Heat Pipe Vacuum Tube (ILHV Series)

Product Description

Three target all-glass vacuum tube, more efficient and good performance, especially for solar energy collecting to heat water


Technical Parameters
Working Principle:

Tri-target solar vacuum tube, connecting with water tank or manifold, when it works, cold water flows down into the vacuum tube, and there it is heated with solar energy absorbed by the coating outside of inner vacuum tube, the solar will be absorbed efficiently by the coating with little loss of heat because of the vacuum between the inner and outer glass tubes, and when cold water becomes hot, hot water will rise up to water tank or manifold because of the larger proportion to cold water, cold water again flows into solar vacuum tube for another heating process.

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		800mm,         1200mm,     1500mm,     1600mm,     1800mm,     1900mm,     2000mm,     2100mm
Absorbing  coating property	Structure	Cu/SS-ALN(H)/SS-ALN(L)/ALN
	Sediment    method	3 target magnetron sputtering plating
	Specific    absorption	as=0.93~0.96(AM1.5)
	Emission ratio	ε h=0.04~0.06(80± 5)
Vacuum tightness		P≤ 5.0X10 -3 Pa
Idle sunning property parameters		Y=260~300m2. /KW
Solar irradiation     for obtaining a     preset water     temperature	H≤ 3.7MJ/m2(Φ 47)	H=3.74~4.2MJ/m2
	H≤ 4.7MJ/m2(Φ 58)	H=2.9~3.2MJ/m2
Average heat loss coefficient		ULT=0.4~0.6W/(m2. )