evacuated tube solar - 47,58

all glass vacuum tube - more info check here: http://www.sourcingappliances.com/evacuated-tube-solar-30169713/

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Type: Solar Water Heater Parts Place of Origin: Zhejiang China (Mainland) Brand Name: oem Model Number: 47,58 three target red coating inside: red coating in...

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all glass vacuum tube

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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:

Structure	All-glass couble-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	800mm 1200mm 1500mm 1600mm 1800mm 1900mm 2000mm 2100mm
Absorptive coating property	Structure Cu/SS-ALN(H)/SS-ALN(L)/ALN
	Sediment method three targets magnetron sputtering plating
	Specific absorption 0.92-0.96
	Emission ratio 0.04-0.06
Vacuum tightness	5.0×10¯³ Pa
Idle sunning property parameters	260-300 m².C/KW
Solar irradiation for obtaining a preset water temperature	Φ=58 H≤4.7MJ/m² H=3.7-4.2MJ/m²
	Φ=47 H≤3.7MJ/m² H=2.9-3.2MJ/m²


Resistant Hail	≤25mm
Useful life	15 years

evacuated tube solar - 47,58

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