Specifications

Solar products Vacuum solar tube 58/1800mm
1.High Absorption
2.Low Emittance
3.High Thermal Eff
4.OEM is welcome

3-target Solar vacuum tube

Features of our triple target coating tube with heat pipe:
1) High heat effectiveness: higher than all glass evacuated solar collector tube
by 15%
2) heat pipes    conduction: successfully prevents the defects of tube breakage and low power output caused by water fouling and deposits or dust and sand
3) Prevents the tube from being easily broken caused by volume expansion when
water freezes in the frigid season
4) Low thermal capacity :makes the tube start up quickly
5) Energy output within only 2 minutes of sunshine
6) Insulation temperature can reach 250°C, average heat efficiency can still be
more than 50%; even under -50°C
7) High efficient: selective absorptive coatings and vacuum heat insulation technology
ensure the tube has higher heat output in cloudy weather and in most areas,
especially in winter
8) Solar collecting plate is sealed inside a high quality borosilicate glass tube
with 5 x 10 - 3Pa of vacuum, to stop corrosion; even in moist conditions
Metal-glass evacuated solar collector tube consists of a triple target coating tube and a
flat or curved aluminum plate inside attached to a copper heat pipe.

 

Structure		All-glass double-tube co-axial structure
Glass material		High borosilicate 3.3 glass
External pipe diameter and thickness		Φ=47±0.7mm=1.6mm Φ=58±0.7mm=1.6mm Φ=70±0.7mm=2.0mm
Internal pipe diameter and thickness		Φ=37±0.7mm=1.6mm Φ=47±0.7mm=1.6mm Φ=58±0.7mm=1.6mm
Pipe length		1200mm 1500mm 1600mm 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	0.93~0.96
	Emission ratio	0.04~0.06
Vacuum tightness		5.0×10-3Pa
Idle sunning property parameters		260~300./KW
Solar irradiation for obtaining a preset water temperature	H≤4.7MJ/(Φ58)	H=3.7~4.2MJ/
	H≤3.7MJ/(Φ47)	H=2.9~3.2MJ/
Average heat loss coefficient		0.4~0.7W/(.)
Resistant Hail		25mm
Life aged		15 years