effective tubes, high cold tube, high temperature special efficiency tube
outer tube diameter: 58/47mm
inner tube diameter: 47
Our solar collector tube can start up fast and collects solar energy fully, there is no need to wait and the water is available immediately, high level vacuum ensure operation under cold weather, and the unique super copper surface allowing lower reflection and minimal heat loss, the current products mainly include: diameter: 47/58mm, and the length is 1800mm, but we can also provide products as your request. Long time warranty for 15 years.
We are looking forward to establish business relationship with you!
Solar collector technology index
Index name | China national standards (GB/T 17049-2005) | |||
Material | sun transmission ratio | High borosilicate 3.3,transmission ratio r≥0.89(AM1.5 ISO9806-1:1994) | ||
Section | 1.5 mm the following section melanoma tumors 10mm x, namely, not dense 10mm range of not more than 2, the whole pipe, not more than 2.5 mm in the quarter of not more than five melanoma, more than 2.5 mm section of tumor doesn't allow exist. | |||
stones | The stones shall not 1mm below stone dense, namely 10mm x 10mm range of not more than 1, the whole pipe, not more than 5, the stones shall not be a crack around, more than 1mm stone does not allow exist. | |||
Absorption | α≥0.92(AM1.5) | |||
Hemisphere | εh≤0.08(80°C±5°C) | |||
Getter | conform to 9505 GB/T
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Empty bask in performance parameters | G≥800w/m2,Empty bask in performance parametersY=(ts- ta)/G,≥20m2 C/km | |||
Frowsty bask irradiation amount | G≥800w/m2,47tube≤3.7MJ/m2 58tube≤4.7MJ/m2 | |||
Average heat loss coefficient | ≤0.85w/(m2) °C | |||
Resistance to thermal shock | 0 °C mixture of ice & water under 90 °C with no more than three times repeatedly alternately hot water impact without damage.
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Resistance to pressure | should be able to withstand the pressure of 0.6 MPA
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Mechanical impact resistance | can bear the 30mm steel ball diameter, 450mm place free fall in height, vertical hit and no damage.
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Vacu-um perfo-rma-nce | Vaccum degree | ≤5×10-2Pa | ||
Vacuum quality | glass tube in 350 °C maintain within 48 hours; getter mirror axial length disappeared more than 50% does not rate
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Appe-ara-nce and size | the injured | cover glass tube surface stroke length is more than a slight scratches accumulative total length 1/3
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Membrane layer | The selective absorption membrane layer coating can not have besmirch, peeling or fall off.
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Obviously becomes shallow area | membrane layer color becomes shallow area should be no more than 50
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Supporting | supporting thing should not obvious place decently, don't angry, loosened.
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Sealing mouth | sleek, no ankylosis, no glass accumulation, end face and inside, cover glass surface should be smooth and even thickness, no bell shape and obvious deformation.
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length tolerance | length error shall not be more than nominal size L + length 0.5% | |||
Bending degree acuities | ≤0.2% | |||
Outofroundn-ess | Analyse the largest and smallest size cross-sectional than no greater than 102
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Sealing length | S≤13mm | |||
