A Complex Evaluation and Optimization Approach for Oxygen-Enriched Combustion Characteristics of Blended Fuels Based on Response Surface Methodology

Table 7

The confidence of the two equations for burnout temperature.

Factor	Parameter estimation	Degree of freedom	Standard deviation	95% confidence interval lower control limit	95% confidence interval upper control limit	Significant factor
Value	492.77	1	3.55	483.48	502.87
Oxygen concentration, A	−60.18	1	3.46	−64.35	−49.38	1.00
Heating rate, B	50.83	1	3.46	41.07	52.77	1.00
AB	−29.98	1	4.26	−42.66	−23.53	1.00
A^2	−13.73	1	5.18	−27.81	−2.64	1.12
B^2	−4.72	1	5.18	−15.86	6.832	1.12