Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering最新文献_第5页

Innovation Design and Applications of Robotic Manipulators in Intelligent Manufacturing System 智能制造系统中机械臂的创新设计与应用

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering Pub Date : 2022-08-01 DOI: 10.11159/icmie22.002

Dan Zhang

引用次数: 0

Experimental Study on the Heating and Cooling Performance of a Vapor Injection Heat Pump Using Low-GWP Refrigerants 采用低gwp制冷剂的蒸汽喷射热泵制热制冷性能实验研究

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering Pub Date : 2022-08-01 DOI: 10.11159/htff22.148

H. Maeng, Jinyoung Kim, Yongchan Kim

引用次数: 0

Underground Car Park Smoke Management System Design Validation Using CFD Simulation: Car Fire Products Yields Rates system 基于CFD模拟的地下停车场烟雾管理系统设计验证:汽车火灾产品收益率系统

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering Pub Date : 2022-08-01 DOI: 10.11159/htff22.123

Yosiki Nakamura, M. Hajjawi

{"title":"Underground Car Park Smoke Management System Design Validation Using CFD Simulation: Car Fire Products Yields Rates system","authors":"Yosiki Nakamura, M. Hajjawi","doi":"10.11159/htff22.123","DOIUrl":"https://doi.org/10.11159/htff22.123","url":null,"abstract":"Smoke management systems design is very important as it affect saving human lives in case of fire. The majority of firerelated deaths are caused by smoke inhalation of toxic gases, only 30% of deaths are due to fire burns. Recently, a great attention has been given to smoke management systems design validation using CFD simulations to ensure its effectiveness and compliance with fire codes regulations. CFD smoke simulation usually conducted using the inert fire species transport model, in which the fire source values specified at the fire inlet are assumed to be equivalent to an actual car fire products generation rates. Nonetheless, with the lack of a comprehensive conclusion on actual car fire products generation rates in literature, fire codes usually specify a certain fuel to represent a car fire, such as polyurethane as per UAE fire code. Considering the aforementioned, this work reviews literature on both polyurethane and actual car fires products generation rates, in an effort to conclude a proper fire products generation rates for CFD smoke simulations. Furthermore, this study demonstrates the use of the concluded fire source values to validate an underground car park smoke management systems design of a residential tower in UAE. The design is validated in compliance with the UAE fire code regulations considering both fire products concentrations and visibility analysis. The simulation results shows considerable difference in smoke generation between actual car fire and polyurethane fire. Mainly due to polyurethane higher fire growth rate and soot generation rates. On the other hand, the results illustrate that the smoke management system design satisfies the fire code CO and CO2 concentrations limits, yet it failed to comply with the fire code visibility requirements when polyurethane was used as fire source.","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125488872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 Outlet Manifold Location of Liquid-Cooled Battery Thermal Management Systems on Pumping Power 液冷电池热管理系统出口歧管位置对泵送功率的影响

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering Pub Date : 2022-08-01 DOI: 10.11159/htff22.143

Kuuku-Dadzie Botchway, M. Shaeri

{"title":"The Effect of Outlet Manifold Location of Liquid-Cooled Battery Thermal Management Systems on Pumping Power","authors":"Kuuku-Dadzie Botchway, M. Shaeri","doi":"10.11159/htff22.143","DOIUrl":"https://doi.org/10.11159/htff22.143","url":null,"abstract":"Hydrothermal performances of two water-cooled thermal management systems (TMSs) for cooling lithium-ion batteries (LIBs) are compared through three-dimensional simulations of laminar flow and heat transfer in TMSs, as well as conduction heat transfer with volumetric heat generation inside the battery cell. Maximum cell temperature and temperature variation across the cell are used to evaluate thermal performances of TMSs. The TMSs are different from each other by location of outlet manifold. In the bottom outlet (BO) design, the outlet is located at the bottom of the TMS’s case, while in the middle outlet (MO) design, the outlet manifold is located at the middle of the TMS’s case. Both designs provide safe operational temperature for LIBs, although the thermal performance of BO design is slightly higher than that of the MO design. This is due to distribution of water over a larger surface area in the BO TMS compared with the MO TMS. To provide a better insight on practical applications of TMSs, their thermal performances are described based on pumping power. Due to a shorter path from the inlet to the outlet in the MO design, compared with the BO design, the pressure drop is lower in the MO TMS. As a result, at a given flow rate, the MO TMS operates with a lower pumping power compared with the BO TMS. The present study suggests that selecting an appropriate TMS highly depends on design priorities. If the main goal is to maintain the cell temperature as low as possible, the BO design is an effective TMS. If the design goal is to minimize the pumping power, the MO TMS is an effective cooling system.","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126189912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surrogate Model for the Prediction of the Performance of a Tubular Pulsated Heat Pipe 管状脉动热管性能预测的代理模型

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering Pub Date : 2022-08-01 DOI: 10.11159/htff22.151

