Papers by Keyword: Sustainability

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Authors: Hsuan Jui Chen, Che Ming Chiang, Chi Chang Chan, Chao Yang Huang
Abstract: The operation of BIPV case study aimed to the environmental effects of the architectural design on landscape, which estimated the usability between human behavior and renewable energy on the design management. The BIPV project was the landmark of the local city hall, when it was built in Tainan Country in 2005, and it was the first BIPV research model in Taiwan. The multifunction covered three aspects: renewable energy usage, green site planning and underground parking lot. The BIPV working system was a hybrid system, which used 219 pieces PV modules by glass-to-glass type, and had total PV capacity of 24.09kWp. In the PV renewable energy, the DMY data was from 1.42 to 1.82 (kWh/day/kWp) and the PR value was form 36.6%-49.2%. For consideration of each evaluated factors, the architectural esthetics and energy design of the BIPV research case was not perfectly balance in the project. The citizens could accept this modern urban park as a friendly design for usage. But the PV power efficiency, the excessive design and inexact distribution decreased its power performance too much. Ultimately, the research presented an intensely interesting data for Taiwan BIPV development between the PV industry and architectural design.
3020
Authors: Hui Wen Chuang, Hsien Te Lin
Abstract: For a community, to be ecological is the way forward to sustainability, and the first step is to avoid unnecessary trips for daily activities. Realizing the required service function of a community can provide the directions and contents to the community and the one in charged for improving the convenience of life, while allowing residents to reach those facilities by walking or biking, thus achieving the ecological goal of energy conservation. This study adopts the Delphi technique to screen the most important and basic service items of the service function for the urban and rural eco-communities, which are supposed to be accessible and easily reached. Furthermore, the study utilizes the Analytic Hierarchy Process (AHP) to get different weights of these service items for two kinds of communities. Results show that the facilities of daily life are the most basic and important category of the service function for both kinds of communities; elementary school and senior day care service is the most significant item that urban and rural eco-community must have, respectively.
6061
Authors: Nan Li
Abstract: This paper indicates that there are no more sustainable concerns and instructions about urban design in current China relative planning Code when using the principles of eco-design principles as a lens to critical thinking about site choice, land use, transportation, road system, architecture massing, and spatial urban form. Furthermore, it is very hard for urban designer to design a sustainable project. This can be mitigated by taking mixed land use, TOD (Transit-Oriented Development), and 3D (Three Dimension) design methods. However, to design a sustainable site, to build a high performance building, other eco-design issues such as water saving, energy efficiency, air quality improvement, 3R materials use, eco-landscape etc. must be considered carefully in future design. Sustainable thinking should be the guideline through the whole urban design process.
866
Authors: Ghazaleh Tajik, Amir Hossein Azadnia, Azanizawati Bt Ma'aram, Syed Ahmad H.S. Hassan
Abstract: Third-party reverse logistics providers (3PRLPs) selection has become an important logistics function which can help companies to maintain their competitive edge. Traditionally, companies solely considered economic aspects for selecting their 3PRLPs. However, due to increased pressure from different types of stakeholders regarding environmental and social issues in recent years, companies have been obliged to incorporate these issues in their logistics and supply chains functions. Although many studies have been conducted in the field of 3PRLPs selection, much less attention has been devoted to incorporating all three aspects of sustainability (social, environmental, and economic) in this field. In this research, a hybrid fuzzy multi-criteria decision-making (FMCDM) approach is proposed for selecting 3PRLPs while all three dimensions of sustainability were taken into account. Fuzzy analytic hierarchy process (FAHP) was used in order to weight the selected sustainability criteria and subcriteria. Then, fuzzy technique for order preference by similarity to ideal solution (FTOPSIS) was applied for determining the ranking of suppliers. The applicability of the proposed approach was tested in an electronic manufacturing company.
521
Authors: Claudio Ciancio, Claudia Varrese, Giuseppina Ambrogio, Luigino Filice, Roberto Musmanno
Abstract: Nowadays manufacturing companies have to face conflicting issues continuously. Solving this type of problem means finding solutions that ensure a fair compromise between different objectives. In this work, a porthole die extrusion is considered as a specific case study. Usually, the main objective of this process is to find the combination of input parameters that allow the product quality to be maximized. However, product quality is not the only variable that companies have to take into account. In fact, it is also necessary to design the process in an efficient and sustainable way in order to reduce process cost and environmental impact. To this purpose, in this study the conflicting aims of product quality maximization and energy assumption minimization are considered and optimized. To pursue this aim an experimental investigation was executed, in order to build a preliminary database. The decision variables are the profile thickness and the process velocity. During the tests, the punch was measured in order to quantify the absorbed power along with the environmental impact of the process for changing conditions. In the same way, the mechanical properties of the extruded profile were measured by means of a tensile test, in order to assess the product quality. To solve this kind of problem the use of multi-objective optimization techniques is required in order to find the set of Pareto optimal solutions from which a single configuration will be selected according to specific business needs.
