glass material: high borosilicate 3.3 high quality for 15 years warranty dia. 58/47mm unique super copper surface allowing l
Our solar collector tubes can start up fast and collects solar energy fully, high level vacuum ensure operation under cold weather, and the unique super copper surface allowing lower reflection and minimal heat loss, the current products mainly include: diameter: 47/58mm, and the length is 1800mm, but we can also provide products as your request. Long time warranty for 15 years.
Difference between three high efficiency solar vacuum tube (effective tubes, high cold tube, high
temperature special efficiency tube)and ordinary tube:
Absorption of heat membrane layer is difference between these two kind of tubes.
(Absorption of heat membrane layer is the key part of vacuum tubes.)
Absorption of heat membrane layer of three high efficiency solar vacuum tube is interference
membrane, common tube is gradient membrane. The difference is mainly for interference
membrane and the gradient membrane distinction.
1. Fundamental distinction: membrane layer structure is different, the principle of the
absorption of sun's rays result in differently. gradient membrane, for multilayer, its absorbing
layer is generally 9 layers. It to the sun's rays are layered absorption, and its absorb the light
performance gradually become tall. Because the gradient structure, launch with increasing
temperature rise than work, that temperature in 300 to 500 ºC than when launch greatly
increased. The aluminum ions and absorbing layer in high temperature condition, lively nature
greatly enhance the, and develop a drift. This happened in the internal structure of membrane
layer caused confusion, coating began to aging. In the long run, the high temperature condition,
membrane layer can fall off, thereby affecting the vacuum tube heat efficiency and life integrating.
Interference membrane, its absorbing layer altogether 2 layer, among two layer membranes,
because the metal content between the different and interfere ratio effect, make absorption
ratio increase, launch ratio decrease. Plus effect of reduce emission from minus reverse layer,
thus achieve more higher absorptance and reducing the role of launch ,greatly improved
collection thermal efficiency.
2.Features: Absorptance of three high efficiency solar vacuum tube increased by 12%, and
launch reduced by 30 to 40 percent, the super absorbing, heat loss less, warming faster.
Efficient tube, the super absorbing, thermal efficiency is high, warming faster, in the same
light conditions, can create more and higher temperature water than common tubes ;
high cold tube, copper ions for the launch of aluminum ion mantua, so low 0.2 thermal loss
rarely, in high cold environment can still work normally. hot water turn out as usual under- 30 ºC. high temperature special efficiency tube, because the membrane layer stainless
steel ion high temperature resistant, fight air drying. Membrane layer under the condition of
the 400 ºC, not attenuation, not aging, discoloration.
In the same light conditions, ordinary tube heat absorption is lower than three high efficiency
solar vacuum tube, can't even meet requirements that wash bath; In lower temperature,
heat loss is bigger, collection hot effect is reduced, affect the normal use; Especially in the
empty sun over 270 ºC, membrane layer began to aging, fall off, absorption rate drastically
reduce, life shortens greatly.
3.Technology: high temperature special effects tube, high cold tube, efficient tube used
respectively to three target, double target, single target magnetron sputtering craft; Ordinary
tube typically use the single target magnetron sputtering technology.
4, appearance: A, Mouth of tube, here membrane layer above 800 ºC high temperature
condition sealing off part is inevitable.
As high temperature special effects tube has high temperature resistant, only 1 cm long
without membrane layer in mouth of tube, while others without membrane layer for without
high temperature resistant, tube membrane layer falls off the length is about 2.5cm.
B, Inner tube color: with macroscopic observation, high-temperature tubes and high cold tube for internal color is kermesinus (for membrane layers
bottom is copper); the bottom And efficient tube and ordinary tube are white (for membrane
layer bottom is aluminum).
Solar evacuated collector tubes technical data:
Dimension | Φ47 | Φ58 |
Material of tubes | 3.3 high borosilicate | 3.3 high borosilicate |
Glass expansion ratio | 3.3±0.1X10-6 k-1 | 3.3±0.1X10-6 k-1 |
Outer diameter of tubes | Φ47±0.7 | Φ58±0.7 |
Inner diameter of tubes | Φ37±0.7 | Φ47±0.7 |
Thickness of glass | 1.6±0.15 | 1.6±0.15 |
Transmittance | ≥0.89 | ≥0.89 |
Selective coating | SS-CU-AL-N/AL | SS-CU-AL-N/AL |
Adsorptivity | ≥0.86(AM1.5) | ≥0.86(AM1.5) |
Emissivity | ≤0.080(80±5) | ≤0.080(80±5) |
Vacuum degree | ≤5.0 X 10-3Pa | ≤5.0 X 10-3Pa |
Collecting performance under sunshine | ≥190m2/kw | ≥190m2/kw |
Hailstone resistance | 25mm | 25mm |
Start up fast and collect solar energy fully
Unique super pure copper surface,allowing low reflection and minimal heat loss.
High level vacuum ensure operation under cold weather.
Long time warranty to 15 years
Absorptance of three high efficiency
Vacuum tube of solar collector 58/47 or 47/37 type
