Solar Powered Fans Articles

Solar Power Fans for Attics New Orleans

Author: Ecostar

Solar powered fans have become a popular solution for taking care of hot areas in the house without having to mess with wiring. Solar Powered Fans are the supreme solar product. They work best when they're needed the most. Since a solar powered fan's motor is powered by the sun, it runs at faster as intensity of sun increases cooling down when it is needed the most.

 

Attic fan provides ventilation and helps to reduce the tremendous amount of heat that builds up as the sun sizzles. If attic is not properly ventilated then vapors and moisture are accumulates in attic leading to growth of bacteria, mold, rust, and rot. Solar power attic fans offer an environmental friendly and cost efficient solution to summer time cooling problems they also to save lots of money by cooling down your attic without the need to turn your air conditioner.

 

There are major benefits of solar powered Fans for Attics for residents of New Orleans and adjoining areas:

 

  • Solar attic fans are very easy to install.
  • There is no need of wiring as these fans draw power from solar panels.
  • Help in reducing cooling load on air-conditioning system.
  • These operate on solar energy, so they do not add to power bills.
  • Solar powered attic fans are available for to all type of roofs.
  • Solar panel is adjustable so they can be adjusted according to position of sun.

 

Solar power attic fans in New Orleans keeps the attic ventilated, thus increasing the life of roofing materials by avoiding the growth of harmful organisms which rots out the part of house. It keeps off the sun's heat and the rains patter. Solar powered fans are environment friendly they use energy from renewable source of energy and helps in conserving non-renewable source of energy.

 

Compared to powered vent fans, there is no need for electrical wiring, as solar ventilator uses no electricity. Initially the cost of equipment is greater for solar powered attic fans than conventional powered fans but it saves on cost to bring electrical wiring to the attic to supply a conventional ventilator and subsequent saving on energy bills. Keeping the attic ventilated helps to increase the life of roofing materials since it avoids rotting It is worthy option to consider using solar powered attic fan to bring down energy consumption and increase life of roofing material.

Article Source: http://www.articlesbase.com/construction-articles/solar-power-fans-for-attics-new-orleans-2841319.html

About the Author

Star Spray Foam Insulation is locally owned and operated by Brad Harris. Our Office is located in New Orleans and operates in the Gulf South region to include Biloxi to Venice. Baton Rouge to Houma. Brad Harris has been a residential builder since 1996 and has a complete understanding of Residential and Commercial business and considers the most efficient and effective means of accomplishing the job under any circumstances.

Explanation On How To Set Up Solar Powered Fan

Author: lisa lucero

Nowadays the solar powered fan is growing popularity since it can be used to reduce the temperature inside a house. It can lower the temperature in the attic and might even lower the temperature of a home. The temperature in the attic can be reduced up to 10 degree Celsius.

It is very important to have solar powered fan since it is very beneficial and can surely help to reduce the temperature inside a building especially a home. The temperature of attic can reach 71 degree Celsius and the way to lower the temperature is by installing solar powered fan.

Of course the temperature that can be reduced depends on the size of fan. If you install more than one fan the temperature can be decreased even more. By installing the fan, the interior temperature of your house can be reduced. As we know, the heat is trapped in the house because the attic reaches temperature up to 71 degree Celsius.

By reducing the temperature using fan, home cooling systems and air conditioners can work efficiently. You will be able to reduce costs since the temperature inside your house is lower. Air conditioners and home cooling systems use most of the electricity power. By lowering the temperature, we can reduce the need of energy. The climate of your home will be a lot more comfortable.

The solar powered attic fan is the most cost effective and most preferred fan to be used in lowering the heat inside a building. You need to install this in your roof and face the solar panel directly to the sun. It is a great investment for your house and you will not regret if you buy a solar powered attic fan. If it is possible, you can install two or more fans to make your home even cooler. You will be able to save more energy by having two or more solar powered attic fans.

The only hardness in installing solar powered fan is the fact that you have to climb the roof and install it by your self. You can also ask someone to help you since you cannot handle the solar powered attic fan while you are making a hole in the roof. That is why you will need someone to help you in installing the fan. Do not worry in installing the fan because it is very quick and easy.

