The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform
Jingjing Jiang - One of the best experts on this subject based on the ideXlab platform.
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experimental analysis of an internally cooled heated liquid desiccant dehumidifier regenerator made of thermally Conductive Plastic
Energy and Buildings, 2015Co-Authors: Tao Zhang, Jingjing JiangAbstract:Abstract Internally-cooled dehumidifiers that use liquid desiccant are supposed to be superior to the adiabatic type in terms of solution flow rate, device volume, etc. In the present study, an internally-cooled dehumidifier made of thermally Conductive Plastic was designed, and it achieved superior corrosion resistance. Its performance was investigated both experimentally and through simulation. An experimental chamber was built for this internally-cooled dehumidifier, and the experimental results in different working conditions were obtained using a lithium bromide (LiBr) aqueous solution. Performance indices including the moisture removal rate, dehumidification/regeneration efficiency, and volumetric mass transfer coefficient were analyzed in conjunction with the inlet parameters. Compared with the internally-cooled dehumidifiers made of metal materials described in the literature, the present analysis indicates that this Plastic dehumidifier demonstrated comparable heat and mass transfer performance, providing a feasible approach for an internally-cooled process. In addition, with the help of the experimental results, a numerical model was built and validated for this internally-cooled dehumidifier using liquid desiccant.
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Experimental analysis of an internally-cooled/heated liquid desiccant dehumidifier/regenerator made of thermally Conductive Plastic
Energy and Buildings, 2015Co-Authors: Jun Liu, Tao Zhang, Xiaohua Liu, Jingjing JiangAbstract:Abstract Internally-cooled dehumidifiers that use liquid desiccant are supposed to be superior to the adiabatic type in terms of solution flow rate, device volume, etc. In the present study, an internally-cooled dehumidifier made of thermally Conductive Plastic was designed, and it achieved superior corrosion resistance. Its performance was investigated both experimentally and through simulation. An experimental chamber was built for this internally-cooled dehumidifier, and the experimental results in different working conditions were obtained using a lithium bromide (LiBr) aqueous solution. Performance indices including the moisture removal rate, dehumidification/regeneration efficiency, and volumetric mass transfer coefficient were analyzed in conjunction with the inlet parameters. Compared with the internally-cooled dehumidifiers made of metal materials described in the literature, the present analysis indicates that this Plastic dehumidifier demonstrated comparable heat and mass transfer performance, providing a feasible approach for an internally-cooled process. In addition, with the help of the experimental results, a numerical model was built and validated for this internally-cooled dehumidifier using liquid desiccant.
Jonathan Jouret - One of the best experts on this subject based on the ideXlab platform.
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A comparison of the performance of samplers for respirable dust in workplaces and laboratory analysis for respirable quartz
Annals of Occupational Hygiene, 2013Co-Authors: Steven Verpaele, Jonathan JouretAbstract:The divergent sampling techniques for respirable dust and the analyses for crystalline silica are an important area of interest and discussion among industrial occupational hygienists in Europe. The variety of equipment for air sampling, methods and instrumentation can cause differences between results for the analysis of respirable crystalline silica (RCS). In this study, a Workplace Atmosphere Multi-sampler (WAM), developed by Adhesia, was used to compare respirable dust samplers in the workplace. This rotating device enables the comparison of 12 samplers in a workplace in each run. Seven laboratories participated in the comparison, using six different respirable dust samplers [British Cast Iron Research Association (BCIRA) to the Higgins Dewell (HD) design, Dorr Oliver, Casella SIMPEDS, SKC HD with a polycarbonate filter and polyvinylchloride filter, and the CIP10-R). Each laboratory analysed samples supplied by the samplers and reported the total respirable dust concentration and the RCS concentration. The techniques used were X-ray diffraction direct-on-filter, X-ray diffraction with deposition, infrared direct-on-filter, and infrared with potassium bromide (KBr) discs. The experiments were carried out in four different industries (enamel, sand extraction, foundry and brickworks). Generally, the SKC Conductive black Plastic sampler is oversampled (y = 1.52x + 0.008) and the CIP10 is undersampled (y = 0.74x + 0.068) when compared with the median air concentration. A pair-wise comparison of the different industries using t-tests indicated significant differences (P < 0.05) between the SKC Conductive Plastic samplers and the other samplers. The same series of statistical calculations were performed for the results obtained for RCS (quartz) and showed significant differences for the CIP10 techniques and the SKC Conductive Plastic cyclone analyses when using a polyvinylchloride filter.
