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You already know that Solar collectors
transform solar radiation into heat and transfer that heat to a medium
(water, solar fluid) Then solar heat can be used for heating water
general purposes, central heating systems or for heating swimming pools.
The
table below provides
you with efficiency comparisons
between different types.
TECHNO page
will provide you with detailed information about
sun efficiency across South Africa and the angle of
collector installation in different areas.
|
Type of Collector |
Conversion Factor |
Thermal Loss Factor in W/m² °C |
Temperature Range in °C |
|
Plastic absorber (uncovered) |
0,82 to 0,97 |
10 to 30 |
Up to 30oC |
|
Flat-plate collector |
0,66 to 0,83 |
2,9 to 5,3 |
Up to 70oC |
|
Evacuated-tube collector |
0,62 to 0,84 |
0,7 to 2,0 |
Up to 110oC |
At
our commercial web we would not go into the
explanation on
how it works (for your personal knowledge you can
find many educational tutorials on the world web pages).
We
can say as well approve that good solar collector
correctly chosen for right size of solar geyser
and of course correctly installed on the roof of
your house will provide you with a lot of hot
water all round year without electricity in use.
If
you choose to retrofit your existing geyser - Welcome to
E-Solar. Out team with special tasks will inspect your
existing geyser as well as
the
hot water piping system and will advise you on the
possibility to use your geyser with
solar system or abound it. Please NOTE, we can
retrofit (convert) any locally made geysers into
solar water heating system, only WE
DON'T GUARANTEE
the same efficiency as with the
new E-Solar geyser. Also the cost of copper
fittings and a geyser retrofit (conversion) kit can be
very costly (depending
on the
type and age of the existing geyser). Maybe it's better
to spend little more and to install a new
stainless steel E-Solar geyser with collector ( full
solar water heating system) and START
to SAVE
your money right the
next day after installation. Choice is
yours. Our solar collectors
will provide you with hot water between 20 and 25 years
with out maintains.
What is the advantage of E-Solar
collectors ?
Most efficient collectors in
Africa
,
-
Fully
s/steel or aluminium and a copper
made with anti-corrosion powder coating. (many
colors to choose from)
-
Adjustable
for flat and inclined roof.
-
Many different sizes to suit any customer’s
needs.
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Can be connected in series for large solar
projects.
-
Water,
wind, storm, cold and heat
resistant.
-
40mm
Hail resistant vacuum tubes.
-
No unsightly tanks on the roof.
-
Environmentally
friendly.
-
Prevents
over 3000kg of green house gasses from being
released into the
atmosphere each year.
-
Pays for itself in approx. 3-4 years. (depending
on the correct geyser and collector size).
-
Save
R 96 000-00
on electricity over 20 years with the
current electricity price (depend on collector and
geyser size)
|
|
Models
|
Collector area
(GROSS m2) |
Collector efficient
absorbing area (NET m2) |
Sun's
Heat
Energy generated
kW/per day |
Vacuum tubes
Qty (pcs) |
For geyser
capacity L |
|
SB - 12 |
2,2 (m2) |
1,32 (m2) |
5,86
kW/day |
12 |
100 |
|
SB - 18 |
3,2 (m2) |
2,00 (m2) |
8,78
kW/day |
18 |
150 |
|
SB - 20 |
3,5 (m2) |
2,20(m2) |
9,76
kW/day |
20 |
170 |
|
SB - 24 |
4,4 (m2) |
2,65 (m2) |
11,70
kW/day |
24 |
200 |
|
SB - 30 |
5,1 (m2) |
3,30 (m2) |
14,64
kW/day |
30 |
250 |
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