UVGI Presentation

Presentation of UVGI Systems Ltd.

By Adrian Ng Airgate Engineering (HK) Ltd

Presentation of UVGI Systems Ltd.

By Peter Hudsonand Barry Pollard

Presentation of UVGI Systems Ltd.ForCIBSE

By Peter Hudson [email protected], 07860 883 923Barry PollardAzael [email protected]; www.uvgi.com

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Mission Statement

To provide a range of air sterilisation products capable of maximum efficiencyunder a full HEVAC range of conditions(i.e. air velocity, volume and temperature).

Further, to create a suite of products capable of modular assembly to provide a practical yet flexible total air sterilisation solution.

HOW CLEAN IS YOUR AIR?

Is outside air really “fresh air” ?

More than 20% of outdoor air contains harmful bacteria & Pathogens

HOW CLEAN IS YOUR AIR?

Is outside air really “fresh air” ?

More than 20% of outdoor air contains harmful bacteria & Pathogens

Current major concerns in the World

Poor Indoor Air QualityRe-circulated air ventilation

Healthcare Acquired Infections

TuberculosisMeningitis

MRSAC. Diff

InfluenzaH1N1 & Avian

SARS

HealthCare Acquired Infections(HCAI’s)

Effect:10% to 20% of all Patients

Claimed:20,000 deaths pa in Germany30,000 deaths pa in UK90,000 deaths pa in USA

Only a plane ride away!!!

H1N1 WHO declares Influenza pandemic• In less than 8 weeks it has spread to 75 countries,

causing death in 9.• 30,000 cases globally & 141 deaths.• Figures are rising daily. (updated 11.6.09)

• It is the first flu pandemic in 40 years- the last in 1968 killed about one million people.

• Two weeks later its risen to 60,000 cases & 263 deaths(update 29.6.09)

• In 6 weeks 5,500 people infected in 20 countries.

• This grew to 8,096 infected casesand 774 deaths in 4 months.

• Planes and hotels were empty, resulting in losses over $100 Billion.

SARS OUTBREAK in 2003

SARS: Severe Acute Respiratory Syndrome

Indoor Air Quality (IAQ) problems

Air ducts are places where microorganismscan grow and gather by cross contamination

Microorganisms can double every 20 minutesIn a single day one microorganism grows to4,700,000,000,000,000,000.

Resistance to Antibiotics – increases the threat to our health.

Micoorganisms becoming resistant to AntibioticsMRSASARSTBNoroBird FluLegionella

ULTRA CLEAN AIR - GUARANTEED

Removes airborne pathogens- including Bacteria & Viruses

MEASURABLE PERFORMANCEWITH GUARANTEED RESULTS

COMMERCIAL BENEFITS

Reduced energy operating costs by 20%

Reduces Ozone & Biological inter-action with VOC’s

Reduced absenteeism

COMMERCIAL BENEFITS

Reduce energy operating costs by 20% of fresh air

Reduces Ozone & Biological inter-action with VOC’s

Reduced absenteeism

M&S Plan ASocial conscience

Sustainable Environment

Sick Building Syndrome

Eco friendly

Reducing Energy Costs

Building Regulations Part L to be re-writtenA reduction in the ventilation rate from 10 l/sec down to 8 l/sec in line with ASHRAEWould result in:20% reduction in heating & cooling costs.

Microbial Filtration

Social conscience

Sustainable Environment

Sick Building Syndrome

Eco friendly

Reducing Energy Costs

20% reduction in heating & cooling costs.

UVC providesMicrobial Filtration

WHAT IS UVGI ?

Ultra Violet Germicidal Irradiation

@ 254 nm wavelength lethally damages airborne microorganisms

UVGI - recognised term throughout the world

HOW DOES UVGI WORK?

