high- corrugation vacuum tube

Tube Length

1200(±5mm)1500(±5mm)
1700-1800(±5mm)
2000(±5mm)

Absorbing
coating
properties

Configulation

1200(±5mm) 1500(±5mm)
1700-1800(±5mm)
2000( ±5mm)

Mothod to deposition

Graded A1-N/A1 solar selectuve absorbing coating

absorptance

as 0.88-0.93

Emittance

Σn:-.08-0.04

Vacuum

p ≤ 2 × 10-3

Stagnation parameter

250M2C/KW

Sloar rediance exposure for obtaining a preset water temperature

2.8MJ/M2

Average heat loss coefficient

0.8W(M2C)

  Lifetime

15years