|
ADVANTAGES
OF SET SOLAR ETC SYSTEMS.
1.
Cost @ 20-25 % less than Flat Plate Collectors systems.
2. Less floor space required for the
same capacity than FPC systems.
3. Quick, easy installation.
4. Due to smaller packing size,
transportation is easier & cheaper.
5. Higher efficiency in cloudy
weather.
6. The systems can be used safely for
hard water / borewell water. No Heat Exchanger is needed
to
prevent
scaling menace causing temperature losses. Glass tubes do not
corrode or choke up. A simple
brush can
clean them periodically.
7. Total system height is lesser than
FPC system. The height of cold water tank required is lesser.
Models
available :-
|
Model
|
No.
of tubes
|
Capacity
LPD
|
|
ETC15
|
15
|
110
|
|
ETC20
|
20
|
150
|
|
ETC30
|
30
|
225
|
All above models incorporate ETC tubes dia. 47mm
x 1500mm long.
SPECIFICATIONS
FOR SET SOLAR ETC SYSTEMS
A.
Evacuated Glass Tubes
|
1
|
Configuration
|
Two Concentric Borosilicate Glass tubes
|
|
2
|
Length
|
1500 mm
|
|
3
|
Outer Tube Diameter
|
47 mm
|
|
4
|
Inner Tube Diameter
|
37 mm
|
|
5
|
Glass thickness
|
1.6 mm
|
|
6
|
Thermal expansion
|
0.000033/ deg. C.
|
|
7
|
Transmittance of cover tube
|
0.92 average
|
|
8
|
Absorptive coating
|
Graded Al-Ni/ Al; Magnetron sputtered
|
|
9
|
Absorptance
|
0.92 average
|
|
10
|
Emittance
|
Less than 0.07
|
|
11
|
Vacuum
|
P Less than 0.005
|
|
12
|
Typical stagnation temperature
|
250 deg. C.
|
|
13
|
Heat loss coefficient
|
Less than 0.85 W/sq. m./ deg. C.
|
|
14
|
Impact resistance
|
Withstand Hailstorm of 25 mm dia.
|
|
15
|
Expected tube life
|
15 years
|
|
16
|
Weight
|
@ 1.35 kg
|
|
17
|
Warranty
|
5 years subject to conditions
|
|
18
|
Number of tubes
|
14 per 100 LPD
|
B.
Hot Water Storage Tank
|
1
|
Capacity
|
Equal
to system capacity
|
|
2
|
Material
|
SS
304 Non-magnetic or Mild steel with Ceramic/ Glass
Coating from inside
|
|
3
|
Insulation
|
PUF
55 mm thick
|
|
4
|
Cladding
|
Zn-Al
/ Aluminum plain/ stucco finish sheets 24SWG
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