Airverclean Products

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UVC for AHU (No Ozone)

The biggest challenges for the HVAC system are dirty cooling coils and drain pans, clog with mold, fungi, bacteria and other microbes. These microbes thrive in damp and wet surfaces and maintenance is an ongoing challenge.

The UVC lamps are installed downstream of the AHU’s cooling coils, irradiating the coils and drain pans, retarding the growth of these microbes, destroying them and keeping the coils clean!

Cleaner coils means better heat transfer, reducing energy costs and increasing the performance of the HVAC system with quick Return Of Investment within a year through energy savings derived.

UVC for AHU Application UVC Ducted Application

UV Resources

UVC Sterilizing Systems For AHU Cooling Coil

In this application UV Resources RLM UV-C series of products are arranged and installed behind the cool- ing coil of each AHU (Air Handling Unit). The Lamps are arrayed in such a way as to give maximum irradiance to the cooling coil surface. They are mounted on alumi- num frames and are powered remotely from a control box housing outside the AHU, out of the air stream.

This is a customized solution. Each AHU requires one control box, an appropriate number of lamps, de- pending on the size of the AHU.

Each lamp has a set of dry contact signal that can be linked to a Building Management System for moni- toring purposes.

Most UVC suppliers do not advise users the number of UVC lamps or wattage of lamps to be used to meet the guidelines set out in the 2011 ASHRAE Handbook. It states that UVC Intensity (striking the furthest point of the coil and drain pans) must be approximately 50- 100 microwatt/cm2. To meet this requirement, it is estimated that ONE Square Meter of cooling coil surface area requires 80 lamp watts or 7.5 Lamp watts per square foot of coil surface area.In short for every One Square Meter of surface coil area, a 33" (846mm) UVC High Output Lamp of approx 80 Lamp watts is required

This formula is the work of Mr Forrest Fencl (Distinguished Lecturer , from the early 2000s of ASHRAE Progamme)

Wall Mounted UVC

Upper Room Irradiation

UV energy is found in the electromagnetic spectrum between visible light and x-rays and is sometimes described as invisible radiation. Germicidal protection is delivered at 254 nanometers in the light spectrum and is known as UVC.

Its photons have just the right wavelength to physically destroy the DNA of microorganisms. It is a safe, tested technology that uses lamps, similar to fluorescent tubes, to generate UVC light to kill bacteria, viruses and mold spores. UVC light penetrates the outer cell membrane of the microorganism, passes through the cell body, reaches the DNA and alters the genetic material. Without chemicals the micro organism is destroyed and is unable to reproduce.

UVC is effective against Mycobacterium tuberculosis (TB), Legionella pneumophila (Legionnaire’s Disease), and other airborne infectious microbes. UVC reduces the effects of "sick building syndrome" by significantly reducing the bacteria count in the room. Germ-Zapper is designed to be wall mounted, above eye level, preferably 2 metres from the floor. It does not produces ozone or other noxious fumes and will not harm building occupants so long as there is no direct skin or eye contact with the UVC light.

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