Be a company Energy Hero
Transcript of Be a company Energy Hero
Clean air solutions
THE CAMFIL GROUP
Peter DymentPeter DymentBe a Company Energy Hero
Camfil worldwide
2014 Group sales of £450m3,380 employees24 production plantsSales companies in 25 countriesAgents and representatives in more than 50 countries
Clean air should be a Clean air should be a human righthuman right
Low Energy Air Filters
Clean air inside citybuildings with minimum energyAnd running costs
Risk to Health fromTraffic air pollutionN02 and PM2.5
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Camfil City M - Air purifier – Clean Indoor Air at point of need
Low Energy Air Purifier
Air Flow Rate 430 M3/hr
6 Fan speeds
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The only Eurovent A+ rated F7 filters currently available 2015
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Eurovent HVAC Air Filter Energy Rating 2015
Uses the energy equation with 50% fan efficiency and 6000 hours running time
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All Eurovent Certification data is publicly available online..
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Low Energy Air Filters for Indoor Air Quality
The primary purpose of Air Filters in building HVAC systems is to filter and clean air for people to breathe without risk to health.
The secondary purpose of Air Filters in building HVAC systems is to filter air to keep clean and protect the air plant duct system and the internal fabric of the building.
Why we need Air Filters?Why we need Air Filters?
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Camfil Low Energy Air Filters can save
Money, Energy and Carbon
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Typically 50% of energy use in Commercial Office buildings can be used in HVAC systems
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See the Energy Saving Opportunity
£14430 per year There are about 50000 buildings with large AC systems CIBSE
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Low Energy Air Filters
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• We spend 80% of our time inside• 50 % of all particles inside come
from outdoor air. 50 % are generated from indoor sources
• The particles penetrate the building through ventilation or leaks.
• Air pollution adversely affects the growth of lung function during the period of rapid lung development that occurs between the ages of 10 and 18. (The New England Journal of Medicine)
Stay healthy – stop breathing?
Air Quality problems in the UK
UK Government report indicates PM2.5 pollution is 3X more damaging to public health than passive smoking.
5X more damaging than loss of life due to road accidents
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Graph indicating probability of progress of PM ultra-fine particulate pollution into the human respiratory system
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DALY Disability Adjusted Life Year
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Air Filter Classification
The filter test standard that classifies air filters G2 – F9 is EN779:2012
EN13779:2007 advisesF7 as a minimum and F9 as the advised for the required particulate efficiency
For HEPA and ULPAEN1822:2009 Classes E10 - U17
New EN779:2012 classification for coarse to fine air filters
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Table 1— Classification of air filters1)
Group Class Final test pressure
drop
Average arrestance (Am) of synthetic dust
Average efficiency (Em)
of 0,4 µm particles
Minimum Efficiency2)
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.
EN779:2012 has set the minimum particulate efficiency (ME) of 35% on an F7 class filter.This will exclude inferior synthetic media HVAC filters.
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Min Effy. 35%
SINTEF Real life test :1995
Comfort ventilation
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Typical Particle
=> .4 micron
Synthetic Competitor F7
HiFlo F7
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Particulate Efficiency %Particulate Efficiency %
Particle Size MicronsParticle Size Microns
M5, M6, F7, F9
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Particulate Efficiency %
Particle Size MicronsParticle Size Microns
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Particle Size MicronsParticle Size Microns
Particulate Efficiency %
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A Typical Air Handling Unit and its component sections
1 - Supply air duct2 - Fan section3 - Flexible connection4 – Heating/Cooling coils5 - Filter section6 - Air intake duct
• Air filters separate any airborne particles from air flow.• Their purpose is to :
• provide clean air and Indoor Air Quality to building occupants• keep the HVAC system clean and energy efficient
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Air Handling Unit energy flow
Pre-filterSecondary-filter
Intake Air
Frost coil
Supply Air
DamperHeating coil
Cooling coil
FAN
MOTOR
Gas-filter (Carbon) Attenuator
OUTSIDE INSIDE
Electrical Energy input via motor
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How we optimise our Low Energy Air Filter selection
A Hiflo2 F7 Bag filter with 9.2 M2 of micro-fibre
media has the optimum low pressure drop and
consistent high particulate efficiency with
a longer working life
BS:EN13779:2007 advises F7 minimum efficiency
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Energy consumed by air filters
The cost of ventilation
• The energy requirement for ventilation is expensive.
• Filters account for approx. 30% of the total energy cost of the system. (C.I.B.S.E. data)
• Filters are the most inexpensive part of the system to improve.
• Without Capital Expenditure
Clean air with economic benefits
30% of total system pressure loss
40%
20%
4%
Pascal
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Life cycle costing & air system factors
Energy is part of the Eurovent LCC modelThe life cycle cost for the filter is the cost of the:
• Filters• Labour• Energy consumption• Cleaning of ventilation system• Disposal of used filter
= LCC
Clean air with economic benefits
Clean air solutions
kWh/year1000η
tdPqE
q = Air flow (m3/s)
dP = Pressure drop (Pa)
t = Operating time (hours/year)
η = Fan efficiency (0,1 - 0,7)
Energy consumption from air filtration
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Energy Optimisation with Low Energy Air Filters
For example using F7 filter grade as advised by BS:EN13779:2007
Options:
6 pocket 380mm long bag has about 200pa pressure drop initially
12 pocket 632mm long bag has about 85pa pressure drop initially
Over a period of one year allowing for the pressure drop increases as the filters work the estimated save in energy consumption as below.
