Chemical Engineering Research & Design最新文献

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Regeneration of metal-containing alkali-activated adsorbent granules from a field experiment 田间试验中的含金属碱活性吸附颗粒再生问题
IF 3.7 3区 工程技术
Chemical Engineering Research & Design Pub Date : 2024-11-17 DOI: 10.1016/j.cherd.2024.11.017
Nusrat Kabir , Jenna Finnilä , Johanna Laukkanen , Tero Luukkonen
{"title":"Regeneration of metal-containing alkali-activated adsorbent granules from a field experiment","authors":"Nusrat Kabir ,&nbsp;Jenna Finnilä ,&nbsp;Johanna Laukkanen ,&nbsp;Tero Luukkonen","doi":"10.1016/j.cherd.2024.11.017","DOIUrl":"10.1016/j.cherd.2024.11.017","url":null,"abstract":"<div><div>Alkali-activated materials have become an active research topic as adsorbents for wastewater treatment. However, their regeneration is studied less frequently. In the present study, granular alkali-activated adsorbents were prepared from metakaolin or blast furnace slag with an inclusion of commercial MgCO<sub>3</sub>/MgO/Mg silicate-rich mineral adsorbent. The granules were used in a field experiment to treat effluent from a closed mine site containing 4.3 mg/L Ni, 1.3 mg/L Mn, 0.5 mg/L Fe, and 0.6 mg/L Zn. The granule regeneration was compared with 0.3 M NaOH, 0.3 M NaCl, 0.03–1.5 M HNO<sub>3</sub>, 0.3 M CH<sub>3</sub>COOH, and 0.05 M EDTA-2Na solutions. The best-performing granule type was based on blast furnace slag with the commercial Mg-rich adsorbent and it could be regenerated effectively with 0.3 M HNO<sub>3</sub>. The adsorption performance of the granules improved upon repeated regeneration (cumulative adsorption amounts in the field experiment reaching up to 1.0 mg/g Ni, 0.3 mg/g Mn, 0.1 mg/g Fe, and 0.2 mg/g Zn per cycle) which was likely due to enhanced specific surface area (reaching up 160–190 m<sup>2</sup>/g while the initial values were 0.5–20 m<sup>2</sup>/g). The granules had a mass loss of 27 % and 9.5 % during the first and second regeneration cycle, respectively, which is likely the limiting factor in their continued reuse.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"212 ","pages":"Pages 485-492"},"PeriodicalIF":3.7,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental and kinetic study of pressurized CO2 gasification of biomass chars 生物质炭的加压二氧化碳气化实验和动力学研究
IF 3.7 3区 工程技术
Chemical Engineering Research & Design Pub Date : 2024-11-16 DOI: 10.1016/j.cherd.2024.11.016
Liang Ding , Suilong Wang , Xiaohui Li , Ting Bai , Zegang Qiu , Zhiqin Li , Zhiqing Wang , Yitian Fang
{"title":"Experimental and kinetic study of pressurized CO2 gasification of biomass chars","authors":"Liang Ding ,&nbsp;Suilong Wang ,&nbsp;Xiaohui Li ,&nbsp;Ting Bai ,&nbsp;Zegang Qiu ,&nbsp;Zhiqin Li ,&nbsp;Zhiqing Wang ,&nbsp;Yitian Fang","doi":"10.1016/j.cherd.2024.11.016","DOIUrl":"10.1016/j.cherd.2024.11.016","url":null,"abstract":"<div><div>Pressurized CO<sub>2</sub> gasification of biomass represents an effective approach for the utilization of biomass and the reduction of CO<sub>2</sub> emissions. The impact of CO<sub>2</sub> partial pressure on the gasification kinetics of biomass chars was examined on a pressurized thermogravimetric analyzer at temperatures between 750 and 950 °C and elevated pressures (up to 1 MPa). The findings demonstrated that the gasification rates of corn stalk char (CSC), toonasinesis sawdust char (TSC), and rice husk char (RHC) exhibited an increase with rising CO<sub>2</sub> partial pressure. The reaction order exhibited variability with respect to CO<sub>2</sub> partial pressure, gasification temperature, and biomass type. The reaction order associated with biomass char exhibited a higher value at the elevated CO<sub>2</sub> partial pressure range (0.25–1.0 MPa) relative to the low CO<sub>2</sub> partial pressure range (0.025–0.1 MPa). The <em>n</em>th-order model was employed to elucidate the gasification behaviors of biomass chars. The results indicated that the modified random pore model was successfully applied to model the gasification of CSC and TSC. The grain model was effective in predicting the gasification behavior of RHC. The gasification rates of the three biomass chars were accurately predicted by the Langmuir-Hinshelwood model at both low and high CO<sub>2</sub> partial pressures. This study presents information on the effect of CO<sub>2</sub> partial pressure on biomass char gasification and methods for predicting biomass char gasification under pressurized conditions.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"212 ","pages":"Pages 349-361"},"PeriodicalIF":3.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of Remazol Brilliant Blue R removal in batch and fixed bed column reactor systems by MnOx: Non-linear isotherm and kinetic modelling 研究 MnOx 在间歇式和固定床柱式反应器系统中去除雷马唑亮蓝 R:非线性等温线和动力学模型
