Name: Evacuated vacuum tube
SKU: NS-VT1800
Availability: InStock

Evacuated vacuum tube

May 30, 2024

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/ By Casey

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Price range: $60.00 through $475.00

SKU: NS-VT1800 Category: Accessories

Description

High 93%-94% efficiency evacuated solar tubes.

Will also suit most other third party solar hot water syatems with a 58mm insert.

10 year warranty on North Solar vacuum tubes

Single Target All Glass Vaccum Tube

Efficiency 93%-94%
Vacuum tube size: 58*1800mm
Vacuum tube composition: single target vacuum tube composed of super hard borax and silica glass, efficiency 93%-94%,58*1800mm
Hail rating: 25mm (dia)

Structure		All-glass double-tube co-axial structure /Cu/SS-ALN(H)/SS-ALN(L)/ALN
Glass material		High borosilicate 3.3 glass
Outer tube diameter and thickness		Φ=58±0.7mm & =2mm
Inter tube diameter and thickness		Φ=58±0.7mm & =1.6mm
Tube Length		1800(±5mm)
Absorbing coating properties	Idle sunning property parameters	Y=260~300㎡. ℃/KM
	Sediment method	Three target magnetron sputtering plating
	Specific absorption	0.93~0.96(AM1.5)
	Emission ratio	Σn: 0.04~0.06(80℃±5℃)
Vacuum tightness		P≤5.0×10-3(Pa)
Stagnation parameter		>250M2C/KW
Solar irradiation for obtaining a preset water temperature		H≤4.7MJ/㎡(￠58) H=3.7~4.2MJ/㎡ H≤3.7MJ/㎡(￠58) H=2.9~3.2MJ/㎡
Average heat loss coefficient		<0.4~0.6W/(㎡. ℃)
Lifetime		15years

Quantity	Single Tube, Box of 10