Vacuum Tube for Solar Water Heater - SJL-SP

Solar single target coating tube, Dia.:47/37mm, 57/47mm, Length: 1500mm/2100mm,, Borosilicate Glass 3.3 - more info check here: http://www.sourcingappliances.com/Vacuum-Tube-for-Solar-Water-Heater-11274934/

Quick Brief

Type: Solar Water Heater Parts Place of Origin: Zhejiang China (Mainland) Brand Name: seanjoy Model Number: SJL-SP Circulation Type: Direct / Open Loop (Active) Heating System: Thermosyphon (Passive) Connection Type: Direct-Plug Certification: CE Place of Origin: Zhejiang, China Brand Name: SJL Model Number: SJL-VT Type: Evacuated Tube

Product Features:

Solar single target coating tube

Dia.:47/37mm, 57/47mm

Length: 1500mm/2100mm,

Borosilicate Glass 3.3

Business Terms:

Port: Shanghai / Ningbo

Minimum Order Quantity: 1 Piece/Pieces

Supply Ability: 2000 Piece/Pieces per Day

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

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Specifications and Product Details:

Item Name:

Vacuum Tube for Solar Water Heater

Item No.:

SJL-VT

Description:

All glass evacuated tubes are the key companent of solar collectors. The evacuated tube is similar to a conventionak dewar flaskk and consists of two borosilicate glass tube, a glass with high chemical and thermal shock resistance. 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 virtually eliminated heat loss by conduction and convection.

Parameter:

1). Outer Diameter: 47mm / 58mm

2). Inner Diameter: 37mm / 47mm

3). Size of tube: 1500mm / 1800mm / 2100mm

4). Meterial: Borosilicate Glass 3.3

5). Thickness of tube: 1.6±0.1mm,2.0±0.1mm

6). Absorbing Coating: Tri-elements caoting (ALN/ALN-SS/CU) or AL-N-AL coating

7). Thermal Expansion: 3.3*10-6/k

8). Absorption of selective coating: =94%-96%(AM1.5)

9). Emission of selective coating: 4%-6%(80±50)

10). Cofficient of everage heat loss: 0.6-0.7W

11). Vacuum Rate: 5*103pa