Fuzzy Comprehensive Evaluation on Energy-Efficiency of Plant Boiler Based on Exergy Analysis

2014 ◽  
Vol 472 ◽  
pp. 1022-1026
Author(s):  
Jing Liu ◽  
Yu Bo Wang ◽  
Cheng Bing He ◽  
Ping Zhu

Currently, boiler efficiency evaluation system is always established on the method of heat balance based on the first law of thermodynamics as the main indicator, it is imperfect. Using Exergy method, which is based on the first and the second law of thermodynamics, not only focus on energy consumption, but also take the useful energy utilization levels into account, combined with evaluation of environmental indicators, the evaluation index system is established for energy-efficient of boilers. Then, in view of the structural characteristics of the index system, using fuzzy comprehensive evaluation method evaluates the energy efficiency of boilers. Finally, by using this evaluation method, energy efficiency was studied.

2013 ◽  
Vol 357-360 ◽  
pp. 2839-2844
Author(s):  
Li Ming Xia ◽  
Jun Jun Zheng

With the introduction of knowledge management into project management, this paper proposes a set of evaluation system for project performance based on knowledge management. The scope of evaluation is defined by the analysis of the relationship between knowledge management and the project, and under the guidance of establishing principle, establish the mapping relationship of knowledge management from the idea of balanced score card. Then determine the specific evaluation index combining with the whole implementation process of the project. Finally, use the analytic hierarchy process (AHP) and fuzzy comprehensive evaluation method (FCE) to establish a quantitative evaluation index system, which plays a role to guide the practice of the project.


2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Tong Zou ◽  
Yikun Su ◽  
Yaowu Wang

As an important component of urban construction, the development of the community is of great significance to the sustainable construction of the entire society. The previous studies mainly focused on quantitative research and were limited by the data collectability, affecting the scientificity of the index system. Therefore, based on the theory of sustainable development, through the review of previous literature, combined with relevant experts' opinions and community development goals and other factors, a qualitative evaluation index system for community sustainable development capacity was established. The ANP (analytic network process) method is mainly used to determine the weight of each indicator, and FCE (fuzzy comprehensive evaluation) is proposed to determine every indicator’s membership. Then the hybrid fuzzy evaluation is promoted to evaluate the selected community as the empirical study. In this paper, the indicator selection is not limited by objective factors, and the evaluation system is more accurate; the application of ANP method makes the results of weight more scientific; meanwhile, fuzzy comprehensive evaluation can be suitable for solving various nondeterministic problems. This study transforms qualitative research into quantitative research; it provides an effective evaluation method for local managers and decision makers to carry out community sustainable construction.


2012 ◽  
Vol 452-453 ◽  
pp. 726-730
Author(s):  
Yao Wu Wei

ERP (Enterprise Resource Planning) is a kind of advanced management method and ideological system, which is an effective tool to improve operating efficiency. In reference to the domestic and foreign relevant research results, this paper attempts to find a set of evaluation index system and method, which is suitable for small and medium-sized enterprises in China implementing ERP system performance evaluation according to characteristics. Then use AHP to determine each index weight and evaluate comprehensively ERP implementation performance of small and medium-sized enterprise employing the fuzzy comprehensive evaluation method. This can provide ERP project methodological guidance and help enterprise to carry out the scientific decision, improve the success rate of ERP implementation, and promote the process of ERP in our country popularity.


2013 ◽  
Vol 291-294 ◽  
pp. 2217-2221
Author(s):  
Hai Yan Wang ◽  
Wei Li ◽  
Xin Wei Du ◽  
Quan Ming Zhang ◽  
Song Ling Dai ◽  
...  

With integrated consideration of existing research on power grid development evaluation index system and requirements of power grid development diagnosis, a more comprehensive power grid development diagnostic index system is established from five aspects of power grid security and reliability, high efficiency, coordination, economics and social environment and more than 20 indicators. In addition, a new power grid development diagnostic evaluation method based on hierarchical analysis and multi-level fuzzy comprehensive evaluation is proposed in order to diagnose and assess power grid status quo and the actual level of development comprehensively, objectively and systematically ,which will help power grid enterprises conveniently to find the main reason of affecting the power grid and enterprise development and encourage enterprises to continuously improve the targeted improvement measures and the level of grid development.


2011 ◽  
Vol 148-149 ◽  
pp. 1543-1547
Author(s):  
Xiao Li ◽  
Li Liu ◽  
Qiang Li

The energy-saving technology of the transport is still in its infancy. It has some questions about the evaluation and the promotion. Which lead to excellent energy-saving technology turn into productive forces can not be timely. In this case. The paper establishes the energy-saving technology evaluation index system by the Delphi; and calculated the evaluation index weights of each factor by the AHP. Finally, the paper proposed the evaluation method of the energy-saving technology which based on fuzzy comprehensive evaluation.


