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Fact Sheets
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Why Stainless
Steel?
The Storage
Cylinder - the
part you never
see - is the
most important
part of your hot
water system.
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Marine
Grade
316
Stainless
Steel
·
Up to
100°c
with no
appreciable
effect
on
corrosion
resistance
properties.
·
Single
composite
corrosion
resistant
material
which
does not
deteriorate
over
varying
temperatures.
·
Grade
316
Stainless
Steel -
A
natural
barrier
to
corrosion.
·
No Adode
- No
Hydrogen
Gas
Generation
Why Use
Stainless
Steel?
·
Natural
barrier
to
corrosion.
·
Customer
Safety.
·
Consumer
friendly.
·
Minimal
maintenance.
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Mild
Steel
Artificially
Lined*
With
Sacrificial
Anode
·
Lining
starts
to
dissolve
in water
temperature
of 70°c.
·
Artificially
lined
onto
mild
steel
with
variable
rates of
expansion
as the
temperatures
alter.
(Causes
crazing
of the
artificial
lining).
·
Mild
steel
cylinder
relies
jointly
on
artificial
lining
and
sacrificial
anodes,
which
require
expensive
regular
maintenance
to keep
the
corrosion
at bay.
·
Anode
(magnesium
and
aluminium)
continuously
produces
hydrogen
gas
which
accumulates
in
cylinder
during
periods
of non
use
(holidays).
Two
weeks
away
from
home is
enough
to
produce
hydrogen
gas in
dangerous
proportions
capable
of
causing
serious
or fatal
explosions
in
household
electrical
appliances
(washing
machines,
dishwashers).
Documentation
of such
explosions
is
available.
Such is
the
extent
of the
problem
that the
"Australian
Standards"
has
brought
the
subject
into its
publications
. (ref:
AS2712
and AS
1056).
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Australis Solar Collector
(Technical Data)
This collectors is the base
model collector of our solar
collector range. It's design is
tried and proven over many years
of use and it is designed for
both residential (passive) and
commercial (active) applications
where capital costs are
critical.
Absorber Plate
This is a 0.8 mm thick sheet of
aluminium. It's solar
performance is comparable to
copper because it is 400%
thicker. It is coated with a
polyester matt black paint
designed for prolonged exposure
to sunlight without degradation.
It has the following
performance.
Absorbability = 0.973
Emittance is 0.27
Casing
Constructed from 0.4mm polyester
power-coated zinc plate and
aluminium to provide total
weather-resistance and robust
handling capabilities. It is
plastic coated for protection
and uses 3mm rubber sealing to
provide a sealed environment.
Air vents are provided in the
injection moulded panel corners
to prevent condensation.
Tubing
Designed for either water or
glycol, these are copper tube
conforming to AS1432. The 25mm
diameter headers and 12.7mm
risers are of Type A copper and
the 7 risers are spaced at 136mm
and mechanically bonded to the
risers with a layer of thermal
paste to provide complete heat
transfer between plate and
tubes. The matrix is designed
for maximum operating pressure
of 850 kPa and uses SBA 105
silver solder joints.
Glazing
Tempered, low iron Solatex glass
is used. It is 3.2mm thick and
is hail resistant. It is
specifically designed for solar
applications and has a
transmittance of 0.88 and an
iron oxide content of only 0.04%
or less
Connections
These are 33mm diameter external
brass compression fittings that
conform to AS 1565. Each fitting
accepts a 25mm copper tube and
prevents the ingress of water
inside the casing.
Insulation
High density fibreglass panels
are used to insulate the bottom
and sides of the collector to
minimise heat loss. It is 38mm
thick has a density of 32 kg per
square meter.
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