Solar evacuated tube EN-T03

详情

Solar evacuated tube EN-T*3 ALL-GLASS EVACUATED VACUUM TUBE MODEL size QTY Diameter Length Thickness Quantity (tubes) ESA****0 Φ*7 X ***0 *0 �*7mm ***5mm 1.5mm(±0.1mm) ***7TUE ****0HQ ESA****0 Φ*8 X ***0 *5 �*7mm ***5mm 1.7mm(±0.1mm) ***0TEU ***0HQ EST****0 Φ*8 X ***0 *5 �*7mm ***5mm 1.7mm(±0.1mm) ***0TEU ***0HQ ESH****0 Φ*7 X ***0 *0 �*7mm ***5mm 1.5mm(±0.1mm) ***7TEU ****0HQ ESH****0 Φ*8 X ***0 *5 �*7mm ***5mm 1.7mm(±0.1mm) ***0TEU ***0HQ Detailed Product Description 1.All glass evacuated Vacuum tube made of high borosilicate glass, use the Graded AI-N/AI selective surface sputtering�solar selective absorbing coating technology. ***** material : aluminium �nitrogen-aluminium. ***** make vacuum tubes have high performance of absorption and low reflection ratio. ***** the interlayer, vacuum has a unique effect of thermo, with its temperature up to **0 degrees of idle sunning, performing a strong heating ability. TECHNICAL SPECIFICATIONS Types All-glass evacuated vacuum tube Configuration Two-concentric borosilicate glass tubes Glass-thermal expansion coefficient 3.3�***6/� Solar-selective-absorbing-coating-Technology Graded Al-N/Al selective surface, sputtering Absorbance Rate after coating(AM1.5) �*4.5% Absorbance Rate after Evacuating(AM1.5) �*2.5% Emission Rate after coating(*0±5�) ��6.5% Emission Rate after Evacuating(*0±5�) ��7.5% Average Heat Loss Coefficient �0.*5W/(��) Selective Coating Material Aluminium nitrogen-aluminium Impact Resistance Steel Ball Test: Steel ball with diameter of *0mm fall on the evacuated tube vertically from **0mm height, the evacuated tube is not damaged. Vacuum Degree �3�***3Pa Pressure 0.6mPa Transparent �0.*9(AM1.5/SO*****1:***4)