The Experts below are selected from a list of 9708 Experts worldwide ranked by ideXlab platform
Hongyu Huang - One of the best experts on this subject based on the ideXlab platform.
-
hydrophilic substance assisted low temperature lioh h2o based composite Thermochemical materials for thermal energy storage
Applied Thermal Engineering, 2018Co-Authors: Hongyu Huang, Noriyuki Kobayashi, Xixian Yang, Yu Bai, Mitsuhiro KubotaAbstract:Abstract Lithium hydroxide monohydrate was modified by impregnation method with hygroscopic materials, such as polyethylene glycol (PEG), lithium chloride (LiCl), 13X-zeolite and NaY-zeolite. The lithium hydroxide monohydrate particles were well dispersed into nanoscale as composed with 13X-zeolite and NaY-zeolite. These composite materials exhibited obviously improved heat storage capacity and higher hydration rate than pure lithium hydroxide monohydrate, and the introduction of hygroscopic materials leads to greatly decreasing of apparent activation energy for the Thermochemical Reaction process. It is probably due to that hydrophilic materials provide efficient hygroscopic Reaction interface and also show catalytic effect to the hydration Reaction. Among these Thermochemical materials, LiOH·H2O/13X-zeolite showed the lowest apparent activation energy (21.5 kJ/mol) and the highest heat storage density (1949 kJ/kg), which is 2.9 times higher than the pure lithium hydroxide after the same hydration time.
-
The effect of 3D carbon nanoadditives on lithium hydroxide monohydrate based composite materials for highly efficient low temperature Thermochemical heat storage
RSC Advances, 2018Co-Authors: Hongyu Huang, Noriyuki Kobayashi, Yugo Osaka, Haoran YuanAbstract:Lithium hydroxide monohydrate based Thermochemical heat storage materials were modified with in situ formed 3D-nickel-carbon nanotubes (Ni-CNTs). The nanoscale (5–15 nm) LiOH·H2O particles were well dispersed in the composite formed with Ni-CNTs. These composite materials exhibited improved heat storage capacity, thermal conductivity, and hydration rate owing to hydrogen bonding between H2O and hydrophilic groups on the surface of Ni-CNTs, as concluded from combined results of in situ DRIFT spectroscopy and heat storage performance test. The introduction of 3D-carbon nanomaterials leads to a considerable decrease in the activation energy for the Thermochemical Reaction process. This phenomenon is probably due to Ni-CNTs providing an efficient hydrophilic Reaction interface and exhibiting a surface effect on the hydration Reaction. Among the Thermochemical materials, Ni-CNTs–LiOH·H2O-1 showed the lowest activation energy (23.3 kJ mol−1), the highest thermal conductivity (3.78 W m−1 K−1) and the highest heat storage density (3935 kJ kg−1), which is 5.9 times higher than that of pure lithium hydroxide after the same hydration time. The heat storage density and the thermal conductivity of Ni-CNTs–LiOH·H2O are much higher than 1D MWCNTs and 2D graphene oxide modified LiOH·H2O. The selection of 3D carbon nanoadditives that formed part of the chemical heat storage materials is a very efficient way to enhance comprehensive performance of heat storage activity components.
Haoran Yuan - One of the best experts on this subject based on the ideXlab platform.
-
The effect of 3D carbon nanoadditives on lithium hydroxide monohydrate based composite materials for highly efficient low temperature Thermochemical heat storage
RSC Advances, 2018Co-Authors: Hongyu Huang, Noriyuki Kobayashi, Yugo Osaka, Haoran YuanAbstract:Lithium hydroxide monohydrate based Thermochemical heat storage materials were modified with in situ formed 3D-nickel-carbon nanotubes (Ni-CNTs). The nanoscale (5–15 nm) LiOH·H2O particles were well dispersed in the composite formed with Ni-CNTs. These composite materials exhibited improved heat storage capacity, thermal conductivity, and hydration rate owing to hydrogen bonding between H2O and hydrophilic groups on the surface of Ni-CNTs, as concluded from combined results of in situ DRIFT spectroscopy and heat storage performance test. The introduction of 3D-carbon nanomaterials leads to a considerable decrease in the activation energy for the Thermochemical Reaction process. This phenomenon is probably due to Ni-CNTs providing an efficient hydrophilic Reaction interface and exhibiting a surface effect on the hydration Reaction. Among the Thermochemical materials, Ni-CNTs–LiOH·H2O-1 showed the lowest activation energy (23.3 kJ mol−1), the highest thermal conductivity (3.78 W m−1 K−1) and the highest heat storage density (3935 kJ kg−1), which is 5.9 times higher than that of pure lithium hydroxide after the same hydration time. The heat storage density and the thermal conductivity of Ni-CNTs–LiOH·H2O are much higher than 1D MWCNTs and 2D graphene oxide modified LiOH·H2O. The selection of 3D carbon nanoadditives that formed part of the chemical heat storage materials is a very efficient way to enhance comprehensive performance of heat storage activity components.
