【摘要】 (火用)平衡是(火用)分析方法的基本手段,本文介绍了工业炉(窑)(火用)平衡所用的重要概念和基本思想,以及可能遇到的主要理论性问题,并给出进行连续加热(火用)平衡所采用的实用计算公式。 本文针对工业炉(窑)内部(火用)损分布的计算问题,对于内部存在燃烧与传热两大环节的炉型,将能质引入(火用)平衡计算,提出了可逆传热物理模型。该模型运用(火用)分析方法基本原理,结合炉子热工特点,利用热力学状态函数方法,建立衡量实际传热不可逆程度的可逆传热样板。模型的物理意义明确,可求得传热不可逆(火用)损的分配。 最后,作者根据在热平衡与(火用)平衡计算中所遇到的问题,提出将热平衡计算基准温度统一于(火用)平衡基准的建议。更多还原

【Abstract】 In this paper the main concepts and fundamental ideas of exergy analysis relating to the cxcrgy balance of industrial furnaces are presented A few of the concrete problems about exergy analysis are discussed, and a set of Comparatively complete formulas applied fo exergy balance of cotinnuous reheating furnaces are suggested.In order to compute the distribution of exergy losses within the industrial furnaces, the concept about quality of energy is introduced into exergy balance computations, and then a physical model of reversible heat transfer is given for those type of furnaces within which combustion and heat transfer exist,so the formulas applied for computation of the exergy losses distribution within the furnaces are established, In the given model, the fundamental principles of exergy analysis, and the method about thermodynam-ic state functions are used, and a reversible heat transfer module in relevance to the thermal characteristics of the furnaces is constructed for evaluating the degree of irreversibilitg of actual heat transfer processes-The physical meaning of the model is clear, and with its help, problems about distribution of irreversible exergy looses due to heat transfer within the furnaces are solved.更多还原