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Deno three-target solar vacuum tube with CE - 47*1800

solar vacuum tube, 1. CE ISO CCC certificate, 2. 15 years' gurantee, 3. OEM service offered - more info check here: http://www.sourcingappliances.com/Deno-three-target-solar-vacuum-tube-with-CE-10096226/

Quick Brief

Type: Solar Water Heater Parts Place of Origin: Zhejiang China (Mainland) Brand Name: DENO Model Number: 47*1800 Diameter of tube: 47mm Length of tube: 1800mm Coating: Copper

Product Features:

solar vacuum tube

1. CE ISO CCC certificate

2. 15 years' gurantee

3. OEM service offered

Business Terms:

Price Terms:FOB,CIF,EXW

Payment Terms: T/T,Western Union,MoneyGram,L/C

Minimum Order: Negotiatable

Delivery Port: Customized

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Deno three-target solar vacuum tube with CE
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Product Packagings & Delivery Terms:

Packaging Detail: 9/10/12pcs per export carton with foam brackets

Delivery Detail: 7-10 days after payment

Specifications and Product Details:

solar vacuum tube

1, Three-target Solar vacuum tube for solar water heater
2, ISO900:2000, CE certificate
3, 0.91 transmittance of the outer tube

Specifications:

1, Vacuum tube is consists of two layer of glass tubes
2, ISO900:2000, CE certificate;
3, 0.91 transmittance of outer tube

4, The outer tube is made of extremely strong transparent quartz sand which can resist impact from hail up to 25mm in diameter.

5, The inner tube is also made of quartz sand, but it is coated with a special selective coating with strong heat absorption and lowest heat loss.

6, The air is evacuated from the space between the two glass tubes to form a vacuum, so it eliminates heat loss.

7, This why the tubes are able to absorb the energy from infrared rays which can pass through clouds.

8, So it also can operate in low temperature and low sunlight medium.

MODEL

ITEMS

GB(single target)

Configuration

Double-layer concentric boronsillicate glass tubes

Glass thermal expansion coefficient3.3*10-6/3.3*10-6/
Diameter of outer tubeφ47±1mmφ58±1mm
Diameter of absorber tubeφ37±1mmφ47±1mm
Thickness1.5mm(±0.1mm)1.6mm(±0.1mm)
Transmittance of outer tube0.910.91
Length1500±5mm1800±5mm
Solar selective absorbing coatingAl-N/AlAl-N/Al
Absorptance(AM1.5)≥0.89≥0.89
Emittance≤0.0880≤0.0880
VacuumP≤5*10-3PaP≤5*10-3Pa
Stagnation parameter≥230/KW≥230/KW
Average Heat loss coefficient≤0.85W/(*)≤0.85W/(*)
Solar irradiation under stagnation≤3.5MJ/≤3.5MJ/
Hailstone resistancehailstone diameter25mmhailstone diameter25mm
Pressure-endure ability0.6mPa0.6mPa

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