الوصف
Vacuum Tubes:
Description:
All glass vacuum tubes are the key component of solar collectors.
The evacuated tube is similar to a conventional Dewar flask and
consists of two borosilicate glass tubes, a glass with high
chemical and thermal shock resistance. The outer side of the inner
tube is coated with a sputtered solar selective surface. This
coated inner tube is closed at one end and sealed at the other end
to the outer tube. The annular space between the outer tube and
inner tube is evacuated to virtually eliminate heat loss by
conduction and convection.
MegSun successfully developed the innovative Advanced Solar
Selective Coatings in commercial scale, which achieve the highest
thermal efficiency and good thermal stability. Solar selective
coatings absorb most solar radiation while simultaneously
suppressing the thermal emittance loss from coating surfaces. They
vary mainly in their optical property and thermal stability.
Excellent results have been obtained by using DC magnetron
sputtering technology. A solar absorptance of 0.*4 - 0.*6 with an
emittance of 0.*4 - 0.*6 at **0℃ has been achieved.
Features:
• High solar-thermal conversion and low heat loss
• Stable advanced coating up to **0℃
• Long time warranty to *5 years
• High level vacuum ensure operation under cold weather
• Product specialty:
Apply for two layers 3.3 high borosilicon glass tube
â— The two layers glass tube, with same axis is vacuumized between
them, the vacuum degree can reach 5x***2Pa.
â— Coated with AL/N/AL selective absorbing coating material
â— High absorbing efficiency: the vacuum magnetic -control
sputtering selective absorptive coatings on the heat-collecting
plates has a high absorption coefficient of more than *3%, and the
emission coefficient around 6%.
â— Long life: the life span can reach *5 years
â— High practicability: able to endure impact of hail less than
*5mm in diameter with high heat efficiency throughout the year.
بلد: |
China |
نموذج رقم: |
MS-VT
|
سعر فوب: |
1.5 ~ 2.2 / Piece ( Negotiable ) (قابل للتفاوض)
أحصل على آخر سعر
|
الموقع: |
Jiaxing China |
سعر الحد الأدنى للطلب: |
1.5 per Piece |
الحد الأدني للطلب: |
10 Piece |
تفاصيل التغليف: |
export carton |
موعد التسليم: |
10-15 days |
القدرة على التوريد: |
30000 Piece per Month |
نوع الدفع: |
Western Union, L/C, T/T |
مجموعة المنتج : |
Solar Water Heater Vacuum Tubes
|