Disrupts the microorganisms DNA- Causing cell death or incapable of multiplying

Nobel Prize foruse against TB

Key to performance - Light intensity & Dwell time

REASEACH & DEVELOPMENT

Patented technology> £14M Investment> 10 Yrs R&D

Measurable Performance & Guaranteed Results

PARTNERS IN DEVELOPMENT

Air movement & Acoustic specialists

UK Government HPA Porton Down Test HouseStaphyylococcus Epidermis – (MRSA)Aspergillus Niger – Aspergillus Fumigatus / AnthraxMycobacterium Vaccae – TBMS-2 Coliphage (Influenza / SARS / Coronavirus / E coli

Results - Average efficiency > 99.9%


Pathogen control departmentResults showed reduced concentrations by 99.9%

ON GOING RESEARCHProfessor Beggs of University of BradfordWorlds leading expert in prevention & control of healthcare associated infections

Basingstoke NHS Hospital2 Yr test in four high dependency roomsSignificant reduction in colony count


Pathogen control departmentResults showed reduced concentrations by 99.9%

ON GOING RESEARCHProfessor Kowalski - University of Penn State, USAWorlds leading expert in UVC SterilisationProfessor Noaks - University of Leeds Pathogen Control

Basingstoke NHS Hospital2 Yr test in four high dependency roomsSignificant reduction in colony count

CLINICAL TRIAL

Air Quality SamplingMeasured in Colony Forming Units (CFU's)

Room

With or without

UVGI device CFU/M3 CFU/FT3%

Improvement

Isolation Room 727 No UVGI 675 19.1

93%

With UVGI 50 1.4

A & E Room 7 No UVGI 1,770 50.0

84%*

With UVGI 287 8.1

* Air sample taken immediately after room occupancy

Sample Tests CFU/M3

Before 30.3.10 490

6 Hours after 90

22.4.10 A. By bench, centre of room

<7

22.4.10 B. by door 20

Hong Kong Stem Cell Laboratory TestASU 6000 Fee- Standing Unit

M3/Hr CFU/M3Before

CFU/M3After

%“Kill”

1500 12,340 24 99.82

2000 10,980 24 99.79

3000 7,600 0 100.00

National Bio Protection Engineering Centre ShanghaiCDC Test for ASU 3000 In-Duct Unit

Trial of UVGI Systems Air Sterilisation Equipment Using ASU 1000 In-Branch and Ceiling-Jet Units

DateColony Forming

Units / M3

Fungi present

15.03.10 680 Yes16.03.10 Installation19.03.10 32 No

95% improvement within 3 days.

Royal Hospital Sultanate of Oman

PROVENTEST RESULTS

pass the HEPA filters

pass a conventional

filter

Primary Target markets

• Healthcare

• Commercial Offices

• Hotels

• Entertainment venues

• Schools & Universities

Additional potential markets

• Leisure Centres

• Food Industries

• Pharmaceutical

• Aircraft

• Cruise Ships

Global Opportunities

PRODUCTS

To suit any air duty,room size or building layout…

….without compromising on air sterilisation efficiency.

In-Branch

In-DuctMulti-Assembly

Ceiling-Jet

Free-Standing

PRODUCTS

In-Duct Units

Sterilising poor outdoor air….

……and for servicing re-circulated indoor air systems

Multi Assembly In-Duct Units

PRODUCTS

ASU 1000In-Branch Unit

Designed to serve individual or isolated rooms

Balancing volume & velocity to create maximum dwell time

– to eliminate all harmful pathogens

ASU 1000In-Branch Unit

Technical DetailsDimensions W x H x L (mm) 175 x 175 x 750 Weight 10kgPower input 170 WattsPower supply 220 – 240 AC / 50 Hz / 1 Phase Lamp replacement 9000 HoursAir Volume @ 15 Pa 0.15 m3/s

318 CFM540 m3/Hr

Specifically designed to serveIndividual rooms

ASU 2000In-Duct Unit


1695 CFM2,880 m3/Hr

Designed for general Commercial applications & low to medium risk Medical situations

ASU 3000In-Duct Unit


1695 CFM2,880 m3/Hr

The most powerful andefficient air sterilisationunit of its type

Ideal for high risk medical applications

Sterilising poor outdoor air….

