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Solar collector evacuated tubes collect and convert sunshine energy into thermal energy, which is transferred to the central heat pipes in the tubes through the aluminum fins bridging the tube inner surfaces and the heat pipes. The copper heat pipes have tiny amount of purified water sealed in them at depressurized condition.
When heated, the water inside the heat pipes vaporizes at low temperature (about 30oC). The vapor (steam) rises to the pipe tips inserted into the water contained in the tank. Vapor is cooled down and becomes condensate falling to the bottom of the pipes. By continuously circulating this way, heat is carried from outside to the water inside the tank.

Schematic diagrams.

| Model | JPH ( Keymark EN-12976 certified) |
| Number of tubes | 10,12, 15, 18, 20, 24, 25, 30 tubes |
| Length of tubes | 1800mm |
| Outer tube diameter | Φ58mm |
| Tube thickness | 1.6mm / 2.0mm/2.2mm |
| Tube thermal expansion | 3.3 x 10-6 °c |
| Absorptive coating | AL/N/AL-SS/CU |
| Absorbency | > 92% (AM 1.5) |
| Volume capcity | 100liters |
| Emittance | 7% (100 °c) |
| Insulation | Polyurethane 55mm |
| Solar collector area | 1.623m2 |
| Vacuum | P < 0.005 Pa |
| Stagnation temperature | 221 °c |
| Heat loss | 0.8W/m2 |
| Testing pressure | 11bar |
| Working pressure | < 6bar |
| Title angle | Multifunction frame on flat or slope roof |
| Inlet & outlet | 1/2" or 3/4" |
| T/P valve port | 3/4" |
| Frame | Stainless steel |





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A QC team with more than 10years’ experience and technical personnel. o ensure 100% products checking.
Material: Strictly control of material purchasing and using, meet international requested standards
Semi-finished products inspection: Product inspection before 100% finished, such as visual inspection, leaking and pressure testing, comprehensive safety test and so on.
Production line test: With work team or data engineer who will inspect machines and lines at fixed period.
Finished product inspection: Quality and property test before products are packed and loaded.
Quality Guarantee
1.We provide 5years warranty of products and shipment with 1% spare parts
2.We can send the parts free on condition that there is any breakdown with convincing evidence
1% spare parts include:
- Wiper scraper seal
- Tube holder
- Screws & screw caps
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