Flame Failures and Recovery in Industrial Furnaces: A Neural Network Steady-State Model for the Firing Rate Setpoint Rearrangement

Table 5

Fuel flow rate changes versus furnace load for economic operation evaluation.

Process load (kg/s)	Process load changes (%)	Fuel flow rate (kg/s)	Fuel flow rate changes (%)	Tube surface temperature (K)	Efficiency (%)
7.3190	−35	0.04351	−36.4075	674.5	74.32
7.882	−30	0.04742	−30.6928	675.9	75.49
8.445	−25	0.05126	−25.0804	677.1	76.47
9.008	−20	0.05489	−19.77	679.4	77.27
9.571	−15	0.05839	−14.659	680.4	77.94
10.134	−10	0.06182	−9.6463	681.6	78.53
10.697	−5	0.06519	−4.7208	683	79.05
11.26	Nominal	0.06842	Nominal	683.9	79.5
11.823	+5	0.07161	+4.6624	685.4	79.9
12.386	+10	0.07465	+9.1055	685.9	80.25
12.949	+15	0.07751	+13.2856	687.1	80.56
13.512	+20	0.08038	+17.4803	688.5	80.84
14.075	+25	0.08321	+21.6165	690	81.1
14.638	+30	0.08594	+25.6065	691.4	81.34