You might get a remote thermostat when you buy a solar powered attic fan. Well, not all of the fans come with remote thermostat. If you get a remote thermostat you might have to mount it in the attic.

Remember that you have to install the fan in the proper location. Do not install the fan near the trees because the leaves can get clogged in the fan. The tress might also shade the area where you install the fan. That will make the fan stop working.

Article Source: http://www.articlesbase.com/tools-and-equipment-articles/explanation-on-how-to-set-up-solar-powered-fan-4201868.html

About the Author
It is very important to install solar powered fan in your house. If it is possible, get solar powered air conditioner to be installed in your house.

Benefits of Solar Energy and Its Solar Power Accessories

Author: Lynn Porter

The purchase of solar power accessories assumes that the buyer is planning to install a solar energy setup in his home. The other scenario is that the purchaser already has the said setup but requires replacement of the solar accessories being bought. These accessories for solar energy systems include inverters, collectors, charges, batteries, generators, and mounts.

No matter the accessories being considered for purchase, the main aim is always to enjoy the advantages of solar energy harnessed for use in the home. There are disadvantages to solar energy, as can be expected from any power source, but these are often just minor inconveniences that occur during the initial phases of the setup. So, when you are buying the solar power accessories, you have the assurance that whatever costs incurred will be recouped in no time at all.

Benefits of Solar Energy

Let's start with the good news that comes with solar energy. First, you can enjoy financial savings of an effective and efficient power generator with its ultimate source being absolutely free. We are talking about the sun, naturally, which is available in most parts of the earth.

Once the initial investment for the solar power accessories and other major components has been recouped, the electrical energy generated by the setup can now be enjoyed for free! You will not be subjected to the rise - and rise, judging from the current trend - of electricity costs from the main grid. And you don't even have to wait for long in order to recoup your initial investment either although the payback period will depend on the amount of electricity used in the household.

You don't even have to worry about the initial investment for solar accessories and components. The federal, state and local governments in the United States offer renewable energy incentives like discounts upon purchase, tax rebates and even financial assistance to homeowners at low interest rates. In the end, you might spend just 50% of the total cost for the solar power accessories and parts of the entire system.

Furthermore, you can avail of the system known as net metering. If your solar energy system is producing more than the household can use, the utility company can buy the excess and give credit on your account.

Once the solar energy system is up and running, you will not worry about maintenance costs, too. Just wipe the solar panels, regularly check on the parts and then replace the solar accessories as necessary. Since there are no moving parts, you will not be buying replacements one too many times more than you will like.

Let's not forget that solar energy is also eco-friendly. No air pollution, no noise pollution, no water and land pollution, and no fossil fuel mined. This is the most renewable form of energy known to man.

Disadvantages of Solar Energy

There are demerits to solar energy but these are minor blips. In fact, many of the disadvantages can be counteracted by measures. For example, if the sun does not shine as brightly as desired, the addition of certain components to the system increases efficiency. Or solar energy cannot be produced at night but batteries are available to store it for later use.

In the end, the most important thing when it comes to solar energy and, consequently, the use of solar power accessories is in how well these are harnessed and used to gain optimal efficiency.

Article Source: http://www.articlesbase.com/technology-articles/benefits-of-solar-energy-and-its-solar-power-accessories-5002778.html

About the Author

With SolarPowerFront.com's one–stop shopping and superior quality solar power accessories, you are sure to find exactly what you are looking for. 

Solar-power battery air freshener with oscillating fan

Author: Angela

A solar-power battery air freshener includes a housing with an oscillating fan for emitting a fragrance to the surrounding environment. A solar-power battery utilizes energy derived from natural sunlight or light emitted from a regular light fixture in order to provide power to an oscillating device wherein a fan is connected.

