In-Duct UVC Air Purifiers

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UVC in-duct air purifiers are the most cost effective way to purify large airflows in ducting. Puravent are the UK distributor for Sanuvox who manufacture the Biowall range of UVC in-duct air purifiers. These air puriufiers are suspended in the duct with the lamps alined with the direction of airflow. This design helps ensure relatively long exposure to very high intensity UVC light very which results in predictable and very high distruction efficiencies.

The Biowall UVC in-duct air purifier system from Sanuvox provides a “barrier wall” of UVC Energy destroying biological contaminants passing through it. Each Biowall has 5 high intensity 19mm UVC lamps in parabolic reflectors to deliver 360° of UVC germicidal radiation to the airflow.

Biowall UVC in-duct air purifier are a ‘specified’ product range. This means that the size, number and arrangement of Biowall is specified to suit each application using Sanuvox mathcad modelling program.

This mathcad modelling process requires us to know airflow, temperature, duct size, duct material, and the specific target contaminants. Only with this level of information can we calculate accurately state the efficiency of the UVC in-duct air purifier in your application against your target micro organism challange (e.g. covid-19, H5N1 Flu, Tuberculosis bacilli…etc.) for first pass and for successive passes over the Biowall installation. This specification process means that each Biowall has mathematically demonstrable efficiency that is unique to its application.

If you need help or more information about UVC in-duct air purifiers and their application, call us on 01729 824108

Heat Load	Watts	BTU
Average The Room Is A Normal Residential Room, Office, Reception Area Or Similar, Where There Is Not Overly Crowded With People, Computer And Office Equipment.
Above Average There Are Factors That Contribute To Additional Heat Being Generated In The Room E.G. Strong Lighting, Overcrowding With People And Office Equipment, Conservatory Type Room, Or Flat Roofed Room.
High There Are Factors That Contribute To A High Heat Load In The Room. E.G. Commercial Cooking, Much Computer And Server Equipment, Switchgear, Temporary Building With Thin Walls And Flat Room, Plain Glass Conservatory.

Variable	Units	Notes/Guidance
System Airflow	M3/Hr	If you have it in cfm then multiply your cfm value by 1.7 to get m3/hr
Average Combined Pressure Drop Of Filters Of Higher Than F6 Efficiency	Pascals	F8 bag filters pressure drop - typical clean clean to dirty, 160 - 250 Pascals F9 compact filters pressure drop - typical clean to dirty, 160 - 350 Pascals H10 HEPA filter pressure drop - typical clean to dirty, 250 - 600 Pascals 9.8 Pascals = 1 mm wg, & 249 Pascals = 1 inch wg
Carbon Filters Pressure Drop	Pascals	For compact type carbons pressure drop between 100 - 150 Pa Bonded carbon panels typically 150 - 170 Pa Loose granular carbon panels typically 130 Pa
Annual Operational Hours	Hrs/Annum	8760 hours in a year If operating for 5 days a week, excluding public holidays, for 12 hrs/day = 3000 hrs
Cost Of Power	Pence Per Kwh	Huge variance in what different companies pay. heck your last bill to be sure, otherwise put in 10p
Fan Efficiency	(As Decimal Value, Eg 100%=1)	Would typically be around 60%, so if you don’t have specific information use 0.6
Fan Motor Efficiency	(As Decimal Value, Eg 100%=1)	Larger motors should be around 90%, so if you don’t have specific information use 0.9

The Total Average Pressure Drop Over Your Higher Efficiency Filters And/Or Carbon Filters Is;		Pascals
This Pressure Drop Is Costing In Energy Alone	£	Per year
It Is Probable That A Sanuvox In-Duct System Could Break Down The Biological, Chemical And Odourous Contaminants On This Air Flow For Between 16 And 25% Of This Running Cost	£	Lower energy cost estimate of an equivalent Sanuvox system (16%)
	£	Higher energy cost estimate of an equivalent Sanuvox system (25%)

Type Of Building	Kw Range		BTU Range
Sports Centres
Retail Premises
Office Premises
Small Industrial Unit
Medium Industrial Units
Larger Industrial Buildings
School/Community Halls
Churches

Room/building volume	m3
Temperature differential (deltaT °C)	°C

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