Solar Energy Collector Vacuum Tube Three-Target 58*400mm

Payment Type: L/C,T/T,D/P
Incoterm: FOB,CFR,CIF
Min. Order: 100 Bag/Bags
Delivery Time: 15 Days

Basic Info

Model No.: 58*400mm

Application: Water Heater, Solar Thermal, Air Conditioning System

Pipe Material: Glass

Pressurized: Non-Pressure

Product Description

Evacuated tubes are aligned in parallel; the angle of mounting depends upon the latitude of your location. In a North South orientation the tubes can passively track heat from the sun all day. In an East West orientation they can track the sun all year round.

The efficiency of a evacuated water heater is dependent upon a number of factors, one important one being the level of evacuated radiation in your region.

Three-target solar vacuum tube
- Key component of solar collector and solar water heater
- Coating material: Al-N/Al or SS-Al/N/Cu.


Absorbance rate after coating (AM1.5)



Absorbance rate after evacuating (AM1.5)


≥ 93.5

Emission rate after coating (80±5 °C)


≤ 6

Emission rate after evacuating (80±5 °C) 


≤ 6.5

Stagnation parameter

m² °C/kW

≥ 240

Solar radiance exposure


≤ 3.0

Average heat loss coefficient


≤ 0.70

Selective coating material


Impact resistance

Steel Ball Test: Steel ball with diameter of 30 mm fall on the evacuatedtube vertically from 450 mm height.

Vacuum degree


≤ 3X10-3




Transparent (AM1.5)

≥ 0.89 (ISO9806-1: 1994)

 Vacuum Tube All Glass Evacuated 400mm

Contact Person: Guo



Address: No. 30766 East Jingshi Road,Jinan,Shandong

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