300L Sperated Pressurized solar water heating

split  solar water heating is a system composed by three main parts.

solar water heating tank is a storage container to supply hot water for shower.

solar collector is the core part which absorbs solar energy to be heat energy.

Workstation is a control and safety device to transfer the heat energy from solar collector to solar water heater tank.

Usually the solar water heating tank are with copper coil as heat exchanger for getting heat from solar collector.

People may asked : " Can we use solar water heating tank without heat exchanger inside? "

My answer is definitely fine for solar water heating system working without heat exchanger. 

Solar collector and solar water heating tank can be directly heat exchange by water circulation through circulation pump.

Some people may worry about extremly cold climate would cause damage of the pipeline between tank and solar collector.

Don't worry ! The workstation has a functional to anti-freezen by push the hot water from tank once temperature in solar collector lower than the setting valve.

But my suggestion is that if you are in extremly cold area, it is best to have copper coils as heat exchanger for tank. And system working with anti-freezen fluid as heat exchanger media.

Fuctional of anti-freezen would cause heat energy loose. so the copper coil as heat exchanger would help to solve the problem.

Our 300L solar water heating system  details feature as below:

  Inner tank: SUS304-2B food grade stainless steel 1.5mm

  Outer tank :color steel 0.45mm

  Tank insulation: high density polyurethane integrated foam 50mm

  If need with Copper coil ,the size suggest with diameter 12mm/1mm  and 15meters each coil

  System bear max pressure 12Bar 

  working pressure suggest 6bar

  Solar Collector manifolder design  with white aluminum alloy 1.8mm 

  Solar Collector flow  passage  material is high quality red copper size Φ35*1.0mm, inlet & outlet Φ22mm

Working way:

Separated pressurized solar water heating is a closed loop solar water heating system.

I.  solar water heating  system is active system working by circulation pump.

II. It is composed by three main parts: pressurized tank ,solar collector and workstation.

III.  Evacuated solar  collector absorbs solar energy by vacuum tubes and exchange the heat with the water tank through workstation.

III.  When the temperature difference of solar collector and storage tank reaches the set value, the controller of workstation starts triple circulation pump to work automatically. The circulation pump makes heat-conducting liquid circulate automatically.

V. Then the heat-conducting liquid transfers heat to water by heat exchanger in the tank to heat the water to be hotter and hotter.

In order to choose the right system, following is simple introduction of systems.

There are three types solar water heating system design for usage： 

A: Storage Tank without coil. It is an economic design. The tank directly exchanges the hot water with solar collector by circulation pump which control by controller.

B: Storage tank with one  copper coil, this coil is for the circulation between solar collector and water tank and circulation pipeline usually filling with anti-freeze fluid (glycol for example) as heat exchange media.

C :Storage tank with two copper coils: one for collector and tank circulation, other one for heating equipment or space heating   (such as connect to gas/electric boiler , and for floor heating system). Solar circulation also request fluid as heat exchanger media.

To choose the right solar water heating  system and parts:

We will suggest you to tell me the installation location, any existing heating equipment. And then we will make a design for you. We have large ranges of capacity from 100L to 1000L for house use.

For the system usage you may need the following parts:

1.    Air vent: to release the air in system

2.    Expansion tank :balance the pressure of system

3.    Controller for system type one (tank without coil):brain of system

4.    Workstation (suggestion for tank with coils) :brain and safety device

5.    Thermostat valve （for a constant hot water）:easy hot water mixing

6.    Pipeline and insulation

7.    Fittings (for pipeline and system parts)

8.    Solar bolts and hooks (for solar collector fixing)

9.    Heat exchanger (for outside tank heat exchange)

10. Safety valve

11. Filling valve (easy filling fluid)

12. Motorized valve (change or close/open energy flow way)

13. PT valve

14. One-way valve

 15. Magnesium bar