Solar Evac Tube Collector & Frame 20

Aquaheat Vacuum Tube Solar Water Heaters are a sustainable and efficient solution for heating water in your home. These systems harness the power of the sun to provide hot water for various domestic needs, reducing your reliance on traditional heating methods.

Specifications

• Models: V120
• Number of Tubes: 12
• Fluid Content(L): 1.7
• Pipe Material and Diameter: Copper, 15mm
• The Angle of Inclination: 15-75°
• Stagnation Temperature: 225°C
• Tube and Material: Copper tubes and selective absorber coating
• Heat Transfer Fluid: Water-glycol solution

Key Features

• Vacuum Tube Technology: The heart of the system, these tubes absorb solar energy efficiently, even on cloudy days.
• High-Quality Materials: Constructed with durable materials to ensure long-lasting performance.
• Energy Efficient: Significantly reduces energy consumption and lowers utility bills.
• Eco-Friendly: Reduces carbon footprint and promotes sustainable living.
• Easy Installation: Simple and straightforward installation process.
• Low Maintenance: Minimal maintenance required.

Materials

• Vacuum Tube: Borosilicate glass vacuum tube with selective coating
• Heat Pipe: Copper heat pipe for efficient heat transfer
• Frame: Aluminum alloy frame for durability

Factors to Consider When Choosing a Solar Water Heater

• Climate: The climate in your region will influence the size and type of solar water heater you need.
• Household Size: The number of people in your household will determine the required water heating capacity.
• Roof Orientation and Shading: The orientation and shading of your roof will affect the solar collector's efficiency.
• Local Regulations and Incentives: Check for any local regulations or incentives that may apply.

Frequently Asked Questions About Vacuum Tube Solar Water Heaters

What are vacuum tube solar collectors?

Vacuum tube solar collectors are a type of solar thermal collector that uses evacuated tubes to absorb solar energy and convert it into heat. They are highly efficient and can operate even in low-light conditions.

How do vacuum tube solar water heaters work?

• Vacuum tube solar collectors are made up of a single or multiple rows of parallel, transparent glass tubes supported on a frame. Each individual tube varies in diameter from between 1" (25mm) to 3" (75mm) and between 5′ (1500mm) to 8′ (2400mm) in length.
• Each tube consists of a thick glass outer tube and a thinner glass inner tube, (called a “twin-glass tube”) or a “thermos-flask tube” which is covered with a special coating that absorbs solar energy but inhibits heat loss.
• The tubes are made of borosilicate or soda lime glass, which is strong, resistant to high temperatures and has a high transmittance for solar irradiation.
• Inside the each glass tube, a flat or curved aluminium or copper fin is attached to a metal heat pipe running through the inner tube.
• The fin is covered with a selective coating that transfers heat to the fluid that is circulating through the pipe. 
• This sealed copper heat pipe transfers the solar heat via convection of its internal heat transfer fluid to a “hot bulb” that indirectly heats a copper manifold within the header tank.
• These copper pipes are all connected to a common manifold which is then connected to your geyser, thus heating the hot water during the day.
• The hot water can then be used at night or the next day due to the insulating properties of the tank.
• The insulation properties of the vacuum are so good that while the inner tube may be as high as 150°C, the outer tube is cooler to touch.
• This means that evacuated tube water heaters can perform well and can heat water to fairly high temperatures even in cold weather when flat plate collectors perform poorly due to heat loss.

How do vacuum tube solar collectors compare to flat plate collectors?

Vacuum tube collectors are generally more efficient than flat plate collectors, especially in colder climates. They can also operate at higher temperatures, making them suitable for various applications, including space heating.

How often do vacuum tube solar collectors need maintenance?

Vacuum tube solar collectors require minimal maintenance. Regular inspections and cleaning of the tubes can help ensure optimal performance.

Can I install a vacuum tube solar collector myself?

While it's possible to install a solar water heater yourself, it's recommended to hire a qualified professional to ensure proper installation and optimal performance.

What is the impact of shading on vacuum tube solar collectors?

Shading can reduce the efficiency of solar collectors. It's important to install the collectors in a location that receives maximum sunlight exposure.

Can I combine solar water heating with traditional heating systems?

Yes, you can combine a solar water heater with a traditional heating system, such as a gas or electric boiler. This can provide a backup heating source during periods of low solar radiation.