Noriyuki Kobayashi - One of the best experts on this subject based on the ideXlab platform.
-
hydrophilic substance assisted low temperature lioh h2o based composite Thermochemical materials for thermal energy storage
Applied Thermal Engineering, 2018Co-Authors: Hongyu Huang, Noriyuki Kobayashi, Xixian Yang, Yu Bai, Mitsuhiro KubotaAbstract:Abstract Lithium hydroxide monohydrate was modified by impregnation method with hygroscopic materials, such as polyethylene glycol (PEG), lithium chloride (LiCl), 13X-zeolite and NaY-zeolite. The lithium hydroxide monohydrate particles were well dispersed into nanoscale as composed with 13X-zeolite and NaY-zeolite. These composite materials exhibited obviously improved heat storage capacity and higher hydration rate than pure lithium hydroxide monohydrate, and the introduction of hygroscopic materials leads to greatly decreasing of apparent activation energy for the Thermochemical Reaction process. It is probably due to that hydrophilic materials provide efficient hygroscopic Reaction interface and also show catalytic effect to the hydration Reaction. Among these Thermochemical materials, LiOH·H2O/13X-zeolite showed the lowest apparent activation energy (21.5 kJ/mol) and the highest heat storage density (1949 kJ/kg), which is 2.9 times higher than the pure lithium hydroxide after the same hydration time.
-
The effect of 3D carbon nanoadditives on lithium hydroxide monohydrate based composite materials for highly efficient low temperature Thermochemical heat storage
RSC Advances, 2018Co-Authors: Hongyu Huang, Noriyuki Kobayashi, Yugo Osaka, Haoran YuanAbstract:Lithium hydroxide monohydrate based Thermochemical heat storage materials were modified with in situ formed 3D-nickel-carbon nanotubes (Ni-CNTs). The nanoscale (5–15 nm) LiOH·H2O particles were well dispersed in the composite formed with Ni-CNTs. These composite materials exhibited improved heat storage capacity, thermal conductivity, and hydration rate owing to hydrogen bonding between H2O and hydrophilic groups on the surface of Ni-CNTs, as concluded from combined results of in situ DRIFT spectroscopy and heat storage performance test. The introduction of 3D-carbon nanomaterials leads to a considerable decrease in the activation energy for the Thermochemical Reaction process. This phenomenon is probably due to Ni-CNTs providing an efficient hydrophilic Reaction interface and exhibiting a surface effect on the hydration Reaction. Among the Thermochemical materials, Ni-CNTs–LiOH·H2O-1 showed the lowest activation energy (23.3 kJ mol−1), the highest thermal conductivity (3.78 W m−1 K−1) and the highest heat storage density (3935 kJ kg−1), which is 5.9 times higher than that of pure lithium hydroxide after the same hydration time. The heat storage density and the thermal conductivity of Ni-CNTs–LiOH·H2O are much higher than 1D MWCNTs and 2D graphene oxide modified LiOH·H2O. The selection of 3D carbon nanoadditives that formed part of the chemical heat storage materials is a very efficient way to enhance comprehensive performance of heat storage activity components.
Prodromos Daoutidis - One of the best experts on this subject based on the ideXlab platform.
-
language oriented rule based Reaction network generation and analysis description of ring
Computers & Chemical Engineering, 2012Co-Authors: Srinivas Rangarajan, Aditya Bhan, Prodromos DaoutidisAbstract:Abstract Applications of RING in the generation and analysis of complex Thermochemical Reaction networks are presented. Automated generation and topological network analysis features in RING allow for: (a) constructing Reaction networks exhaustively in a rule-based manner, (b) identifying dominant pathways in networks using estimates of kinetic parameters, (c) hypothesis and testing of mechanisms by comparing pathway results from RING with experimental data, and (d) predicting atom-efficient synthetic routes to valuable chemicals from known chemistries and commonly available chemicals. Case studies involving three chemical systems are used to demonstrate these features in RING: (a) acid-catalyzed propane aromatization, (b) glycerol and acetone dehydration on acid catalysts, and (c) C 4 –C 9 mono-alcohols synthesis from C 2 and C 3 oxygenates on acid, base, and metal catalyzed chemistries. Through these case studies, we demonstrate that RING can be used to postulate mechanisms and predict likely products for a given system, thereby guiding experimentation and computational analysis.