IF 3.7 3区 工程技术
Chemical Engineering Research & Design Pub Date : 2024-11-16 DOI: 10.1016/j.cherd.2024.11.013
Aynur Yardımcı, Ozlem Tepe
{"title":"Investigation of Remazol Brilliant Blue R removal in batch and fixed bed column reactor systems by MnOx: Non-linear isotherm and kinetic modelling","authors":"Aynur Yardımcı,&nbsp;Ozlem Tepe","doi":"10.1016/j.cherd.2024.11.013","DOIUrl":"10.1016/j.cherd.2024.11.013","url":null,"abstract":"<div><div>Remazol Brilliant Blue R (RBBR) is a dye frequently used in the textile industry. Discharging industrial effluents containing dye residues could pose a risk to biological systems. In the present study, the removal of RBBR from aqueous solutions was tested using MnO<sub>x</sub> in both batch and continuous systems. The effects of various parameters, including the solution’s initial pH, the amount of MnO<sub>x</sub>, the initial RBBR concentration, and temperature on RBBR removal by MnO<sub>x</sub>, were investigated. The optimum pH and MnO<sub>x</sub> amount at an initial RBBR concentration of 50 mg/L and 30°C were pH 7 and 0.3 g/L, respectively, resulting in an RBBR removal efficiency of 94.43 %. The adsorption capacity was found to be 227.06 mg/g at an initial RBBR concentration of 100 mg/L, pH 7, and 30°C. The adsorption process best fit the non-linear Langmuir isotherm and Elovich kinetic models, with the least error distributions and it was characterized as exothermic and spontaneous. The activation energy value was calculated to be 92.06 kJ/mol. In the fixed bed column reactor, the equilibrium uptake (q<sub>e</sub>) was 196.30 mg at an RBBR concentration of 200 mg/L and a flow rate of 3.70 mL/min. The results imply that MnO<sub>x</sub> shows great promise for wastewater treatment contaminated with dyes.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"212 ","pages":"Pages 520-535"},"PeriodicalIF":3.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of microwave-based CO2 regeneration in a packed bed reactor for Direct Air Capture 基于微波的直接空气捕获填料床反应器中二氧化碳再生研究
IF 3.7 3区 工程技术
Chemical Engineering Research & Design Pub Date : 2024-11-16 DOI: 10.1016/j.cherd.2024.11.014
Rahim Boylu, Mustafa Erguvan, Shahriar Amini
{"title":"Investigation of microwave-based CO2 regeneration in a packed bed reactor for Direct Air Capture","authors":"Rahim Boylu,&nbsp;Mustafa Erguvan,&nbsp;Shahriar Amini","doi":"10.1016/j.cherd.2024.11.014","DOIUrl":"10.1016/j.cherd.2024.11.014","url":null,"abstract":"<div><div>This study investigates a microwave-assisted Direct Air Capture (DAC) application using Zeolite 13X to capture CO<sub>2</sub> from the atmospheric air in Tuscaloosa, Alabama. For the regeneration process, a mono-mode solid state microwave generator with E orientation cavity was applied to desorb CO<sub>2</sub> from the sorbent. The main purpose of this study is to explore microwave-based DAC system since there is no detailed parametric study which evaluates all desorption characteristics including temperature and microwave initial power effects on CO<sub>2</sub> productivity, regeneration efficiency, desorption kinetics, energy consumption, temperature homogeneity, adsorption, and desorption capacities. In order to investigate all these desorption characteristics, sixteen non-cycling and ten cycling experiments were performed. In non-cycling experiments, regeneration temperature and microwave initial power changed from 45 ℃ to 100 ℃ and from 5 W to 60 W, respectively. The results illustrate that energy consumption to desorb a kg of CO<sub>2</sub> can be as low as 60.37 MJ and 23.97 MJ for 100 % and 70 % regeneration, respectively. In cycling experiments, adsorption capacity of each experiment and the effects of 70 % desorption on the adsorption capacity of following experiments were analyzed at the lowest temperature and power conditions (45 ℃ and 5 W). It was found that 70 % desorption does not have significant effects on the adsorption capacity for the following cycles. This study also proves that complete CO<sub>2</sub> regeneration can be achieved even at low temperature and initial power values in 3100 seconds.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"212 ","pages":"Pages 391-404"},"PeriodicalIF":3.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Raschig Super-Ring PLUS a new 4th+ generation random packing Raschig Super-Ring PLUS 新的第 4+ 代随机填料