The oscillating device includes a circuit, a coil, and magnets  connected to vertical iron plates. A bracket is attached to the iron plate in such a manner that a fan  can be attached to the bracket. A fragrance container is located directly below the fan. The oscillating movement of the fan disperses the fragrance emitted from the fragrance container out of the housing through air vents and into the room or vehicle being freshened.

A solar-power air freshener device comprising a front cover and a back cover, said front cover including a front wall, a top wall, a pair of opposing side walls, and a bottom wall, said back cover including a back wall, a top wall, a pair of opposing side walls, and a bottom wall, wherein the front cover and back cover are attached to form a housing, said bottom wall having a hole provided therein, said side walls and said front cover having air vents permitting air flow, a fragrance container containing scented materials inserted and held on said bottom wall through said hole, a solar battery mounted on said top wall, and a pendulum driving device secured on said back wall, said pendulum driving device including a driving coil, wherein the energy from the solar battery energizes the pendulum driving coil, said driving coil being held between pivotally attached metal plates on a pendulum housing, each of the metal plates having a magnet attached thereon, and one of the metal plates having a pendulum extending downwardly thereon and a fan blade attached on said pendulum.

It can be appreciated that air freshener have been in use for years. Typically, air freshener are comprised of U.S. Pat. No. 5,342,584, an air freshener device and cartridge with battery as means of power. U.S. Pat. No. 3,711,023, an air freshener device utilizing an air conditioning system which releases the evaporated volatile substance into the air to produce an odor. U.S. Pat. No. 3,990,848, an air flow induction device air freshening apparatus with a fan mounted in the housing. A fan driven by a motor is connected with the battery. U.S. Pat. No. 4,647,428, a room air freshening device that uses light bulb for vaporization of liquid. It works when the light bulb is turned on to heat and vaporize fragrance to permeate the room. U.S. Pat. No. 4,808,347, an air freshening apparatus which is plugged into a standard cigarette lighter socket of vehicles, utilizing an electric motor within the housing with a peopeller fastened to its shaft.

The main problem with conventional air freshener are that, as in U.S. Pat. Nos. 5,342,584 and 3,990,848, the devices need the usage of batteries. The utilization of batteries to power the devices need more attention to the operation of the devices, need the constant change of batteries, add more cost to the device because of the cost of batteries. Another problem with conventional air freshener are that, as in U.S. Pat. No. 3,711,023, the device uses the air conditioning system to release the evaporated volatile substance into the air to produce an odor. The utilization of the air conditioning system makes the device depended on the time the air conditioning system is working. Another problem with conventional air freshener are that, as in U.S. Pat. No. 4,647,428, the room freshener device utilizes a light bulb that is plugged to the electrical system. The light bulb has to be turned on and at the same time consume electricity to function. Another problem with existing products is that, as in U.S. Pat. No. 4,808,347, the air freshening device is plugged into a standard device as in this case the cigarette lighter socket in a vehicle. Another problem with existing products is that, as in U.S. Pat. No. 4,808,347, the air freshening device is plugged into a standard cigarette lighter socket in a vehicle. Again, the device is dependent on another device as in this case the cigarette lighter, which on occasion may not be functioning.

While these devices may be suitable for the particular purpose to which they address, they are not as suitable for providing a device with solar-power battery utilizing the energy derived from natural sunlight or light emitted from regular room light fixture. The solar-power battery is operationaly connected to an oscillating device wherein a fan is connected. The oscillating or to and fro movement of the fan moves fragrance emitted from the volatile substance of the fragrance out of the housing to the room or vehicle being freshened.

The main problem with conventional air freshener are that, as in U.S. Pat. Nos. 5,342,584 and 3,990,848, the devices need the usage of batteries. The utilization of batteries to power the devices need more attention to the operation of the devices, need the constant change of batteries, add more cost to the device because of the cost of batteries. Another problem is that, as in U.S. Pat. No. 3,711,023, the device uses the air conditioning system to release the evaporated volatile substance into the air to produce an odor. The utilization of the air conditioning system makes the device depended on the time the air conditioning system is working.

