The essence of comfort

Zonal Drying™ SystemThe essence of comfort

How to save fuel, drop weight and improve the environment.

svart = 85%PMS 7545

turkos C 93M 0Y 24 K 0PMS 313

ljus-blå, 40% av:C 100M 28Y 24K 0PMS 277

During flight the extreme of temperature creates con-densation at an alarming rate. Each passenger exhales an average of 100 gram of water per hour. During a long-haul flight this adds up to a considerable amount, causing damage to the insulation, and nuisance to both passengers and crew.

Condensation can increase the aircraft weight by over half a ton, depending on the number of passenger, type of operation, aircraft and climate zone. This extra load results in higher fuel consumption, affecting the envi-ronment in a negative way.

The good news is that there is a way to drop dead weight, save fuel, reduce emissions and make people on board more comfortable – all in one go. Turn the page and see how!

As well as outside.

Inside the aircraft.

How to lose 200 kg or more?

Add 29!

The Zonal Drying™ System prevents condensation in modern aircraft by combating the root cause. Less condensation means less weight resulting in lower fuel consumption and emissions. And, in the long term, increased lifetime of aircraft components and insulation. The equipment required for a Boeing 737 NG aircraft weighs only 29 kg.

svart = 85%PMS 7545

turkos C 93M 0Y 24 K 0PMS 313

ljus-blå, 40% av:C 100M 28Y 24K 0PMS 277

Whobenefits?

The PlanetLower fuel consumption. Less emissions. The less fuel burned the cleaner the atmosphere. Imagine saving up to 65 tons of CO2 – per aircraft per year! – as is the case with a narrow-body aircraft. Or up to 160 tons with a wide-body aircraft in regular service. The calculations further back also show significant reductions of nitrogen oxides, hydrocarbons and carbon oxide.

The airline$$$ - Better total economyOur calculations, based on experience from actual installations and reports from operators of our systems, show that the payback period for a Zonal Drying™ System in an aircraft can be as short as 1 to 2 years, depending on the type of operation and aircraft.

The payback period is shortest for operators with high aircraft utilization and high passenger load factors. The values of operational reliability, passenger comfort and the effects on the environment are not even taken into account.

In around two years, our system will have paid for itself. In twenty, it still saves you money.

Corrosion mainly affects the areas around aircraft windows, doors, antennas and belly structures. Floor beams and electrical connectors are also exposed. This means extra expense for the airlines, since they often have to replace structural parts at D-checks. If moisture is removed, the risk of accumulating corrosion on the airframe is minimized.

Longer life cycle.

Many of the electrical wires in the aircraft are located in the space between the inner lining and outer skin – right where condensation accumulates. This triggers warning signals and short circuits in sensitive equip-ment, resulting in delays and component replacements – if not worse.

The airplaneLess electrical failures.

Inside an aircraft, rain should be the last thing to worry about.

During take-off and landing, passengers and crew are often exposed to what is commonly called ”rain in the plane”. Especially during descent or take-off, when water seeps along fissures in ceiling panels and people on board are exposed to dripping water. This is caused by water floating on surfaces on top of the overhead panels. It is condensed water that has not been drained out of the aircraft. This is not news. The news is that you can actually prevent this from happening.

PassengersNo "rain in the plane".

Condensed water permeates the insulation making it heavier and significantly reducing its insulation effect. When people on board feel cold draughts at windows and doors, this is one of the explanations. Also, since wet insulation is the perfect environment for mould, fungus and mildew, passengers as well as crew and maintenance staff may develop allergic reactions.

During maintenance, parts of the insulation may have to be dried or replaced. This entails extra costs for the airlines, while still only providing a temporary solution to the problem – once the aircraft re-enters service the insulation will soon be soaked again.

The crewEffective insulation.

Mould. The only thing that benefits from wet insulation.

The competitive advantage.In terms of fuel.Up to 52 tons per aircraft per year.*

In environmental terms.Up to 160 tons of CO2 per aircraft and year. Not to mention other emissions such as: NOx, HC and CO.*

In maintenance terms.Less downtime due to repairs, man-hours and material costs substantially reduced.

In terms of competitive strength. Better climate on board. Better work environment. Better adherence to flight schedule. *in case of wide-body aircraft

No matter how you look at it – installing a Zonal Drying™ System gives you a competitive advantage over airlines who keep their ”rain in the plane”.

• Carbon dioxides (CO2). Contribute to the greenhouse effect that results in an increase of the earth’s average surface temperature. • Nitrogen oxides (NOx). Contribute to acidification and over fertilization of land and water.• Hydrocarbons (HC). Ground-level ozone that is created by reaction with sunlight can harm vegetation and affect human health. • Carbon oxide (CO). Detrimental to human health.

A human being exhales approx. 10 cl water per hour. Imagine how many decanters you can save on an overseas flight!

CO2 65 ton NOX 190 kgHC 35 kgCO 460 kg

reduced emissions – per aircraft per year.

