Description

Product description: Solar water heater vacuum tube All-glass evacuated solar collector tube with heat pipe Feature: 1ï&frac*4;Žhigher absorbance, lower emittance, dry exposure up to **0。C and freezing resistance can up to **5。C 2ï&frac*4;Žhigher effciency, more heating Absorbance coating layout: ï&frac*4;ˆ1ï&frac*4;‰metal reflecting layer(copper) ï&frac*4;ˆ2ï&frac*4;‰absorbance layer(ss aluminumnitride metal ceramic) ï&frac*4;ˆ3ï&frac*4;‰remittance reducer layer(aluminumnitride) Material borosilicate glass 3.3 Coating Ss-C/Cu selective compound absorb coating Absorbance ≥0.*2 Vacuum degree ≤5×***3pa Terseness and nice profile, posh skyline of construction. Comprehensive *5 years limited warranty.