……and for servicing re-circulated indoor air systems

ASU 2000 / ASU 3000 Multi-Assembly In-Duct Modules

ASU 2000 / ASU 3000Multi-Assembly In-Duct Modules

To suit any air duty,room size or building layout…

….without compromising on air sterilisation efficiency.

For total design flexibility

SCALABLE

ASU 2000 / ASU 3000Multi-Assembly In-Duct Modulescan be added to any existing system and new build….….to suit any air duty, room size or building layout

To suit your requirements


ASU 5000Ceiling-Jet Unit

Sterilises indoor air through localised recirculation

Sized to replaces a single standard ceiling tile

Unique & Patented

CEILING-JET UNIT

Directional air jet dissipates air throughout the entire room, including areas of high bacterial concentration

ASU 5000Ceiling-Jet Unit

Technical DetailsDimensions W x H x L (mm) 595 x 595 x 345 Weight 30kgPower supply 220 – 240 AC / 50 Hz / 1 Phase Lamp replacement 9000 HoursOptimum room size 50 cu mFan In-line backward curve fan , EC rotor motor

with integrated electronic controlsSettings m3/s CFM dBA Amps Watts Air Changes / Hr*Standard 0.10 212 39 0.78 180 12 Boost 0.22 466 60 0.84 230 26

Using latest discharge technologyto maximise minimum air quantity

ASU 6000Free-Standing Unit

Portable device – used to sterilise specific spaces

“Standard flow”setting for general cleaning & “High Pulse” for roompurging

ASU 6000Free-Standing Unit

Technical DetailsDimensions W x D x H (mm) 400 x 400 x 880 Weight 20kgPower supply 220 – 240 AC / 50 Hz / 1 Phase Lamp replacement 9000 HoursFan Direct drive, rotor motor, forward curve DIDW

centrifugal fan with sealed bearings Optimum room size 50 cu m Settings m3/s CFM dBA Amps Watts Air Changes / Hr*Standard 0.10 212 40 1.16 270 12 Boost 0.21 445 57 1.28 288 25

Using latest discharge technologyto maximise minimum air quantity

ASU 4000Modular System

For large remote rooms not served by a central ductwork system

Comparison of the ASU 3000 with a traditional UV solution

Side Elevation – Irradiation Pattern Isometric – Irradiation Pattern

Traditional UV solution

Air flow

1200 Long dwell chamber

350

x 55

0

The traditional way to create a UV zone is by mounting a number ofUV lamps perpendicular to the airstream.

What determines the ability to killairborne pathogens?

1. UV intensity2. Dwell time (exposure)3. Resistance of pathogen to UV irradiation

UV lamp intensity reduces dramatically as the distance increases away from the lamp:

UV intensity factor in relation to distance from the lamp

0

50

100

150

200

250

300

350

400

0 100 200 300 400 500 600 700 800 900 1000

mm

uW/cm2

Distancefrom lampmm

LampIntensityFactor

0 354

25 127

50 69

100 32

150 20

200 14

250 14

380 6

500 4

635 3

760 2

890 1.4

1000 1

Only very close to the lamp is the irradiation intensity high enough to kill.

‘Blue light’ in itself does not kill.

Lamp irradiation comparison

87W / 28W UVC vs 48W / 13W UVC

Traditional lampUVGI lamp

Traditional 48 watt commercial single lamp

irradiation performance based

on manufacturers technical data.

UVGI System 87 watt single lamp


on manufacturers technical data,

UVGI lamps 4 times larger “killzone”

ASU 3000

Average irradiation value 70,000 µJ/cm2

Air flow

@ 0.15 seconds dwell time & 5.8 m/s optimum velocity

ASU 3000

Average Dose value 25,000 µJ/cm2 - URV 20

Air flow

@ 0.15 seconds dwell time & 5.8 m/s optimum velocity

Perpendicular to airflow

using traditional lamps (40W / 5W UVC per lamp)

Air flow

350

x 55

0 m

m

To achieve the same minimum UV irradiation as ASU 3000

a) 55 No. lamps requiredb) Increase in air velocity/reduction in dwell timec) High radiated heat 2.2 Kw & 2.3 ºC temp raise. d) Remote ballast likely due to congested lamp configuration.

