The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform
A. Sreekumar - One of the best experts on this subject based on the ideXlab platform.
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cold thermal energy storage with Lauryl Alcohol and cetyl Alcohol eutectic mixture thermophysical studies and experimental investigation
Journal of energy storage, 2020Co-Authors: Nadiya Philip, Raam G Dheep, A. SreekumarAbstract:Abstract The surging demand for thermal energy storage (TES) directs considerable attention towards the development of phase change materials (PCMs). This study has the objective to develop a eutectic PCM for effective cold thermal energy storage. The work involves preparation, thermophysical property analysis and experimental studies of a novel binary eutectic mixture. The technique of Differential Scanning Calorimetry is used in determination of thermophysical properties of the prepared eutectic. Results show that the 80:20 eutectic composition of Lauryl Alcohol and cetyl Alcohol with melting temperature of 20.01 °C and latent heat of 191.63 J g−1 is fit for use in cold thermal energy storage. The material also proves to have good thermal conductivity. Thermal stability and reliability studies which are carried out using accelerated thermal cycling tests and thermo gravimetric analysis provide positive reports for the new mixture. An experimental investigation on the effectiveness of the identified PCM is carried out by using it in a cold storage chamber. Experimental studies report a solid improvement in cold energy containment of the PCM incorporated storage chamber resulting in considerable energy savings.
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Thermo-physical investigation and experimental discharge characteristics of Lauryl Alcohol as a potential phase change material for thermal management in buildings
Renewable Energy, 2020Co-Authors: C. Veerakumar, A. SreekumarAbstract:Abstract This article focuses on the investigation of thermo-physical properties of Lauryl Alcohol, an organic fatty Alcohol as a potential phase change material for thermal management in buildings. The thermal properties of Lauryl Alcohol over repeated accelerated thermal cycles were investigated by using differential scanning calorimetry. The chemical stability was studied using Fourier transform infrared spectroscopy. The commonly used heat exchanger construction materials such as copper, aluminium and stainless steel 316 were subjected to corrosion analysis and the results were presented. Further, the experimental discharge characteristics of Lauryl Alcohol as phase change material in a prototype test chamber with internal and external load were performed. In case of internal load condition, the internal chamber air temperature is a key factor for the temperature drop in the chamber and in case of external load condition, better results are obtained in experiments conducted with high inlet temperature and low inlet air velocity.
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Lauryl Alcohol and stearyl Alcohol eutectic for cold thermal energy storage in buildings: Preparation, thermophysical studies and performance analysis
Journal of Energy Storage, 2020Co-Authors: Nadiya Philip, C. Veerakumar, A. SreekumarAbstract:Abstract Energy storage is recognized as being of pivotal importance in development of sustainable buildings. This research focuses on exploration of a novel cold thermal energy storage material that effectively imparts thermal comfort in buildings. The newly identified eutectic phase change material (PCM) comprises of Lauryl Alcohol and stearyl Alcohol in the composition 90:10. For enabling its use in various cooling applications, the thermophysical properties of the identified PCM requires careful examination. By Differential Scanning Calorimetry analysis, the melting point and latent heat of fusion of the new eutectic are 22.93 °C and 205.79 J g − 1, fitting the intended application. Thermal conductivity studies, thermogravimetric analysis and thermal cycling tests ascertain the material competency. The new eutectic also accounts for successful performance during its charge-discharge studies in a thermal energy storage integrated prototype test chamber. It is concluded that the developed PCM is an able material for thermal energy storage and indoor comfort in buildings.
Zhaofu Zhang - One of the best experts on this subject based on the ideXlab platform.
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Hydrogenation of methyl laurate to produce Lauryl Alcohol over Cu/ZnO/Al 2 O 3 with methanol as the solvent and hydrogen source
Pure and Applied Chemistry, 2011Co-Authors: Shuguang Liang, Weitao Wang, Tao Jiang, Zhaofu ZhangAbstract:Hydrogenation of methyl laurate was conducted over a Cu/ZnO/Al 2 O 3 catalyst, using methanol as the solvent and hydrogen source, to give Lauryl Alcohol. In this process, the solvent underwent partial decomposition in contact with the catalyst to generate hydrogen, which served as the hydrogenation agent. The effect of different factors on the reaction was examined, to optimize production of Lauryl Alcohol with high conversion efficiency and selec- tivity. Use of methanol as the solvent not only favored the reaction, but also suppressed a side reaction involving transesterification between methyl laurate and Lauryl Alcohol. Under opti- mal reaction conditions, 91.8 % conversion of methyl laurate and 88.8 % yield of Lauryl Alcohol could be achieved.
