Solar water heater panels

flat plate solar water heater

Name:Buffer Tank
The design of the Solar Water Heater Panels is a culmination of nearly 15 years of feedback from installers and solar professionals all
over the world and aims to meet their requirements with the following key features:
●Easy and Safety Packing design (Tank, frame and Flat plate collector in separate packages)
● Top Color Steel for Outer tank, Stainless Steel 304-2B for inner tank
● Galvanized Steel with oil printing mounting frames
● Extremely reliable Tank design, less brazing points
● High efficiency Germany Tinox energy AL solar absorber
● Ultra lightweight top quality rock wool insulation
● UV stabilized components
● High tensile grade 6063-T5 black anodized aluminum body
● High transparency solar glass
How solar water heater panels Work
The Flat Plate Solar Water Heater is comprised of three main parts:

Pressurized Flat Plate Solar Collector

Absorbs solar energy and converts it to usable heat. The header and riser pipes are brazed together to form a harp shaped heat exchanger that the solar system heat transfer fluid circulates through.

Water Tank

It stock the hot water from the Flat plate collector, and keep the heat.

Mounting Frame

Strong and easy to install with various options to match different mounting methods.
Suneco Solar Water Heater panels are rated for up to 298kg/m2    /  62lbs/ft2 snow loading.  The roof and attachment points must also be suitably rated.
Mounting frames are available for the Solar Water Heater panels that can withstand category C cyclonic winds (250km/h / 159mph).  For such conditions there are specific requirements that must be observed.

Tips for improving solar water heater panels performance

Would you like your solar water heater to deliver the best performance? Consider deploying the following tips.

  1. Get rid of dust and other obstacles

The heating capacity of a solar water heater greatly depends on its exposure to solar radiation. The more it is exposed the better it will perform.

Obstacles such as dust, leaves, and other solid particles that have accumulated on the surface of the collector and screen can block a significant amount of solar radiation.

Weekly cleaning of the solar heater panels can go a long way in ensuring that your heating system performs to the optimum levels.

The good news is solar panel cleaning is a job that you can easily do on your own without requiring an expert’s help. You only need water, mild detergent, and a piece of cloth.

To avoid such problems in the future, make an effort to clear all the vegetation around the collector and the solar water heater in general.

  1. Check the conditions for the solar water heater panels components

Inspect your solar water heater and take note of any signs of damages that will demand immediate repair.

The simplicity of the solar water heater makes it easy to do a round-check inspection.

You simply need to check one part after another. If you spot a damaged component, start looking for ways to work on it.

You can opt to repair the component or replace it with a new one.

In case of a repair, you should consider hiring solar water heater technicians near you.

Regular inspection of a solar water heater will help you avoid some costly since you will be in a position to detect the problem early enough before it escalates.

  1. Check out for corrosion

As you continue using the solar heater, some parts can start corroding. Even the hardest metallic parts may not be spared by this scourge.

The steel part of the solar heater can be corroded by flowing water. The presence of mineral elements in the water can also accelerate the corrosion process. This is why it is advisable not to use hard water on some solar hot water heating systems.

Although most solar water heaters come with anode rods that protect the tank against corrosion, you should not ignore to do a manual inspection.

Inspect the anode rod regularly to ensure that it is in perfect condition. If not, consider replacing it.

Apart from replacement, it is also advisable to paint vulnerable parts of the solar water heater regularly so as to protect them from corrosion.

  1. Proper solar water heater panels installation

It always starts with the installation of the solar water heater. If installed correctly, your solar water heating system will perform to the optimum levels.

The reverse is true for the poorly installed solar water heating panels.

Ensure that the collector is properly aligned on the roof so as to improve the collector efficiency. The more efficient it is the better it will perform.

You should also ensure that the collector is not surrounded by different types of obstructions such as buildings and trees. This will ensure that it absorbs solar radiation throughout the day.

  1. Repair all the leaks

As long as there is water involved, you should be ready to deal with the leaks. These problems can be due to water pressure, faulty pipes, or even external pressure.

While inspecting your solar hot water system, take note of the leakages and act on them immediately.

If the cause is water pressure, lower it using the valves. You can also adjust the valves accordingly to prevent a buildup of excess pressure.

If you start doubting the integrity of the pipes, consider upgrading them. Buy newer pipes that are of better quality.

  1. Flush the storage tank to remove solid residue

As you continue using your solar water heater, chances are some mineral deposits and even solid residue will accumulate in the tank.

The situation will be worse if you are using hard water as it has high mineral content.

These solid materials have a negative impact on the operation of solar water heating systems.

One of the problems is the minerals can accumulate around the heat exchanger causing it to overheat.

They can also accelerate heat loss in the tank hence minimizing the efficiency of the solar water heater.

We cannot ignore the fact that the solid residue can cause water contamination.

The best way of dealing with this problem is by flushing the tank periodically.

Suneco also manufacture solar evacuated glass tube solar water heater, please contact us for more details.


Main Component Specifications
Materials & Specifications
Evacuated Tubes
Material: Borosilicate 3.3
Tube style: Twin wall all glass
Dimensions: ∅58mm outer tube; ∅47mm inner tube;  1.8m length, 1.65mm outer tube wall thickness
Solar Absorber Coating
Material: Graded AL/N on AL
Absorptance: >92% (AM1.5);
Emittance: <8% (80 C)
Vacuum: P<5×10-5 Pa;
Heat loss: <0.8W/(m2 C)
Heat Pipes
Material: High purity “oxygen free” copper (ASTM: C10200; DIN: OF-Cu)
Heat transfer fluid: distilled water + special metal powder
Maximum heat transfer capacity: 220W / 750Btu
Operating angle: 20-80 Degrees
Startup temperature: ~30 C / 86 F
Copper Header Pipe
Material: Copper (ASTM: C1100, DIN: ECu-58); Potable water rated.
Brazing rod material: BAg45CuZn          Maximum pressure: 800kPa
Connection options: 22mm OD copper
Heat Transfer Fins
Material:  High purity aluminum
Rubber Components
Material: HTV Silicone Rubber (UV stabilized)
Mounting Frame
Material: 6005-T5 Aluminum Alloy
Manifold Casing
Material: 3A21 Aluminum with Anodized or Powder Coated Finish
Manifold Insulation
Material: Glass Wool (K = 0.043W/mK)
Thickness: Average >50mm

Solar water heater panels product range.

Flat plate solar collectors are available in 10 to 30 tube sizes and have a number of options depending on the local market requirements.
Collector Lenghth2000mm2000mm2000mm2000mm
Collector Height1000mm1000mm1000mm1000mm
Collector Width80mm80mm80mm80mm
Tank Length1100mm2150mm1100mm2150mm
Collector Quantity1 PC2 PCS1 PC2 PCS
Peak Output *1706W / 5820 Btuh3412W / 11640 Btuh1706W / 5820 Btuh3412W / 11640 Btuh
Gross Area
2.00 m2
4.00 m22.00 m24.00 m2
System Capacity150 L300 L150 L300 L
System TypeNon-pressureNon-pressurePressurizedPressuirzed
*Calculated at midday (trans IAM = 1), G=1000W/m2, ∆T (tm-ta)=0, Location is in China
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