0

10000

20000

30000

40000

50000

60000

70000

80000

90000

100000

0 200 400 600 800 1000 1200

Lamp Irradiation Pattern

uW/c

m2

Irradiation performance ofUVGI Systems ASU3000 unit (Depth of UVfield 550 x 350 mm)

Irradiation performance of4 lamp set up with samespec as ASU 3000 lamps(Restricted depth of UVfield: 280 mm dia)

Irradiation performance of4 lamp traditional set upperpendicular to airflow(Restricted depth of UVfield: 75 mm dia)

1

2

3

1

2

3

UV field comparison using :

ASU 3000 = 70,000 uJ/cm2 average blanket irradiation.

1) ASU 3000 unit – lamps parallel to airflow.

2) 4 x 90W lamp stab-in unit – lamps perpendicular to airflow.

3) 4 x 40W lamp traditional stab-in unit – lamps perpendicular to the airflow

350 x 550 mm

duct

850 mm Dwell time

mm mm

0

10000

20000

30000

40000

50000

60000

70000

80000

90000

100000

0 200 400 600 800 1000 1200

Lamp Irradiation Pattern

uW/c

m2

Irradiation performance ofUVGI Systems ASU3000 unit (Depth of UVfield 550 x 350 mm)

Irradiation performance of4 lamp set up with samespec as ASU 3000 lamps(Restricted depth of UVfield: 280 mm dia)

Irradiation performance of4 lamp traditional set upperpendicular to airflow(Restricted depth of UVfield: 75 mm dia)

1

2

3

1

2

3

UV field comparison using :

ASU 3000 = 25,000 uJ/cm2 average blanket Dose.

1) ASU 3000 unit – lamps parallel to airflow.

2) 4 x 90W lamp stab-in unit – lamps perpendicular to airflow.

3) 4 x 40W lamp traditional stab-in unit – lamps perpendicular to the airflow

350 x 550 mm

duct

850 mm Dwell time

mm mm

UVGI Systems additional advantages• Lamps parallel to airstream – most efficient use of power.

• Prevent dust build up.

• 2.5 times less Power consumption.

• Easy to install and maintain, including when retrofitting existing HVAC installations.

• Investment is 40-60% lower.

• UVGI guaranteed performance throughindependent test data.

• Lower annual maintenance costs.

Room Type Description Sterilisation Guide URV µW/cm2 Risk Level

Domestic Influenza 45 - 80%

10

11

12

500

1,000

1,500

Low

Commercial Influenza 81 - 95%

13

14

2,000

3,000

Low /Medium

High spec commercial / Low Medical

Influenza 99%

15

16

4,000

5,000

Medium

Medium Medical

Influenza 99.99%

Adenovirus 90 - 98%

17

18

6,000

8,000

Medium /High

High Medical Adenovirus 99.99%

19

20

10,000

20,000

High

URV = Ultraviolet Rating Value / µW/cm2 = UV dose required for sterilisation.

Ultra violet germicidal irradiation Rating Value (URV)Level of Sterilisation by room type

ASU 1000

ASU 6000

ASU 2000 / 7000

ASU 5000

ASU 3000 / 8000

Room Type Description Sterilisation Guide URV µW/cm2 Risk Level

Domestic Influenza 45 - 80%

10

11

12

500

1,000

1,500

Low

Commercial Influenza 81 - 95%

13

14

2,000

3,000

Low /Medium

High spec commercial / Low Medical

Influenza 99%

15

16

4,000

5,000

Medium

Medium Medical

Influenza 99.99%

Adenovirus 90 - 98%

17

18

6,000

8,000

Medium /High

High Medical Adenovirus 99.99%

19

20

10,000

20,000

High

URV = Ultraviolet Rating Value / µW/cm2 = UV dose required for sterilisation.

Ultra violet germicidal irradiation Rating Value (URV)Level of Sterilisation by room type

ASU 1000

ASU 6000

ASU 2000 / 7000

ASU 5000

ASU 3000 / 8000

NoTraditional Solution Available

NoTraditional Solution Available

Introduction

1. UV intensity2. Dwell time (exposure)3. Resistance of pathogen to UV irradiation

UVGI Systems of the UK has developed the most effective solution toremove airborne pathogens in a single pass.

