pressurized solar water heater
1.15years life
2.SRCC,Solar Keymark,ISO9001,ISO14001,CE
3.OEM service
4.Delivery time:15days
Port: Shanghai/Ningbo
Minimum Order Quantity: 1 Set/Sets
Supply Ability: 300 Set/Sets per Day
Payment Terms: L/C,T/T
Contact SupplierPackaging Detail: Standard export package
Delivery Detail: 7days for sample, 15days for 20' container
Evacuated tube collectors are the most efficient collectors available. Each evacuated tube is similar to a thermos in principle. A glass or metal tube containing the water or heat transfer fluid is surrounded by a larger glass tube. The space between them is a vacuum, so very little heat is lost from the fluid.
These collectors can even work well in overcast conditions and operate in temperatures as low as -40°F. Individual tubes are replaced as needed.
Passive systems require no pumps. Natural convection moves water from the collectors to the storage tank as it heats up.