1. inner tank SUS304 2B stainless steel. 1.2mm thick. argon arc welding
2. outer tank stainless steel. 0.4mm thick.
3. frame: stainless steel.
4. insulation: 55mm thick polyurethane.
5. thermal conductivity: 0.022w/m.k
6. glass vacuum tubes: three target with coating CU/AL/STAINELSS STEEL.
Whole vacuum tube adopts super borax and silica glass.Absorbrate≥96%,thermal radiationrate≤4%.Resist25mmhail,usinglifelasts15years.
with heatpipe.
7. working pressure: 6 bars.
8. testing pressure: 9 bars.
It has some advantages of no water in tube, no filthy, no broken tube, anti-freeze, unlimited time of the inputting water and pressure operation.
9. tilt angel: optional 20 degree to 45 degree.
10. Daily efficiency:>50%
11.Heat loss coefficient:10W/ m2
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