This analysis explains why UVGI Systems is more effective thantraditional UV solutions.

What determines the ability to kill airborne pathogens?

UV intensity

UVGI uses ultra high power UV lamps.

The UV intensity is a result of the power of the lamp in combination with its optimum field of irradiation –The closer the pathogen passes to the lamp the greater the UV exposure level.

Traditional UVGILength (mm) 406 842Power (Watt) 40 87Yielding UV (Watt) 5.3 28

UVGI Systems lamps produce more than 5 times the irradiation of atraditional UV lamp (as used in most UV sterilisation equipment or installations).

Lamp irradiation comparison

87W / 28W UVC vs 48W / 13W UVC

Traditional lampUVGI lamp

Traditional 48 watt commercial single lamp


on manufacturers technical data.

UVGI System 87 watt single lamp


on manufacturers technical data,

UVGI lamps create a 4 times larger killzone than traditional UV lamps

Dwell time (exposure)

In order to kill a pathogen, it needs to be exposed to UV irradiation fora certain period within a consistant UV field.

Practical air volumes in HVAC installations are 0.8 m3/sec (1695 CFM).

Standard ducting at cross sectional size of 350 mm x 550 mm results in anairspeed of 5.8 m/sec.

This means that a particle travels a distance of 1200 mm in 0.15 sec.

Objective:To kill effectively airborne pathogens in a single pass, maximising velocitywithin practical HVAC applications.

End Elevation – Irradiation Pattern

( = Internal reflective surface )Side Elevation – Irradiation Pattern / Dwell Time

Isometric – Irradiation Pattern

ASU 3000 UV Irradiation Pattern – Average irradiation value 70,000 µJ/cm2@ 0.15 seconds dwell time & 5.8 m/s optimum velocity.

850 mm contact time = 0.15 secs dwell timeAir

flow

UVGI System 87 watt single lamp irradiation performance based on manufacturers technical data,

1200mm Long dwell chamber

350

x 55

0 m

m

550mm Wide Duct

350m

m D

eep

Duc

t

Power: 45 lamps x 40W = 1,800 watts total (ASU 3000 – 696 W)

UVC: 45 lamps x 5W = 225 watts UVC total (ASU 3000 – 224 W)

(Internal reflective liner assumed)

Alternative lamp configuration perpendicular to airflow using traditional lamp selection.

(40W / 5W UVC per lamp)

Air flow

850mm Dwell Time

A) Same UVC Output as ASU 3000

Air flow

350

x 55

0 m

m35

0 x

550

mm

B) Same UV irradiation as ASU 3000

a) Lowest irradiation value of 3,750 µW/cm2 against 5,600 µW/cm2 for ASU 3000. ie. less efficient use of UVC in perpendicular

configuration.

b) Non-standard lamp length required to cover full 550 mm wide duct.

c) High radiated heat output from lamps – 1.8 Kw / 1.9 ºC temp raise. (ASU 3000 – 0.6 ºC)

d) Remote ballast likely due to congested lamp configuration.

a) 55 No. lamps required to provide matching minimum irradiation value to ASU 3000 of 5,600 µW/cm2.

b) Increase in air velocity/reduction in dwell time through unit due to congested lamp grouping.

c) High radiated heat output from lamps – 2.2 Kw / 2.3 ºC temp raise. (ASU 3000 – 0.6 ºC)

d) Remote ballast likely due to congested lamp configuration.

Alternative 40 watt commercial single lamp irradiation performance based on manufacturers technical data.

Notes

850mm Dwell Time




Power: 20 lamps x 48W = 960 watts total (ASU 3000 – 696 W)



Alternative lamp configuration perpendicular to airflow using traditional lamp selection.


Air flow

850mm Dwell Time

A) Same UVC Output & Irradiation as ASU 3000

350

x 55

0 m

m

a) 20 No. lamps required to provide matching minimum irradiationvalue

to ASU 3000 of 5,600 µW/cm2.


c) Higher radiated heat output from lamps – 0.96 Kw / 1 ºC temp raise.