2014 ◽  
Vol 1073-1076 ◽  
pp. 2852-2856
Author(s):  
Zhi Jin Xu ◽  
Yan Kui Song

The implemented performance of enterprise’s patent strategy is an important component to measure its comprehensive benefits. It is of strategic significance for an enterprise to evaluate objectively its implemented performance of patent strategy. From the perspective of sustainable development, according to the 4 aspects of creation, application, protection and management of patent, the essay constitutes preliminarily a comprehensive evaluation index system of the implemented performance of enterprise’s patent strategy which is composed of a set of 21 indexes on the basis of an amount of domestic and foreign literature survey, case study and expert consultation, and analyzes the evaluation model and method of implemented performance of enterprise’s patent strategy with the fuzzy comprehensive evaluation and through a real case. The essay thinks the constitution of evaluation index system should obey a series of basic principles of objectivity, systematization, science and conciseness and the evaluation in essence is multi-object, multi-factor and multi-layer. Therefore, it is effective and feasible to select the Fuzzy Comprehensive Evaluation method.


2012 ◽  
Vol 253-255 ◽  
pp. 1593-1597 ◽  
Author(s):  
Jian Long Yan ◽  
Yong Cheng ◽  
An Hu Zhang ◽  
Yun Gang Zhao

Highway collapse hazard is the combined result of many factors. Based on the formation mechanism of the road collapse hazard and main the factors, they are selected from three aspects of risk assessments master factor: the regional geological structure, slope characteristics, and regional environmental characteristics, also ultimately select the spacing of the joints, slope lithology, slope structure, slope height, slope gradient, rainfall (rainfall in 24 hours to ≥ 25mm of days), the vegetation coverage degree and earthquake strong eight main control factors, above all these factors, they established a road collapse hazard evaluation index system. Based on the fuzzy comprehensive evaluation method, it establishes a road collapse hazard evaluation model. Analytic Hierarchy Process is used to determine the evaluation index system of layers in index weight values. Risk index is based on the evaluation criteria. Finally, an empirical study of two highway projects instances.


2021 ◽  
pp. 1-12
Author(s):  
Xiaomin Liu ◽  
Haiyan Liu ◽  
Zheng Wan ◽  
Lifei Wang ◽  
Qiong Chen

Water resources is an important basic energy. The determination of weights is one of the important indexes in water resources evaluation system and reasonable allocation of weights is the key to quantitative evaluation. In order to establish a scientific evaluation index system of the influence of mining disturbance on water resources for purpose of a more reliable and effective evaluation result and realizing the protection of water resources system, a comprehensive evaluation system of water resources based on PSO-AHP model is proposed in the paper. Combined with the specific geological environment characteristics of mines, this paper establishes a four-level evaluation index system after identifying the factors affecting water resources and ecological environment. By applying the particle swarm optimization (PSO) to the analytic hierarchy process (AHP) and fuzzy comprehensive evaluation method, a PSO-AHP model and then a fitness function are constructed to solve and optimize the weight values in the evaluation index system, and the calculated weight values are checked by consistency checking method. The evaluation results suggest that the index system can accurately reflect the impact of mining on water resources and water ecological environment and etc., providing certain reference value for sewage resourcing and reducing the harmful effect on environment by sewage discharge.


2013 ◽  
Vol 438-439 ◽  
pp. 1952-1957
Author(s):  
Jie Li ◽  
Shao Wei Yang

In this paper, the preliminary study of fuzzy comprehensive evaluation for arterial highway is made, the multi-level evaluation index system is set up, the process and formula of fuzzy comprehensive evaluation are proposed, and the practical application is explained by examples. To evaluate the highway engineering feasibility study, some methods are applied such as fuzzy comprehensive evaluation, analytic hierarchy process, expert evaluation method, etc. Thus it provides objective evaluation for the related management department to achieve the goal of improve the quality of highway preliminary work.


2020 ◽  
Vol 143 ◽  
pp. 01034
Author(s):  
Miao Yang ◽  
Yang Zhao ◽  
Tiezheng Zhao

With the advancement of China's urbanization process, China's villages and small towns also begin to face a series of challenges such as ecological environment destruction, population outflow and aging. In order to better deal with these challenges, Zhejiang province issued the “Interim Measures for the Assessment and Acceptance of Environmental Comprehensive Improvement Actions in Small Towns in Zhejiang Province”. The document provides detailed environmental assessments of villages and small towns, but lacks economic and social assessments. This study introduced the performance evaluation system of landscape, it focuses on the sustainable development of the thought and the advantage of quantitative evaluation system, combined with“Interim Measures for the Assessment and Acceptance of Environmental Comprehensive Improvement Actions in Small Towns in Zhejiang Province”, to build a strong comprehensive evaluation index system. Then, the analytic hierarchy process (AHP) and fuzzy comprehensive evaluation method (FCE) are used to draw the conclusion. In this way, the direction of key construction in the next step of rural and small town development can be clarified to achieve better development of this region.


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