Single target all-glass vacuum tube

Single target all-glass vacuum tube Material:High borosilicate glass 3.3 Outside diameter:Φ47±0.7mm &=1.6mm Φ58±0.7mm &=1.6mm Internal diameter:Φ37±0.7mm &=1.6mm Φ47±0.7mm &=1.6mm Specification length:47*1800mm,58*1800mm Solar absorption efficiency: 0.90 0.93(AM1.5) vacuum tightness:P≤5.0×10¯³(Pa) Maximum stagnation temperature:260 300oC Solar irradiation for obtaining a preset water temperature: H=4.1-4.4MJ(58mm) H=3.1-3.4MJ(47mm)