Tao Zhang - One of the best experts on this subject based on the ideXlab platform.
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experimental analysis of an internally cooled heated liquid desiccant dehumidifier regenerator made of thermally Conductive Plastic
Energy and Buildings, 2015Co-Authors: Tao Zhang, Jingjing JiangAbstract:Abstract Internally-cooled dehumidifiers that use liquid desiccant are supposed to be superior to the adiabatic type in terms of solution flow rate, device volume, etc. In the present study, an internally-cooled dehumidifier made of thermally Conductive Plastic was designed, and it achieved superior corrosion resistance. Its performance was investigated both experimentally and through simulation. An experimental chamber was built for this internally-cooled dehumidifier, and the experimental results in different working conditions were obtained using a lithium bromide (LiBr) aqueous solution. Performance indices including the moisture removal rate, dehumidification/regeneration efficiency, and volumetric mass transfer coefficient were analyzed in conjunction with the inlet parameters. Compared with the internally-cooled dehumidifiers made of metal materials described in the literature, the present analysis indicates that this Plastic dehumidifier demonstrated comparable heat and mass transfer performance, providing a feasible approach for an internally-cooled process. In addition, with the help of the experimental results, a numerical model was built and validated for this internally-cooled dehumidifier using liquid desiccant.
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Experimental analysis of an internally-cooled/heated liquid desiccant dehumidifier/regenerator made of thermally Conductive Plastic
Energy and Buildings, 2015Co-Authors: Jun Liu, Tao Zhang, Xiaohua Liu, Jingjing JiangAbstract:Abstract Internally-cooled dehumidifiers that use liquid desiccant are supposed to be superior to the adiabatic type in terms of solution flow rate, device volume, etc. In the present study, an internally-cooled dehumidifier made of thermally Conductive Plastic was designed, and it achieved superior corrosion resistance. Its performance was investigated both experimentally and through simulation. An experimental chamber was built for this internally-cooled dehumidifier, and the experimental results in different working conditions were obtained using a lithium bromide (LiBr) aqueous solution. Performance indices including the moisture removal rate, dehumidification/regeneration efficiency, and volumetric mass transfer coefficient were analyzed in conjunction with the inlet parameters. Compared with the internally-cooled dehumidifiers made of metal materials described in the literature, the present analysis indicates that this Plastic dehumidifier demonstrated comparable heat and mass transfer performance, providing a feasible approach for an internally-cooled process. In addition, with the help of the experimental results, a numerical model was built and validated for this internally-cooled dehumidifier using liquid desiccant.
Maria Forsyth - One of the best experts on this subject based on the ideXlab platform.
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Conductive Plastic crystal phases of the 1-alkyl-2-methyl pyrrolinium TFSA salts
Solid State Ionics, 2002Co-Authors: Jiazeng Sun, Douglas R Macfarlane, Maria ForsythAbstract:Characterization of a new family of salts, based on a number of 1-alkyl-2-methyl pyrrolinium cations and the bis(trifluoromethane sulfonyl) amide anion (TFSA), is presented. From the thermal analysis, conductivity and X-ray diffraction (XRD) measurements, at least one of the compounds of the family, 1-ethyl-2-methyl pyrrolinium TFSA, was found to exhibit Plastic crystal phases before melting and to exhibit high conductivity in the solid state (1×10−4 S cm−1 at 25 °C). This Plastic crystal behaviour is discussed in comparison with other members of this pyrrolinium salt family.