Also, another problem is that, as in U.S. Pat. No. 4,647,428, the room freshener device utilizes a light bulb that is plugged to the electrical system. The light bulb has to be turned on and at the same time consume electricity to function. Another problem with existing products is that, as in U.S. Pat. No. 4,808,347, the air freshening device is plugged into a standard device as in this case the cigarette lighter socket in a vehicle. Another problem with existing products is that, as in U.S. Pat. No. 4,808,347, the air freshening device is plugged into a standard cigarette lighter socket in a vehicle. Again, the device is dependent on another device as in this case the cigarette lighter, which on occasion may not be functioning.

In these respects, the solar-power battery air freshener with oscillating fan according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in so doing provides an apparatus primarily developed for the purpose of providing a device with solar-power battery utilizing the energy derived from natural sunlight or light emitted from regular room light fixture. The solar-power battery is operationaly connected to an oscillating device wherein a fan is connected. The oscillating or to and fro movement of the fan moves fragrance emitted from the volatile substance of the fragrance out of the housing to the room or vehicle being freshened.

Article Source: http://www.articlesbase.com/internet-marketing-articles/solar-power-battery-air-freshener-with-oscillating-fan-2901463.html

About the Author

Ningbo BST products company is a privately-owned manufacturer specialized in hand sanitizers,air freshner,electic perfumes,pet spray,pet shampoo and some other daily use chemicals.

Solar Powered Battery Charger: A Nifty Contraption For Everyday And Sudden Use

Author: Garret Edwards

We all know that energy cost is increasing lately and it will perhaps go up in the near future. When doing work with power concerns, money is really a huge matter which is exactly why you should start opening your mind on the concept of photovoltaic driven devices.

These devices also comes in the shape of solar powered generator, solar powered attic fans, solar powered lights and even solar powered christmas lights! But enough of that we're actually here to talk concerning the solar powered battery charger.This charger is great for charging your wireless phone or for powering your Ipod at the shore or while on the go.

We all understand or know that running out of battery life is defintely a incredibly aggravating encounter, particularly when you are inside midst of some thing vital. You simply have every thing you require in the palm of your hands yet you are a not able to take advantage of it. This is exactly where the solar powered battery charger makes a difference.

So, what is the main difference amongst solar batteries from the batteries that we're really using currently? Well, rechargable batteries are in fact built out of cadmium or hydrogen, metal, and an electrolyte. The response among the electrolyte along with the battery's cell releases electrons that charge your gadget's circuit.

These batteries release considerably quicker than alkalines and lithiums but their capacity to recharge gives them their worth. The only disadvantage to it is that you should charge it and that usually requires an outlet. A solar powered battery charger comes in a variety of sizes and they're economical to purchase. They are used in the majority of electronics and are great for mobile phones, laptop computers, Cd players and much a lot more.

A photovoltaic charger's design also relies on the power source being utilized. For instance, a charger may well be designed to utilize AC electrical power from a mounted electric outlet of a electrical power grid or DC electrical power from a voltage generator like a photovoltaic panel.So, you can charge from a panel or from the wall socket (with suggested wall charger equipment. You can also leave the system out within the rain, because it is water resistant.

 

Just how Does a Solar Powered Battery Charger Operates

This device operates by connecting the end of your blocking diode on the positive lead from the battery holder. One side of your diode is labeled together with a circular tool. Hook up the end with the positive line to red lead of this AA battery pack holder and then the negative side on the black lead. Place the hindering diode on the negative lead  battery and by merely linking the cord to the accumulator item to charge up any time the solar panel is presented to sun light. Use the accumulator's USB end result to charge the battery power of your ipod, mobile phone, or other portable devices.

Solar power has been mentioned among fanatical energy conservatism. Photovoltaic electricity can develop into the most considerable and cost-free source of electricity available. Portable sun power gadgets are wonderful to have in emergencies. You are able to also use it to save funds on charging your small electronic tools.

Portable movie recorders open up whole new opportunities for watching Television programs and shows on then go. You can transfer videos instantly to your player, without needing to firstly capture and alter them on a personal computer. Considering that these kinds of photovoltaic powered gadgets are presently available today, certainly opens a great deal of options to a enviromentally friendly and a much better future.

