Zijin Solar Glass Tubes use vacuum tube solar collector to eliminate the heat loss of the gas convection.
Minimum Order Quantity: 100 Piece/Pieces
Supply Ability: 5000 Piece/Pieces per Week
Payment Terms: L/C,D/P,T/T
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Zijin Solar Glass Tubes use vacuum tube solar collector to eliminate the heat loss of the gas convection and conduction, and the application of selective absorbing coating makes the radiation heat loss down to the minimum. It structures pressure well and can work in high temperature.
Structure | All-glass double-tube co-axial structure | |
Glass material | High borosilicate 3.3 glass | |
External pipe diameter and thickness | D=47±0.7mm &=1.6mm D=58±0.7mm &=1.6mm D=70±0.7mm &=2.0mm | |
Internal pipe diameter and thickness | D=37±0.7mm &=1.6mm D=47±0.7mm &=1.6mm D=58±0.7mm &=1.6mm | |
Pipe length | 800mm 1200mm 1500mm 1600mm 1800mm 1900mm 2000mm 2100mm | |
Absorptive coating property | Structure | Cu/SS-ALN(H)/SS-ALN(L)/ALN |
Deposition Method | Three high magnetron sputtering plating | |
Absorption than | as=0.93~0.96(AM1.5) | |
Emission ratio | εh=0.04~0.06(80°C±5°C) | |
Vacuum tightness | P≤50×10-3(Pa) | |
Idle sunning property parameters | Y=260~300m2.°C/KW | |
Solar irradiation for obtaining a preset water temperature | H≤4.7MJ/ m2(D 58) | H=3.7~4.2MJ/ m2 |
H≤3.7MJ/ m2(D 47) | H=2.9~3.2MJ/ m2 | |
Average of heat loss coefficient | ULT=0.4~0.6W/( m2.°C) |