2012 Split pressurized solar collectors with CE,SolarKeymark,SRCC certified

High pressurized solar collectors 1)CE,SRCC,Solar keymark 2)Easy installation&delivery 3)Cost effective 4)5 year warranty.

High pressurized solar collectors 

 Heat pipe series solar collectors are all-glass evacuated tubes combined with inside metal heat pipes. The selective coating on the inner tube converts solar energy into heat energy and transfers to the heat pipe by an aluminum fin. The liquid in the heat pipe changes into vapour which rises to the condenser. The heat conducts to the liquid (anti-freeze liquid—glycol or water) inside the manifold copper header pipe and the vapour becomes liquid, returning to the base of the heat pipe. This continuous circulation transfers heat from the heat pipe to the manifold as long as sun is heating the collectors. Evacuated tube solar collector utilizes energy from the sun to provide hot water and space heating for homes and businesses.

High pressurized solar collectors Parts and Specifications Details: 

Collector manifoldGlass wool insulationCopper header pipe (liquid flow)Stainless steel mounting frameEvacuated tube (solar absorber)Heat transfer fin and heat pipe

1. Manifold casing material	Aluminum Alloy / SU304 stainless steel
2.Insulation	Rock wool/PU
3.Header pipe material	Red Copper TP2 (Ø35x0.8mm) ; 1.70m
4.Frame material	Aluminum Alloy / SU304 stainless steel
5.Vacuum tubes	58*1800mm/47mm*1500mm three target vacuum tubes
6.Heat pipe material	Red Copper TU1 Top: Ø14* 1mm;     Body: Ø8* 0.7mm
Rubber seals and rings	UV stabilized high temperature silicon rubber
Testing pressure	10 bar/1MPa
Collector mounting	Flat roof/inclined roof
Mounting angle	10-70 degree
Inlet outlet	3/4"BSP as standard , NPT threads are customized.
Aluminim fin	single long Aluminum alloy fin,
Manifold casing material	6063 Aluminum alloy frame(1.8mm)
Insulation material in manifold caseing	Glass fiber/(rock wool)/PU
Thickness of insulation(mm)	45
Density of insulation (kg/m3)	90
Frame material	6063 Aluminum alloy frame(3mm)
Frame and manifold casing finish	Black Powder coated
Sealing Materials	EPDM

High pressurized solar collectors 

Quality ControlMaterial quality and cleaning is extremely important to the creation of a good quality heat pipe. If there are any impurities inside the heat pipe it will effect the performance. The purity of the copper itself must also be very high, containing only trace amounts of oxygen and other elements. If the copper contains too much oxygen or other elements, they will leach out into the vacuum forming a pocket of air in the top of the heat pipe. This has the effect of moving the heat pipe's hottest point (of the heat condenser end) downward away from the condenser. This is obviously detrimental to performance, hence the need to use only very high purity copper. The heat pipe used in ARROW solar collectors comprises two copper components, the shaft and the condenser. Prior to evacuation, the condenser is brazed to the shaft. Note that the condenser has a much larger diameter than the shaft, this is to provide a large surface area over which heat transfer to the header can occur. The copper used is oxygen free copper, thus ensuring excellent life span and performance. Each heat pipe is tested for heat transfer performance and exposed to 300°C temperatures prior to being approved for use. For this reason the copper heat pipes are relatively soft. Heat pipes that are very stiff have not been exposed to such stringent quality testing, and may form an air pocket in the top over time, thus greatly reducing heat transfer performance.

High pressurized solar collectors 

Freeze Protection Even though the heat pipe is a vacuum and the boiling point has been reduced to only 25-30°C, the freezing point is still the same as water at sea level, 0°C. Because the heat pipe is located within the evacuated glass tube, brief overnight temperatures as low as -40°C will not cause the heat pipe to freeze. Flat-plate collector will be damaged by repeated freezing. The water used in heat pipes still freezes in cold conditions, but it freezes in a controlled way that does not cause swelling of the copper pipe.

2012 Split pressurized solar collectors with CE,SolarKeymark,SRCC certified