(ASU 3000 – 0.6 ºC)

d) Possible remote ballast required due to congested lamp configuration

Notes

Alternative 48 watt high output lamp irradiation performance based on manufacturers technical data.

Isometric – Irradiation Pattern

Power: 8 lamps x 90W = 720 watts total (ASU 3000 – 696 W)



Alternative lamp configuration perpendicular to airflow using compact lamp selection.


850mm Dwell Time

Air flow

350

x 55

0 m

m35

0 x

550

mm

B) Same UV irradiation as ASU 3000

a) Lowest irradiation value of 4,500 µW/cm2 against 5,600 µW/cm2 for ASU 3000. ie. less efficient kill chamber in perpendicular

configuration.


c) Higher radiated heat output from lamps – 0.72 Kw / 0.75 ºC temp raise.

(ASU 3000 – 0.6 ºC)

a) 12 No. lamps required to provide matching minimum irradiation value to ASU 3000 of 5,600 µW/cm2.

b) Higher radiated heat output from lamps – 1.08 Kw / 1.1 ºC temp raise. (ASU 3000 – 0.6 ºC)

Alternative 90 watt high output lamp irradiation performance based on manufacturers technical data.

Notes

850mm Dwell Time



Air flow

A) Same UVC Output as ASU 3000

Summary

– Perpendicular lamp positioning against parallel ASU 3000 configuration:

To match the performance of the ASU 3000 unit the following equivalent lamp numbers are required:

Option 1: 55 No UVC lamps x 40 W



=

Airborne UV “Kill rates”.

• HVAC airborne pathogen resistance higher than water borne by factor of 4 to 10. (Dr kowalski 2000 & Lukiersh 1946)

• Leeds University tests show a 5 x’s factor to guarantee sterilisation of 99.9%.

• e.g Tuberculosis 10,000 micro joules /cm2 for water borne UV kill rate. 50,000 micro joules /cm2 for air borne UV kill rate.

• UVGI ASU 3000 produces 70,000 micro joules /cm2.

• Excess lamp power leading to more expensive running costs.

• Higher radiated heat output – add to cooling load of central station air handler.

Additional cost for internal reflective liner to maximise 3 fold averaging factor(Reference paper: Kowalski 2000).

Higher maintenance cost due to increased lamp numbers.

Remote ballast / controls likely due to restricted space between lamps – To increase lamp centres will reduce overall irradiation level thereby reduce efficiency of steriliser.

Additional cost for safety interlocks to access doors on air handling unit to shut down UV lamps.

Summary cont– Perpendicular lamp positioning against

parallel ASU 3000 configuration:

Additional costs for interconnecting wiring between lamps & remote ballast location.

Dense grouping of low watt lamps (40W & 48W) creates higher velocity through killzone thereby reducing overall dwell time –

To increase dwell time further lamp rows necessary.

Re-design of current stab-in product necessary to include both improved lamp specification & associated ballast / controls upgrade.

Additional cost for safety interlocks to access doors on air handling unit to shut down UV lamps.

Summary cont– Perpendicular lamp positioning against

parallel ASU 3000 configuration:

UV BULB SAFETY

• High Efficiency

• High Wattage

• Quartz Shrouded

• BMS Compatibility

• *Guaranteed lamp life 13,000 hours – 1.5 years 24/7

• Full Warranty for 1 year.

Certificates of ConformityCE & EMC ISO 9001:2

Design, Manufacture & Installation

BESPOKE SOLUTIONS

Designed to serve any air given duty, any type of ventilation…..

…and suitable for both new build and existing developments

BESPOKE SOLUTIONS


Installation – quick and simple

• To suit any air duty, room size or building layout,

• Can be added to existing system or new build

Maintenance

• Annually

Availability

• 6 – 8 weeks

Installation – quick and simple

• To suit any air duty, room size or building layout,

• Can be added to existing system or new build

Maintenance• 9 Months

Mid Term

• 18 MonthsFull Service

Availability• 6 – 8 weeks

Cost Benefit Analysis

1 in 10 patients contract an infection whilst in hospital (HCAI). Costing an additional £12,000 each.