IF 3.7 3区 工程技术
Chemical Engineering Research & Design Pub Date : 2024-11-15 DOI: 10.1016/j.cherd.2024.11.020
Michael Schultes
{"title":"Raschig Super-Ring PLUS a new 4th+ generation random packing","authors":"Michael Schultes","doi":"10.1016/j.cherd.2024.11.020","DOIUrl":"10.1016/j.cherd.2024.11.020","url":null,"abstract":"<div><div>Raschig Super-Ring® PLUS is a new 4th+ generation packing with optimized geometry. It offers lower pressure drop and higher capacity compared to other high-capacity random packings. This comes without sacrificing efficiency and makes this new development ideal for grass root column designs with reduced vessel diameters or for revamp cases to maximize tower capacities. The key improvement of Raschig Super-Ring® PLUS comes from the design, i.e. by arranging a more open column cross-sectional area for gas and liquid flow. The principles for new random packing designs are disclosed in the text. Details of developments for modern random packings are described in the text for the first time. Rigorous testing at various institutes supports these claims detailed further in the text along with industrial applications.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"212 ","pages":"Pages 332-340"},"PeriodicalIF":3.7,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integrated emulsion liquid membrane process for enhanced silver recovery from copper-silver leached solution 从铜银浸出液中提高银回收率的一体化乳液膜工艺
IF 3.7 3区 工程技术
Chemical Engineering Research & Design Pub Date : 2024-11-13 DOI: 10.1016/j.cherd.2024.11.018
Izzat Naim Shamsul Kahar , Norasikin Othman , Shuhada A. Idrus-Saidi , Norul Fatiha Mohamed Noah , Nurul Danisyah Nozaizeli , Sazmin Sufi Suliman
{"title":"Integrated emulsion liquid membrane process for enhanced silver recovery from copper-silver leached solution","authors":"Izzat Naim Shamsul Kahar ,&nbsp;Norasikin Othman ,&nbsp;Shuhada A. Idrus-Saidi ,&nbsp;Norul Fatiha Mohamed Noah ,&nbsp;Nurul Danisyah Nozaizeli ,&nbsp;Sazmin Sufi Suliman","doi":"10.1016/j.cherd.2024.11.018","DOIUrl":"10.1016/j.cherd.2024.11.018","url":null,"abstract":"<div><div>Waste printed circuit boards (WPCBs) have become the major source of e-waste and offer the prospect of being a secondary resource. In this work, copper (Cu) and silver (Ag) from WPCBs leached solution were treated using the integrated emulsion liquid membrane (IELM) process. Almost complete Cu (39660 mg/L) and Ag (300 mg/L) were treated using the precipitation and ELM process, respectively. The Cu was removed and recovered as CuO nanoparticles using hydroxide precipitation at pH=8.34. Subsequently, the Cu-free WPCBs leached solution loaded with Ag was treated using the ELM process. The best optimum formulation for the stable ELM process was accomplished at 7.74 mM of Cyanex 302, 70.0 mM thiourea/2.5 mM HNO<sub>3</sub> and 1 % w/v of Span 80 as a carrier, synergistic stripping agent, and surfactant, respectively. For high recovery of Ag, the optimum condition was obtained at a treat ratio of 1:3.243 with 200 rpm agitation speed at 4.36 minutes of extraction time. Under these conditions, more than 95 % and 80 % of Ag were successfully extracted and recovered, respectively with an enrichment ratio of 5.2. Hence, it is of great significance that this IELM process is proposed for the treatment of WPCBs leached solution.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"212 ","pages":"Pages 434-444"},"PeriodicalIF":3.7,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effect of green hydrogen feed rate variations on e-methanol synthesis by dynamic simulation 动态模拟绿色氢气进料速率变化对电子甲醇合成的影响
IF 3.7 3区 工程技术
Chemical Engineering Research & Design Pub Date : 2024-11-12 DOI: 10.1016/j.cherd.2024.11.012