79
Authors: Zu Peng Zhou, Qiu Yun Mo, Lian Cheng Qin
Abstract: Net energy (NE) output, external cost to society of emissions, total production costs, and the renewability of a fuel are four critical factors that should be taken into account while developing sustainable energy resource systems. For this purpose, a new indicator, CNERλ,(Cost of Net Energy taking into account the Renewability) is proposed in this paper. The mixture of 85% ethanol (derived from corn) and 15% gasoline by volume (E85) and conventional gasoline (CG) are selected as assessing cases for illustrating the application of the new indicator. The CNERλ of E85 is 0.885, i.e. 12.5% lower than that of CG. It is shown that E85 is a more sustainable option comparing with CG by using the novel assessment indicator.
360
Authors: Trond Furu, Rune Østhus, Jostein Søreide, Ole Runar Myhr
Abstract: The present paper describes an innovative methodology that has been developed for optimization of product properties, production costs, and environmental impact in fabrication of aluminium alloys. The main idea is to represent each operation along the process chain by predictive models, which include material, mechanical, cost, and sustainability models. A multi-objective optimization platform is used to combine the models into a common software environment, which allows fully automatic simulations. The optimization tool runs the models in iterations until user-defined acceptance levels on properties, costs, and sustainability indices are obtained. In this paper, the methodology has been applied for fabrication of 6xxx-series aluminium extrusions. As a demonstration of practical relevance, the software tool was used to optimize mechanical properties and electrical conductivity by manipulation of alloy chemistry, processing parameters, and microstructure characteristics like grain structure, precipitates, dispersoids, and solid solution concentrations. At the same time material and production costs, as well as CO2 emissions along the value chain were attempted to be kept at minimum levels.
625
Authors: Yasuo Kondo, M. Yamaguchi, Kenji Yamaguchi, S. Sakamoto
Abstract: We discussed the coolant composition which can guarantee both the excellent fluid abilities as the cutting fluid and the good treatability as the recyclable material toward the development of sustainable cutting fluid system. We prepared three distinctive coolants; amine-free (EX-102), mineral-oil and amine free (α-1000) and amine-containing (EM-L) coolants. All of the coolants have excellent emulsion stability for standing in the natural condition butα-1000 and EM-L showed a good anti-rust properties while EX-102 showed a rather poor anti-rust property for the cast iron chips. The vegetable oil has a rather poor stability in lubricating performance than that of the mineral oils and synthetic ester. The alkaline substances dissolved in the amine-free coolant can be separated by the surfactant treatment as well as the oil contents, while some alkaline substances, maybe di-ethanol amine, are still retained in the recovered water from the amine-containing coolant. The activated carbon treatment showed no significant change for all of the coolant. Amine-containing coolant forms no stable emulsion; the recovered water cant utilize as a diluents of newly water-soluble coolant while the amine-free coolants can form a stable emulsion to a certain extent. The most direct attack to make the cutting fluid sustainable would be developing a new emulsifier and corrosion inhibitor that can substitute for amine compounds and can show a good treatability like the amine-free cutting fluid.
12
Authors: Yuk Kuen Wong
Abstract: Sustainable development has evolved to address current-day environmental challenges which are global in nature. This paper outlines important as it recognizes that to be able to fully quantify the benefits of sustainable projects, one of the critical measures that needs to be taken into account is end user value and social perspective. This research will develop a framework to evaluate end users’ value perception and social factors of sustainable projects and empirically test this framework. The Framework will help to develop a program of sustainability and determine best practices for sustainable project development and elucidate critical environmental and social benefits with impact across the whole economy.
2860
Authors: Xiao Jiang Zhou, Xing Liu
Abstract: In the last 20 years, China has been in the radical change of urbanization. The cities have been growing fast through continual construction and demolition. This research focuses on the development of several cities in Southern Yangtze of China to investigate the change of the residents in their lifestyle, living attitude during the “demolition’’ and “construction” in the perspective of urban plan and environmental design. Through the experiments of design projects in urban plan and environmental design, solutions would be found for those disharmony problems occurred during the transition process of “demolition” and “construction”. The proposals, from both the tangible and intangible points of view, would be developed for the development of the cities and regroup of residents, as well as the reconstruction of new communities with extension of traditional custom.
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