一种实际热力系统参数优化方法(一)——等价变换定常态有限时间分析  

An Optimization Method for Actual Thermodynamic System Parameters (A) Equivalent Transformation Steady Finite-Time Analysis

作　　者：陈则韶[1] 李川[2] 

机构地区：[1]中国科学技术大学热科学和能源工程系,安徽合肥230027 [2]中国科学技术大学国家同步辐射实验室,安徽合肥230029

出　　处：《工程热物理学报》2016年第4期685-689,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51076147)

摘　　要：本文工作是一种实际热力系统参数优化方法的基础预备工作,首先通过等价变换方法,把有限热容热源和工质循环的实际热力系统变换为等价定温热源和等价内可逆卡诺循环热机模型,其次用定常态有限时间热力分析法,求解出热力系统的输出功率、效率、换热器总传热系数与工质的吸热、放热等效温度之间关系式,而后借助无量纲归一化方法给出热机输出功率与效率的关系图,本文工作为后篇的实际热力系统的参数优化提供了理论基础。An effective optimization method for actual thermodynamic system parameters was proposed in this study.An actual thermodynamic system with finite capacity heat source and reality working fluid cycle was equivalently transformed to an ideal model with constant temperature heat source and reversible Kano cycle.And steady finite-time thermodynamics analysis was applied to get the relationship between the output power,efficiency and total heat transfer coefficient with the equivalent temperature of hot/cold source.The normalized relationship figure between the output power and efficiency of heat engine was also given in article.This method provides a theoretical basis for parameters optimization of actual thermodynamic system.

关 键 词：热力学 等效温度 有限时间热力分析法 热力系统优化 

分 类 号：TK123[动力工程及工程热物理—工程热物理]