Article Source: http://www.articlesbase.com/electronics-articles/solar-powered-battery-charger-a-nifty-contraption-for-everyday-and-sudden-use-3606143.html

About the Author

Garret Edwards has conducted extensive investigation in the subject of solar powered battery charger for a very long time and handles a site regarding solar powered generators where you can obtain solutions to the rest of your queries.

House Attic Fans: Health Benefits for the Entire Family

Author: Joseph Mark

House attic fans, in conjunction with open windows, efficiently propel hot air and its pollutants (smoke, humidity, odors) to the attic of a home. This eliminates the build-up of heat by dispelling the air with a cooling fan and providing home occupants with healthy, clean and fresh air for breathing. But, aside from cooling your home, why are house attic fans so important?

House Attic Fans: For You and Your Family's Health

The quality of air within a home is often referred to as indoor air quality, or IAQ. IAQ in homes without a cooling fan is often poor, leaving occupants hot and sticky or worse; with health complaints. Among the most common pollutants in homes not fitted with house attic fans is mold, whose growth is associated with moisture (condensation) and can accumulate in homes without house attic fans. Mold can be an allergen, with a 1999 study by Mayo Clinic having connected the sinus infections of 37 million Americans with mold.

Moisture in homes without house attic fans or a cooling fan can also lead to mildew, a type of mold that we most commonly associate with dirty-looking bathrooms and laundry areas. Left untreated, it can cause structural damage and a devaluation of your property! It's not just unsightly mildew that is responsible for the release of allergenic spores into the air. While these are rarely toxic to humans, they can be the source of you and your family's allergies and can even trigger asthmatic attacks! Poor ventilation in homes with no house attic fans can also result in the lingering of nasty smells such as cigarette smoke and old cooking fumes.

The Importance of Ventilation

Ventilation through the use of a cooling fan like house attic fans is the most effective way to filter and dilute contaminants in the air in order to improve the air in your home . The US Environmental Protection Agency (EPA) attributes indoor air pollution to the loss of US$1 billion in direct health care costs and up to US$60 billion through loss in productivity annually while also maintaining that 50 percent of all illnesses are caused or perpetuated by poor IAQ, which is most present in homes without house attic fans. Not just the EPA is taking the importance of ventilation seriously; Doctors acknowledge that poor IAQ can be a threat to one's health.

How to Achieve Effective Ventilation

Effective ventilation in your home involves circulating and replacing hot, moist air with fresh, cool air from outside. House attic fans ventilate the entire home by expelling hot, stale and poor quality air out from vents that are installed in your roof. Cool, fresh and clean air is then drawn in through open windows, with the home's air constantly circulating. The introduction of house attic fans can see room temperature drop by up to 20°F, reducing the need for air-conditioning and its associated cost by up to 90 percent!

House Attic Fans: A Final Note

The best way to keep cool air circulating through your home is through the use of a cooling fan . The use of such house attic fans will not only bring the room temperature within your home down, but you will also save on electric bills accumulated through the use of air-conditioning. Furthermore, and perhaps most importantly, house attic fans can ensure that you and your family don't suffer from any of the nasty health complaints associated with poor IAQ!

Article Source: http://www.articlesbase.com/tools-and-equipment-articles/house-attic-fans-health-benefits-for-the-entire-family-4917665.html

About the Author

Joseph Mark is a house ventilation expert who provides various insights on the multifold utilities of Whole House fan as cooling fan and the benefits of installing house attic fans.

Solar Power Energy - The Best Source Of Energy In Our Planet Today

Author: shane green

Solar power energy cuts down the energy bills, and also benefits the ecosystem. Eco-friendly energy is the demand of this hour, if we have to help save our Planet from the hazardous effects of emissions. Some others have estimated the cost of solar power can be on par along with conventional utility energy by 2015, making solar energy as affordable as your typical electricity bill. And it is only likely to get much better.

