Sku:#LQ-VT-03

Heat Pipe Vacuum Tube

Description:

Evacuated tube are the absorber of the solar water heater ,This type of tube is chosen for it’s reliability , performance and low manufacturing cost.

  • Addition Description

Introduction:

Evacuated tube are the absorber of  the solar water heater ,This type of tube is chosen for it’s reliability , performance and low manufacturing cost.

Each evacuated tube consists of two glass tubes made from extremely strong borosilicate glass,The outer tube is transparent allowing light rays to pass through with minimal reflection,The inner tube is coated with a special selective coating (AL-N/AL)which features excellent solar radiation absorption and minimal reflection properties The top of the two tubes are fused together and the air contained in the space between the two layers of glass is pumped out while exposig the tube to high temperature ,This “evacuation” of the gasses forms a vacuum which is an important factor in the performance of the evacuated tubes.

ⅠHigh heat-collecting effciency: The vacuum magnetic-controlled sputtered aluminum-nitrogen-aluminum selective absorption coating has a solar absorptance≥0.93, a heat emittance≤6%,a low heat loss ,and a good thermal-retention effect

Ⅱ Good weather-resistanc:It has a good all-year thermal efficiency and is able to withstand the front impact by the hail of a dianmeter below 25mm and pressure 0.6Mpa

Ⅲ Long service life:ensures a service life of 15 years for the evacuated tube.


Item

Measured Value

Specification in Chinese

state standard

Ptance of the solar selective absorbing coatings

α≥0.931

α≥0.86(AM1.5)

Hemisphere emittance

ε≤0.06

ε≤0.09(80±5)

Solar radiance exposure using sun as medium

H≤2.639MJ/m²

H≤3.8MJ/m²

Ation parameter using air as medium

Y≥240 m²/Kw

Y≥175 m²/Kw

Average heat loss coefficient

ULT≤0.78W/m2

ULT≤0.9W/m2

 

Model

Outer diameter/inner

Diameter(mm)

Length(mm)

Package

1

58/47

1800/1500/1200

Carton

2

47/37

1800/1500/1200

Carton

  • Brand:
    Longquan Solar & OEM
  • Color:
    Produced according to customer requirements
  • Place of Origin:
    China
  • Price Terms:
    FOB, CIF
  • Payment Terms:
    T/T, L/C
  • Supply Ability:
    18,000 pcs/day
  • Delivery Time:
    7 days/according to the order
  • Minimum Order:
    100 pcs
  • Send Inquiry

Evacuated tube are the absorber of the solar water heater ,This type of tube is chosen for it’s reliability , performance and low manufacturing cost.

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