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hydrogenation of methyl laurate to produce Lauryl Alcohol over cu zno al 2 o 3 with methanol as the solvent and hydrogen source
Pure and Applied Chemistry, 2011Co-Authors: Shuguang Liang, Zhaofu Zhang, Weitao Wang, Tao Jiang, Huizhen Liu, Jinli Liu, Buxing HanAbstract:Hydrogenation of methyl laurate was conducted over a Cu/ZnO/Al 2 O 3 catalyst, using methanol as the solvent and hydrogen source, to give Lauryl Alcohol. In this process, the solvent underwent partial decomposition in contact with the catalyst to generate hydrogen, which served as the hydrogenation agent. The effect of different factors on the reaction was examined, to optimize production of Lauryl Alcohol with high conversion efficiency and selec- tivity. Use of methanol as the solvent not only favored the reaction, but also suppressed a side reaction involving transesterification between methyl laurate and Lauryl Alcohol. Under opti- mal reaction conditions, 91.8 % conversion of methyl laurate and 88.8 % yield of Lauryl Alcohol could be achieved.
Shuguang Liang - One of the best experts on this subject based on the ideXlab platform.
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Hydrogenation of methyl laurate to produce Lauryl Alcohol over Cu/ZnO/Al 2 O 3 with methanol as the solvent and hydrogen source
Pure and Applied Chemistry, 2011Co-Authors: Shuguang Liang, Weitao Wang, Tao Jiang, Zhaofu ZhangAbstract:Hydrogenation of methyl laurate was conducted over a Cu/ZnO/Al 2 O 3 catalyst, using methanol as the solvent and hydrogen source, to give Lauryl Alcohol. In this process, the solvent underwent partial decomposition in contact with the catalyst to generate hydrogen, which served as the hydrogenation agent. The effect of different factors on the reaction was examined, to optimize production of Lauryl Alcohol with high conversion efficiency and selec- tivity. Use of methanol as the solvent not only favored the reaction, but also suppressed a side reaction involving transesterification between methyl laurate and Lauryl Alcohol. Under opti- mal reaction conditions, 91.8 % conversion of methyl laurate and 88.8 % yield of Lauryl Alcohol could be achieved.
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hydrogenation of methyl laurate to produce Lauryl Alcohol over cu zno al 2 o 3 with methanol as the solvent and hydrogen source
Pure and Applied Chemistry, 2011Co-Authors: Shuguang Liang, Zhaofu Zhang, Weitao Wang, Tao Jiang, Huizhen Liu, Jinli Liu, Buxing HanAbstract:Hydrogenation of methyl laurate was conducted over a Cu/ZnO/Al 2 O 3 catalyst, using methanol as the solvent and hydrogen source, to give Lauryl Alcohol. In this process, the solvent underwent partial decomposition in contact with the catalyst to generate hydrogen, which served as the hydrogenation agent. The effect of different factors on the reaction was examined, to optimize production of Lauryl Alcohol with high conversion efficiency and selec- tivity. Use of methanol as the solvent not only favored the reaction, but also suppressed a side reaction involving transesterification between methyl laurate and Lauryl Alcohol. Under opti- mal reaction conditions, 91.8 % conversion of methyl laurate and 88.8 % yield of Lauryl Alcohol could be achieved.
Shinzo Omi - One of the best experts on this subject based on the ideXlab platform.
