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Product detail:
How solar water heating system works:
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.
Specification of pressurized solar water heater:
| Model | JPH-20 |
| Number of tubes | 20s |
| 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 | 200L |
| Emittance | 7% (100 °c) |
| Insulation | Polyurethane 55mm |
| Solar collector area | 1.63m2 |
| Vacuum | P < 0.005 Pa |
| Stagnation temperature | 221 °c |
| Heat loss | 0.8W/m2 |
| Testing pressure | 11bar |
| Working pressure | < 6bar |
| Title angle | 20-45 degree |
| Inlet & outlet | 1/2" / 3/4" |
| T/P valve port | 3/4" |
| Frame | Coated galvanized steel or Aluminium alloy or Stainless steel |
- Vacuum tube: Twin-glass with three target coating of ALN/AIN-SS/CU, 58X1800mm
- Heat pipe : length: 1.7m, thickness:0.6mm, TU1 copper
- Outer tank: Colored steel or stainless steel, thickness: 0.4mm
- Inner tank: stainless steel 304-2B or 316L, thickness: 1.2 mm -2.0mm
- Installation angle: 20/30/38/45 degree
- Insulation layer: Polyurethane 55mm, density: 42Kg/m3
- Diameter of inner tank: 365mm;
- Diameter of outer tank: 470mm;
- Distance for tube to tube: 75mm.
