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An ideal point method adopting grey relational entropy to estimate life cycle cost with effectiveness of torpedo

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Journal of Harbin Institute of Technology(New Series) 2008年第4期15卷 491-493页

作者：梁庆卫宋保维 College of Marine Northwestern Polytechnical University

To making the decision of the developing blue prints,ideal point method was selected to estimate the life cycle cost with effectiveness of *** the same time,the concept of grey relational entropy of the grey system theory was adopted to compute the distance between each blue print and the ideal point(or negative ideal point).The blue print,nearest to the ideal point and farthest to the negative ideal point,is the best *** an example,four blue prints of torpedo were *** result indicates the practical value of this method.

关键词： torpedo life cycle cost effectiveness ideal point method grey relational entronv

life cycle Assessment and life cycle cost of Waste Management—Plastic Cable Waste

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Advances in Chemical Engineering and Science 2014年第2期4卷 221-232页

作者： Mats Zackrisson Christina Jonsson Elisabeth Olsson Energy and Environment Group Department of MaterialsSwerea IVF ABMolndalSweden

The main driver for recycling cable wastes is the high value of the conducting metal, while the plastic with its lower value is often neglected. New improved cable plastic recycling routes can provide both economic and environmental incentive to cable producers for moving up the “cable plastic waste ladder”. Cradle-to-gate life cycle assessment, LCA, of the waste management of the cable scrap is suggested and explained as a method to analyze the pros and cons of different cable scrap recycling options at hand. Economic and environmental data about different recycling processes and other relevant processes and materials are given. Cable producers can use this data and method to assess the way they deal with the cable plastic waste today and compare it with available alternatives and thus illuminate the improvement potential of recycling cable plastic waste both in an environmental and in an economic sense. The methodology applied consists of: cradle-to-gate LCA for waste material to a recycled material (recyclate);quantifying the climate impact for each step on the waste ladder for the specific waste material;the use of economic and climate impact data in parallel;climate impact presented as a span to portray the insecurities related to which material the waste will replace;and possibilities for do-it-yourself calculations. Potentially, the methodology can be useful also for other waste materials in the future.

关键词： Cable Recycling life cycle Assessment LCA life cycle cost LCC Economic Analysis Climate Impact Waste Recycling

The Use of life cycle cost Analysis to Determine the Most Effective cost of Installation High Voltage Undersea Cable Bali Strait

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Journal of Energy and Power Engineering 2012年第12期6卷 2082-2089页

作者： Ngapuli Sinisuka lqbal Felani Novrizal Erdiansyah Bandung Institute of Technology Bandung 40132 Indonesia National Electricity Company (PT. PLN (Persero)) Jakarta 12160 Indonesia

Indonesian National Electricity Company （*** （Persero）） has planned to install additional high voltage undersea cable for circuit llI and IV Java-Bali to fulfill electricity demand in Bali. This project was more prefered compared to building another power plant in Bali which could raise social and cultural resistance. life cycle cost method was used to complete the financial feasibility study to ensure if the project has economic benefit, and the asset would be used effectively and efficiently along its benefit period. In this paper, a life cycle cost will be simulated to analyze which alternative is the most profitable： installation circuit III and IV in 2012 or installation circuit III in 2012 and circuit IV in 2017 in accordance with load forecasting demand. This study is used to help the management to make a decision about the project.

关键词： Financial feasibility life cycle cost high voltage undersea cable installation.

An Investigation into the life cycle cost of a Typical Computer Numerical Control Machine

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International Journal of Plant Engineering and Management 1997年第2期2卷 32-38页

作者： Liang Gongqian Liu WanxiaSchool of Management Northwestern Polytechnic University Xi’an, 710072, Shaanxi, P.R.China

This paper relates to a typical computer numerical control (CNC) machine, model FDXNC 128, and analyzes the payoff period quantitatively and forecasts the future maintenance cost and the evaluation of the economic benefit by using life cycle cost (LCC) method and grey theory. The discussion shows conclusions that are beneficial to the production, management, and decision making of the enterprise.

关键词： numerical control machine life cycle cost benefit.

Tradeoff Analysis for RMS of Equipment Based Operation Availability and life cycle cost

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International Journal of Plant Engineering and Management 2010年第1期15卷 18-21页

作者： GENG Jun-bao JIN Jia-shan ZHANG Jun College of Naval Architecture and Power Naval University of Engineering Wuhan 430033 P.R. China

Reliability, maintainability, supportability （RMS） are the important performance indexes of equipment, which affect not only the availability, but also the life cycle cost （LCC） of the equipment. First discussed is the qualitative relation between reliability and LCC and the costs which may be used to enhance the reliability. Secondly, the factors that affect the maintainability are summarized, and if maintainability is advanced, the trend of the LCC is depicted. Thirdly, the qualitative relation between the supportability and LCC is described. Reliability, maintainability and supportability index all have a relation with the availability, so this paper presents the tradeoff for RMS indexes based on the availability calculation models and LCC models. On the condition that the availability value is not below the given value, the decision-making is optimal if the life cycle cost is the minimum value.

