High efficiency vacuum solar collector tubes
outer tube diameter: 58/47mm
inner tube diameter: 47/37mm
for 15 years warranty
OEM is welcomed
glass material:borosilicate
Our solar collector tubes can start up fast and collects solar energy fully, Long time warranty for 15 years.
We may supply three high efficiency and ordinary tube for your choice:
Difference between three high efficiency tube and ordinary tube
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 below zere. 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).