HOT 2013 new best seller all-glass heat pipes solar collectors

Specifications

solar vacuum solar tube with high efficiency and low heat loss coefficient

Why choose us:

          A:  18 years experience in solar vacuum tube

                B:  First quality, Promptly delivery, Customer first

                C:  Competitive price &  Free sample for test 

All glass heat pipe solar vacuum tube

 

Specification
Structure	Two concentric borosilicate glass tubes
Material	Borosilicate glass 3.3
Outer tube diameter	Φ47±0.7mm  &=1.6mm
	Φ58±0.7mm  &=1.6mm
Inner tube diameter	Φ37±0.7mm  &=1.6mm
	Φ47±0.7mm  &=1.6mm
Length	47mm-1500mm
	58mm-1800mm
Coating	SS-ALNx/Cu
Solar absorption efficiency	0.90~0.95AM1.5
Launch ratio	0.04~0.06(80oC±5oC)
Vacuum degree	P≤5.0×10-3 (Pa)
Max stagnation temperature	260~300
Vacuum degree of inner tube	P≤1.0×10¯³ (Pa)
Average heat loss coefficient	ULT= 0.4~0.6w/(m2.oC)
Length of Condenser	&=125mm±5mm(Φ47-1500mm )
	&=145mm±5mm(Φ58-1800mm)
Resistance performance	Hail diameter≤ 25mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Advantages

 

 

(1).Superior thermal conductivityIt can transfer much more heat energy even than silver, copper or aluminum which has very high heat conductivity.

 

(2).Superior isothermal stability: There is little pressure drop as well as temperature drop in the inner tube.

 

(3).The density of heat flow in the inner tube can be changed by modifying the heating surface of the condenser or the evaporation part.

 

(4). It can be used in both pressurized and unpressurized systems.

 

(5). Heat energy of the hot water in the tank will not lose through the condenser when the tube stops absorbing solar energy as there is a vacuum in the inner tube.

 

(6). The tube is anti-freezing for there is no water in the tube.