01 · Air purification & treatment

UVC / UVO Sterilization

Germicidal and photolytic UV for coils, ducts, and kitchen exhaust.

Overview

What it does

Flow Dynamics supplies UV-C coil disinfection and in-duct UV systems for AHUs across the UAE. UV-C systems use 254 nm germicidal ultraviolet light to inactivate bacteria, viruses, and mould on cooling coils and in moving airstreams. UV-O (ozone-generating) lamps add 185 nm output to break down grease molecules in kitchen ducts, reducing fire risk and odor. Both technologies are chemical-free, require no consumables beyond lamp replacement, and operate continuously while the HVAC system is running, a strong match for hospitals, food plants, and any Gulf building where coil biofilm or greasy duct build-up is a chronic issue.

How it works

The working principle

UV-C lamps are mounted downstream of the cooling coil so the lamp shines directly on the coil face and drain pan, continuously sterilising the wetted surfaces where biofilm would otherwise grow. In-duct UV-C arrays sterilise moving air, effective dose depends on air velocity, lamp wattage, and reflective duct lining. For kitchen exhaust, UV-O lamps installed in the hood plenum emit a mix of 254 nm (germicidal) and 185 nm (ozone-generating) light: the 185 nm photons crack grease molecules into smaller fragments, and the produced ozone oxidises them further downstream in the duct.

Applications

Where it's used

Typical installations across the UAE and wider Gulf include:

Hospital and clinic air handling units
Food processing and dairy facilities
Cooling coil and drain pan sterilization
Commercial kitchen duct de-greasing (UV-O)
Pharmaceutical cleanroom return air
Pharmaceutical and laboratory exhaust

Specifications

Technical data

Indicative ranges, exact specifications are confirmed per project on selection.

Lamp type	Low-pressure amalgam UV-C / UV-O
Wavelengths	254 nm (C), 185+254 nm (O)
Lamp life	9,000–16,000 hours typical
UV output	40–200 μW/cm² at 1 m (varies)
Safety	Door interlock + UV viewports
Mounting	Coil-face, in-duct, or hood plenum

Universal UV Solutions · USA Flow Dynamics supplies equipment from this manufacturer. We do not act as authorised representative unless explicitly stated in a specific project supply agreement.

Component teardown

Inside the machine.

Every component, taken apart. Select a marker to identify each part, or open the full teardown.

UVC / UVO Sterilization, exploded into its main components

FAQ

Common questions

What does UV-C on a cooling coil actually achieve?

It keeps the coil face and drain pan continuously sterile, stopping the biofilm that degrades heat transfer and seeds odour. Operators typically see cooling performance recovered and chemical coil cleaning eliminated.

Is UV-O safe for kitchen exhaust ducts?

Yes when engineered correctly: the lamps sit inside the hood plenum and duct, the ozone reacts with grease inside the ductwork, and interlocks shut the system down if a door is opened. It is an established de-greasing and fire-risk reduction technology.

How many lamps does my AHU need?

Send us the application, airflow or demand figures, and any consultant specification. Our engineers reply with a defended selection, datasheets and submittal documentation. Sizing is always confirmed by an engineer, never by a web calculator.