Air Filtration

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What is in
the air we
breathe and how
does it affect
our health?
Air Pollutants
Sulphur
Dioxide
Breathing problems, respiratory illness,
changes in the lung’s defences, and worsening
respiratory and cardiovascular disease.
Irritation of the eyes, nose and throat.
Exposure to high levels may cause
muscle spasms and can damage the
lungs and heart.
Hydrogen
Fluoride
Irritates the respiratory tract and eyes causing
coughing, a burning sensation, wheezing
and shortness of breath. Can decrease lung
function and aggravate asthma and other lung
diseases. Can also lead to premature death.
Ozone
Possible chronic health effects include
cancer, central nervous system disorders,
liver and kidney damage, reproductive
disorders, and birth defects.
VOCs
Irritates the lungs and lowers resistance
to respiratory infections such as influenza.
Exposure to NO2 is associated with increased
deaths from heart and lung disease, and
respiratory illness.
Nitrogen
Oxides
Reduces oxygen delivery to the body’s
organs (like the heart and brain) and
tissues. Long-term exposure to lower
concentrations can cause
neurological damage.
Carbon
Monoxide
Headache, skin complications,
respiratory and mucous membrane
irritation, respiratory soft tissue
damage and degeneration, confusion,
impairment of verbal recall,
and memory loss.
Hydrogen
Sulphide
Can cause or aggravate cardiovascular and
lung diseases, heart attacks and arrhythmias.
Can cause cancer. May lead to atherosclerosis,
adverse birth outcomes and childhood
respiratory disease.
PM2.5
& PM10
How small are such particles?
Smaller
than a hair’s
width!
Illustration
shows comparative
size of particles
PM1 PM2.5 PM10
1 micron
2.5 micron
Human hair
10 micron
70 micron
Particle Penetration
100 µm
How far
do particles
penetrate the
body?
Nose
10 µm
3 µm
Throat
Lungs
1 µm
Blood
What better air quality means
How much longer
would our lives be
extended if certain
factors were reduced
or eliminated?
Car Accidents
2 months
gained
predicted life expectancy
Passive Smoking
2½ months
gained
predicted life expectancy
PM2.5
(reduced by
10 µg/m³)
7½ months
gained
predicted life expectancy
reduced
Source: Department of Health, Air Quality Fifth Report of Session 2009-10 volume 1, UK
Acceptable PM Levels
World
According
to the World
Health
Organisation!
PM10
PM2.5
20 µg/m³
10 µg/m³
Health Organisation
How effective are different filter classes?
How much
of the nasty
stuff is
removed?
Filter
Grade Used
Polluted
Air
PM2.5
Removed
PM10
Removed
M5
35%
80%
M6
55%
85%
F7
80%
90%
F8
90%
95%
F9
92%
97%
The higher the filter grade,
the more effective the PM removal
HVAC and filtration are a significant
consumer of energy
Choosing the
right filter can
have a dramatic
impact on energy
consumption
Pie chart shows total
EU Energy Consumption
40%
is used by
Buildings of which
5-10%
is used by
Filtration
Why choose a lower filter class?
According
to Eurovent
4/21 (kWh)
Annual Energy Consumption
of an A-rated filter
M5
M6
550
650
kWh
kWh
F7
950
kWh
F8
F9
1200
1450
kWh
kWh
Typical life cycle costs of
an air conditioning filter
Choosing a
cheaper filter
may cost more in
the long run
80%
10%
Energy
Purchase
7%
3%
Maintenance
Disposal
Air-conditioning system resistance
The
importance
of changing
your filters
on-time
Clean filter accounts for 25% of an
air-conditioning units’ energy demand
Loaded filter accounts for 50% of an
air-conditioning units energy demand
Optimum Filter Specification
Choosing the right filter is important!
F7
M6
M5
F9
F8
Typically, the higher the particulate removal,
the higher the energy consumption
Finding the right balance
between the two is key!
Energy
Demand
@vokesair
www.vokesair.com