purple gold solar vacuum tube 58*1800 mm ( popular in vietnam market )
Why client choose purple gold color vacuum tubes ?
because the surface on vacuum tube is purple gold color . and it looks more attractive .
they have same solar absorbing efficiency .
purple and blue , which color do you prefer ?
TECHNICAL PARAMETERS & SPECIFICATIONS
Name | purple gold solar vacuum tube 58*1800mm
|
Structure | All-glass double-tube co-axial structure |
Glass material | High borosilicate glass 3.3 |
External Pipe Diameter & Thickness | Ø=47±0.7mm&=1.6mm, Ø=58±0.7mm&=1.6mm, Ø=70±0.7mm &=2.0mm, |
Internal Pipe Diameter & Thickness | Ø=37±0.7mm &=1.6mm, Ø=47±0.7mm &=1.6mm, Ø=58±0.7mm &=1.6mm, |
Pipe Length | 800mm, 1200mm, 1500mm, 1600mm, 1800mm,1900mm, 2000mm, 2100mm. |
Coating layers | Cu/SS-ALN (H)/SS-ALN (L)/ALN |
Coating method | Three target magnetron sputtering plation |
Thickness | 1.6mm/2.0mm/2.2mm |
Specific absorption | as=0.93~0.96(AM1.5) |
Emission ratio | Σh=0.04~0.06(80°C±5°C) |
Vacuum tightness | P≤5.0×10-3Pa |
Idle Sunning Property Parameters | Y= 260 ~ 300m². °C/KW |
Solar Radiation for Obtaining a Preset Water Temperature | H≤3.7 MJ/ m²(Ø47), H=2.9~3.2 MJ/ m²; H≤4.7 MJ/ m²(Ø58), H=3.7~4.2 MJ/ m². |
Average Heat Loss Coefficient | ULT=0.4~0.6W/ (m². °C) |
Pressure-Endure Ability | 0.6Mpa |
Hail resistance | Ø25mm/ Ø40mm |
Lifetime | 15 Years |
Color | purple golden |
we have stock for both blue and purple vacuum tubes .
This is our raw material tubes , we are using the best quality to make sure our vacuum tubes run a longer life ,more than 15 years .
This process is for cutting the outer tube by very high temperature .
this is evacuation process , our workers has more than 10 years experience on this job . the tubes are evacuated by high temperature and also the vacuum degree is tested and controlled by computer .
Coating is always the most important process for vacuum tubes production . we coat the tubes in 1 hour by coating machine . the three target coating material is CU/SS/ALN .
three target coating machine as below :
Our MOQ is 100 PCS . if you want to test our quality , we can send you MOQ for testing . the glass vacuum tubes are very fragile ,so we pack them with carton box and wooden box .
we attend many bussiness expo every year .
below is our expo booth in september ,2014 in new delhi ,india . we alaso visit Vietnam twice every year to meet our clients in Ho chiminh , Hanoi . Vietnam .