evacuated tube solar collector
 Name: |
Solar Collector |
 Volume: |
100l-500L |
 Material: |
Aluminium |
 Insulation |
Polyurethane |
- FAQ of Solar Collector
- Solar Collector
- Specifications
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FAQ – Glass Tube Solar Collector
1. What is a glass tube solar collector?
A glass tube solar collector is a key component of a solar water heater system that uses vacuum glass tubes to absorb sunlight and convert it into heat. It is widely used in non-pressure and pressurized solar systems due to its high efficiency and reliable performance.
2. How does a glass tube solar collector work?
The collector consists of multiple vacuum tubes that capture solar radiation. The inner coating of the tube absorbs heat and transfers it to the water or heat transfer medium. The vacuum layer between the tubes reduces heat loss, allowing the system to maintain high efficiency even in cooler conditions.
3. What materials are used in glass tube collectors?
Most glass tube collectors use borosilicate glass (3.3), which is highly resistant to thermal shock and environmental damage. The absorber coating is typically made of AL/N on AL, ensuring strong heat absorption and low heat emission.
4. What are the advantages of glass tube solar collectors?
Key advantages include:
High thermal efficiency
Low heat loss due to vacuum insulation
Good performance in cold or cloudy weather
Long lifespan and durability
Cost-effective compared to flat plate collectors
These benefits make them popular among manufacturers, suppliers, factories, and exporters.
5. What is the typical price of glass tube solar collectors?
The price varies depending on tube size, coating quality, and order quantity:
Single vacuum tube: $1.5–$5 per piece
Complete collector set: depends on system size and configuration
Most suppliers provide a free quotation, and bulk orders can achieve the best price.
6. What sizes are available for glass tubes?
The most common sizes are:
∅47mm, ∅58mm, and ∅70mm diameter
Lengths of 1.5m, 1.8m, or 2.1m
These standard sizes are widely used by factories for global export markets.
7. How long do glass tube solar collectors last?
High-quality glass tube collectors can last 10–15 years. The vacuum tubes themselves may need replacement after several years depending on usage, water quality, and environmental conditions.
8. Are glass tube collectors suitable for cold climates?
Yes, they perform better than many other systems in cold climates because the vacuum insulation reduces heat loss. However, in freezing conditions, proper system design or antifreeze measures are necessary.
9. Can I customize glass tube solar collectors?
Yes, most manufacturers and suppliers offer customization options, including tube size, coating type, packaging, and branding (OEM/ODM). This is useful for wholesalers and distributors building their own brands.
10. What factors affect the quotation and price?
The main factors include tube material quality, coating efficiency, size, quantity, packaging, and shipping terms. Working directly with factories and ordering in bulk can help secure a better quotation and lower price.
11. What are the main export markets?
Glass tube solar collectors are widely exported to Africa, the Middle East, Southeast Asia, and South America, where solar energy demand is growing rapidly.
12. Why is this a good product for foreign trade?
It has strong global demand, competitive pricing from China manufacturers, easy transportation, and stable quality. It is an ideal product for importers, wholesalers, and solar energy project suppliers.
When looking for solar water heater in China, ways of maximizing your solar water heater, you should consider its lifespan.
The life of the heater has an impact on its performance. Maybe you may be trying to get the best out a heater that has outlived itself.
It is estimated that most solar hot water systems can last for up to 20 years. Beyond those years, the system may start performing below the required levels.
However, this lifespan is not fixed and does not apply to all solar water heaters in the market. Some have longer or shorter lifespans than others.
There is quite a number of variables that can cause between the lifespan of one solar heater and another.
One of the factors is solar water heater maintenance. How you take care of your solar-powered heating unit will have a direct impact on how long it will last.
Solar heaters that are properly maintained tend to last for more years than those that are not maintained well.
In addition to the maintenance factor, the quality of the solar water heater. The best solar water heating panels are expected to last for long.
On the other hand, low-quality heaters will not serve you for many years.
So, you should strive to get your heating unit from reliable solar water heater manufacturers. This is the surest way of getting quality and durable solar water heater in China.
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.
Read more
http://blog.plexus-energy.co.ke/solar-water-heater-maintenance-tips/
-The cost of solar heater
There is a difference in the cost of these two solar hot water systems. Generally, evacuated tube solar collectors are expensive than the flat plate panels.
The cost of evacuated tube solar collectors can be more than 20% to 40% than the cost of the flat plate solar car collector.
This is highly expected given the efficiency of the vacuum tube systems. The secret in this lies in finding the right solar water heater manufacturers.
– Which is a better in performance
Evacuated tubes are better performers in cold and cloudy conditions than the flat plate collectors. This is because they absorb the maximum radiation while at the same are capable of preventing any loss of heat.
Even during hot days, evacuated tubes are still capable of outdoing the flat plate collectors.
-Which one is easy to install? Evacuated vs flat plate
Vacuum tube solar collector are generally less sensitive to the direction of the sun. They can absorb maximum radiation regardless of the position of the sunlight.
On the other hand, flat plate collectors are very sensitive to the position of the sun. They need to be installed at the right position where they can tap maximum sun rays.
In this comparison, it is clear that evacuated tubes are easier to install than the flat plate.
| Model | ECO-V-15 | ECO-V-20 | ECOV-30 | ECO-H-40 | ECO-H-50 |
| Lenghth | 2030mm | 3850mm | |||
| Width | 1175mm | 1550mm | 2330mm | 1550mm | 1950mm |
| Collector Type | Vertical | Vertical | Vertical | Horizontal | Horizontal |
| Peak Output * | 1019W | 1339W | 2021W | 2678W | 3342W |
| Aperture Area |
1.41 m2
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1.88 m2 | 2.82 m2 | 3.76 m2 | 4.70 m2 |
| Gross Area | 2.40 m2 | 3.17 m2 | 4.80 m2 | 6.34 m2 | 7.86 m2 |
We also manufacture compact solar water heaters. Please contact us for details.
| 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
