Download - Pollution and Indoor Air Quality

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What’s air pollution like around here? Pollution and Indoor Air Quality

City centre air quality is typically above WHO annual warning levels for PM2.5 and NO2.


The opportunity for improvement is great


Indoor Air Quality from the HVAC system

If your building has mechanical ventilation, ask if it uses regularly maintained, low energy, air filters complying fully with British and European standard BS:EN 13779.


Annual mean nitrogen dioxide in 2010

London Air Quality Networkhttp://www.londonair.org.uk/london/asp/annualmaps.asp

http://www.londonair.org.uk/london/asp/annualmaps.asp


Schools near roads carrying over 10,000 vehicles per day

How polluted is my school? http://www.howpollutedismyroad.org.uk/schools.php

http://www.howpollutedismyroad.org.uk/schools.php


Diesel exhaust in tonnes per kilometre per year

How polluted is my road? http://www.howpollutedismyroad.org.uk/roads.php

http://www.howpollutedismyroad.org.uk/roads.php


Free Clean Air in Cities app

Reports the health impact of long-term exposure to dangerous airborne particles (PM2.5) for the population in local areas, regions and England as a whole itun.es/i6xj69k

http://t.co/kjw14bMEwp


Air filter groups and classes

Group Filter class Example of use Average collection efficiency for the most penetrating particle size (MPPS) %

Average efficiency for 0.4 mm particles %

Average arrestance of dust %

Coarse G4 Warehouses Over 90

Medium M5 Protection of ventilation systems

40-59

M6 60-79

Fine F7 Schools 80-89 (min 35)

F8 Laboratories 90-94 (min 55)

F9 Healthcare 95 and above (min 70)

Efficiency particulate filters

E10 Precision tooling 85

E11 95

E12 99.5

High efficiency particulate filters

H13 and H14 Operating theatres Over 99.95

Ultra low penetration air filters

U15, U16 and U17 Space craft Over 99.9995


British and European standard BS:EN 13779for non-residential buildings

Outdoor Air Quality (ODA) Indoor Air Quality (IDA)

IDA 1(High)

IDA 2 (Medium) IDA 3 (Moderate) IDA 4(Low)

Increasing pollution

ODA 1 eg countryside≤1.0xWHOe.g. NO2≤40mg/m3

F9 F8 F7 F5

ODA 2eg smaller towns<1.0-1.5xWHOe.g. 40mg/m3<NO2and NO2≤60mg/m3

F7 + F9 F6 + F8 F5 + F7 F5 + F6

ODA 3eg city centres≤1.5xWHOe.g. 60mg/m3<NO2

F7 + GF + F9 F7 + GF + F9 F5 + F7 F5 + F6

GF = Gas filter (carbon filter) and/or chemical filter.Table based on appendix A.3 “Use of air filters” in European standard EN 13779


1. Clean air that can be inhaled without risk to health. LOW - PM2.5 LOW - NOx LOW - O3 LOW – SOx Use Air filters recommended by EN13779:2007 and tested to EN779:2012 class F7 to F9

2. Temperature 20-22 deg.C. Suitable for comfort

3. Relative Humidity should be 40% to 60%

4. Ventilation rate sufficient to dilute CO2 and maintain O2

5. Check building envelope has low leakage

6. Check HVAC plant is fit for purpose, well maintained. Suitable controls and control strategy.

Indoor Air Quality from the HVAC system


What is the major risk to health? Poor IAQAir Pollution causes up to 360,000 premature deaths per year in the EU. Pope et al 2002

•Particles Cardio vascular diseasesLung diseasesAsthmaIncreased mortality in heart and

lung diseasesand cancer

Bacterial and Viral infection

•Nitrogen dioxidesAsthma and breathing disorderReduced lung functionReduced immunological defense.Cancer

OzoneAsthmatic disorders, mucous irritation, eye irritation, headache

Benzene & PAHCancer


An airtight building envelope and effective air filtration can prevent ingress of air pollution for clean IAQ

Particles counted are mainly toxic fine combustion particulates from traffic

BenefitParticle Reduction of 78% between Outside and Inside Air

Particle Reduction to Supply Air also byEffective Air Filtration


Airtight building testing

Airtight building envelope testing is becoming a requirement for many new-build projects

BSRIA Air Tightness for compliance to Part L1 and L2 building regulations. Member of ATTMA, the appointed air pressure testing organisation for the BINDT

Once the air tightness of a building envelope is known it is possible to assess the required air change rates to give adequate ventilation.

Carbon dioxide reduction along with other internal background gas phase pollutants can be achieved.


• Particle filtration• Gas filtration• Without upgrading

the main HVAC system • Energy efficient

CamCleaner™ Stand alone portable air cleaners provide a practical health and economic solution

Mix recirculation and supply air

Fast response and portable to give Clean Indoor Air Quality


Indoor Air Quality problems can be determined by Air Quality testing

Indoor air pollutants can be measured and assessed by use of a particle counter or for gas pollutants a gas monitor or a City check kit as shown. This kit can determine concentration levels for 39 different problem gas pollutants.

Once the type and concentration of the pollutants has been determined and the risk level determined, action can be taken when required to make reductions.

Portable handheld particle counter


HiFlo M7 Bag filterCity-Flo Bag filter

Citycarb compact filter Citysorb compact filter

Low Energy Air Filters consistent and effective IAQ performance

•Low Energy Air Filters with EN13779:2007 performance F7 to F9

•Gas filtration also to EN13779:2007 when required.

• Micro-fibre glass medium performs consistently for up to 2 years.

•Low operating pressure drop for best energy efficiency.

•Minimal maintenance and disposal costs


ANY QUESTIONS?Download our APP from Google Play

For more information about clean air solutions, improving air quality, low energy air filters, AHUs (Air Handling Units) and the EPBD, visit

www.lowenergyairfilter.co.uk www.keepthecityout.co.uk

www.camfil.co.uk

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Download - Pollution and Indoor Air Quality

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