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在莱诺亚周期中转移不可逆转:FTT设计标准与 ε-NTU

Ricardo T Páez-Hernández¹, Juan Carlos Pacheco-Paez^2,3, Juan Carlos Chimal-Eguía⁴

¹Area de Física de Procesos Irreversibles, Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana, U-Azcapotzalco, Av. San Pablo No. 420, Col. Nueva el Rosario, Alcaldía Azcapotzalco, Ciudad de México C.P. 02128, Mexico.

Entropy (Basel, Switzerland)

|December 24, 2025

概括

这项研究使用有限时间热力学增强了莱诺尔循环,考虑了热传输损失和非内热膨胀. 当将大约60%的换热器面积分配到冷侧时,就能达到最佳性能.

科学领域:

热力学是一种热力学.
有限时间热力学 (FTT)
能源系统分析能源系统分析

背景情况:

列诺尔循环是一个基本的热力学循环.
传统分析通常假设理想条件,忽视现实世界的不可逆转性.
在循环中优化能源转换对于效率和可持续性至关重要.

研究的目的:

通过结合热传递不可逆性和非中热膨胀来扩展稳定流的列诺尔循环模型.
评估热交换机面积分配对循环性能的影响.
确定最佳运行条件,以最大限度地提高输出功率和热力学效率.

主要方法:

利用epsilon-NTU (ε-NTU) 形式主义来建模传热不可逆性的模型.
使用扩展器的内置非热扩张的热效率 (ηE).
执行参数扫描,以分析电导分区 (uL) 和总电导 (UT) 对循环性能的影响.

主要成果:

确定了净功率 (P) 与LL的单模曲线,表示不同的最大值.
发现功率,热效率 (η),功率效率 (EF),生态效率 (φ) 和第二定律效率 (ηII) 的最佳性能发生在 uL ≈ 0.6.6 附近.
证明特定的热交换机面积分配显著影响整体循环性能.

结论:

该研究为热回收和微发电系统提供了明确的设计指南.
热交换机面积的最佳分配 (约60%用于冷面) 可以最大限度地提高功率,效率和运动利用率.
扩展的莱诺尔循环模型提供了一个更现实的评估在不可逆转条件下的热力学性能.

关键词:

有界的生态功能有界的生态功能有效的功率效率是有效的功率.有限时间热力学有限时间热力学热导电性热导电性热导电性第二法是效率的第二法.稳定的流动莱诺瓦尔循环

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