Fuzzy inference method for superheat online optimization in vapor compression air-conditioning system balancing energy-saving and stability

IF 6.9 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2025-06-25 DOI:10.1016/j.applthermaleng.2025.127304

Ce Zhang , Minxia Li , Zhigang Wu , Chaobin Dang , Xiuming Li , Zongwei Han , Rui Zhang , Zhenguo Chen

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引用次数: 0

Abstract

Superheat is the crucial controlled index of vapor compression air-conditioning system. Too low superheat will cause the compressor liquid hammer problem and reduce the system life. Too high superheat will reduce the heat exchanger area and affect the system energy efficiency. In this study, a novel online superheat optimization method is proposed. The construction process of the novel method is based on the minimum temperature superheat theory and fuzzy mathematics theory. The application process of the novel method does not require offline experimental data and is universal. Based on the novel method, the system can dynamically adjust the superheat setting value to adapt to different working conditions. Taking the conventional constant superheat setting value method as the comparison object, the feasibility of the novel method is verified by experimental study. The results show that the novel method can effectively avoid the superheat oscillation problem under the step response experiment, and the coefficient of performance can be improved by more than 6.3 %.

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平衡节能与稳定的蒸汽压缩空调系统过热度在线优化的模糊推理方法

过热度是蒸汽压缩空调系统的重要控制指标。过低的过热度会引起压缩机液锤问题，降低系统寿命。过高的过热度会使换热器面积减小，影响系统的能效。本文提出了一种新的在线过热优化方法。该方法的构建过程基于最低温度过热度理论和模糊数学理论。该方法的应用过程不需要离线实验数据，具有通用性。基于该方法，系统可以动态调节过热度整定值，以适应不同工况。以常规的恒过热度设定值法为比较对象，通过实验研究验证了新方法的可行性。结果表明，该方法能有效避免阶跃响应实验下的过热振荡问题，性能系数提高6.3%以上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.