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Articles 1 - 5 of 5
Full-Text Articles in Social and Behavioral Sciences
Influences Of Temperature And Grain Size On The Material Deformability In Microforming Process, Zhengyi Jiang, Jingwei Zhao, Haina Lu, Dongbin Wei, Kenichi Manabe, Xianming Zhao, Xiaoming Zhang, Di Wu
Influences Of Temperature And Grain Size On The Material Deformability In Microforming Process, Zhengyi Jiang, Jingwei Zhao, Haina Lu, Dongbin Wei, Kenichi Manabe, Xianming Zhao, Xiaoming Zhang, Di Wu
Faculty of Engineering and Information Sciences - Papers: Part A
This paper investigated the influences of temperature and grain size on the deformability of pure copper in micro compression process. Based on the dislocation theory, a constitutive model was proposed taking into account the influences of forming temperature, Hall-Petch relationship and surface layer model. Vacuum heat treatment was employed to obtain various grain sizes of cylindrical workpieces, and then laser heating method was applied to heat workpieces during microforming process. Finite element (FE) simulation was also performed, with simulated values agreed well with the experimental results in terms of metal flow stress. Both the FE simulated and experimental results indicate …
Development Of Microencapsulated Phase Change Material For Solar Thermal Energy Storage, Weiguang Su, Jo Darkwa, Georgios Kokogiannakis
Development Of Microencapsulated Phase Change Material For Solar Thermal Energy Storage, Weiguang Su, Jo Darkwa, Georgios Kokogiannakis
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper a novel microencapsulated phase change material (MF-3) has been developed and tested for solar assisted hot water storage systems. Even though the morphology of the sample was affected by the type of emulsifier used for fabrication it recorded the highest energy storage capacity of 126 kJ/kg with encapsulation efficiency of 97.4% as compared with other developed samples. For the purpose of assessing its thermal effectiveness it was theoretically evaluated in a compacted fixed bed TES unit and found to be capable of achieving a higher energy storage density as well as relatively smaller physical storage size than …
Heat Transfer Analysis Of An Integrated Double Skin Facade And Phase Change Material Blind System, Yilin Li, Jo Darkwa, Georgios Kokogiannakis
Heat Transfer Analysis Of An Integrated Double Skin Facade And Phase Change Material Blind System, Yilin Li, Jo Darkwa, Georgios Kokogiannakis
Faculty of Engineering and Information Sciences - Papers: Part B
In this study, the heat transfer in an integrated double skin facade (DSF) and phase change material (PCM) blind system has been theoretically analysed. Both heat transfer and airflow models with CFD methods have been developed for the integrated DSF and PCM blind system. Data from an existing typical DSF building have been obtained in order to define input parameters for the simulation exercise and validate the numerical models. The temperature and velocity fields in DSF with the PCM blind system has been predicted under overheating scenario using the ANSYS Workbench FLUENT software and been compared with case of conventional …
Thermal Performance Evaluation Of An Integrated Photovoltaic Thermal-Phase Change Material System Using Taguchi Method, Haoshan Ren, Wenye Lin, Zhenjun Ma, Wenke Fan
Thermal Performance Evaluation Of An Integrated Photovoltaic Thermal-Phase Change Material System Using Taguchi Method, Haoshan Ren, Wenye Lin, Zhenjun Ma, Wenke Fan
Faculty of Engineering and Information Sciences - Papers: Part B
This paper presents the performance evaluation of an integrated photovoltaic thermal (PVT) collector-phased change material (PCM) thermal energy storage (TES) system. The PVT collectors can generate both electricity and low-grade thermal energy during the daytime, and the thermal energy generated can be temporarily stored in the PCM TES unit and used for space heating during the night-time. Taguchi method and analysis of variance are used for the simulation design and data analysis, respectively. The thermal performance of the proposed system was evaluated in terms of the useful energy stored in the TES system. The results showed that the outlet air …
Restoration, Shannon M. Slaight-Brown
Restoration, Shannon M. Slaight-Brown
Theses and Dissertations
The marks I make in clay have different characteristics, and the physical mark of one’s fingertips or visual record of the hand is personal and intimate. This visible activity is the evidence of my constant presence and control within each object. Its repetitive meditation produces a private relief from my persistent anxieties. This exploration for me is not only visual, but also physical. This is the start of my infatuation with the idea of pattern. It has its own discrete visual language and modes of communication; and through my research I am developing a method of intercommunication.