solar vacuum 1.high resistance on pressure 2.bear freezing temperature 3.consist of high quality tri-target vacuum tube

WHY CHOOSE US

Primary competitive advantages: 1) CE, CCC, ISO9001: 2000, CNAL

2) Good price and quality 3) Prompt delivery 4) Environmental Protection 5) OEM order is accepted 6) experience of export to 49 countries

7) International quality warranty: 5 years for whole system and 15 years for vacuum tube.

working principle

 The selective coating on the inner cover of the evacuated tubes converts solar energy into heat energy and transfers heat to the heat pipes by aluminum fins,the liquid in the heat pipe by aluminum fins,the liquid in the heat pipe changes into vapour which rises to the condenser.The heat then passes thrpugh the heat exchanger and the becomes liquid,returning to the base of the heat pipe.The heat conducts to the heat transfer liquid(ante-freezing liquid or water)via a copper pipe.This transference of heat into the liquid creates a continuous circulation as long as collector is heated by the sun.

solar vacuum tube with the heat pipe,new tri-element vacuum tube

1.wide applicable range:as the heat pipe has less heat capacity,it can be started quickly even under cloudy fine day and collect heat effiectively.It can effectively prevent lowing of heat efficiency due to frost cracking or sacling.

 2.the unique connection between the heat pipe and the vacuum tube can ensure both sealing and replace of damaged glass vacuum tube.

3.each individual tube can work independently,and the whole machine can still work if individual tube is damaged.The senice life of the heat pipe can be longer than 15 years.

4.Higher heat efficiency:advanced heat transfering style of the heat pipe,excellent selective absorb coating and perfect combination with high vacuum heat preservation.

 specification

Structure	All-Glass Double Tube Co-Axial Structure
Glass Material	High Borosilicate 3.3 Glass
External Pipe Diameter&Thickness	dia.=47±0.5mm &=1.6mm,dia.=58±0.5mm &=1.6mm, dia.=70±0.5mm&=2.0mm
InternalPipe Diameter&Thickness	dia.=37±0.5mm &=1.6mm,dia.=47±0.5mm &=1.6mm, dia.=58±0.5mm &=1.6mm
Pipe Length	1500mm,1600mm,1700mm,1800mm,1900mm,2000mm,2100mm
Absorptive Coating Property	Structure		Cu/SS-ALN(H)SS-ALN(L)/ALN
	Sediment Method		Three Layer Magnetron Sputtering Plating
	Specific Absorption		as=0.92-0.96(AM1.5)
	Emission Ratio		0.01-0.03(80°C±5°C)
Vacuum	P≤2.0*10-3Pa
Idle Sunning Property	Y=260-300m²°C/KW
Solar Irradiation for Obtaining a Preset Water Temperature	H≤4.7 MJ/m²(DIA.58)			H=3.7-4.2MJ/m²
	H≤3.7 MJ/m²(DIA.47)			H=2.9-3.2MJ/m²
Average Heat Loss Coefficient	Uit=0.4-0.6w/(m².°C)
Pressure-Endure Ability	1.0MPa
Hail-Endure Ability	30mm
Lifetime	15years

Heat Pipe Solar Water Heater Vacuum Tube