Pressurized Solar Collector:
1) Vacuum Tube Information:
Three-target Vacuum Tube Performance and Specification: | ||
Tube structure | All-glass double deck co-axial structure | |
Glass material | High borosilicate 3.3 glass | |
Outer tube diameter and glass thickness | Ø58±0.7mm; Glass thickness 1.6±0.15mm | |
Inner tube diameter and glass thickness | Ø47±0.7mm; Glass thickness 1.6±0.15mm | |
Tube dimension | 58*1800mm | |
Absorptioncoatingproperty | Coating material | CU/SS-ALN(H)/SS-ALN(L)/ALN |
Sediment method | Three Target magnetron sputtering plating | |
Absorptivity | α =0.92~0.96 (AM1.5) | |
Emission ratio | Emission: ε=0.04~0.06(80°C±5°C) | |
Vacuum degree | P≤5.0X10-3(PA) | |
Stagnation temperature (temperature inside of empty evacuated tubes) | 260~300 °C | |
Average heat loss | ULT 0.4~0.6 W/(m2 *°C) | |
Hail resistance | Ø25 mm | |
Pressure-endure | 1MPa | |
Absorber area per tube | 0.08M2 |
2) Collector Specification:
Parameter Table | ||||
Specifications | Content | |||
Product type | SCH-II-12 SCH-II-15 SCH-II-18 SCH-II-20 | |||
Number of vacuum tube | 12 | 15 | 18 | 20 |
Specification of vacuum tube | 58*1800 three-target vacuum tube | |||
Absorption(a) | More than 92% | |||
Emission(e) | Less than 8% | |||
Manifold connections | 1/2' inch | |||
Test pressure | 1 Mpa | |||
Operating fluid pressure | 0.6 Mpa | |||
Max working temperature | -35°C | |||
Insulation material | Polyurethane Foam | |||
Insulation thickness | 40 mm | |||
Distance from tube to tube | 75 mm |
EN12975 Certified Split Pressurized Solar Collector