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| Solar water heater |
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| Solar Air Heating System |
| • Model: SFG |
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| Vacuum tubes |
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| Boiler with one coils |
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| Boiler with two coils |
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| Special boilers |
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With a coil and casing type ВВ S1M
(80-200L) |
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Industrial boilers with two coils type SB S2 (1,500-2,000L) |
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Industrial boilers with one coil type SB S1 (1,500-2,000L) |
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Industrial boilers type SB EL
(1,500-2,000L) |
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Industrial water containers without a coil type HSE (2,500-10,000L) |
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Industrial water containers with one U-shaped coil type HSU-1 (2,500-10,000L)
HSU-1 (2,500-10,000л) |
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PRODUCTS Solar tubes Model: SFVA |
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| SFVA series – All-glass Evacuated Solar Collector Tube |
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| Description |
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| Payment Terms |
- cash;
- bank transfer;
- T/T, L/C |
| Supply Ability |
2,500 sets per month |
| Model Number |
SFVA |
| Brand Name |
Vacuum tube |
| Minimum Order |
1 set |
| Delivery Time |
8 weeks |
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| Features: Technical Specifications |
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| Length |
1500mm |
1800mm |
| Outer tube diameter |
47mm |
58mm |
| Inner tube diameter |
37mm |
47mm |
| Weight |
1.3kg |
2.2kg |
| Glass thickness |
1.6mm |
1.6mm |
| Material |
Borosilicate Glass 3.3 |
Borosilicate Glass 3.3 |
| Absorptive coating |
Graded A1/N/A1 |
Graded A1/N/A1 |
| Vacuum degree |
P<5*10 -3 Pa |
P<5*10 -3 Pa |
| Thermal expansion |
3.3*10 -6 /°C |
3.3*10 -6 /°C |
| Insolation Temperature |
>200°C |
>200°C |
| Absorptance |
>93% |
>93% |
| Emittance |
<8% |
<8% |
| Heat loss |
<0.8W/(m2°C) |
<0.8W/(m2°C) |
| Maximum strength |
0.8Mpa |
0.8Mpa |
| Resist cold |
-35 °C |
-35 °C |
| Resist hailstone |
Ø 25mm |
Ø 25mm |
| Resist wind |
30m/s |
30m/s |
| Start-up temperature |
<=25°C |
<=25°C |
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| Item No. |
Specification |
| Диаметър на слънчевата тръби |
Дължина на слънчевата тръби |
| SFVA4715 |
Ø47 mm |
1.5 M |
| SFVA5818 |
Ø58 mm |
1.8 M |
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