传输过程最优构形特征及其证明

The method and concept of a heat-engine-like plant were extended to the generalized transport processes based on the analysis of configurational characteristics of reversible heat engine and heat-engine-like plant,and a better mathematical foundation was given.It was proven by means of the variational method that the transport coefficients equipartion was the basic characteristics of a linear transport process system which pursued entropy production minimization when the material was subjected to overall constraints.The new idea of optimum configurational characteristics was preliminarily verified.

燃气锅炉排烟热回收技术探讨

通过对天然气烟气特性的分析以及对冷凝式热效率的分析和计算得出,将排烟温度降低到露点温度以下对烟气进行余热回收有重要的实际意义;冷凝式换热器就是增设在天然气锅炉尾部的余热回收装置,可以将排烟中大量的能量加以回收利用,从而达到节能环保的效果。针对几种不同结构形式的冷凝换热器的传热效果、烟气阻力及腐蚀性等问题进行定性对比,对各种排烟余热回收技术进行综合探讨。