equivalence of the radiation environment may require justification. The effects of furnace and open confinement fire environments are compared with the regulatory fire environment, including the effects of gases resulting from decomposition of package overpack materials. The results indicate that furnace tests can produce the required radiation heat transfer environment, i.e., equivalent to the postulated pool fire. An open enclosure, with transparent (low emissivity) fire does not produce an equivalent radiation environment.
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Pouliot, L., J. Blain, F. Nadeau, M. Lamontagne, J. F. Bisson, and C. Moreau. "Significant Increase in the Sensitivity of In-Flight Particle Detector Through Improvements and Innovation." In ITSC2001, edited by Christopher C. Berndt, Khiam A. Khor, and Erich F. Lugscheider. ASM International, 2001. http://dx.doi.org/10.31399/asm.cp.itsc2001p0723.

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Abstract Innovation and improvements are described which yield a 20 fold increase in the signal-to-noise level of a two fiber, twin wavelength high speed pyrometer used for in-flight particle diagnostics. Examples are given of how these developments extend the application range of the technology to low temperature processes such as flame spraying of low emissivity materials.
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Kamali Khanghah, Zahra, Miguel Moreno Tenorio, Judith Brown, Guilherme Mainieri Eymael, and Mohammad Ghashami. "Investigation of Passive Radiative Cooling Using Biopolymers." In ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-97143.

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Abstract Passive thermal radiative cooling (PTRC) has drawn massive attention in the past few years due to its advantages, including excellent cooling potential, no emission of greenhouse gases, silent operation, low maintenance, and off-grid operation. PTRC has been successfully demonstrated to reduce the electricity consumption required for cooling and ventilation of buildings. Several radiative emitters have been studied in the literature, such as pigmented paints, nanoparticle-based coatings, photonic crystals, metamaterials, and polymers. Among them, polymers have proven to be inherently strong infrared (IR) emitters, scalable, low-cost, flexible, easy to apply, and durable candidates. In addition to these features, biopolymers are eco-friendly and currently abundant in the market. Despite their significant advantages, there have been limited studies on the applications of biopolymers for radiative cooling. In this study, we report promising performances from a commercially available, affordable, and applicable biopolymer, cellulose, as a PTRC emitter. We fabricated several cellulose films with various structural characteristics and thicknesses. The emissivity and reflectivity of these emitter surfaces were measured for the desired wavelengths and direction. The obtained measurements reveal relatively high magnitudes of diffuse emissivity in the atmospheric window and high reflectivity in the solar spectrum range. Using the materials’ reflectivity and emissivity data, we theoretically calculated the net cooling power and the expected temperature drop. Each emitter demonstrated high cooling power and considerable temperature reduction based on the average recorded weather conditions in Lincoln, NE.
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Hossainpour, Siamak, and Bahman Haddadi. "Numerical Study of the Effects of Volumetric Heat Transfer and Emissivity Coefficient and Porosity on Combustion and Pollutants Formation in a Porous Burner." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68565.

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In recent years, more attention has been focused on the use of porous materials to enhance the efficiency of combustion systems and to reduce the emission of pollutants. This is because combustion in inert porous media offers an interesting and promising route towards burner with high-power density, high-power dynamic range, and very low emission of pollutants such as NOx and CO. This work reports one-dimensional combustion in a porous burner using three combustion models: GRI 3.0, GRI 2.11, skeletal mechanism. We conclude that GRI 2.11 mechanism has a good agreement with GRI 3.0 and it costs less. At first, we present a numerical study which shows the effects of these models on temperature, species and pollutant emissions. Then, we investigate the effects of volumetric heat transfer and emissivity coefficient and porosity on combustion and pollutions. It was concluded that NO and CO emission depend mainly on the volumetric and emissivity coefficient. When volumetric heat transfer increased, the difference between gas and solid temperature reduced, therewith NO formation noticeably decreased whereas CO emission didn’t change sensible. On the other hand, the flame peak temperature is increased with the reduction of the solid emissivity coefficient. This important conclusion means that NO and CO emission and velocity increases. Also gas and solid temperature increase and vice versa. The other parameter is Porosity. Increasing in porosity of burner resulted in decreasing gas and solid temperature and subsequently NO and CO emission decreased sensible. Porosity has effected on velocity, too. As porosity decreased, velocity increased. Emissivity effects on the rate of heat flux which issue from burner. As the emissivity increased the efficiency of burner arose. Also these parameters have important roles in decreasing the emission especially on No emission because it has more depend on temperature. In addition the resulted gas and solid temperatures were compared with reported measurements of center line temperature in a cylindrical porous burner. The good agreement with experimental observation upholds that the numerical model is a perfect tool to investigate combustion and pollutants formation in porous media.
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Reports on the topic "Low Emissivity Materials"

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

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