Solar Energy Collector Vacuum Tube Three-Target 58X1800

Payment Type:

L/C,T/T,D/P

Incoterm:

FOB,CFR,CIF

Min. Order:

100 Bag/Bags

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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

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)