good quality and economical copper still for solar water heater

1.15 years warranty time. 2.CE,CCC,ROHS ,SK,certificates. 3.more powerful and durable 4.high efficienct 5.best service

The best heat pipe technical data:

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
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		1500mm  1800mm
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		5.0×103 Pa
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/(.)
Thermal conductivity of HEAT PIPT		2X10+4~1.6X10+6  W/(m.)
The material of HEAT PIPE		Copper and phase change
Resistant Hail		25mm
Life aged		15 years

Feature:

A perfect combination of the vacuum tube and the heat pipe.

1). Higher heat efficiency: advanced heat transferring style of the heat pipe, excellent selective absorb coating and perfect combination with high vacuum heat preservation.

2). Wide applicable range: as the heat pipe has less heat capacity, it can be started quickly even under cloudy fine day and collect heat effectively. It can work normally even-30 below degree. As no water in the vacuum tube, it can effectively prevent lowing of heat efficiency due to frost cracking or scaling.

3). Each individual tube can work independently, and the whole machine can still work if individual tube is damaged. The service life of the heat pipe can be longer than 15years.

4). The unique connection between the heat pipe and the vacuum tube can ensure both sealing and replace of damaged glass vacuum tube.

good quality and economical copper still for solar water heater