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火焰炉炉膛热工作的基本方程式的经验式,是在整理实验数据的基础上确立的。它包括热负荷、单位热耗、炉膛废气温度等变量与炉子生产率之间关系的几个经验公式。 1.热负荷与生产率之间的关系 热负荷是影响炉子生产率的重要因素,但不是唯一的因素;除它之外,还有许多因素,所以,在讨论热负荷与生产率之间的关系时,我们始终假设其他各因素都保持不变,而且把炉子当作单纯的热工设备来对待,工艺因素完全未考虑在内。生产率和有效热是完全一致的,二者可以互相代替。 在这些假设条件下,理论和实践表明,炉子热负荷与生产率之间的关系并不是直线关系,而是如图7中所示的曲线,即热负荷Q随生产率户的变化[Q=f(P)]是一条向上翘起
The empirical formula of the basic equations for the thermal operation of the hearth furnace was established on the basis of the experimental data. It includes several empirical formulas for the relationship between heat load, unit heat loss, furnace exhaust gas temperature and other variables and furnace productivity. 1. RELATIONSHIP BETWEEN THERMAL LOAD AND PRODUCTIVITY Heat load is an important, but not the only factor that affects furnace productivity. There are many factors besides it, so when discussing the relationship between heat load and productivity, We always assume that all other factors remain unchanged, and the furnace as a mere thermal equipment to treat, process factors are not taken into account. Productivity and effective heat are exactly the same, the two can replace each other. Under these assumptions, theory and practice show that the relationship between furnace heat load and productivity is not linear, but rather the curve shown in Figure 7, ie the change in heat load Q with productivity households [Q = f ( P)] is a tilt up