fresh air filtration - zenodo

Fresh Air FiltrationReaching the Finish Line

September, 2019

David SteinGCAQE

Aircraft Cabin Air Conference

© Copyright 2019. Pall Corporation.

Cabin air quality control through advanced filtration and sensing.

PUREcabin Concept

PUREcabinPC320

Contaminant Sensing and

Informing (CSI)

Fresh AirMist and VOC

Eliminators (MaVE)

Advanced Cabin Air Filter

(ACAF) for Recirculation

Bleed Air Sensor (BAS)

Cabin Air Quality Sensor

(CAQS)

Cockpit Filter Unit (CFU)

PALL Clean Air Technology(PALL CAT)


How we Finished the 2017 Conference

Available End 2018


Boeing 757 cockpit filter in service

MORE INFO

A320 A-CAF launched

MaVEproject launch

Solutions take partners: Airlines, OEMs, and Pall.

Project Timeline

2010 2014 2015 2016 2017 2018 2019 2020

First P

all/A

irfram

er

OEM mee

ting

On-airc

raft M

aVE tes

t

First

on-ai

rcraft

flow

measu

remen

ts

First o

n-aircr

aft

MaVE

fit an

d flow ch

eck

First

Pall/ECS O

EM

meetin

gCust

omer UX works

hop

and desi

gn revi

ew

Product launchAirlines request total air filtration system

Series

of additio

nal

ground tests

Ground test

and

corre

lation to

analy

tical

model

Modificati

on to

design co

ncept

Aircraft Integration


System Interactions

Detailed ECS knowledge essential to incorporating additional pressure drop filtration systemOE support on system performance and interactions critical


Design Evolution

Pall Clean Air Technology (CAT) filters fresh air provided by the engines or APU before it enters the cabin.

To date, work has focused on a solution that requires a filter to be installed directly upstream of the mixing

chamber, with an additional high temperature filter to remove particulate and VOC from the trim air.


Constraints

Based on a typical PAX loading and considering atmospheric conditions at a number of airports worldwide, the air temperature in this

location will typically be at or below 32°F with large quantities of free water being produced.

The system has to:• Be able to manage high levels of free water and icing• Must not negatively impact the performance of other system components• Must not negatively affect the cabin heating and cooling performance• Must meet all the CS-25 certification requirements

Key Design Consideration


Performance Requirements

Integration in the aircraft (critical to field a solution)

Meet the ultimate goal of reducing fume events and odors


Odor Events Come with Ultra-fine Particles

0

10000

20000

30000

40000

50000

60000

70000

80000

90000

100000

00:00:00 00:14:24 00:28:48 00:43:12 00:57:36 01:12:00 01:26:24 01:40:48

UFPs

par

ticle

s/cc

Flight Time

ACP Packs ONafter take-off

Climb power re-applied after level

APU

or E

ngin

e ON

APU

on a

fter l

andi

ng

Flight 1

Flight 2

Indoor air

Major roads

Airports

250,000

Decreases UFPs by 90%

MaVE

Levels at measured at:Airport ~ 250,000 particles/cm³Indoor air ~ 4,000 particles/cm³Major roads ~ 20,000 particles/cm³


Particulate Filtration

Ultrafine particulate (UFPs) – PM0.1- Often condensates of hydrocarbons- Elevated UFP levels during fume events

Latest Technology Filter Membrane

Media 1

Media 2


Proven Experience in VOC Removal

0.4

0.5

0.6

0.7

0.8

0.9

1

0 500 1000 1500 2000 2500 3000 3500

VO

C Fr

acti

onal

Rem

oval

Eff

icie

ncy

Time (s)

SyntheticCarbon

NaturalCarbon

VOC Removal Efficiency: Synthetic vs. Natural Carbon 100 PPM limonene

0 1000 2000 3000 4000 5000 6000 7000 8000

0

10

20

30

40

50

60

70

80

90

100

0

10

20

30

40

50

60

70

80

90

100

0 500 1000 1500 2000 2500 3000 3500 4000

Flight Hours / A330

Rem

oval

Effi

cienc

y / %

Specific Volume of Air Treated / m³ Air per gram Carbon

Flight Trial 1

Flight Trial 2

Flight Trial 3

In-Cabin Performance Dodecane Challenge at 10 ppm Face Velocity 1.1 m/s


A-CAF and MaVE in Combination

A-CAF (Advanced Cabin Air Filters)

Representative MaVE


Validated Simulation ModelsCabin Air Quality Simulation

Through numerous ground tests and simulating fume events we validated our simulation analysis tool to enable optimization of the VOC adsorbent.

Product Performance


Test Capability

Replica of ECS system enables:Pressure TestingVOC testsWater TestsIcing Tests


Key Performance Parameters

Integration in existing aircraft with minimum and acceptable impact

on performance of ECS and associated equipment

Removal of contaminants that could be present in the fresh air supply

before they reach the cabin or cockpit

o Validation in the laboratory

o In aircraft (film)

Service life aimed to match existing A-CAF

o Will be confirmed through service evaluation


Aircraft Ground Test

Because of technological developments related to the products, systems and/or servicesdescribed herein, the data and procedures are subject to change without notice. Pleaseconsult your Pall representative or visit www.pall.com to verify that this informationremains valid. Pall Corporation has offices and plants throughout the world. For Pallrepresentatives in your area, please visit our website.

© Copyright 2019. Pall Corporation, Pall and are trademarks of Pall Corporation.® Indicates a trademark registered in the USA.

Better Lives. Better Planet and Filtration. Separation. Solution.SM are service marks of Pall Corporation.

US: 10540 Ridge RoadNew Port Richey, FL 34654Telephone +1 727 849 9999 Toll free US +1 800 933 3111

UK: Portsmouth Telephone +44 (0)23 9233 8000

THANK YOU

Pall Aerospace

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