Mouret Gaëlle, Ibrahim Mira, Becerril César, Cataldo Filippo

引用次数: 0

Experimental Study on Air-Side Heat Transfer Enhancement of Fin-Tube Heat Exchanger under Vibrational Conditions 振动条件下翅片管换热器空气侧强化换热实验研究

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering Pub Date : 2022-08-01 DOI: 10.11159/htff22.147

MinJoong Kim, Yongchan Kim

引用次数: 0

Investigation of the Effects of Process Parameters for Friction Stir Spot Welding of Thin Al 6061 Sheet 工艺参数对铝6061薄板搅拌摩擦点焊影响的研究

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering Pub Date : 2022-08-01 DOI: 10.11159/mmme22.138

Serkan Gündoğdu, O. Ertugrul, Ege Anıl Diler

{"title":"Investigation of the Effects of Process Parameters for Friction Stir Spot Welding of Thin Al 6061 Sheet","authors":"Serkan Gündoğdu, O. Ertugrul, Ege Anıl Diler","doi":"10.11159/mmme22.138","DOIUrl":"https://doi.org/10.11159/mmme22.138","url":null,"abstract":"Extended Abstract Friction Stir Spot Welding (FSSW) is an effective method of welding aluminum sheet that is utilized in a variety of applications [1]. Because of its numerous advantages, such as a high strength-to-weight ratio, aluminium alloys are widely utilized in the automotive and aerospace industries. However, when the aluminum sheet is thin, several difficulties may arise, such as the need for low heat input during welding to avoid sheet warping [2]. In such cases, the FSSW method outperforms other welding processes for welding thin sheets. These gains of the FSSW method are dependent on the process parameters. The most effective parameters in the welding of sheets using the FSSW method are rotational speed, weld plunge distance, and stirrer tip profile, and high-quality welded sheets can be produced by combining these parameters appropriately. Most studies on this issue in the literature have used aluminum sheets with a thickness of 2 mm or greater [3]. There have been few studies on the welding of thinner plates through using FSSW method [4]. For this reason, the welding of thin aluminum alloy sheets with a thickness of less than 2 mm using the FSSW method were investigated in this study. The effects of the different effective process parameters which including tool geometries, tool rotation, and plunge speed on the quality of welded aluminum sheets were evaluated. The most cost-effective method in welding studies is modelling or simulation, and the goal","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121209051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pulsating Heat Pipe: Operation in Nonlinear Regime 脉动热管:非线性状态下的运行

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering Pub Date : 2022-08-01 DOI: 10.11159/htff22.132

Alok Kumar, Suneet Singh, Nadeem Ahmed

{"title":"Pulsating Heat Pipe: Operation in Nonlinear Regime","authors":"Alok Kumar, Suneet Singh, Nadeem Ahmed","doi":"10.11159/htff22.132","DOIUrl":"https://doi.org/10.11159/htff22.132","url":null,"abstract":"The global attention toward miniaturization technologies puts compact electronic devices at the core of thermal management research. The high compact density electronic devices are very high heat-dissipating systems. The removal of this high heat flux is imperative to maintain the reliability and durability of these devices. Among many heat removal systems, Pulsating Heat Pipes (PHP) have shown both their standalone and hybrid utility. Their miniature size with wickless structure and performance in different operating conditions put them as a promising heat removing agent in small area applications, be it terrestrial or space. Despite their simple geometry, PHPs exhibit complex dynamical characteristics due to the multiphysics processes involved during the transient operation. The complex dynamics is not easy to explain while analyzing the system by the mathematical models, used to obtain operating characteristics. The interplay between the multiphysics interactions makes the system highly nonlinear, which is very sensitive to the initial conditions. Therefore, the fundamental problem lies in the understanding of the dynamics in the nonlinear regime. Nonlinear stability analysis has been carried out on a state-of-the-art model. The oscillatory behavior of the liquid slug is modeled similarly to the springmass system. The parameters related to several thermodynamic processes have been varied to capture the change in the dynamics using codimension one and two analyses. The system of non-linear differential equations, containing the conservation equations for the liquid slug and vapor plug separately, has been solved numerically using MATCONT. Bifurcation analysis shows the sudden changes in the dynamics while varying the parameters and the start-up operating conditions also match with the literature.","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115277769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Surface Roughness on the Diffusion Bonding of 2024 Aluminum Alloy 表面粗糙度对2024铝合金扩散结合的影响

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering Pub Date : 2022-08-01 DOI: 10.11159/mmme22.119

Pei-Ing Lee, Shih-Ying Chang, Yu-Kai Sun, T. Chuang

引用次数: 0

Thermal Performances of Multi-Layered Liquid Cold Plates 多层液体冷板的热性能研究

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering Pub Date : 2022-08-01 DOI: 10.11159/htff22.115

Andoniaina M. Randriambololona, M. Shaeri

引用次数: 0