Even with only a 10% reduction…

PAYBACK in < 7 months

Increased occupancy ratesReduced patient costsPublic confidenceStaff moral


1 in 10 patients contract an infection whilst in hospital (HCAI). Costing an additional AED 66,000 each.





1 in 10 patients contract an infection whilst in hospital (HCAI). Costing an additional Qrs 72,000 each.





1 in 10 patients contract an infection whilst in hospital (HCAI). Costing an additional AUS $ 23,000 each.





1 in 10 patients contract an infection whilst in hospital (HCAI). Costing R 160,800 each.





1 in 10 patients contract an infection whilst in hospital (HCAI). Costing HK $153,600 each.





1 in 10 patients contract an infection whilst in hospital (HCAI). Costing SG $ 28,800 each.





1 in 10 patients contract an infection whilst in hospital (HCAI). Costing 7,600 Omani Rials each.





1 in 10 patients contract an infection whilst in hospital (HCAI). Costing 75,500 Saudi Riyals each.





1 in 10 patients contract an infection whilst in hospital (HCAI). Costing CNY 136,000 each.




Cost R’000 / per Patient

ICU 105 73 44 37

HC 102 49 40 34

GW 46 37 31

Patients / room 1 4 10 15

ICU* 43

ICU* No ventilation system – Ceiling-Jet onlyBased on 50m3 room with 2 patients

Cost R / Day per Patient in Year 1

ICU 288 200 120 101

HC 279 134 110 93

GW 126 101 85


ICU* 118

ICU* No ventilation system – Ceiling-Jet onlyBased on 50m3 room with 2 patients

Cost R ‘000 / Annum per Patient Yr 2

ICU 10.5 7.3 4.4 3.6

HC 10.2 4.7 4.0 3.3

GW 4.7 3.6 2.9


ICU* 4.0

ICU* No ventilation system – Ceiling-Jet only

Managed Service Contract

Cost R / Day per Patient Yr 2

ICU 29 20 12 10

HC 28 13 11 9

GW 13 10 8


ICU* 11

ICU* No ventilation system – Ceiling-Jet only

Managed Service Contract

Cost per Patient in Year 2 & beyond

Number of ASU’s per Room Type

Room Type ASU Patients per Room

30m3 30m3 70m3 70m3 175m3 250m3

Room # Air Ind’v Int’g Ind’v Int’g Int’g Int’g

Type Changes Type 1 1 4 4 10 15

ICU 15 I-B 1 2

I-D 0.15 0.36 1 1.3

C-J 1 1 3 3 4 5

ICU – Intensive Care Unit Ind’v – Individual room treated.Int’g – One of several rooms served by AHU



30m3 30m3 70m3 70m3 175m3 250m3



HCU 10 I-B 1 2

I-D 0.10 0.24 0.60 0.90

C-J 1 1 2 2 4 5

HCU – High Care Unit Ind’v – Individual room treated.Int’g – One of several rooms served by AHU



30m3 30m3 70m3 70m3 175m3 250m3



GW 5 I-D 0.12 0.30 0.40

C-J 2 3 5

ICU* 12 C-J 1

GW – General Ward.ICU* - No existing ventilation.

Ind’v – Individual room treated.Int’g – One of several rooms served by AHU.

Reduced Absenteeism

Average absence from work is 4% equivalent to 9 days.

1/3 is due to flu like cough’s & colds.

Assuming only a 10% reduction…


Reduced Energy Costs

PAYBACK in ? months

To be completed

Removes Airborne Pathogens

Measurable Performance

Guaranteed Results

Removes Airborne Pathogens

Measurable Performance

Guaranteed Results

UVGI Systems delivers the mostpowerful, efficient and economical

Air Sterilisation Units in live HVAC applications

The solution….

Thank you for your attention

Any questions?

Contact details:[email protected]

Peter Hudson [email protected] 883 9230161 266 1177

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UVGI Presentation

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