This webinar you will have an update on the new EN779:2012 standard and the opportunity to have clean Indoor Air Quality and energy efficiency with Low Energy Air Filters.

1. Welcome to the Camfil Farr Training Academy
By the end of this webinar you will have an update on the new
EN779:2012 standard and the opportunity to have clean Indoor
Air Quality and energy efficiency with Low Energy Air Filters
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2. EN779:2012 will be arriving
Peter Dyment 07-02-2012

3. WHEN?
The latest indications are the standard will be due for
publication later this year. The situation will be updated
over the next few months.
We are all trusting that a decision to proceed will be
forthcoming so that our industry can make progress and
plan for the future.
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4. EN779 as a filter test standard has been with us since 1993
and was updated in 2002.
What is EN779:2012 about and why is it important?
It is the updated European Standard that gives a laboratory test
and class to benchmark HVAC air filter particulate efficiency.
It uses a test aerosol of 0.4 micron and ASHRAE dust to load
(not test) the filter and increase air filter resistance in stages.
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5. The EN779:2002 test is usually performed
by an independent test house on air filters
up to F9 classification and a test report is
issued. What is new in the 2012 update?
EN779:2002 Test Rig
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6. EN779 was revised in 2002 because of the problem regarding the
inconsistent particulate life performance of synthetic media filters.
SINTEF test results Norway (1995) show real lifetime performance losses
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7. Synthetic F7 Class filters have been marketed for many years but some
a have a working particulate efficiency dropping as low as 10%.
EN13779 advises that F7 is the minimum filter class required for
cleaning air and thereby making it safe to inhale. Clearly this
standard assumes a consistent F7 performance.
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8. EN779:2012 has set the minimum particulate
efficiency (ME) of 35% on an F7 grade filter. This
will exclude inferior synthetic media HVAC filters.
Min
Effy.
35%
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9. Test standard for coarse and fine air filters
1)
Table 1— Classification of air filters
Group Class Final test Average Average Minimum
2)
pressure arrestance (Am) efficiency (Em) Efficiency
drop of synthetic dust of 0,4 µm particles of 0,4 µm particles
Pa % % %
Coarse G1 250 50 ≤ Am < 65 - -
G2 250 65 ≤ Am < 80 - -
G3 250 80 ≤ Am < 90 - -
G4 250 90 ≤ Am - -
Medium M5 450 - 40 ≤ Em < 60 -
M6 450 - 60 ≤ Em < 80 -
Fine F7 450 - 80 ≤ Em < 90 35
F8 450 - 90 ≤ Em < 95 55
F9 450 - 95 ≤ Em 70
NOTE
1)
The characteristics of atmospheric dust vary widely in comparison with those of the synthetic loading dust used in the
tests. Because of this the test results do not provide a basis for predicting either operational performance or life. Loss of
media charge or shedding of particles or fibres can also adversely affect efficiency.
2)
Minimum efficiency is the lowest efficiency among the initial efficiency, discharged efficiency and the lowest efficiency
throughout the loading procedure of the test.
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10. Indoor Air Quality approach 2012
Particulate Efficiency
ME (Minimum Efficiency)
- F7 > 35%
- F8 > 55%
- F9 > 70%
Average efficiency – as before with caution
- nothing to change
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11. Indoor Air Quality approach 2012
Keep the IAQ level high!
Risk of decreasing efficiency from competitors!
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12. IAQ approach for 2012
Recommendations in EN13779: 2007
When the outdoor air quality has been categorized, EN13779:2007 clearly specifies the filter
class that is required to achieve preferred indoor air quality:
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13. Indoor Air improvement during 50 years
2011 filters for good IAQ
Particulate
1961 filters for good IAQ
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14. Indoor Air improvement during 50 years
2011 filters for good IAQ
IAQ / health
Particulate
Protecting equipment
1961
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15. Indoor Air improvement during 50 years
2011
IAQ health
Particulate 2012
EN779:2012
Protecting equipment
1960
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16. Indoor Air improvement during 50 years
2011
IAQ health
Particulate 2012
Risk ?
Possibility!
Protecting equipment
1961
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17. Why is there a risk during 2012 ?
• Glass fibre media F7 >60% efficiency – optimum
• The new EN779:2012 ME = 35% for F7
(Minimum Efficiency)
• Could lead to over 40% less clean air
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18. Eurovent Energy Efficiency Rating Programme
Based on……
- EN779:2012
ME
- F7 > 35%
- F8 > 55%
- F9 > 70%
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19. Eurovent Energy Efficiency Rating Programme
• ME
- F7 50 > 35%
- F8 70 > 55%
- F9 80 > 70%
dP lower
Energy rating higher
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20. Why a is there a risk in 2012 ?
• Traditional glass fibre media
F7 > 60% minimum efficiency – in built up environment
• Synthetic F7 charged media – ME = 16-20%
• Synthetic media has to improve to reach minimum 35% ME
(minimum efficiency) – with increased pressure drop
• New glass media >45% efficiency – lower pressure drop
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21. Check the Indoor Air Quality Factor (IAQ factor)
The IAQ factor is found by
dividing the LCC by the ME.
It tells you have much filter
performance you are getting for
your money.
EG. M7 F7 bag = 24.7 IAQ
G4 S-Flo-F7 bag = 154.6 IAQ
IAQ Factor is 6.25 X
per % Minimum Efficiency (ME)
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22. HVAC Air Filtration
Hi-Flo F7
Synthetic medias All medias shown
rely on electrostatic at the same
charge for good magnification
particulate efficiency
Synthetic Competitor F7 S-Flo F7
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23. What is the 2012 HVAC product opportunity?
• Synthetic media filters will have to improve to reach 35% minimum
particulate efficiency (ME) – meaning an increased pressure drop
• Reduce pressure drop with LEAF – keep minimum efficiency high (ME)
usually about 55% to 60% for F7.
• Never compromise on filter particulate efficiency !
• Save energy – better LCC – Eurovent Energy Classification Programme
• That is an improvement opportunity!
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24. THANK YOU
for attending this webinar session
ANY QUESTIONS?
Please do not hesitate to contact Camfil Farr for any additional
information or to arrange a visit.
For more information about clean air solutions, improving air quality, low
energy air filters, CRC (Carbon Reduction Commitment),
AHUs (Air Handling Units) and the EPBD, visit
www.keepthecityout.co.uk
www.lowenergyairfilter.co.uk
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