All-Glass Evacuated Solar Collect Tube

Product Description

1. Ordinary Evacuated-tube
Specification:
Structure:All-glass coaxial dual tube
Glass material:High borosilicate glass 3.3
Diameter and length of tube(mm):
Φ47*1200,    Φ47*1500,     Φ47*1600,    Φ47*1800
Φ58*1500,    Φ58*1600,     Φ58*1600,    Φ58*1600
Φ58*1600,    Φ58*2000,     Φ58*2100
Φ70*1800,    Φ70*2000,     Φ70*2100
Solar selective absorbing coating:Al-N/Al solar selective absorbing coating
Absorbance:>91%
Emittance:<8%
Vacuum degree:<0.002Pa
Stagnation parameter:>250m2'Ckw
Solar irradiation under stagnation:<2.8MJ/m2
Average heat loss coefficient:<0.8W/m2 degree centigrade
Lifetime:15years

2. Three High Evacuated-tube
Advantages:
High temperature: by special stainless steel aluminum nitride layer,
it could bear the high temperature of 500'C,and the film is not falling, not aging.
Anti-cold: Super-copper launches mirror, Low reflectance, Small heat loss, good collector results in cold environment, and has hot water.
Efficient absorption: high absorption is 92%, reflection reduces 65%, heat increases 12%. higher temperature, more hot water.
Specification:
Structure  All-glass coaxial dual tube
Glass material  High borosilicate glass 3.3
Diameter and length of tube
Φ47*1200, Φ47*1500, Φ47*1600, Φ47*1800
Φ58*1500, Φ58*1600, Φ58*1700, Φ58*1800
Φ58*1900, Φ58*2000, Φ58*2100
Φ70*1800, Φ70*2000, Φ70*2100
Solar selective absorbing coating: SS-C/CU solar selective absorbing coating
Absorbance: >92%
Emittance: <5%
Vacuum degree: <0.002Pa
Stagnation parameter: >250m2'C/kw
Solar irradiation under stagnation: <2.8MJ/m2
Average heat loss coefficient: <0.8W/m2'C
Lifetime: 15years

3. Three Cavity Evacuated-tubes
Advantages:
It inner vacuum tube can reduce the water that exchanged, and the water temperature will increase quickly and cycle rapidly.
The diameter of φ58 three-cavity tubes adopt φ20 inner tubes, the diameter of φ70 three-cavity tubes adopt φ37 inner tube. It can reach fast, and high thermal efficiency, avoid furring condensed into plug
Specification:
Structure:All-glass coaxial dual tube(mm):
Glass material: High borosilicate glass 3.3
Diameter and length of tube
Φ58*1500, Φ58*1600, Φ58*1700, Φ58*1800
Φ58*1900, Φ58*2000, Φ58*2100
Φ70*1800, Φ70*2000, Φ70*2100
Solar selective absorbing coating:Al-N/Al solar selective absorbing coating
Absorbance: >92%
Emittance: <8%
Vacuum degree: <0.002Pa
Stagnation parameter: >230m2 c/kw
Solar irradiation under stagnation: <2.8MJ/m2
Average heat loss coefficient: <0.8W/m2 degree centigrade
Lifetime: 15years

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