Solar Water Heater
 Name: |
Solar Water Heater |
 Volume: |
100l-500L |
 Material: |
STAINLESS STEEL |
 Insulation |
Polyurethane |
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FAQ – Solar Water Heater (Vacuum Tube Type, Non-Pressure)
1. What is a non-pressure vacuum tube solar water heater?
A non-pressure vacuum tube solar water heater is a system that uses glass vacuum tubes to heat water using solar energy, without relying on high water pressure. It works with gravity-fed water, usually from a rooftop tank, making it simple, affordable, and widely used in residential applications.
2. How does a vacuum tube solar water heater work?
The vacuum tubes absorb sunlight and convert it into heat. Water inside the tubes gets heated and naturally rises into the storage tank, while cooler water flows down to be heated again. This natural circulation process is called the thermosiphon principle, and it requires no pump or electricity.
3. What are the advantages of a non-pressure system?
Non-pressure systems offer several benefits:
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Lower price compared to pressurized systems
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Simple structure with minimal maintenance
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Easy installation
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High efficiency in sunny climates
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Ideal for rural and developing markets
These advantages make it a popular choice among manufacturers, suppliers, factories, and exporters.
4. What is the typical price range?
The price depends on capacity, materials, and configuration:
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100L system: around $80–$150
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150L–200L system: around $100–$300
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250L–300L system: around $150–$400
Most suppliers provide a free quotation, and bulk orders usually get the best price.
5. What materials are used in vacuum tubes?
Vacuum tubes are typically made from borosilicate glass, which is strong, heat-resistant, and durable. The inner coating improves heat absorption, while the vacuum layer reduces heat loss.
6. How long does the system last?
A high-quality system from reliable manufacturers can last 10–15 years. The vacuum tubes may need replacement after several years depending on usage and environmental conditions.
7. Is it suitable for all climates?
Non-pressure solar water heaters perform best in warm and sunny regions such as Africa, Southeast Asia, and the Middle East. In colder climates, additional protection or alternative systems may be required.
8. Can I customize the product for my market?
Yes, most manufacturers and factories offer OEM/ODM services, including custom tank size, tube quantity, material selection, and logo printing. This is ideal for wholesalers and brand owners.
9. What are the installation requirements?
The system should be installed on a rooftop or elevated position with good sunlight exposure. It also requires a gravity-fed water source, such as a water tank placed above the heater.
10. How do I get the best quotation from suppliers?
To get the best quotation, provide detailed requirements such as capacity, quantity, material preferences, and destination port. Comparing multiple suppliers and negotiating bulk orders helps secure the best price.
11. What are the main export markets?
This product is widely exported to Africa, South America, Southeast Asia, and the Middle East, where demand for low-cost and energy-saving solutions is high.
12. Why is this product good for foreign trade?
It has stable demand, competitive pricing from China factories, easy logistics, and strong profit margins for distributors. It is a reliable product for long-term cooperation with global buyers.
Tips for improving solar water heater performance
Would you like your solar water heater to deliver the best performance? Consider deploying the following tips.
- 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.
2. Check the conditions for the solar water heater 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.
3. 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.
4. Proper solar water heater 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.
https://www.youtube.com/watch?v=IJSnoa67CaY
5. 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.
6. 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.
Conclusion
It is always possible to get the best from your solar water heater, especially after you have discovered a decline in performance.
Even after buying the best solar water heater in China, do not neglect it. Give it the proper care and it will deliver the best results.
For the technical tips, consider hiring solar water heater experts.
In short, solar water heater lowers carbon footprint.
we cannot underrate the effectiveness of most solar water heating systems. For instance, a vacuum tube solar water heater operates at 80% efficiency.
| Component |
Materials & Specifications
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Evacuated Tubes
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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
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Solar Absorber Coating
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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)
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Manifold
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Outer Shell: Color Painted steel (standard) or Stainless Steel (optional) , 0.5mm thickness
Inner Shell: Stainless Steel 304-2B (standard) or 316L (optional) , 0.5mm thickness
Insulation Layer: Extreme High density Polyurethane Foam from Europe
Operating angle: 15-80 Degrees
Startup temperature: 0 C Degrees
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Rubber Components
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Material: HTV Silicone Rubber (UV stabilized)
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Mounting Frame
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Material: Zinc-Coated Galvanized Steel (standard) or Aluminum ally (optional) or Stainless Steel (optional)
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Full Installation Support
