Product Features:

CE,CCC,ISO9001,ISO14001 approved

Prompt Delivery

OEM service

Business Terms:

Price Terms:FOB,CIF,EXW

Payment Terms: T/T,Western Union,MoneyGram,L/C

Minimum Order: Negotiatable

Delivery Port: Customized

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Specifications and Product Details:

Solar Vacuum Tubes

1. Structure: All-glass double-tube co-axail structure
2. High borosillicate 3.3 glass
3. Absorptive coating property:
A. Structure AL/AL-ALN(H)/AL-ALN(L)/ALN
B. Sediment method: Single target magnertron sputtering plating
C. Specific absorption: 0.90~0.93(AM1.5)
D. Emission ratio: 0.05~0.075(80º C± 5º C )
4. Idle sunning property parameters: Y=220~260m2. º C/KW
5. Solar irradiation for obtaining a preset water temperature
H=4.14.4MJ/m2(Φ 58) H=3.13.4MJ/m2( Φ 47 )
6. Average heat loss coefficient: 0.6~0.7/(m2. º C)
7. Usage life: 15 years

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	AL/AL-ALN(H)/AL-ALN(L)/ALN
	Sediment method	Single target magnetron sputtering plating
	Specific absorption	0.90~0.93
	Emission ratio	0.05~0.075
Vacuum tightness		5.0×103 Pa
Idle sunning property parameters		220~260./KW
Solar irradiation for obtaining a preset water temperature	H≤4.7MJ/(Φ58)	H=4.1~4.4MJ/
	H≤3.7MJ/(Φ47)	H=3.1~3.4MJ/
Average heat loss coefficient		0.6~0.7W/(.)
Resistant Hail		25mm
Life aged		15 years