65 tons CO2*21 tons less fuel consumption*

Example Boeing 737NG

Example Airbus A330-200

Can save

CO2 165 ton NOX 630 kgHC 1 kgCO 85 kg

reduced emissions – per aircraft per year.

165 tons CO2*52.5 tons less fuel consumption*

Can save

*Based on 5,000 flight hours per year. 300 kg less weight gives a fuel saving of 10.5 kg per flight hour with a 90% load factor, fuel efficiency factor of 3.5%. Source: www.luftfartsverket.se (Figures are approximate)

*Based on 3,000 flight hours per year. 200 kg less weight gives a fuel saving of 7 kg per flight hour with a 90% load factor, fuel efficiency factor of 3.5%.Source: www.luftfartsverket.se (Figures are approximate)

Let's calculate!

CTT Zonal Dryer

Our system takes care of the root cause and is not a temporary fix.

The Zonal Dryer principle

The Zonal Drying™ System effectively removes moisture using established industrial technology. The system takes air from the crown area or cargo area and feeds it through zonal dryer units to remove moisture. It then circulates the dry air between the cabin and the outer skin of the aircraft using a specially designed piccolo duct. This lowers the dew point in the crown area preventing the condensation process from occuring, thus keeping the insulation blankets dry.

Depending on aircraft type, the Zonal Drying™ System consists of one or more zonal dryer units installed at strategic points in the aircraft. Each unit features a slow-moving rotor impregnated with silica gel.

svart = 85%PMS 7545

turkos C 93M 0Y 24 K 0PMS 313

ljus-blå, 40% av:C 100M 28Y 24K 0PMS 277

A 4-pole inlet fan feeds two separate airstreams into the rotor. The rotor absorbs humidity from one of the airstreams and processes the air, before releasing it as dry air.

Electric heaters warm up the second air stream before it enters the rotor. Passing through the rotor, the heated air absorbs humidity collected from the processed air. The regenerated air is then fed into the aircraft re-circulation system or dumped overboard through the out-flow valve.The system is activated whenever the aircraft is powered up. Furthermore, it is run as on condition with an MTBF of 15 000 flying hours.

Moist air

Dry air

Rotor motorHeater

Air intake

Absorption rotorCTT Zonal Dryer

Fan

Installation layoutssvart = 85%PMS 7545

turkos C 93M 0Y 24 K 0PMS 313

ljus-blå, 40% av:C 100M 28Y 24K 0PMS 277

A319Installation with one Zonal Dryer.

Boeing 757-200Installation with one Zonal Dryer.

Boeing 737-700Installation with one Zonal Dryer.

Aircraft type Total system weight

Number of dryers STC

A320 22,0 kg 1 EASA and FAA

B737-800 28,7 kg 1 EASA and FAA

B757-200 28,7 kg 1 EASA and FAA

Power Consumption per Zonal Dryer

DC current 0,3 amps

AC current 2040VA (pf 0,97)

AC inrush current 14,4 amps/phase

AC current 6,5 amps/phase

For Airbus and Boeing Wide body Aircrafts or other types of aircrafts please contact us for more information.

The dry air is being distributed throughout the crown area using a piccolo ducting system

Wide Body Installationin Crown Area

Regenaration (humid) air outletclose to the recirculation filter or

outflow valve

Narrow Body InstallationBelow Floor

Wide Body installationZD in Crown Area

Narrow Body installationZD in Below Floor

Bombardier CRJ200

737-700/-800-/900

A319/A320/A321

737-300

757-200/-300 767-200/-300

A330 -200/-300 , A340-200/-300/-500/-600 777-200/-300

787 A350XWB

SFE option on Airbus A350 XWBThe Zonal Drying™ System is avalible on the Airbus A350 XWB.

Standard on Boeing 787The Zonal Drying™ System is standard on the Boeing 787, i.e. it is installed in all aircraft of this type.

BFE on Boeing 737The Zonal Drying™ System is BFE equipment on the Boeing 737NG-700/800.

CTT Systems AB (publ.) Box 1042 SE-611 29 NyköpingPhone: +46 155-20 59 00 Fax: +46 155-20 59 25 E-mail: ctt@ctt.se www.ctt.se

Peter LandquistVP Sales, Marketing & Customer Support

Phone: +46 (0)155 20 59 02 | Mobile: +46 (0)70 665 2445 | E-mail: peter.landquist@ctt.se

Anton NöffkeDirector Sales, Marketing & Customer Support - Asia Pacific & Middle East Representative

Phone: +60 (0) 12 525 28 64 | E-mail: anton.noffke@ctt.se

Per GustafssonSales, Marketing & Customer Support

Phone: +46 (0)155 20 59 03 | Mobile: +46 (0) 70 214 89 05 | E-mail: per.gustafsson@ctt.se

For additional information, please contact:

Humidity in balance.Our mission is to create a better climate inside the aircraft, thereby providing economic benefits to the air-line. The key is to balance humidity levels on board. Our concept increases passenger wellbeing, contributes to a better environment and improves airline economy, simultaneously. We call it ”humidity in balance”.