[火用]分析在稳态导热中的应用研究  

Applied study on one-dimension steady-state heat conduction with exergy

作　　者：高子龙[1] 

机构地区：[1]山东建筑大学热能工程学院,山东济南250101

出　　处：《节能》2017年第10期22-29,3,共8页Energy Conservation

摘　　要：针对平壁一维稳态导热问题开展了研究,通过时间参数τ建立了热流密度Φ与热量Q的函数关系,并对一维平壁稳态导热问题进行模型建立、量化与分析。进而得出火用函数的一般表达式与量化表达式以及以火用参数为基准的导热微分方程式。并且给出了其在实际背景下的应用分析。对导热微分方程式进行了分析,揭示了温差驱动与火用差驱动热量传递的异同,得出火用差驱动对热量传递具有力的效果,更好地体现了驱动力的概念。Paying attention to the one-dimension steady-state heat conduction based on flat wall. It builds the function relationship between heat flux density( Φ) with heat energy( Q), establishes the model about the one-dimension steady-state heat conduction,makes the model being quantitative,and dissects the model. The essay gets the exergy function and thermal conduction differential equation, and have many applied analysis on them. The differences between temperature difference drive and exergy distance drive on the heat transfer is pointed out. Find that the effect of force is obviously reflected on the exergy distance drive,which describes the concept of drive force better.

关 键 词：一維稳态导热 [火用]分布函数 导热微分方程式 烟差 

分 类 号：TK22[动力工程及工程热物理—动力机械及工程]