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Heat Pipe For Solar Water Heater
Feature:
1) High heat effectiveness: higher than all glass solar vacuum tube by 15%
2) heat pipes conduction: successfully prevents the defects of tube breakage and low power output caused by water fouling and deposits or dust and sand
3) Prevents the tube from being easily broken caused by volume expansion when water freezes in the frigid season
4) Low thermal capacity makes the tube start up quickly
5) Energy output within only 2 minutes of sunshine
6) Insulation temperature can reach 250degrees, average heat efficiency can still be more than 50%; even under 50degrees
7) High efficient selective absorptive coatings and vacuum heat insulation technology ensure the tube has higher heat output in cloudy weather and in moist areas, especially in winter
8) Solar collecting plate is sealed inside a high quality borosilicate glass tube with 5 x 10-3Pa of vacuum, to stop corrosion; even in moist conditions
Metal-glass evacuated solar collector tube consists of a triple target coating tube and aflat or curved aluminum plate inside attached to a copper heat pipe.
Technical Parameter:
Structure | All-glass double-tube co-axial structure | |
Glass material | High borosilicate 3.3 glass | |
External pipe diameter and thickness | Φ=47±0.7mm &=1.6mm Φ=58±0.7mm &=1.6mm Φ=70±0.7mm &=2.0mm | |
Internal pipe diameter and thickness | Φ=37±0.7mm &=1.6mm Φ=47±0.7mm &=1.6mm Φ=58±0.7mm &=1.6mm | |
Pipe length | 500mm 850mm 1200mm 1500mm 1600mm 1700mm 1800mm 1900mm 2000mm 2100mm | |
Absorptive coating property | Structure | Cu/SS-ALN(H)/SS-ALN(L)/ALN |
Sediment method | 3 target magnetron sputtering plating | |
Specific absorption | 0.93~0.96(AM1.5) | |
Emission ratio | 0.04~0.06(80°C±5°C) | |
Vacuum tightness | 5.0×10-3Pa | |
Idle sunning property parameters | 260~300 m².°C /KW | |
Solar irradiation for obtaining a preset water temperature | H≤4.7MJ/ m²(Φ58) | H=3.7~4.2MJ/ m² |
H≤3.7MJ/ m²(Φ47) | H=2.9~3.2MJ/ m² | |
Average heat loss coefficient | 0.4~0.6W/(m².°C) | |
Resistant Hail | 25mm | |
Life aged | 15 years | |
Heat Pipe For Solar Water Heater