- Super dry is the most effective,
easy to use and safe moister absorber
for your containerized goods transportation.
- Environmentally friendly, disposable
and fully recyclable.
- Requires no loading space,
designed to fit perfectly in existing
corrugated container walls.
- More cost efficient than all
other existing products on the market.
- GOODS PROTECTED BY "SUPER
DRY"
- Agricultural Products
: Coffee, Tea, Wood
/ Furniture, Spices, and Food
Products
- Leather Goods : Footwear
and Garments
- Metals & Metal
Products : Machinery
and Auto-parts
- Electronic Goods :
Electrical Appliances, TV and
Computers
- Textiles : Most
Fabrics and Garments
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Fundamentally
there are two different kinds of condensation
: Cargo sweat
This occurs when moving cargo from a cold or temperate climate
to a tropical one and vise-versa. The air containing moisture
or water vapor condenses-out on the cargo or its packing. Container sweat
This is water vapor in the air condensing or forming on the inside
surfaces of the container when moving from tropical or temperate
climates to cooler areas. Fungi, moulds and mildew do
not usually cause any problems below
approximately 55% Relative Humidity. The effect or onset of corrosion is
a function of many variables where humidity
and time are also present. A
fixed humidity level cannot be stated
because of the variables, however the
lower the humidity the better. The type of goods to be
protected must be considered when determining
the amount of water or relative humidity
that needs to be removed. This in-turn
will determine the quantity of 'Super
Dry' poles required in a container to
reduce and hold the humidity at a level
that will not cause damage or deterioration
to the products in the container.
This depends upon :
The weather during the voyage. The duration of the voyage. Type of goods, commodities or materials
in the container. The condition of the container. The sensitivity of the goods. Moisture inherent in the floor and/or
wooden or other types of pallets or
packaging materials. |
 |
The
chart clearly illustrates the problem with
moisture. If the container is stuffed in
90% relative humidity and 30° temperature,
the air can then hold about 27 gram of
water per m3. If the temperature is lowered
to about 0° the air can then only hold
about 5 gram of water. The differently
22 gram will fall out as water and potentially
damage the goods. |
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Humidity
or water in goods loaded into a container.
Generally
the relative amount of moisture / water
in the goods is a factor of the type of
goods and the relative humidity of the
ambient air at the time of loading. Obviously,
tropical air will have a much higher relative
humidity content than say, air in a temperate
climate. Consequently, goods loaded into
a container contain moisture or water and
water vapour in the air. For example, if
there is 5 tons of furniture in the container,
the furniture by itself would usually have
moisture content of between approximately
8 and 25% depending on timber-type and
the drying process used. This equates to
about 400 - 1,250 litres of water. This
moisture, some of which will re-enter
the air inside the container, is the
main source of Condensation. |
 |
| Humidity
or water vapour in the air inside a container.
One 20-foot container has a volume of
approximately 33m3. 1m3 of tropical Asian
air of 90% relative humidity at 32oC
contains 33 grams of water per m3. This
is a total of 1.3 litres of water. (At
55% RH at the same temperature the air
contains 28 grams per m3. By contrast,
1m3 of European air of 100% RH at 0oC
contains 5 grams of water per m3, or
a total of 0.2 litres. At 55% it would
contain 3 grams of water per m3). Once
the ambient air temperature surrounding
the container drops, 1.2 litres of water
can condense on the inside walls and
other surfaces within the container,
i.e. packaging and goods. A relatively
high humidity level corresponds approximately
to ambient air of 25oC at 90% RH (relative
humidity). A low humidity level corresponds
approximately to ambient air of 22oC
at 50 - 60%RH.
For More Information See the SUPER
DRY Website |
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