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EVACUATED TUBE COLLECTORS |
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CHARACTERISTIC/ SPECIFICATION |
UNITS |
47 Diameter Tube |
58 Diameter Tube |
MATERIAL |
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BOROSILICATE GLASS 3.3 |
BOROSILICATE GLASS 3.3 |
SELECTIVE COATING MATERIALS |
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AL/SS/CU |
AL/SS/CU |
TUBE LENGTH
|
mm |
1500 |
1800 |
OUTER TUBE DIAMETER
|
mm |
47 |
58 |
INNER TUBE DIAMETER
|
mm |
37 |
47 |
GLASS THICKNESS
|
mm |
1.6 ± 0.15 |
1.6 ± 0.15 |
ABSORPTION COEFFICIENT |
PCT |
≥0.93（AM1.5） |
≥0.93（AM1.5） |
EMISSION COEFFICIENT |
PCT |
≤0.065（80±5） |
≤0.065（80±5） |
TRANSMISION COEFFICIENT (τ) |
PCT |
≥0.890（AM1.5） |
≥0.890（AM1.5） |
MAX STRENGTH
|
MPa |
0.8 |
0.8 |
VACUUM PRESSURE
|
Pa |
≤5.0×10-3 |
≤5.0×10-3 |
WEIGHT OF A SINGLE TUBE |
Kg |
1.3 KG |
2.2 KG |
THERMAL EXPANSION
|
Degree |
3.3*10 -6 / Degree |
3.3*10 -6 / Degree |
INSULATION TEMPERATURE |
Degree |
200 |
200 |
RESIST COLD
|
Degree |
-35 |
-35 |
RESIST HAILSTONE
|
mm |
25 |
25 |
START-UP TEMPERATURE |
Degree |
<=25 |
<=25 |
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ETC TUBE SYSTEM SPECIFICATIONS
320 for SS inner tank /420 for outer aluminium cladding for Dia 47 Tube. 350 for SS inner tank /450 for outer aluminium cladding for Dia 58 Tube.
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PU Thickness : 50mm
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Colour : Black side caps and yellow powder coated aluminium sheet for outer covering with anti dust rings.
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TIG Welded Out let of 1” inch on both sides of tank.
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Inlet & Outlet of 1 inch.
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Heater provision of 1 1/4th inch on hot water outlet side.
FRAME
EVACUATED TUBE
Size of Tube :47 x 1500MM. / 58 x 1800MM
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Coating :Triple Coated (SS-Al/Cu)
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Colour of tube :Blue
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Specification sheet for tube attached.
PACKING
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