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Effect of Lauryl Alcohol on Morphology of Uniform Polystyrene–Poly(methyl methacrylate) Composite Microspheres Prepared by Porous Glass Membrane Emulsification Technique
Journal of colloid and interface science, 1999Co-Authors: Masatoshi Nagai, Shinzo OmiAbstract:Abstract Fairly uniform poly(styrene)–poly(methyl methacrylate) (PST–PMMA) composite microspheres were prepared by employing an SPG (Shirasu Porous Glass) membrane emulsification technique. A mixture of PST, PMMA, and cosurfactant [Lauryl Alcohol (LOH)] dissolved in dichloromethane (DCM) was used as the dispersed phase, and an aqueous phase containing poly(vinyl Alcohol) and sodium Lauryl sulfate was used as the continuous phase. It is necessary to add LOH to obtain uniform particles with the SPG emulsification technique. The effects of the volume of LOH on the morphology of the final particles were investigated by varying the volume of LOH from 0 to 2 ml (per 1.2 g polymer). A three-component model was developed for different PMMA/PST ratios and LOH/polymer ratios, based on Sundberg's theory; and the calculation on morphology was carried out by using the three-component model. Agreement was obtained between experimental and calculated results. When 2 ml of LOH was added, it was found that LOH can engulf the polymer particles completely; a hemicore (HCP1P2P3) morphology, where PST and PMMA formed a hemisphere core inside a LOH shell, was observed when the PMMA/PST ratio was high, while core–shell–shell (CSP1P2P3) morphology, where PMMA formed a core and PST and LOH formed an inner shell and an outer shell, respectively, was observed when the PMMA/PST ratio was low. When the volume of LOH was below 1 ml (per 1.2 g polymer), however, LOH could not always engulf the inner polymer particles completely; cored hemisphere (CHSP3P2P1), core–shell–shell (CSP2P1P3), and hemicore (HCP1P2P3) morphologies were observed, depending on the PMMA/PST ratio and volume of LOH.
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effect of Lauryl Alcohol on morphology of uniform polystyrene poly methyl methacrylate composite microspheres prepared by porous glass membrane emulsification technique
Journal of Colloid and Interface Science, 1999Co-Authors: Masatoshi Nagai, Shinzo OmiAbstract:Abstract Fairly uniform poly(styrene)–poly(methyl methacrylate) (PST–PMMA) composite microspheres were prepared by employing an SPG (Shirasu Porous Glass) membrane emulsification technique. A mixture of PST, PMMA, and cosurfactant [Lauryl Alcohol (LOH)] dissolved in dichloromethane (DCM) was used as the dispersed phase, and an aqueous phase containing poly(vinyl Alcohol) and sodium Lauryl sulfate was used as the continuous phase. It is necessary to add LOH to obtain uniform particles with the SPG emulsification technique. The effects of the volume of LOH on the morphology of the final particles were investigated by varying the volume of LOH from 0 to 2 ml (per 1.2 g polymer). A three-component model was developed for different PMMA/PST ratios and LOH/polymer ratios, based on Sundberg's theory; and the calculation on morphology was carried out by using the three-component model. Agreement was obtained between experimental and calculated results. When 2 ml of LOH was added, it was found that LOH can engulf the polymer particles completely; a hemicore (HCP1P2P3) morphology, where PST and PMMA formed a hemisphere core inside a LOH shell, was observed when the PMMA/PST ratio was high, while core–shell–shell (CSP1P2P3) morphology, where PMMA formed a core and PST and LOH formed an inner shell and an outer shell, respectively, was observed when the PMMA/PST ratio was low. When the volume of LOH was below 1 ml (per 1.2 g polymer), however, LOH could not always engulf the inner polymer particles completely; cored hemisphere (CHSP3P2P1), core–shell–shell (CSP2P1P3), and hemicore (HCP1P2P3) morphologies were observed, depending on the PMMA/PST ratio and volume of LOH.
Buxing Han - One of the best experts on this subject based on the ideXlab platform.
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hydrogenation of methyl laurate to produce Lauryl Alcohol over cu zno al 2 o 3 with methanol as the solvent and hydrogen source
Pure and Applied Chemistry, 2011Co-Authors: Shuguang Liang, Zhaofu Zhang, Weitao Wang, Tao Jiang, Huizhen Liu, Jinli Liu, Buxing HanAbstract:Hydrogenation of methyl laurate was conducted over a Cu/ZnO/Al 2 O 3 catalyst, using methanol as the solvent and hydrogen source, to give Lauryl Alcohol. In this process, the solvent underwent partial decomposition in contact with the catalyst to generate hydrogen, which served as the hydrogenation agent. The effect of different factors on the reaction was examined, to optimize production of Lauryl Alcohol with high conversion efficiency and selec- tivity. Use of methanol as the solvent not only favored the reaction, but also suppressed a side reaction involving transesterification between methyl laurate and Lauryl Alcohol. Under opti- mal reaction conditions, 91.8 % conversion of methyl laurate and 88.8 % yield of Lauryl Alcohol could be achieved.