Non-pressure Flat Plate Solar Heater

Non-pressure flat plate solar water heater working principle:
Non-pressure solar water heater is such a kind of thermosiphon solar water heating device, which flat plate collector placed below high pressure hot water tank. The tank and flat plate are connected with two circulation pipes to form a open-loop solar water heating system, tank is non-pressure design, based on gravity. The whole system only use water, can’t use other liquid as circulation medium. By continuously circulating in this way, the water is heated directly inside flat collector and rise to be stored inside hot water tank.
Non-pressure flat plate solar water heater characteristic:
1. Low cost, most economic among flat plate solar water heater.
2. Water tank non-pressure design, just based on the gravity.
3. Suitable for hot area, where is no frozen risk area.
4. No Glycol, No Chemicals! 

          
 
Outer tank
Cold water inlet
Magnesium rod
Air vent
Insulation layer
Inner tank
Electric heater
Hot water outlet
Circulation outlet
Cold water inlet
Tempered glass
Header tube
Back sheet
Insulation layer
Riser pipe
Absorber plate
Frame
Support
Non-pressurized Solar Water Heater Key Components

Direct flat plate solar water heater specification
1. Inner tank: Stainless steel SS304-2B / SS316L.
2. Outer tank: Galvanized steel / stainless steel / PVDF.
3. Insulation layer: Polyurethane foam, 41 kg/ m3 high density.
4. Support: Painted galvanized steel / Stainless steel.
5. Flat plate solar collector: 2m2 size, blue titanium coating.
6. Working pressure: non-pressure.
7. Capacity: 150L-300L.

Parameter table:
Model Tank capacity Absorber Area Person No. Loading Qty. (set)
(L) (m2) 20GP 40GP 40HQ
JFP-150N 150 2 3 40 85 96
JFP-250N 250 2.5 5 28 60 65
JFP-300N 300 4 6 24 52 60

Necessary Accessories:
Check valve
- Used for control one-way flow and prevent water from flowing back.
- Material: brass.
 
Magnesium rod
- Used for tank protection
- Φ22 x 300mm length(small)
- Φ28 x 600mm length(big)
Item No. Size Quantity Item No. Size Quantity
812 007 002 3/4 inch 1 unit 812 801 002 4 inch, 1 inch 1 unit
 
Insulated pipe
- Pipe: Corrugated stainless steel
- Insulation pipe
- Connection size: 3/4 inch
 
Brass elbow
- Material: Brass
- Connection size: DN22 ×3/4 inch
Item No. Size Quantity Item No. Size Quantity
812 007 054 3/4 inch 2 unit 812 002 807 3/4 inch 2 units
 
Coupling
- Used for flat collector
- Material: Brass
- Connection size: DN22 x DN22mm
 
Plug
- Used for flat collector
- Material: Brass
- Connection size: DN22mm
Item No. Size Quantity Item No. Size Quantity
812 010 004 DN22 mm 0 / 2 units 812 010 042 DN22 mm 2 units

Optional Accessories:
Thermostatic mixing valve
- Material: Nickle plated brass
- Cold water temperature: 5-29℃
- Hot water temperature: 50-95℃
- Regulating temperature: 35-55℃
- Working pressure: 0.03-1 Mpa
 
Electric heater
- Material: Incoloy 800
- Super anti-corrosion& heat conduction, dry-heat resistant
- Connection size: 1 inch
Item No. Size Quantity Item No. Power Quantity
812 007 052 3/4 inch 1 unit 812 900 191 1500W, 2500W 1 unit
 
Controller (luxury version)
- Used for non-pressure solar heater
- Intelligent cold water loading
- Water temperature display
- Intelligent control electric heater
 
Controller (economic version)
- Used for non-pressure solar heater
- Intelligent cold water loading
- Water temperature display
- Intelligent control electric heater
Item No. Voltage Quantity Item No. Voltage Quantity
812 003 501 110V/ 220V 1 unit 812 007 008 110V/ 220V 1 unit