UV intensity definition
UV intensity means the power passing through a unit area perpendicular to the direction of propagation. UV intensity is used in the UV Disinfection Guidance Manual (UVDGM) to describe the magnitude of UV light measured by UV sensors in a reactor and with a radiometer in bench-scale UV experiments.
Examples of UV intensity in a sentence
The simulations are optically thin so that all cells experience the same UV intensity at a given time.
The UV dose is calculated as follows: where D is UV dose Ws/cm², I is UV intensity W/cm² and t is exposure time (seconds) For a linear lamp, the UV intensity is inversely proportional to the radial distance from the lamp.
Before starting the system, it takes 3 to 5 minutes before the full UV intensity is reached.
The single stage exponential decay equation for microbes exposed to UV irradiation is as follows: where S is surviving fraction of initial microbial population, k is UV rate constant (cm2/µJ), I is UV intensity (µW/cm2) and t is time of exposure in seconds (1 Ws=1J).