Solar energy systems offer a clean, environment friendly and domestic energy source. Solar energy could also be utilized to fulfill our electricity necessities. This electrical energy can either be used as it is or can be saved in the battery.

Electricity is a form of power accurately like heat as well as light. Normally occurring electric powered sources, however, are generally hard to find, and many only generate a small amount of electric power. Systems capable of running almost everything in your residence could cost more than $10,000!

There are, nevertheless, a few useful resources obtainable that could assist you do it on your own for under $300. Systems can be hooked up at distant regions, which makes it sensible for use anyplace. If you set up a Power system, you won't be dependent on centralised resources.

Normally, solar powered merchandise are simple to put up and/or utilize. Examples of solar powered merchandise include solar panels, hot water heater systems, lighting, fountains, as well as pumps. Solar energy is also utilized or used to heat our water. Water heating is commonly the second leading home energy cost, costing the regular family over $400, annualy.

Solar energy positive aspects drawbacks are usually the number one factor to weigh whenever considering setting a new system. Though the advantages and drawbacks of solar power can be different for different individuals and different applications or perhaps places, some of them is the same.

Solar energy advantages and disadvantages usually are influenced primarily by normal incidences, similar to conventional power resources.These pros and cons provide an excellent starting point for those considering a solar power project for their house or business building.

Solar energy advantages are an easy way to reduce fuel expenses. Make way for the recently discovered approach to minimize the price of electrical usage, to save power as well as to save the resources.

As the majority of our planet's natural assets continue to diminish there is one that has remained constant and abundant. Sunlight is an endless source that could be used so that you can heat swimming pools, power cars, calculators, fans, cooking devices and light your own home either inside and out.

Solar power energy is free of pollution and essentially noise free. Solar power energy has terrific potential to become the primary source of power with the ongoing exploration and development our dependence on other traditional energy power varieties could decrease by 50 % in as little as thirty years.



Article Source: http://www.articlesbase.com/remodeling-articles/solar-power-energy-the-best-source-of-energy-in-our-planet-today-3639100.html

About the Author

Shane Green had been involved in a number of credible and extensive researches about alternative energy source. Over the time, he realized how convenient and beneficial Solar Power Energy is. Read and learn more from his articles found at his site about Solar energy.

Solar Powered Airplanes

Author: Bryce Stone

The use of solar power is something that is currently under much further investigation. It seems that everyone is trying to find a better way to go green and use less fossil fuel. This is obviously a great idea. However, there are many aspects that still need to be considered. Solar powered cars have successfully been produced but is it possible to produce solar powered airplanes? There are currently many solar powered machines in use but there are none widely available to the general public. Solar power sounds like a great idea but like anything it will have its downfalls. Perhaps the use of solar power will grow in time as science learns more about how to utilize this valuable resource. 

There is currently a solar powered airplane that has been successfully produced. It is called the Solar Impulse and it is currently a prototype. This airplane is worth $94,000,000 and it weighs 3300 pounds. It is made up primarily of carbon fiber but it is still very small. There is only enough room for one person which is the pilot. Though it is fascinating to have developed a solar powered airplane, there is clearly much more work to be done. The airplane is outfitted with many solar cells that are designed to draw energy from the sun. There are also batteries that store up power so that the airplane can be flown at night. As great as this plane is, currently it can only fly for seven or eight hours at a time. 

There are many advantages and disadvantages to using solar powered airplanes. At this time oil is still cheaper to purchase than the costs of creating these planes and improving them.  And because the sun is required for solar power this can be a problem on overcast and cloudy days.  When improvements have been made in technology then perhaps this will be a more viable solution. 

One great thing about solar panels is that they do not give off any pollution at all to the earth.  Also, the production of energy by using solar power has no noise pollution or emissions associated with it. The downfall of the solar panels is that they cost a lot to make and transport to various locations. This means that we will not be seeing solar powered airplanes flying in the mass market anytime soon. It simply just has not been well developed enough as a viable idea. It is always hard to make predictions because one never knows how the economy is going to change. 

