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500Liter Double Coil Heater Pipe Solar Water Heater

500Liter heat pipe solar water heaters
Model: FD-SP2-500L
Heat pipe solar water heaters features
1. The upright tank can make the water temperature to a high level. It can hot the water instantly. 
2. The tank inside the building, the hot water loses less energy than the normal one 
3. The solar collector and the tank of solar water heater is separated, that makes the system combine with the building perfectly, which will reduce the sightseeing for the building and environment around 
4. Back up with electric heater so that in the day without sunshine hot water can also be used
5. Can be combined with gas or electric heater 
6. Max. Pressure: 12bar; Operating Pressure: 6 bar
7. It can be used for other function, such as warming
Heat pipe solar water heaters working principle
1. The solar collector absorbs solar energy and transmits it to the Heat pipe solar water heater tank through circulation 
2. When the temperature of the collector reaches the set value, the controller starts the circulation pump automatically
3. The circulation pump makes heat-conducting liquid circulate automatically
4. The heat-conducting liquid transfers heat to water by lower heat exchanger in the water tank. 
5. When the temperature difference between solar collector and heat pipe solar water heaters tank doesn't reach the set value, the circulation pump will be shut automatically 
6. In case the temperature of the water tank does not reach Tmax, Electric Heating Element will start to work automatically
Heat pipe solar water heaters working station component
1. Operating screen 
2. Manometer 
3. Pump speed adjust switches 
4. Temperature difference circulation pump 
5. Flow rate indicator 
6. Return circuit connector 
7. Safety valve 
8. Expansion vessel connector9. Return circuit connector 
10. Wall mounting 
11. Expansion vessel:8L 
12. Pressure resistance: 10 bar pressure for expansion vessel
Heat pipe solar water heaters specification
 Heat pipe solar water heaters
 Material of out manifold
 0.55mm thickness color steel/ fluorine carbon steel
 Material of inner tank
 Food grade 2.0 mm thickness SUS304 stainless steel            
 Tank insulating layer
 40mm 45kg/m³ high-density polyurethane foamed
 Inlet and outlet hole
 Male G1''
 Max pressure
 0.6 Mpa
 Solar collector tube
 3.3 Borosilicate glass with N/Al coating
 Thickness of glass tube
 Vacuum tube tightness
 P<=0.005 Pa
 Emission ratio
 Idle sunning property parameters
 Average heat loss coefficient
 2.0mm thickness aluminum alloy
 Tank weight
 Tank size
 700mm Dia x 1850mm Height
 Tank capacity
 Solar collector
 2pcs 58x1800x30tube solar collector
 Absorber area
 Working station
 SP106,SP116,SR962 working station
 Heat exchanger length
 Upper:15m, Underside:25m
Benefits of this kind heat pipe solar water heaters:
1. Prolong the life of your existing water heater

2.Costs less than an electric, gas or oil water heater

3.No maintenance required

4.Lasts longer than a traditional hot water heater

5.Reduce your water heating costs

6.Reduce your carbon footprint


Heat pipe technical data


 Measured value

 Heat conduction coefficient


 Axial heat transition auantity


 Heat conduction speed


 Axial temperature difference


 Starting speed


 Starting temperature


 Working temperature range


 Resistance to high temperature

 No deformation in 48hours under 250C high temp condition 

 Resistance to low temperature




 Condenser size
 Dia 14mm,Dia 24mm, thickness 0.5mm,0.6mm,0.7mm



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