Multi-index comprehensive evaluation method for organic Rankine cycle systems

Abstract

The invention discloses a multi-index comprehensive evaluation method for organic Rankine cycle systems. The method includes the steps that a waste heat recovery organic Rankine cycle multi-index evaluation index set with high applicability is established and completed, wherein the waste heat recovery organic Rankine cycle multi-index evaluation index set comprises the system safety environment friendliness and reliability performance index, the system thermodynamic performance index and the system economic performance index; the multiple evaluation indexes are hierarchically classified according to evaluation index attributes to form a complete evaluation and decision-making framework which comprises multiple hierarchies and reflects system performance from different perspectives; the basic weight of the evaluation indexes of all hierarchies of the organic Rankine cycle systems and the normalized weight of the same index of the different systems are determined based on an analytic hierarchy process, and multi-hierarchy comprehensive quantitative evaluation indexes are obtained through a fuzzy comprehensive evaluation method to achieve comprehensive evaluation and decision-making on different organic Rankine cycle systems. According to the method, the system safety environment friendliness and reliability performance, the system thermodynamic performance, the system economic performance and the like are comprehensively considered, and comprehensive evaluation and decision-making and targeted optimization can be developed on the systems.

Description

technical field [0001] The invention relates to the technical field of an organic Rankine cycle comprehensive evaluation and decision-making system for waste heat energy recovery and utilization based on analytic hierarchy process and fuzzy comprehensive evaluation, and specifically belongs to the technical field of thermal cycle technology. Background technique [0002] With the development of economy and society, the problems of energy shortage and environmental pollution are becoming more and more prominent. Carrying out energy saving and emission reduction is an effective way to alleviate these two problems. The recycling technology of waste heat (such as internal combustion engine waste heat and industrial waste heat, etc.) is of great significance for reducing energy consumption and greenhouse gas emissions. Among them, organic Rankine cycle power generation is an effective waste heat utilization method. [0003] At present, there are many researches on the organic Ra...

AI Technical Summary

Problems solved by technology

The single-index thermal performance optimization results without other system performance indicators (such as system economy and safety and environmental protection) as constraints often do not match the actual application situation, which limits the application of the system

It is difficult to make a comprehensive and scientific comprehensive evaluation and decision-making for different organic Rankine cycle systems only from the perspective of a single thermodynamic index

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