Of course there are many aspects that make solar power something worth investigating and studying further. It could be a way to gain energy in locations that have no other source of energy available at all. Even if the solar powered airplane cannot be used today, going green is about planning for the future of the earth and its inhabitants.  It definitely is a possible plan for the future, one that clearly has many advantages. Solar powered airplanes need to be perfected in order to be what the world needs.

Article Source: http://www.articlesbase.com/environment-articles/solar-powered-airplanes-874393.html

About the Author

Find the best deal on the auto insurance coverage you need. Visit us today for money-saving tips and receive free auto insurance quotes for the cheapest insurance rates from respected insurance companies.

Ventilation by Exhaust Fans

Author: Siouzanna Terlitskaia

An exhaust fan is a mechanical ventilation device that helps to draw out stale and impure air from your home and bring in fresh air, thereby improving the quality of indoor air. Exhaust fans are typically ducted to the exteriors of your house, through which bad indoor air can effectively be removed from your living space.

Exhaust fans are classified into various types, mainly depending on the type of mount and the location where you need to install the fans. The different types are:

1. Ceiling Mounted Exhaust Fans: As the name suggests, ceiling exhaust fans are those which are installed in the ceiling. Such fans expel stale air from your home upwards through the roof.  The fan is connected to ducting, which is exhausted outside the home via an external vent, like a roof cap or soffit exhaust vent.

2. Inline Exhaust Fans: Unlike ceiling exhaust fans that are installed directly into the ceiling, inline exhaust fans are typically mounted in-between ducting, hence the name inline fan. For instance, if you wanted to ventilate an area that did not have clearance or space for a ceiling mount fan, you would make use of inline exhaust fans to ventilate such areas. The exhaust fan would be placed in between the ductwork and the stale air would travel through the ducts and ultimately be expelled from your home.  Since inline fans are not mounted directly to the ceiling, they are very quiet.  When installing an inline fan, to reduce noise, we recommend using an insulated flex duct that is at least eight feet long from the intake port on the ceiling to the inline fan.
Inline exhaust fans are ideal for exhausting areas or rooms where you cannot, or do not wish to install the exhaust fan directly. Since these types of exhaust fans are mounted in remote areas, they are also referred to as remote mounted exhaust fans. Inline exhaust fans can either be single-port (exhausting from a single area) or multi-port (exhausting from multiple areas).

3. Wall Mounted Exhaust Fans: These exhaust fans are installed on walls. Since they are installed on exterior walls of the home and not on interior walls, the stale air has a direct route to the outside of your home and thus no duct work is required in installing these exhaust fans.

4. Combination Exhaust Fans: Exhaust fans are also available as combination units. You have the choice of a fan-light combination where the exhaust fan provides illumination as well, or heat-fan-light combination wherein you get a heater, light and ventilating fan all in a single device.

5. Exterior Remote Mounted Exhaust Fans: While most other exhaust fans are installed inside your home and push stale air out, exterior remote mounted fans are installed outside your home and pull out stale indoor air instead of pushing it out. The main benefit of these exhaust fans is that regardless of however noisy they are, most of the noise remains outside your home.

6. Kitchen Range Exhaust Fans: These fans are mounted inside the range hood over your kitchen stove. Such fans not only help to rid your kitchen of stale air but also help to expel bad odors and reduce moisture levels in your cooking area.
 
These several types of exhaust fans can be used for complete ventilation of your bilding including intermittent local ventilation for baths, kitchens, dryer rooms; continuous whole building ventilation, and for exhausting hard-to-air spaces such as crawl spaces, attics, and basements.

Exhaust fans are very effective at ventilating your home and other living spaces. Without proper ventilation, the air inside your home can get filled with harmful contaminants and disease causing pathogens.

Pollutants such as pesticides, harmful gases, smoke, pet dander, lead, asbestos, dust mites, paint fumes, grease etc get released into indoor air due to daily activities such as cooking, smoking, burning fuel, bathing, renovating etc. In addition to these pollutants, activities such as bathing, cooking, and washing also release excess moisture in the air and make indoor air extremely humid. If not ventilated adequately, these added pollutants and increased moisture levels can decrease the quality of indoor air greatly, thereby leading to various problems such as:

Health problems including asthma, allergies, nose bleeds, skin rashes, headaches, nausea, and other breathing disorders. In fact, according to the Environmental Protection Agency, a large percentage of the over 20 million annual asthma cases in the US alone can be attributed to bad indoor air quality.

