Abstract
According to the energy consumption status of industrial heat exchanger in the whole life cycle, the energy efficiency evaluation index system of industrial heat exchanger is put forward firstly. Secondly, aiming at the complexity and fuzziness of energy consumption of industrial heat exchanger, the energy efficiency evaluation model of industrial heat exchanger based on fuzzy matter-element method is established by using fuzzy matter-element theory and combining the concept of Hemingway schedule. Finally, taking the shell-and-tube heat exchanger as an example, five shell-and-tube heat exchangers with different designs and materials were selected to analyze their energy consumption advantages and disadvantages. Via calculation and analysis, the optimal energy efficiency design of the shell-and-tube heat exchanger was obtained. At the same time, reference opinions were provided for the design and manufacture of the shell-and-tube heat exchanger.
Highlights
As one of the important equipments in industrial production, industrial heat exchangers are widely used in all industrial applications, including food and chemical processing, oil and gas industry, power generation industrial industries and one of the high energy-consuming equipments, which consume 13%-15% of industrial energy in industrial production [1]
The need for energy efficient and compact heat exchangers is clear in the market, At the same time, the energy efficient heat exchangers conforms to the national policy of energy saving and emission reduction, the actual situation of the industry and the urgent need at present
The method only considers the inherent properties of the heat exchanger itself, and lacks the control of energy efficiency throughout the whole life cycle of the heat exchanger; Zhu Jing et al [4] put forward the energy efficiency evaluation of heat exchanger based on the fuzzy comprehensive evaluation model
Summary
As one of the important equipments in industrial production, industrial heat exchangers are widely used in all industrial applications, including food and chemical processing, oil and gas industry, power generation industrial industries and one of the high energy-consuming equipments, which consume 13%-15% of industrial energy in industrial production [1]. All the energy efficiency evaluation indexes of heat exchanger established in this paper are qualitative indicators, and the evaluation results are subjective. This method is only used to evaluate the energy efficiency of heat exchanger, lacking guidance for energy-saving design and manufacture of heat exchangers; Vytautas Martinaitis et al [5] developed the application of energy analysis for assessing the performance of building mechanical systems. This article will start from the life cycle of heat exchange, taking a tube-andplate heat exchanger is as an example to establish an energy efficiency evaluation index system based on qualitative and quantitative. The evaluation results understand the advantages and disadvantages of energy efficiency in the design of tube-and-tube heat exchangers, so that they can be improved purposefully; On the other hand, users can compare the comprehensive performance of different heat exchangers and select the products that suit them
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