solar system/solar tube Structure :/AL/AL-ALN(H)/AL-ALN(L)/ALN pass CE ,ISO9001...

solar syetem /solar tube

E xtermal pipe diameter and thickness		Φ =47 ± 0.7mm&=1.6mm Φ =58 ± 0.7mm&=1.6mm
I nternal pipe diameter and thickness		Φ =37 ± 0.7mm&=1.6mm Φ =47 ± 0.7mm&=1.6mm
Absorbing coating property	Structure	/AL/AL-ALN(H)/AL-ALN(L)/ALN
	Sediment method	Single  targe magnertron sputtering plating
	Specific absorption	a s =0.93~0.96(AM1.5);
vacuum tightness		P<=5.0x10 -3  Pa;
Idle sunning property parameters		Y=260~300m 2 . ° C/KW;
Average heat loss coefficient		ULT=0.4~0.6W/m 2 .°C

                                                                                                                                                                                                                                                                                                                                   

solar system tube