Viet Hung Nguyen, Arto Laari, Tuomas Koiranen
{"title":"The effect of green hydrogen feed rate variations on e-methanol synthesis by dynamic simulation","authors":"Viet Hung Nguyen,&nbsp;Arto Laari,&nbsp;Tuomas Koiranen","doi":"10.1016/j.cherd.2024.11.012","DOIUrl":"10.1016/j.cherd.2024.11.012","url":null,"abstract":"<div><div>Methanol is a promising fuel and important intermediate chemical in the transformation of renewable power to chemical products since it can be directly synthesized from captured CO<sub>2</sub> and electrolytic H<sub>2</sub>. However, the intermittency of renewable power generation poses challenges to green methanol production process design and operation, necessitating high operational flexibility to facilitate coupling with intermittent renewable power. In this study, a green crude methanol (a mixture of methanol and water from methanol synthesis) production process was dynamically modeled. The results show that the minimum load of the model is 20 %, with maximum allowable ramping rates of 3.25 %/minute for ramp-down and 2.10 %/minute for ramp-up between full and minimum load. The introduction of a standby mode, in which a make-up H<sub>2</sub> stream is supplied when electrolytic H<sub>2</sub> is unavailable, allows continuous operation of the process at the minimum load. With the constructed control structure, the model demonstrates that the process can effectively handle continuous variations of electrolytic H<sub>2</sub> input.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"212 ","pages":"Pages 293-306"},"PeriodicalIF":3.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancing mixing characteristics of MgCl2 solution within atomization nozzles: A computational fluid dynamics investigation of structural parameter 增强雾化喷嘴内氯化镁溶液的混合特性:结构参数的计算流体动力学研究
IF 3.7 3区 工程技术
Chemical Engineering Research & Design Pub Date : 2024-11-10 DOI: 10.1016/j.cherd.2024.11.007
Honglei Yu , Lihua Fan , Dexi Wang , Hanshuo Yang , Ze Gong , Yunlong Li
{"title":"Enhancing mixing characteristics of MgCl2 solution within atomization nozzles: A computational fluid dynamics investigation of structural parameter","authors":"Honglei Yu ,&nbsp;Lihua Fan ,&nbsp;Dexi Wang ,&nbsp;Hanshuo Yang ,&nbsp;Ze Gong ,&nbsp;Yunlong Li","doi":"10.1016/j.cherd.2024.11.007","DOIUrl":"10.1016/j.cherd.2024.11.007","url":null,"abstract":"<div><div>Efficient dispersion of MgCl<sub>2</sub> solution is crucial in saline lake industries. Understanding how structural variables influence atomization can improve nozzle design. This study uses Computational Fluid Dynamics (CFD) modeling to examine the effects of key structural parameters on MgCl<sub>2</sub> solution mixing in atomization nozzles. It focuses on the impact of liquid injection hole size, number of air injection holes, and mixing chamber length on the nozzle's fluid dynamics. The analysis covers variations in internal velocity and MgCl<sub>2</sub> volume fraction. Simulations show that increasing the liquid injection hole diameter reduces liquid flow resistance, while adding more air injection holes leads to a more uniform air distribution, though with a slight increase in atomization efficiency. A longer mixing chamber reduces gas phase velocity. Optimal mixing efficiency is achieved with 4 air injection holes, a 1.5 mm liquid injection hole, a 7 mm mixing chamber, a 2 mm nozzle outlet, 0.3 MPa inlet gas pressure, and an 80 L/h solution flow rate. This study provides insights into key parameters for improving performance and refining industrial applications.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"212 ","pages":"Pages 378-390"},"PeriodicalIF":3.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental investigation in a forced draft wet cooling tower using aluminum oxide nano particles 在强制通风湿式冷却塔中使用氧化铝纳米颗粒的实验研究
IF 3.7 3区 工程技术
Chemical Engineering Research & Design Pub Date : 2024-11-10 DOI: 10.1016/j.cherd.2024.11.010
Sampath Suranjan Salins , Shiva Kumar , Kota Reddy , Sawan Shetty , Ana Tejero-González
