1. EN12975 & solar key mark
2. Anti-freezen & pressurized
3. 15 Years Warranty for vacuum tube
4. Delivery: 10-15 day
Port: Shanghai
Minimum Order Quantity: 10 Set/Sets
Supply Ability: 8000 Set/Sets per Month
Payment Terms: L/C,T/T,Western Union
Contact SupplierPackaging Detail: Packaging Detail: Standard Export CartonDelivery Detail: 10 days
Delivery Detail: Within 20days
SKcompact unpressurized solar water heater solar water heater detailed specification:
1) Outer tank: stainless steel sheet with 0.4mm thickness
2) Inner tank: food grade SUS304-2B stainless steel with 0.4mm thickness
3) Supporting frame: 1.5mm galvanized plate
4) Vacuum tube: Φ47mm×1500mm
5) Tube quantity: 12,15,20,25,30 and so on
6) Insulation: 55mm thickness polyurethane foam
7) Tank capacity: 120 ,150,200,250,300L and so on
8) Area of collector: 1.80 m2and so on
9) Hail resistance: 25mm
10) Pressure resistance: 0.03Mpa
Working principle:
The non-pressure thermosiphon systems rely on the nature circulation of the water between solar tubes and the water tank. Thermosiphon systems work on principal of heat rising. The water enters in the bottom of the collector and rises to the tank as it warms. The advantage of this system is that solar heat is stored in a well-insulated tank, so hot water can be used at any time without the penalty of overnight losses. Moreover the insulation of the tank can protect heat during 3 days without heat loss.