As shown in Fig. 4 by the solid lines for 20 and 50 t/h, respectively. Even when the dependence of T_eg on D_sh is weak, it is noteworthy that the stack temperature is raised as the steam power decrease. When the steam power is decreased
The three formulae, Eqs. (17), (18) and (22), based on the expected physical relations among the parameters, were obtained using the STAT VIEW commercial code , and are valid for steam power values ranging from 20 to 50 t/h and for stoichiometric ratios at the furnace exit, ∝_f from 1.2 to 1.6. All the experimental measurements were included in the statistical fitting process and the regression co efficients R^2 were always greater than 0.9.