{"title":"Experimental investigation in a forced draft wet cooling tower using aluminum oxide nano particles","authors":"Sampath Suranjan Salins ,&nbsp;Shiva Kumar ,&nbsp;Kota Reddy ,&nbsp;Sawan Shetty ,&nbsp;Ana Tejero-González","doi":"10.1016/j.cherd.2024.11.010","DOIUrl":"10.1016/j.cherd.2024.11.010","url":null,"abstract":"<div><div>Cooling towers are used in industries to remove the excess heat produced by industrial processes and machineries. This cooling phenomenon and its rate can be improved by mixing it with the nanoparticles. The present work focuses on the design and construction of a counter flow forced draft cooling tower with the addition of aluminum oxide (Al2O3) nanoparticles with water to enhance heat &amp; mass transfer. Experiments are performed with the variation of the flow rate of water, water temperature, and the volume fraction of nanoparticles from 0 % to 2 % by volume fraction. The output parameters like coefficient of performance (COP), cooling characteristics coefficient (CCC), Rate of evaporation (ER), cooling tower efficiency &amp; range have been analyzed. Nanofluid properties like viscosity, density &amp; thermal conductivity for different volume fractions have been examined. It is observed that viscosity and thermal conductivity increased with an increase in volume fractions. Viscosity decreased whereas conductivity increased with temperature rise. Results obtained from cooling tower experiments indicated a maximum COP, CCC, ER, efficiency, and range equal to 7.12, 3.54, 3.95 g/s, 75.55 %, and 29.8ᵒC, respectively. For the various volume fractions studied, nanofluid with 2 % outperformed others with higher heat transfer rates and range values. For the 2 % volume fraction of the nanoparticles, make-up water requirements reduced by 76.19 % when it is compared to the normal water without the nanoparticles. Also, it is found that the cooling tower range, heat transfer rate, and efficiency increased by 10 %, 10.2 %, and 4.16 % when nanofluid concentration is varied from 0 % to 2 % by volume for the air velocity and water flow rate of 13 m/s and 3.5 Liters per minute (LPM) respectively.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"212 ","pages":"Pages 281-292"},"PeriodicalIF":3.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A re-optimized design of mesh-type transition zone for large-scale PEM fuel cells considering two-phase flow distribution 考虑两相流分布的大规模 PEM 燃料电池网状过渡区再优化设计
IF 3.7 3区 工程技术
Chemical Engineering Research & Design Pub Date : 2024-11-10 DOI: 10.1016/j.cherd.2024.11.004
Bin Wang , Weitong Pan , Zichao Hu , Guoyu Zhang , Longfei Tang , Xueli Chen , Fuchen Wang
{"title":"A re-optimized design of mesh-type transition zone for large-scale PEM fuel cells considering two-phase flow distribution","authors":"Bin Wang ,&nbsp;Weitong Pan ,&nbsp;Zichao Hu ,&nbsp;Guoyu Zhang ,&nbsp;Longfei Tang ,&nbsp;Xueli Chen ,&nbsp;Fuchen Wang","doi":"10.1016/j.cherd.2024.11.004","DOIUrl":"10.1016/j.cherd.2024.11.004","url":null,"abstract":"<div><div>The flow distribution in the Flow Field Plate (FFP) has a significant impact on the performance and durability of large-scale Proton Exchange Membrane (PEM) fuel cells. Most of the existing studies focused only on gas-phase flow, while the actual cell operation is gas-liquid two-phase flow. In this study, numerical simulations of single- and two-phase flow distributions are performed for three-dimensional FFPs. The Coefficient of Variation (<em>CV</em>), defined as the ratio between the standard deviation and the mean of the velocities in channels, serves as the indicator of flow uniformity. Firstly, the differences between gas- and two-phase flow distribution characteristics of the FFP with the combined-mesh-type transition zone we previously constructed are elucidated. Secondly, a re-optimized layout with horizontal mesh apertures in the distribution zone and the addition of horizontal mesh in the collection zone is proposed. The design philosophy and methodology based on the coupled flow and resistance regulation mechanism are elucidated. The single- and two-phase <em>CV</em> values are further reduced by 41.25 % and 6.05 %, respectively. Thirdly, the re-optimized structure is applied to different FFP geometries, including smaller development spaces and larger cell areas, where the superior effects on flow distribution are validated.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"212 ","pages":"Pages 217-229"},"PeriodicalIF":3.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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