Solar Energy Collector Vacuum Tube Three-Target 47*1500mm

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L/C,T/T,D/P

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FOB,CFR,CIF

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Product Description

Product Attributes
Supply Ability & Additional Information

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Overview

Product Attributes

Model No.: 47*1500mm

Application: Air Conditioning System

Pipe Material: Glass

Pressurized: Non-Pressure

Supply Ability & Additional Information

Payment Type: L/C,T/T,D/P

Incoterm: FOB,CFR,CIF

Just like an automobile engine, the computer CPU, evacuated tube is core of the Solar Water Heater.

It`s similar to a conventional Dewar flask and consists of two borosilicate glass tubes, resisting 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 conversion.

The key element determine that the performance of tube is the technology of the film coating, and it is the best efficient tube you can find in China, with the highest absorption rate of near 93% comparing with common rate of 90% and lowest emission rate about 6% comparing with common rate of 7%.

Three-target Solar Vacuum Tube
- Key component of Solar Collector and solar water heater
- Coating material: Al-N/Al or SS-Al/N/Cu.

Specification

Absorbance rate after coating (AM1.5)	α%	≥94.5
Absorbance rate after evacuating (AM1.5)	α%	≥ 93.5
Emission rate after coating (80±5 °C)	α%	≤ 6
Emission rate after evacuating (80±5 °C)	α%	≤ 6.5
Stagnation parameter	m² °C/kW	≥ 240
Solar radiance exposure	MJ/m²	≤ 3.0
Average heat loss coefficient	W/(m²°C)	≤ 0.70
Selective coating material	AL-N/AL, SS-AL-N/Cu
Impact resistance	Steel Ball Test: Steel ball with diameter of 30 mm fall on the evacuatedtube vertically from 450 mm height.
Vacuum degree	Pa	≤ 3X10-3
Pressure	Mpa	0.6
Transparent (AM1.5)	≥ 0.89 (ISO9806-1: 1994)