Product Details

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

1.Standard 3.3 high borosilicate glass tube
2.Low coefficient of heat loss
3.Good performance & price
4.15years warranty

Structure		All-glass double-tube co-axial structure
Glass material		High borosilicate 3.3 glass
External tube diameter / thickness		Φ=47±1.0mm§=1.6mm±0.2mm Φ=58±1.0mm§=1.8mm±0.2mm Φ=70±1.5mm§=2.2mm±0.3mm
Internal pipe diameter / thickness		Φ=37±0.8mm§=1.4mm±0.2mm Φ=47±1.0mm§=1.6mm±0.2mm Φ=58±1.0mm§=1.8mm±0.2mm
Tube length		950mm 1500mm 1600mm 1700mm 1800mm 1900mm 2000mm 2100mm
Absorptive coating property	Structure		Cu/SS-ALN(H)/SS-ALN(L)/ALN
	Sediment method		3 target magnetron sputtering plating
	Specific absorption		As=0.93~0.96 (AM1.5)
	Emission ratio		εh =0.04~0.06 (80±5)
Vacuum tightness			P≤5.0×10-3Pa
Idle sunning property parameters			Y=260~300 m2.C/KW
Solar irradiation for obtaining a preset water temperature	H≤4.7MJ/m2(Φ58)		H=3.7~4.2 MJ/m2
	H≤3.7MJ/m2(Φ47)		H=2.9~3.2 MJ/m2
Average heat loss coefficient			ULT=0.4~0.6W/(m2.)

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 lower reflection and minimal heat loss.

High level vacuum ensure operation under cold weather.

Long time warranty to 15 years

Absorptance of three high efficiency