关键词： life cycle cost reliability maintainability supportability availability

life-cycle ASSESSMENT AND life-cycle cost AS COLLABORATIVE TOOLS IN RESIDENTIAL HEATING SYSTEM SELECTION

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Journal of Green Building 2010年第3期5卷 107-115页

作者： Scott Glick Angela A.Guggemos Colorado State University Department of Construction Management1584 Campus DeliveryFort CollinsCO80523-1584

Typically the selection of a residential heating system focuses on first costs rather than the economic or environmental life cycle *** use of life cycle assessment and life cycle cost methodologies in the design phase provide additional criteria for consideration when selecting a residential heating system.A comparative case study of a gas forced air and radiant solar heating system was conducted for a 3,000 square foot house located in Fort Collins,Colorado,*** initial results of an analysis of the life cycle assessment and the life cycle cost data indicated the gas forced air system was superior,both environmentally and *** data analysis pinpointed solar radiant system components for replacement in an effort to reduce both life cycle environmental emissions and *** analysis resulted in a hybrid radiant system using a high-efficiency gas-fired boiler,a choice that lowered both the solar radiant system’s costs and *** new system had slightly lower environmental impacts than both the gas forced air system and solar radiant *** the hybrid system had less impact on the life cycle cost with the hybrid system substantially more expensive then the gas-forced air alternative.

关键词： life cycle cost LCC life cycle assessment LCA residential heating systems

Analysis and Forecasting of the life cycle Labor cost of Aircraft Development

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Analysis and Forecasting of the Life Cycle Labor Cost of Air...

作者： Evgeny Maslennikov 上海交通大学

学位级别：硕士

The thesis aims to develop a model for an integrated calculation of the labor intensity and approbation of the methodology for calculating the labor intensity of *** study's main result was the construction of an algorithm and the development of an experimental model for an enlarged calculation of the labor intensity for the manufacture of an *** algorithm for calculating the labor intensity is a solution for managing the cost of an aircraft product,where there is a need to determine the labor intensity at all stages of design: conceptual,draft design(when choosing the leading structural and technological solutions),and detailed design when there is still no complete set of drawings and a complex technical process,but there are only specific initial data characterizing the ***,start-up aviation companies do not have a model for an integrated calculation of labor intensity at all design ***,this study can form the basis of the company's methodological base.

关键词： life cycle cost research and development labor intensity competitiveness assessment

Net Present Value Method: A Method Recommended by ISO 15686-5 for Economic Evaluation of Building life cycle costs

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World Journal of Engineering and Technology 2022年第2期10卷 224-229页

作者： Hao Xie Qiao Cui Yang Li Department of Architecture College of Jangho Architecture Northeastern University Shenyang China Department of Urban Planning College of Jangho Architecture Northeastern University Shenyang China

The publication of ISO 15686-5 is significant for studies related to the life-cycle costs of buildings. Among the many economic evaluation methods, the NPV method is recommended for use by this standard. This study explains the concept and method of PV, and then provides an explanation of the concept and method of NPV, and points out the limitations in the practical application of the method.

关键词： NPV ISO 15686-5 Building life cycle cost Economic Evaluation

Overall life cycle Comprehensive Assessment of Pneumatic and Electric Actuator

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Chinese Journal of Mechanical Engineering 2014年第3期27卷 584-594页

作者： ZHANG Yeming CAI Maolin School of Mechanical and Power Engineering Henan Polytechnic University School of Automation Science and Electrical Engineering BeihangUniversity

Pneumatic actuators and electric actuators have almost been applied to all manufacturing industries. The two kinds of actuators can replace each other in most fields, such as the point to point transmission occasion and some rotating occasions. However, there are very few research results about the advantages and disadvantages of two kinds of actuators under the same working conditions so far. In this paper, a novel comprehensive assessment method, named as overall life cycle comprehensive assessment （OLCCA）, is proposed for comparison and assessment of pneumatic and electric actuators. OLCCA contains mechanical properties evaluation （MPE）, life cycle cost analysis based on users （LCCABOU） and life cycle environmental impact analysis （LCEIA） algorithm in order to solve three difficult problems： mechanical properties assessment, cost analysis and environmental impact assessment about actuators. The mechanical properties evaluation of actuators is a multi-objective optimization problem. The fuzzy data quantification and information entropy methods are combined to establish MPE algorithm of actuators. Two kinds of pneumatic actuators and electric actuators with similar bearing capacity and similar work stroke were taken for example to verify the correctness of MPE algorithm. The case study of MPE algorithm for actuators verified its correctness. LCCABOU for actuators is also set up. Considering cost complex structure of pneumatic actuators, public device cost even method （PDCEM） is firstly presented to solve cost division of public devices such as compressors, aftercooler, receivers, etc. LCCABOU method is also effective and verified by the three groups of pneumatic actuators and electric actuators. Finally, LCEIA model of actuators is established for the environmental impact assessment of actuators. LCEIA data collection method and model establishment procedure for actuators are also put forward. With Simapro 7, LCEIA comparison results of six actuators can be obtaine

关键词： actuator mechanical properties evaluation life cycle cost public device cost even method life cycle assessment