**Energy £300 the difference in filter price is about £30**
(Ratio 10:1 at 10p per KW/hr.)
For example using F7 filter grade as advised by BS:EN13779:2007
Options:
6 pocket 380mm long bag has about 200pa pressure drop initially
12 pocket 632mm long bag has about 85pa pressure drop initially
Over a period of one year allowing for the pressure drop increases as the filters work the estimated save in energy consumption as below.
**Energy £300 the difference in filter price is about £30**
(Ratio 10:1 at 10p per KW/hr.)
Clean air with economic benefits
Now 60pa with HiFlo2
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Energy consumed by Air Filters
Choosing the right bag filter saves Energy
• Low Energy Air Filters use an optimised design in order to minimise energy consumption with Tapered stitch on pockets.
Poorly manufactured pockets lose performance, use more energy
Clean air with economic benefits
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Office block 8000M2 floor area with 30 full size filter apertures. (3 AHU’s)
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This office block can show an energy saving of £ 14430 per year with the equivalent of 3 AHU’s as shown in the next slide.
Energy consumed by air filters
Example of urban offices block and savings
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Energy consumed by air filters
Energy saving on one AHU volume flow 10m3/s over one year
F7 Bag + G4 Panel F7 Hi-Flo Bag 2.9 M2 Media 9.2 M2 Media
This represents a money saving of £ 4810 per year on this AHU or saving of over 70% on electrical energy.
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Replaced by
See the Energy Saving Opportunity
£14430 per year There are about 50000 buildings with large AC systems CIBSE
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Low Energy Air Filters
Recommended Low Energy Air Filter types
For the best LCC performance
filter in class F7.
Recommended models are
1. HiFlo2 F7
2. Opakfil ES
For compact systems
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1.
2.
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HiFlo2 F7 + HiFlo2 F7 to give F9
How we optimise our air filter selection
Camfil Low Energy Air Filters optimise Energy performance and Air quality
Note: It is required that these F7 filters are mounted in front withdrawal frames to ensure there is no significant air bypassNote: It is required that these F7 filters are mounted in front withdrawal frames to ensure there is no significant air bypass
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HiFlo2 F7 is the optimum single stage F7 solution
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How we optimise our air filter selection
Impact assessment• 200 Buildings• Serviced by 5 air handing units• Each having 10 standard 2 stage apertures
• Number of 2 Stage apertures • 200 x 5 x 10 = 10,000 apertures
• Will make annual Energy savings (considered on above criteria)
• WILL SAVE ENERGY VALUE OVER 2.3 MILLION POUNDS
• EACH YEAR EVERY YEAR
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Filter optimisation gives shortest payback time
Annual Savings – for a 10 m3/s system
Element % Kwh £ Revenue or capital Payback
Upgrade filters 22% 6000 600 Revenue < 3 months
Clean coils 10% 2500 250 Revenue < 6 months
Upgrade fans 35% 60000 6000 Capital> 24
months
Upgrade chillers 40% 136000 13600 Capital> 36
months
Table is prioritised by payback period
Data source – EECO2 Energy Efficiency Consultants (Low Carbon Consultants)
HVAC Filter Specification guidance Design for an efficient future
HVAC Secondary filters to be selected to EN13779:2007 guidelines F7 to F9 class
Air Filters to have been tested in accordance with BS EN779:2012
Eurovent Life Cycle Cost for Air Filters to be used to optimise air filter selection
The Air Filter manufacturer to be independently accredited by Eurovent
Air Filters are to be manufactured under approved quality system BS EN 9001:2000
BS EN13053 advises minimum F7 for single stage AHU systems
Design details
BS EN1886:2007 test limits for air bypass in Air Handling Units mean that FWF front withdrawal filter mounting frames will be required.
Air Handling Units are normally fitted with both Primary and Secondary Air Filters sections minimum length 700mm.long suitable for full length Bag filters.
In general for HVAC applications Microfibre glass Hi-Flo media is recommended as it has a consistent particulate efficiency throughout its working life.
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Low Energy Air Filter Service Packages
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• Low Energy Air Filter AHU filter mounting upgrades
• Complete Low Energy Air Filter installation and maintenance contracts
• AHU filter monitoring with demonstration of benefits
• Additional Duct cleaning and coil cleaning AHU system packages.
Camfil 1st Manufacturer in UK to achieve ISO 50001
European union target
By 2020
-20% energy consumption, -20% fossil fuels,
+20% renewable energies
Camfil Achievements so far :
Tangible reductions in Energy consumption Gas 35%,
Electricity 22%, Diesel fuel 19% Environmental targets Water 12%,
& Waste 17% reductions
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• Labour to replace filters would reduce by half or greater• Waste disposal would reduce by half or greater• Supply chain environmental impact would reduce as well• CO2 reduced substantially• A sustainable option• Case studies for sectors• Consistent performance• www.lowenergyairfilter.co.uk• www.ac-inspections.co.uk
Short Payback time
Significant savings with Low Energy Air Filters© C
AM
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04-1
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The only Eurovent A+ rated F7 filters currently available 2015
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Camfil City M - Air purifier – Clean Indoor Air at point of need
Low Energy Air Purifier
Air Flow Rate 430 M3/hr
6 Fan speeds