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热价值论是为改进炉子操作和设计,以利于节约燃料、提高产量的理论。它针对简单化的热平衡理论评价了各种热能,说明了传热学的规律与热力学第二定律有本质的区别;它讨论了随气体引入换热装置的热量的热价值问题以及引入净热量的热价值问题。以气体、料块逆流换热为基础,导出一组气体——料块换热方程式;由此引出热价值定律,证明在换热装置的不同截面上,引入净热量依附于气体或料块,有不同的热价值。以气体热价值方程式为纲,对Q热负荷、生产率、理论燃烧温度、装料温度、传热系数、换热面和传热量等展开了讨论。又由换热方程式得到物料配给原理,为向炉子分配供热和装料提供了理论根据。用热价值定律解释了火焰长度和热分解对燃料热价值的影响。区别对待了炉体热损失的热价值;强调了热风的意义,认为热风没有得到应有的推广。评论了Б.И.Китаев等著的《坚炉热交换》,指出其实质是进一步简单化的热平衡理论。以高炉为例,拟定了高炉换热原则。
The theory of heat value is to improve the operation and design of the furnace in favor of saving fuel and increasing output. It evaluates all kinds of thermal energy according to the simplified theory of thermal equilibrium, and shows that the law of heat transfer is essentially different from the second law of thermodynamics. It discusses the thermal value of the heat introduced into the heat exchanger with the gas and the net heat Hot value issues. Based on the countercurrent heat exchange between gas and material, a series of gas-material heat exchange equations are derived. Based on this, the law of heat value is deduced, which proves that the introduction of net heat depends on the gas or material in different sections of the heat exchange device, There are different heat values. Taking the gas heat value equation as the key link, the heat load, productivity, theoretical combustion temperature, charging temperature, heat transfer coefficient, heat transfer surface and heat transfer were discussed. And by the heat transfer equation to get the principle of material rationing, to provide a theoretical basis for the distribution of heating and charging furnace. The law of heat value explains the effect of flame length and thermal decomposition on the fuel thermal value. Differentiated the heat value of the furnace heat loss; stressed the significance of the hot air, hot air that has not been due promotion. Comment on the “strong hearth heat exchange” by Б.И.Китаев, pointing out that its essence is the heat balance theory which is further simplified. Take the blast furnace as an example, draw up the principle of blast furnace heat exchange.