1 Warm up quickly 2 Highly effective absorption 3 Heat preservation effect is remarkable 4 Life: over 10 years WORKING   PRINCIPLE:1  The  vacuum  tube  is  composed  of  inner  and  outer  glass  pipe,selective absorption layer  and  vacuum  space. 2  The  vacuum  absorbs  the  solar  energy by  absorption  layer  and  turns  it  into  heat  energy.

SPECIFICATION:

1 Solar water heater vacuum tube is the core component , the cover glass and the composition of glass .

2  Glass tube coated on the inner solar selective absorbing film , one end of a spring inside of the card in the cover glass , the other end and the cover glass sealing .

3  The cover glass and laminated within the glass tube under vacuum at high temperature state , the vacuum insulation laminated play a role .

4  Unique stainless steel heat absorbing layer of aluminum nitride , high temperature up to 500 °C.

PARAMETER:

Name	47×1500mm	58×1800mm		70×2100mm
Air drying	≥175 m²*°C/kW	≥175 m²*°C/kW		≥175 m²*°C/kW
Nausea drying	≤3.8MJ/m²	≤4.7MJ/m²		————————-
Average  heat  loss	≤0.90w/ (m²*°C)	≤0.90w/ (m²*°C)		≤0.90w/ (m²*°C)
Vacuum	≤5×10-2pa	≤5×10-2pa		≤5×10-2pa
pressure resistance	0.6MPa	0.6MPa		0.6MPa
Air drying temperature	>250°C		>250°C	>250°C
Absorption  rate	>92%		>92%	>92%
Emission  rate	≤8%		≤8%	≤8%
Freeze-proofing	>-40°C		>-40°C	>-40°C
Weight(kg)	≥1.3		≥2.0	≥3.1
Capacity(L)	1.3		2.7	4.6
Length allowance(mm)	±7.5		±9	±10
Outer tube diameter(mm)	47±0.7		58±0.7	70±0.7
Outer tube diameter(mm)	1.6±0.15		1.6±0.15	2.0±0.15
Inner tube diameter(mm)	37±0.7		47±0.7	58±0.7
Inner tube thickness(mm)	1.6±0.15		1.6±0.15	1.6±0.15

  

Borosilicate glass Solar Collector Tube