Fluence Rate in UV Photoreactor for Disinfection of Water: Isotropically Radiating Cylinder

Table 2

The values of fluence rate. The transmittance of 10 mm thick water layer is 80%.

[mm]	[mm]	The ray-trace procedure	The integration by the Simpson method			The integration by the Chebyshev method
		[m^−1]	[m^−1]	[m^−1]	[m^−1]	[m^−1]	[m^−1]
−16.0	5.0	11.199	11.197	11.143	0.054	11.143	0.054
−16.0	10.0	11.373	11.358	11.143	0.215	11.143	0.215
−16.0	15.0	11.712	11.627	11.143	0.484	11.143	0.484
−21.0	5.0	7.499	7.499	7.482	0.018	7.489	0.018
−21.0	10.0	7.555	7.553	7.482	0.071	7.489	0.071
−21.0	15.0	7.653	7.641	7.482	0.160	7.489	0.160
−26.0	5.0	5.337	5.332	5.326	0.006	5.336	0.006
−26.0	10.0	5.352	5.350	5.326	0.024	5.336	0.024
−26.0	15.0	5.381	5.380	5.326	0.054	5.336	0.054
−31.0	5.0	3.944	3.940	3.938	0.002	3.948	0.002
−31.0	10.0	3.945	3.945	3.938	0.006	3.948	0.006
−31.0	15.0	3.951	3.952	3.938	0.014	3.948	0.014
−36.0	5.0	2.990	2.990	2.991	0.000	3.000	0.000
−36.0	10.0	2.990	2.990	2.991	−0.001	3.000	−0.001
−36.0	15.0	2.987	2.988	2.991	−0.002	3.000	−0.002
−41.0	5.0	2.314	2.315	2.316	−0.001	2.324	−0.001
−41.0	10.0	2.312	2.312	2.316	−0.004	2.324	−0.004
−41.0	15.0	2.307	2.307	2.316	−0.009	2.324	−0.009