Sunstar high pressure stand alone model is a new type of solar water heater which adopts advanced heat pipe and all glass vacuum tube technology. Highly efficient vacuum tube absorbs heat from sunlight and heat pipe transfers heat to the condenser end of itself. Condensor indirectly contacts with water through a copper cap and it boils water by releasing heat gained from vacuum tube. The available size of the tank ranges from 150l to 250l.
Thermosyphon solar water heater relies on the natural circulation of water between the collector and the tank or heat exchanger. As water in the vacuum tubes is heated it rises naturally into the tank, while cooler water in the tank flows down to the bottom of the vacuum tubes, causing circulation throughout the system.
Technical specificationa
*Both of inner and outside water tank shell are made of SUS3042B food grade stainless steel plates, welded by argon arc. Water is pure and drinkable.
*Heat insulation of water tanks adopts polyurethane foam, thickness is 55mm.
*Silicon rings to connect and seal them.
*The tubes and supports are adjustable, power bearing is average, and can assure the vacuum tubes to use for long time.
*Whole glass vacuum tubes adopt super hard borax and silica glass.
*Absorb rate:=93%, thermal radiation rate:=6%(100 íµ)
*Resist 25mm hail, using life can last 15 years.
*Temperature when exposed to sun without water:250íµ, 2.5hours to boiling if using single tube.
*If you use electrical appliances to aid heating, to switch off the power supple before boiling.
*To test the water temperature before using, in order to avoid scalding.
Heat pipe solar collector
1) reliable and efficient twin-glass solar tubes;
2) copper heat pipes for rapid heat transfer;
3) easy plug-in installation;
4) free maintenance;
5) suitable for mains pressure water (up to 8 bar/116psi);
6) corrosion resistant silver brazed copper header;
7) aluminum frame;
8) powder coated (black, brown or silver) aluminum casing;
9) stable solar conversion during the day;
10) the perfect solar collector for domestic solar water heater systems;
11) ideal for commercial solar water heating applications.
An open loop system is for climates where there is no risk of freezing. Recirculation freeze protection can be provided by the recirculation feature in the controller. An open loop water heating system provides many advantages. It is the simplest and typically the least expensive active system to install. There is no heat exchanger, which allows efficient heat transfer directly to the water. The system operates at standard line pressure. It is simple to add capacity to the system if demand changes. The system integrates easily with existing systems.
