Product Details

Specifications

heat pipe glass vacuum 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

Guangpu ,established in 1995,is a leading professional manufacturer of solar thermal products ,especially in sollar vacuum tube. We are one of the drafters of the national standard of “All-glass heat pipe- evacuated solar collector tubes" for the National Standardization Committee. In 18-year development,we have possessed advanced technology and superior equipments for quality, schedule and cost control. We have annual production capacity over 10 million of various high-quality all-glass evacuated solar collector tubes.We have been continuously supplying solar products with best quality to well-known solar thermal companies both in China and other counties across the world. With 18 years experience and professional knowledge ,we are glad to help your team succeed through our cooperation.

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
Outer tube diameter	Φ58±0.7mm &=1.6mm
Inner tube diameter	Φ37±0.7mm &=1.6mm
Inner tube diameter	Φ47±0.7mm &=1.6mm
Length	47mm-1500mm
Length	58mm-1800mm
Coating	SS-ALN_x/Cu
Solar absorption efficiency	0.90~0.95AM1.5
Launch ratio	0.04~0.06(80^oC±5^oC)
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	U_LT= 0.4~0.6w/(m².^oC)
Length of Condenser	&=125mm±5mm(Φ47-1500mm )
Length of Condenser	&=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.

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