Hot Selling Large Diamter Solar Vacuum Tube Prices of Cooker

Product Description

Hot Selling Large Diamter Solar Vacuum Tube Prices of Cooker Solar vacuum tube cooker description The evacuated tube is the key component to all the thermal heaters and systems. It's similar to a
conventional Dewar flask and consists of two borosilicate glass tubes, resistant to high chemical and
thermal shock. The outer side of the inner tube is coated with a sputtered solar selective surface. This
coated inner tube is closed at one end and sealed at the other end to the outer tube. The annular space between the outer tube and inner tube is evacuated to avoid heat loss in conduction and convection.
The key element determines function of tube is the technology of the film coating, with the highest absorptance rate of near 97% with common rate of 94% and lowest
emission rate near 3% with common rate of 5%. At this efficiency, it has been very hard to improve the function any more, even very little part.
Solar vacuum tube cooker specification

Model			125mm*1800mm				125mm*2100mm
Structure				All-glass concentric tube geometry
Glass Material			Borosilicate glass
Length			1800mm				2100mm
Outer Tube Diameter			125mm
Inner Tube Diameter			110mm
Wall Thickness			3.0mm
Transmittance of Outer Tube			0.93
	Construction		ALN/ALN-SS/Cu/ Glass
Absorptive	Method of Deposition		DC reactive sputtering
Coating	Absorptance		94%
Properties
	Variation along Tube Length		3%
	Emittance		< 6% (100°ƒ[1](C)
	Vacuum Gas Pressure		£ 5 x 10-3 Pa
Stagnation Temperature (typical)			³ 270 °ƒ[1](C
Recommended Working Temperature			£ƒ 150 °ƒ[1](C
Heat Loss Coefficient of Collector Tube			£ 0.85W / (M2·ƒ[1]°ƒ[1](C)
Impact Resistance			Withstand 1 inch diameter hailstone without breaking
Strength (pressure tested)			1 MPa
Lifetime			15 years

Solar vacuum tube cooker advantage 1. Higher efficiency collector, much lower heat loss with vacuum insulation;
2. High pressure and super anti-freezing performance in cold weather condition;
3. Less heat loss for closed loop circulation;
4. No system drainage even though one or several tubes are broken;
5. No risk of tube breaking from thermal shock;
6. More convenient in system parts carring and installation.
Solar vacuum tube cooker production photos
Contact us

Dezhou Gaia Solar Energy Co.,Ltd
Room 712, Baitiane Plaza, No.7 of HuBinnan Road, Dezhou City, Shandong Province

Website: gaiasolar.en.made-in-China.com
Mobile and Chat: 0086-13953485199