UV Dose Calculation

Attenuation factor (ἡ) =1 (η ≤ )

4pi =12.56

Distance of object (r) =0.5 m

Number of UV bulbs =1

UV bulb Power =6

Power or wattage of

UV tube (P) =6 W

W/m2 to mW/m2 =0.1 (1 W/m2 = 0.1 mW/cm2)

Irradiance= P/ἡ4pi r^2

Ans: =1.911 W/m2

=0.19108 mW/cm2

Time =60 s

Dose = Irradiance x time (J/m^2 or mJ/cm2) (mW/cm2 x seconds = mJ/cm2 )

Ans =114.65 J/m2

=11.465 mJ/cm2

Time = (Dose / Irradiance)

Ans =60.00 s