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Solar Vacuum Tube Heat Pipe

Solar Vacuum Tube Heat Pipe

Solar Vacuum Tube Heat Pipe
CategoriesSolar Vacuum Tube
AlbumView larger image
BrandInlightsolar
ModelIL-58
TypeSolar Water Heater Parts
Model58*1800mm
Unit PriceUS $ 6-10 / piece
Update Time2018-12-11
Detail Information

Heat Pipe Vacuum Tube Technical Parameters

 

General Parameters

Heat Pipe Parameters

Models

 Φ47X1500mm,  Φ58X1800mm

Heat transfer substance

mixer of some inorganic elements

Glass material

High borosilicate glass 3.3

Heat conducting wise

from liquid to gas and corpuscles

Wall thickness

1.6mm

Application temperature

-40 ~ 400oC

Diameter of condensor

Φ14*65mm

Axial thermal conductivity

27.2 MW/M2

Vacuum tightness

less than 5*10-3Pa

Radial thermal conductivity

145 KW/M2

Absorber material

Aluminum fin

Heat transfer efficiency

≥ 95%

Absorptive Coating

Cu/SS-ALN(H)/SS-ALN(L)/ALN

Equivalent heat conductivity

6000-15000 times of pure silver

Absorption coefficient

≥90%

Duration of element

≥ 15 years

Emission coefficient

≤7.5%

Stagnation situation

No pipe crack

Hail resistance

Φ25mm

Heat loss

Fast no heat resistance

Start up temperature

≤25oC

Compatibility

Good compatibility with metal

 

Features of Heat Pipe Vacuum Tube:

Solar heat pipe vacuum tube, there is anti-freeze liquid as heat-transferring medium in heat pipe which is hollow inside evacuated, by this design the water never goes into glass vacuum tube so the tube will never be broken in extremely cold weather, efficiency generated by heat pipe vacuum tube is about 55% in summer and 42% in winter more than that of normal glass vacuum tube, this type is especially for pressurized solar water heating system.

 

Performance of Heat Pipe:

1). High Thermal Conductivity, Heat conductivity of heat pipe is much higher than the common metal, from the above table, we can see that because it transfers heat inside heat pipe by gas and liquid phase, heat resistance is very small, so the axial heat conductivity is very high, while the radial heat conductivity is general.

2). Good Isothermal Performance, When heat pipe is working, the working fluid temperature inside it is saturation, the saturated working fluid temperature is the same, but it will absorb or release a lot of heat, therefore, heat pipe can transfer much heat under isothermal circumstances theoretically, whose outside behavior is the isothermal performance of heat pipe which is very good. The axial temperature of heat pipe is almost the same.

3). Reversibility of Heat Flow, a heat pipe with wick, if only the capilary force is enough, it will begin transfer heat, so that it makes the temperature of two ends tends to equal.

 

 

 

 

Solar Vacuum Tube Heat Pipe

 

Solar Vacuum Tube Heat Pipe

 

Solar Vacuum Tube Heat Pipe

 

Solar Vacuum Tube Heat Pipe

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