-
rule based generation of Thermochemical routes to biomass conversion
Industrial & Engineering Chemistry Research, 2010Co-Authors: Srinivas Rangarajan, Aditya Bhan, Prodromos DaoutidisAbstract:Biomass conversion to fuels and chemicals involves a multitude of oxygen-containing compounds and Thermochemical Reaction routes. A detailed elucidation of the process chemistry is, thus, a key step in understanding the Reaction mechanisms and designing chemical processes in a biorefinery. In this paper, a computational tool, called Rule Input Network Generator (RING), is presented as a platform for modeling diverse homogeneous and heterogeneous chemistries in biomass conversion and automatically generating the underlying complex Reaction networks. RING accepts a set of Reaction rules and initial reactants as inputs and exhaustively generates the Reactions of the system. The Reaction center of an elementary step is represented by a SMARTS-like string and identified as a submolecular pattern in a reactant molecular graph using a pattern-matching algorithm. The Reaction events are subsequently modeled as a graph transformation system. The generality of this framework was substantiated by the successful appl...
-
rule based generation of Thermochemical routes to biomass conversion
Industrial & Engineering Chemistry Research, 2010Co-Authors: Srinivas Rangarajan, Aditya Bhan, Prodromos DaoutidisAbstract:Biomass conversion to fuels and chemicals involves a multitude of oxygen-containing compounds and Thermochemical Reaction routes. A detailed elucidation of the process chemistry is, thus, a key ste...
Hongguang Jin - One of the best experts on this subject based on the ideXlab platform.
-
Solar-clean fuel distributed energy system with solar thermochemistry and chemical recuperation
Applied Energy, 2018Co-Authors: Taixiu Liu, Qibin Liu, Jing Lei, Jun Sui, Hongguang JinAbstract:Abstract A new solar-hybrid fuel-fired distributed energy system incorporating Thermochemical Reaction driven by mid- and low-temperature solar heat and exhaust heat is proposed, for increased solar energy utilization and exhaust heat recovery efficiency. Solar energy is upgraded to syngas (H2 and CO) chemical energy via the solar Thermochemical process of the methanol decomposition Reaction, and the syngas drives the internal combustion engine to output power. Some of the exhaust heat is stored and drives the methanol decomposition Reaction to supplement the syngas via the chemical recuperation process, enhancing the exergy efficiency of the exhaust heat recovery. The overall energy efficiency and net efficiency of solar energy to electricity conversion are improved by integrating solar thermochemistry and chemical recuperation, and excellent off-design thermodynamic performance under varying user loads and solar irradiation levels is achieved. The overall energy efficiency, exergy efficiency, and net solar-energy-to-electricity efficiency reach 80.55%, 42.18% and 24.66%, respectively. These research findings indicate that the proposed system embodies an efficient and stable approach towards utilization of solar energy and clean fuel in distributed energy systems.
-
performance investigation of a new solar hybrid fuel fired distributed energy system integrated with a Thermochemical process
Energy Procedia, 2017Co-Authors: Taixiu Liu, Qibin Liu, Jun Sui, Xiaohe Wang, Hongguang JinAbstract:Abstract A new solar-hybrid fuel-fired distributed energy system integrated with a Thermochemical Reaction driven by mid-and-low solar thermal energy and exhaust heat is proposed. The methanol is decomposed into the syngas (H 2 and CO) through the solar Thermochemical receivers/reactors, and the syngas drives an internal combustion engine to output power. Then a part of the exhaust heat is recovered and drives the methanol decomposition Reaction to supply the syngas via the chemical recuperation process. With the combination of the solar Thermochemical and chemical recuperation process, the solar energy and exhaust heat is utilized effectively. The thermodynamic performances of the proposed system are investigated, and the overall energy efficiency and net solar to electricity efficiency on the design condition reaches to 80.55% and 24.66%, respectively. The promising results provide an efficient and stable utilization approach of the solar energy and clean fuel in distributed energy systems.