Is there such thing as a solar powered fan?

Fan powered by solar energy

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A portable solar fan with externally mounted solar panels

A solar fan is a mechanical fan powered by solar panels. The solar panels are either mounted on the device or are installed independently. Solar fans mostly do not require secondary power sources other than solar power, as most of them are used for cooling purposes during day time. Some types are also used for heating purposes. It runs the fastest when it is the hottest outside providing savings on air conditioning costs.[1]

Attic fans

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An attic fan

Attic heat is caused by the sun baking down on the roof surface. This sunlight causes the roofing material to heat up, thus transferring the heat into the attic via thermal transfer. The buildup of heat is generally dissipated by normal convection, i.e.: as the air is heated it expands and rises, flowing out of the attic through vents placed at or near the peak, while fresh air is pulled into the attic from intake vents that are generally in the eave (soffit) area. However, most roof vents are inadequate at expelling the heat and require the use of a powered vent fan to remove heat effectively. A solar powered attic fan is an effective way to remove attic heat using only the power of the sun to run the fan.

Roof mounted

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Weatherproof cap on a roof-mounted fan

A roof-mounted solar attic fan can be effective in removing excessive heat from the attic. When mounted near the peak the solar fan forces hot air out while pulling fresh air in via eave/soffit vents. This exchange of air keeps the attic space from overheating.[2] Solar attic fans not only lower the cooling costs in your home, they also extend the life of your shingle roof.

Gable mounted

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It is similar to the roof mounted solar fan, except that its installation is a little different. Most attic fans are installed on the roof surface, whereas gable fans are installed in the gables, inside the attic and behind an existing louvered gable vent as the name suggests. They are mostly installed in places like greenhouse, cabin, RV's garages or barns and other storage places where heat and moisture are usually present. These types of fans are generally installed behind intake grills to provide ventilation. Gable Solar Fans are usually installed high on the gable close to the ridge and are also coupled with soffit or roof vents for well-balanced intake and exhaust air avenues. The airflow depends upon the level of sunlight when there is more sunlight, the airflow will be more resulting in enhanced cooling. It is also capable of lowering the air conditioning costs by cooling the attic.

Since the only source of energy is from the solar panel for a solar fan. It is important to have a larger solar panel to get the better performance from the solar fan. Amtrak Solar makes one of the most powerful solar fans in United States of America.

In 2007, solar fans were installed on the terminal roofs of Honolulu International Airport, in addition to the mansion of Indiana governor. In 2009 the Indiana State Senate passed a bill giving a tax deduction to homeowners with solar fans.[1]

Advantages

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You will get efficient and thoughtful service from BEBEST.

• A solar fan is more environmentally friendly than a regular electrically powered one, and produces fewer carbon emissions.
• Though initially the installation may be costlier, in the long term it would turn out to be cheaper because it does not use power from the utility grid and may provide savings up to 30 percent on air conditioning costs.[1]
• Risk of electric accidents are eliminated as there are no electric cords attached to the solar fan.
• A cordless appliance offers much more mobility compared to conventional fans.[3]

See also

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References

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Solar Powered Waterproof Fan Kit for Chicken Coops, Small Greenhouses, Doghouses, Sheds, and Other Enclosures

840556071495

SPECIFICATION SHEET

This will work as a great option for a solar-powered fan for a small greenhouse, shed, doghouse, or chicken coop. Please note that this is not a very powerful solar panel and needs direct sunlight to operate. We have a stronger option available here.

The panel is IP55 (outdoor environment) rated and the fan is IP67 (submersible in water), but the connectors are not. Please protect connectors with tape or other sealants if exposed to elements. Manufacturer rated 3 watts of power. Must have sunlight for power as there is no battery for energy storage while the panel is shaded.

Includes:

 

Specs (measured in direct sunlight)

• Airflow: 77 CFM
• Fan Speed: 2000 RPM
• Noise: 32 DBA
• Energy Draw: 12v/0.24A (fan is run at ~75% of rated speed)
• MTBF: 67,000 hrs
• Temp Range: -40 C (-40 F) to +70 C (+158 F)
• Cable Length: 30" lead from fan and 30" lead from solar panel

Exterior Bracket Dimensions: 6.25" x 6.25" x 1.38"

Cutout Dimensions: 5" x 5"

Optional: Add on our battery overcharge protector and this adapter cable to be able to use a standard 12vDC battery inline between your solar panel and fan kit.

If you are looking for more details, kindly visit China rechargeable electric fan with solar panel manufacturer.