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

FIL

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04-1

7

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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