all-glass vacuum tube - 58*1800mm

all-glass vacuum tube, 1.excellent quality & cheap price, 2.higher absorbility & lower emission, 3.longer life-span, 4.CCC,CE,I - more info check here: http://www.sourcingappliances.com/all-glass-vacuum-tube-11099444/

Quick Brief

Type: Solar Water Heater Parts Place of Origin: Zhejiang China (Mainland) Brand Name: AJ Model Number: 58*1800mm all-glass vacuum tube: all-glass vacuum tube

Product Features:

all-glass vacuum tube

1.excellent quality & cheap price

2.higher absorbility & lower emission

3.longer life-span

4.CCC,CE,I

Business Terms:

Port: shanghai/ningbo

Minimum Order Quantity: 1000 Piece/Pieces

Supply Ability: 10000 Piece/Pieces per Day

Payment Terms: L/C,T/T

Contact Supplier

Specifications and Product Details:

all-glass vacuum tube

Structure		All glass double tube co-axial structure
Glass material		High borosilicate 3.3 glass
Outer tube diameter and thickness		Φ=47±0.7mm&=1.6mm Φ=58±0.7mm&=1.6mm Φ=70±0.7mm&=2.0mm
Inner tube diameter and thickness		Φ=37±0.7mm&=1.6mm Φ=47±0.7mm&=1.6mm Φ=58±0.7mm&=1.6mm
Tubes length		800mm 1200mm 1500mm 1600mm 1800mm 1900mm 2000mm 2100mm
Absorptive coating property	Material of coating	CU/SS-ALN(H)/SS-ALN(L)/ALN
	Sediment methods	3 target magnetron sputtering plating
	Absorptance	A_s=0.92~0.96(AM1.5)
	Emission ratio	∑_h=0.04~0.06(80°c±5°c)
Vacuum		P≤5.0*10^-3(Pa)
Idle sunning property parameters		Y=260~300m².C/KW
Solar irradiation for obtaining a preset water temperature		H≤4.7MJ/m²(Φ58)	H=3.7~4.2MJ/m²
		H≤3.7MJ/m²(Φ47)	H=2.9~3.2MJ/m²
Average heat loss coefficient		-U_(LT)=0.4~0.6W/(m².°c)