Fuzzy Comprehensive Evaluation of System Performance for Vuilleumier Cycle Heat Pump Driven by Solar, Geo-Thermal and Biomass Energy

2014 ◽  
Vol 1008-1009 ◽  
pp. 1080-1083
Author(s):  
Ying Bai Xie ◽  
Xiao Dong Deng ◽  
Jin He Zhao
Keyword(s):  
Heat Pump ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Energy System ◽  
Biomass Energy ◽  
Coefficient Of Performance ◽  
Evaluation Indexes ◽  
Comprehensive Evaluation Method ◽  
Better Than

Vuilleumier cycle heat pump (VM) has highest efficiency among all heat driven cycle. In this paper, solar, geo-thermal and biomass energy are investigated as input thermal energy to driven VM cycle heat pump. Fuzzy comprehensive evaluation method is applied to evaluate system performances. Initial investment of the system (IS), system reliability (RS), environmental protection of system (EP), VM exergy efficiency (EE) and VM coefficient of performance (COP) are selected as main evaluation indexes. For all the three renewable input energy, system are scored good, solar driven is better than the other two.

Requirements Analysis on the Highway Emergency Resource Based on Fuzzy Comprehensive Evaluation

2012 ◽  
Vol 178-181 ◽  
pp. 2779-2783
Author(s):  
Tao Ge
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Qualitative And Quantitative Analysis ◽  
Analytic Hierarchy ◽  
Evaluation Indexes ◽  
Comprehensive Evaluation Method ◽  
Resource Requirements ◽  
Hierarchy Process ◽  
Emergency Resource

In order to allocate the highway emergency resources rationally, with the timeliness, importance, scarcity and capital occupancy of the emergency supplies used as evaluation indexes, this paper use the analytic hierarchy process to determine the weight of each index, and use fuzzy comprehensive evaluation method to evaluate the emergency resource demands. The paper provides a comprehensive evaluation of resource requirements for highway emergency resources ,such as the highway patrol car, sweeper truck, fire engines, medical vehicles and wrecker. Through qualitative and quantitative analysis, the results are rational,effective and more consistent with reality, on which can be based in emergency resource allocation.

Index System and Method of Evaluation to Sustainable Technology with Fuzzy Comprehensive Evaluation

2013 ◽  
Vol 448-453 ◽  
pp. 4429-4433
Author(s):  
Zhi Jin Xu ◽  
Yan Kui Song
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Sustainable Technology ◽  
Evaluation Indexes ◽  
Comprehensive Evaluation Method ◽  
Multi Level ◽  
Basic Characteristics ◽  
Method Of Evaluation ◽  
General Method

It is of great strategic significance for an enterprise, a trade and even a country to evaluate sustainable technology scientifically and rationally. The essay thinks sustainable technology is compatible and symbiotic with the scientific & technological, economic, social, human and natural environment systems, and thus it reaps comprehensive benefits continuously of economy, society, ecology and others. After have analyzed and clarified the basic characteristics of sustainable technology, the essay constructs correspondingly a system of 19 evaluation indexes to sustainable technology, and proposes a comprehensive evaluation method of sustainable technology with fuzzy comprehensive evaluation (FCE) which is scientific, rational, effective and widely applied. Through the multi-level and multi-operator models of FCE, the essay further analyzes the general method and procedure of comprehensive evaluation to sustainable technology with a practical example. Therefore, the essay solves preliminarily the urgent problem to evaluate sustainable technology in a scientific, rational, standardized and quantitative way.

scholarly journals IMAGE QUALITY ASSESSMENT OF HIGH-RESOLUTION SATELLITE IMAGES WITH MTF-BASED FUZZY COMPREHENSIVE EVALUATION METHOD

2018 ◽  
Vol XLII-3 ◽  
pp. 1907-1914 ◽  
Author(s):  
Z. Wu ◽  
Z. Luo ◽  
Y. Zhang ◽  
F. Guo ◽  
L. He
Keyword(s):  
High Resolution ◽  
Image Quality ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Fuzzy Evaluation ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Better Than

A Modulation Transfer Function (MTF)-based fuzzy comprehensive evaluation method was proposed in this paper for the purpose of evaluating high-resolution satellite image quality. To establish the factor set, two MTF features and seven radiant features were extracted from the knife-edge region of image patch, which included Nyquist, MTF0.5, entropy, peak signal to noise ratio (PSNR), average difference, edge intensity, average gradient, contrast and ground spatial distance (GSD). After analyzing the statistical distribution of above features, a fuzzy evaluation threshold table and fuzzy evaluation membership functions was established. The experiments for comprehensive quality assessment of different natural and artificial objects was done with GF2 image patches. The results showed that the calibration field image has the highest quality scores. The water image has closest image quality to the calibration field, quality of building image is a little poor than water image, but much higher than farmland image. In order to test the influence of different features on quality evaluation, the experiment with different weights were tested on GF2 and SPOT7 images. The results showed that different weights correspond different evaluating effectiveness. In the case of setting up the weights of edge features and GSD, the image quality of GF2 is better than SPOT7. However, when setting MTF and PSNR as main factor, the image quality of SPOT7 is better than GF2.

Analysis of Geological Disasters Economic Evaluation

2013 ◽  
Vol 444-445 ◽  
pp. 1751-1755
Author(s):  
Qing Hua Zhan ◽  
Shi Mei Wang
Keyword(s):  
Economic Evaluation ◽  
Evaluation Method ◽  
Statistical Data ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Geological Disasters ◽  
Multi Level ◽  
Basic Concepts

This paper first introduces the meaning and mission of the economic evaluation of geological disasters,as well as the basic concepts of different economic evaluation, and then discuss the methods of economic evaluation of geological disasters, including multi-level fuzzy comprehensive evaluation method and statistical data evaluation method, and gives the outlook of the economic evaluation of geological disasters.

Evaluation on the Suitability of Projects Linked to the Increase/Decrease in Urban and Rural Construction Land

2013 ◽  
Vol 295-298 ◽  
pp. 2493-2499 ◽  
Author(s):  
Jin Yang ◽  
Ya Xian Wu ◽  
Chao Xia
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Indicator System ◽  
Efficient Implementation ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Field Surveys ◽  
Construction Land ◽  
Comprehensive Evaluation Method ◽  
Rural Construction

An indicator system is established for the suitability of projects linked to the increase/decrease in urban and rural construction land based on the field surveys for the old areas to be dismantled in three administrative villages such as Niulandian Village, Tianjiagou Village and Nanchongsi Village of Tianchi Town in Lezhi County of Sichuan Province, and the fuzzy comprehensive evaluation method is used to evaluate indicators. The analysis of evaluation results provides reference for the efficient implementation of projects linked to the increase/decrease in urban and rural construction land.

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