Post on 05-Apr-2018
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Founded in 1955 by the Swedish inventor Carl Munters. Product areas:
Dehumidification
Evaporative cooling & Humidification
Mist elimination & Water treatment Subsidiaries in more than 30 countries, with approx. 2200
employees.
Representatives and agents in many more countries.
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Munters headquartersMunters companies and officesAgents
Region EuropeRegion AmericasRegion Asia/Australia
(includes Africa,Middle East and Pakistan)
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Certificated ISO9001 since1994
Act in accordance with Agenda 21
Environment in according with ISO14001
and registering in according with EMAS
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Condensation
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Intentionalventilation
Evaporation fromhygroscopicalmaterials
Emission fromcombustion engines
Emission frompeople
Unintentionalventilation
DiffusionEvaporation fromwater surfaces
Fan
H20
Door
Moisture load
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-7-
Corrosion on steel
A process in which a solid, esp ametal, is eaten away and changed bya chemical action, as in the oxidationof iron in the presence of water by anelectrolytic process. A chemicalreaction formula is below :
Fe + 2H2O Fe(OH)2 + 2H+
0 20 40 60 80 100
120
100
80
60
40
20
0
% RH
High humidity
induces corrosion
Corrosion is the gradual destruction of material, usually metal, by chemical reaction
with its environment. In the most common use of the word, this means
electrochemical oxidation of metals in reaction with an oxidant such as oxygen.
Rusting, the formation of iron oxides, is a well-known example of electrochemical
corrosion. This type of damage typically produces oxide(s) or salt(s) of the original
metal. Corrosion can also occur in materials other than metals, such as ceramics or
polymers, although in this context, the term degradation is more common.
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0 20 40 60 80 100
120
100
80
60
40
20
0
1 m Au
% Relative Humidity
No. of corrosion
attacks per cm2
Corrosion on gold plated electronics
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0 50 70 100
50
25
0
3
2
1
0.1
% Relative Humidity
Temperature
C
Growth rate
mm day
Mould Growth
High humidity speeds up mould growth
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Condensation Problems
Due to hot and humid summerenvironment, dew condensation
occurs at floor and wall.
Rapid corrosion due to highhumidity.
Mould and bacteria growth
Reduction of building life
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Corrosion Example
Nato states that all of ammunition storage always have to bemaintained between 50%~60% relative humidity.
The pictures as above show that according to experiment fromGerman air force, one of engines that dehumidifier is not
installed is more corroded than other engines that dehumidifieris installed.
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Corrosion
Missile Corrosion ExamplePatriot Missile
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Principle
1. Process
Air
4.Wet Air
2. Dry Air
3. React Air
1. Process Air- Inside air of shed that should be
dehumidified.
2. Dry Air- Dried air by passing through
desiccant rotor (supply to the shedagain)
3. Reactivation Air- Heated reactivation air collects
moistureabsorbed by desiccant wheel.
4. Wet Air- Leave dehumidifier as wet air
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Outdoor type Dehumidifier
Accident prevention by heat and spark because of installed outside
Optional type (fixed type , mobile type)
Outdoor type IP54 grade
Simple installation and duct work
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Temperature & Humidity data
Army #3 ammunition depot temperature and humidity data(2007))
Humidity
Inside
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
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Solved condensation
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Muntersdehumidifier
Dry air protection of the engine, avionics and electronicsPrevention of internal corrosion and condensation
Saab Gripen is the first aircraft in the worlddesigned with dry air protection in mind.All vital areas in the aircraft are reachedusing an engineered distribution system
Protection of Fighter Aircraft
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The Swedish Air Force has decided to modify the airframe oftheir C-130 Hercules with a dedicated dry air connector toreduce internal corrosion and improve MTBF of the avionics.
Payback: one year.
Protection of Cabin Aircraft
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Austrailian Blackhawk
Test on German Navy Sea King
Swedish HKP-4 (Rolls-RoyceGnome powered CH-46)
Royal Navy SeaLynx
Protection of Helicopters
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Protection of others
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Some parts that corrosion can happen from high humidity environment
such as Steel Box, Pylon Saddle, Pylon Top, Cable attachment, Land
connection can be protected using dehumidifier. This is for protecting
durability of steel components not only can extend the life but also
increase the stability of the structure.
Purpose of dehumidification
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Protection of Cables
Dehumidifier + Turbo Fan
Protection of reinforcement girder
Dehumidifier + Circulation Fan
Photo
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Protection of Anchorage
Anchorage Duct Line
Photo
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Protection of cables Protection of top area
Photo
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Air Flow : 50 ~ 120 CMHDehumidification Capacity : 0.2 ~ 0.9 kg/h
Applications: Condensation prevention for basement & garage Library and Museum
Condensation prevention for pump room & container
Small Unit (M Series)
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Air Flow : 180 ~ 3000 CMHDehumidification Capacity : 1.3 ~ 19.3 kg/h
Applications: Storage & Ammunition Storage Protection of Boiler (Power Plant) Pharmaceutical (Molding, Powder
process)
Condensation prevention for waste
water treatment plant
Condenser option : Able to use certain spacewhere can not be ducting
Medium Unit (ML Series)
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Air Flow : 2700 ~ 9000 CMHDehumidification Capacity : 22 ~ 57 kg/h
Applications: Large Storage Painting & Blasting process Drying process Manufacturing process
Store of Raw materials (10% RH)
Large Unit (MX Series)
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Ammo. Storage
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Partial DH (Active)-6 / United States
M-1A2 Abrams (courtesy Logis-Tech)
Protection of Tank
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Partial Dehumidification ActiveUnited States
M-1A2 Abrams (courtesy Logis-Tech)
Protection of Tank
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Protection of Ambulance
Folded medical field hospital shelter on 4-ton DAF truckShelter manufacturer: Fokker Special ProductsCustomer: Royal Netherlands Army
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Protection of EMP/RFI protected Shelters and Systems
Protection of the Patriot Phased Array Radar.
M-120 in trolleywith basket forflexible ducts andconnectors
Protection of Ambulance
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Protection of hangar
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Expected Effectiveness
Perfect protection of condensation at shed and storage
Corrosion prevention (maintained proper relative humidity according to NATO
& US regulation)
Cut down MTBF (Mean time between failure)
Reduce failure rate of electronic equipments
Reduce budget and labor