longest life solar evacuated tube 47mm1800mm - CD-

longest life solar evacuated tube 47mm1800mm, The simplest design and most inexpensive solar vacuum tube in the world - more info check here: http://www.sourcingappliances.com/longest-life-solar-evacuated-tube-47mm1800mm-30164581/

Quick Brief

Type: Solar Water Heater Parts Place of Origin: China (Mainland) Brand Name: chaoda Model Number: CD- color: dark blue /as customer's requirement coating: single target thickness: 1.6mm/2.0mm

Product Features:

longest life solar evacuated tube 47mm1800mm

The simplest design and most inexpensive solar vacuum tube in the world

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:

longest life solar evacuated tube 47mm1800mm

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		500mm 850mm 1200mm 1500mm 1600mm 1700mm 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(AM1.5)
	Emission ratio	0.05~0.075(80°C±5°C)
Vacuum tightness		5.0×10^-3Pa
Idle sunning property parameters		220~260 m².°C /KW
Solar irradiation for obtaining a preset water temperature	H≤4.7MJ m²(Φ58)	H=4.1~4.4 MJ/ m²
	H≤3.7MJ/ m²(Φ47)	H=3.1~3.4 MJ/ m²
Average heat loss coefficient		0.6~0.7W/(m².°C)
Resist Hailstone		Φ25mm
Resist cold		-30°C
Resist wind		30 m/s
Life aged		15 years