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pyrrolidinium imides a new family of molten salts and Conductive Plastic crystal phases
Journal of Physical Chemistry B, 1999Co-Authors: Douglas R Macfarlane, P Meakin, Jiazeng Sun, Nahid Amini, Maria ForsythAbstract:A new family of molten salts is reported, based on the N-alkyl, N-alkyl pyrrolidinium cation and the bis(trifluoromethane sulfonyl)imide anion. Some of the members of the family are molten at room temperature, while the smaller and more symmetrical members have melting points around 100 °C. Of the room-temperature molten salt examples, the methyl butyl derivative exhibits the highest conductivity; at 2 × 10-3 S/cm this is the highest molten salt conductivity observed to date at room temperature among the ammonium salts. This highly Conductive behavior is rationalized in terms of the role of cation planarity. The salts also exhibit multiple crystalline phase behavior below their melting points and exhibit significant conductivity in at least their higher temperature crystal phase. For example, the methyl propyl derivative (mp = 12 °C) shows ion conductivity of 1 × 10-6 S/cm at 0 °C in its higher temperature crystalline phase.
Chandrashekar Raman - One of the best experts on this subject based on the ideXlab platform.
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Thermally Conductive Plastics for Enhanced Thermal Management
2015Co-Authors: Chandrashekar RamanAbstract:Electronic devices continue to shrink while continuing to offer increasing functionality. This trend poses a significant challenge to design engineers who need to adequately address the increasing thermal management requirements of these devices on a shrinking footprint. Thermally Conductive Plastics have been gaining attention as an innovative new material option to address this challenge. While Plastics are typically poor conductors of heat, it is possible to increase the thermal conductivity with the use of certain additives. Unique ceramic additives like boron nitride offer the added advantage of enabling thermally Conductive Plastic formulations that are also electrically insulating. The replacement of aluminum heat sinks in free (natural) convection environments with thermally Conductive Plastics is discussed in this paper. The results show it may indeed be possible to replace aluminum with thermally Conductive Plastic heat sinks in convection limited environments, and if judicious redesign of the p...
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Thermally Conductive Plastics for Enhanced Thermal Management
International Symposium on Microelectronics, 2015Co-Authors: Chandrashekar RamanAbstract:Electronic devices continue to shrink while continuing to offer increasing functionality. This trend poses a significant challenge to design engineers who need to adequately address the increasing thermal management requirements of these devices on a shrinking footprint. Thermally Conductive Plastics have been gaining attention as an innovative new material option to address this challenge. While Plastics are typically poor conductors of heat, it is possible to increase the thermal conductivity with the use of certain additives. Unique ceramic additives like boron nitride offer the added advantage of enabling thermally Conductive Plastic formulations that are also electrically insulating. The replacement of aluminum heat sinks in free (natural) convection environments with thermally Conductive Plastics is discussed in this paper. The results show it may indeed be possible to replace aluminum with thermally Conductive Plastic heat sinks in convection limited environments, and if judicious redesign of the Plastic heat sink is incorporated, an improved thermal management solution can be realized. Additionally, the benefits of enhancing existing Plastic housings to enable an improved thermal management solution are discussed. The results also show that modest enhancements to the thermal conductivity of existing Plastic housings can yield significant improvements to the overall thermal management solution as well.
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thermally Conductive Plastic compositions extrusion apparatus and methods for making thermally Conductive Plastics
2013Co-Authors: Chandrashekar Raman, Bei Xiang, Anand MurugaiahAbstract:A thermally Conductive filler composition and a resin composition comprising such filler compositions. The filler composition comprises a blend of a boron nitride, a metal oxide, and a silane. The filler composition can further comprise other filler components including, for example, glass fiber or glass flake. The filler compositions can be added to a resin composition to provide a thermally Conductive resin such as, for example, a thermally Conductive Plastic.