What is the difference between exhaust hoods using Ultraviolet Light and Corona discharge ozone generators?

Posted: January 21, 2020

There is some confusion regarding the similarities and differences of kitchen exhaust hoods using ultraviolet light bulbs (UV-C) in the exhaust plenum and systems that are referred to as "corona discharge" that generate ozone.

Ultraviolet Light or UV-C is a type of bulb that has a very high intensity that allows it to break down organic compounds. UV has been applied in a variety of sterilization and water treatment applications for decades.

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What are UltraViolet lights in kitchen hoods used for and what outcome can I expect when using them?

Posted: September 26, 2019

Ultraviolet Lights or UV-C lights are a type of bulb that has a very high intensity that allows it to break down organic compounds. UV has been applied in a variety of sterilization and water treatment applications for decades. The wavelength varies by application. In the case kitchen exhaust systems, UV-C light is used to break down grease particles through two processes: photolysis and ozonolysis. The photolysis process breaks the molecular bond of grease whereas ozonolysis is a process that oxidizes the grease molecules.

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