all glass vacuum tube

1. intercept efficiency: more than 93% 2. low heat reflection properties: less than 0.86% 3. working pressure:0.6 Mpa

all glass vacuum tube:

1. vacuum tube consists of two glass tubes, outer tube and inner tube

2. outer tube is made of extremely strong transparent borosilicate glass and adopted megnetism control

3. inner tube is made of borosilicate glass 3.3

4. absorptive coating property: AL/AL-ALN(H)/AL-ALN(L)/ALN

5. expansion coefficient: 3.3*10-6

6. hardness: 7

7. excellent solar heat absorption

8. intercept efficiency: more than 93%

9. low heat reflection properties: less than 0.86%

10. main types of vacuum tube: 47*1500, 58*1800, 70*2000, 70*2100mm

11. stagnation temperature: 180~190 degrees celsius

12. heat insulating time: 72~80 hours

13. hail resistance: 25mm

solar collector		Qty	Tank capacity	AbsorbArea	Measure	Total Weight	Loading quantity
							20'GP	40'GP	40'HQ
		(pcs)	(liters)	( m2 )	m3	(kg)	(sets)	(sets)	(sets)
Φ58-1800-15		1	150	2.1	0.75	80	34	72	90
Φ58-1800-20		1	200	2.8	0.95	146	27	60	75
Φ58-1800-30		1	300	4.2	1.3	161	20	43	54

all glass vacuum tube