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2020 hot sales Longpu 137mm*600mm big diameter three target solar vacuum tube for solar cooker

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6-9 Pieces
10-99 Pieces
>=100 Pieces
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2 Pieces
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Company Information

Shandong Longpu Solar Energy Co., Ltd.

CN Manufacturer, Trading Company
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Quick Details

Brand Name: Longpu
Place of Origin: Shandong China
Length: 600mm
Product name: solar vacuum tube
Material: Borosilicate Glass3.3
Pipe Material: Glass
Model Number: 137mm
Application: solar cooker stove
Diameter: 137mm
Packaging Detail: Standard export package suitable for shipment by sea or air
Selling Units: Single item
Single package size: 64X17X23 cm
Single gross weight: 5.1 KG
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Product description


  Solar vacuum tubes are heart of the Longpu Solar Collector ,responsible for absorbing sunlight and converting it into usable heat. We specialize in producing 125mm and 137mm big diameter solar vacuum tube,which can be used for solar cooker,solar barbecue oven,solar heating ,solar refrigeration,solar energy without tank and solar collector.





 The solar vacuum tube design used by Longpu has proven to be extremely robust.The tube is essentially two glass tubes that are fused at the top and bottom.The inner tube has a solar absorbing coating,and the space between the two tubes is evacuated to form a vacuum.750 structure 1.jpg

Technical parameter


Product name Three Target Solar Vacuum Tube
Diamter of outer tube (mm) 125 125 137 137
Diameter of inner tube (mm) 111 111 121 121
Tube thickness (mm) 3.0 3.0 3.0 3.0
Tube Length (mm)  566/600/700/850mm 850/1860/2160mm
Application Solar cooker Solar collector Solar cooker Solar collector
Structure Three target
Material Borosilicate Glass 3.3
Material of coating Copper, Aluminum, Stainless Steel
Absorptance ≥0.92
Emittance ≤0.06
vacuum < 3×10-3 Pa
Transmittance of Outer Tube 0.92
Solar radiance exposure(MJ/m2) ≤3.6
Heat-loss coefficient
(w/ (m2*℃)
< 0.5 
Product display


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About us

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