- Split, warped and rotted furniture due to excess humidity.
- Cracked and peeling paint on the walls.
- Formation of fungus, mold spores, and mildew, which in turn lead to severe health problems.
 
Thus, by using exhaust fans to ventilate your building efficiently and completely, thereby improving indoor air quality, you can avoid of all these problems.

When sizing an exhaust fan that does not open directly to the outside but is ducted, it is important to ensure that the exhaust fan has the capability to move stale air throughout the duct and ultimately to the outside. Here, we first need to understand what static pressure and equivalent duct length is.

Inside every duct, there is a constant pressure being exerted at any point from all directions. When an exhaust fan moves air through the duct, the air counters resistance from this pressure which is known as static pressure. Thus, an exhaust fan has to have the ability to overcome the static pressure in a duct so as to effectively duct stale air to the outside of your home. This can be done by calculating the equivalent duct length of any duct.

Additional information can be found at the Canada Blower company web site http://canadablower.com/fans/index.html.

Susan Terlitski
Canadian Process Air Systems Designer
Canada Blower
http://canadablower.com/hvac/index.html
http://canadablower.com/blowers/index.html

Article Source: http://www.articlesbase.com/recycling-articles/ventilation-by-exhaust-fans-1343822.html

About the Author

Canadian air-handling systems designer. Mrs. Siouzanna Terlitskaia, nis-co@nis-co.com Canadian Air Systems http://nis-co.com

Basics of Solar Attic Fans and How they Can Reduce Your Cooling Costs

Author: Sascha Deri

Solar Attic Fans are a Breeze

If you're looking for an inexpensive way to use solar energy in your life, consider using a solar attic fan to exhaust hot air from your attic. These fans are powered by electricity generated by solar electric panels. The solar module may be integrated with the fan or physically separate from it and connected only by an electric wire, which can allow for the best placement of each component. Installed on a rooftop or in an end-wall or gable, solar attic fans operate whenever there's sunlight striking the solar module.

How They Work

Using electric fans to cool off an attic space isn't new; many households already use fans to expel excess heat that builds up under the roof. These fans are usually connected to household AC power using a manual or thermostatic switch. The principle is simple: air trapped under a peaked roof bathed in sunlight becomes very hot. By conduction, that heat passes into the rooms beneath through their ceilings, increasing the temperature of that whole story of the house. The result is either discomfort or an increased use of power-hungry air conditioning. By exhausting hot air from the attic space, attic fans reduce the need for air conditioning, saving money and energy in the process.

Solar attic fans simply replace the grid energy source with free solar energy. They run when you need them most-- when the sun is shining and adding heat to your house. They eliminate the need for AC wiring because the fan comes with its own power supply, a small solar panel wired directly to the fan; and they can be installed anywhere that full, unobstructed sunlight is available for their solar modules.

What's Available

Some models are self-contained units that must be installed on a rooftop where they can both receive solar power and best vent the attic or building space. Other models allow for the fan and the solar module to be installed separately; in these models, the fan is typically mounted between framing studs on an end-wall or gable wall of an attic, usually where a passive vent hole already exists. The fan is aimed to blow air out of the attic, thus drawing cool air into the attic from other vent openings. The solar module powering the fan is typically installed on the rooftop or bracketed to an overhang. The module and fan are then connected using the supplied electrical cable. All solar attic fans have DC motors that run "solar-direct"--- that is, directly from current produced by the solar module as it converts sunlight into electricity. That means daytime use only, but that's also when the attic gets the hottest and venting is most needed.

Additional Benefits

Solar attic fans can provide year-round benefits, even in the wintertime when excessive heat is not usually a problem. Wintertime ventilation can help to prevent moisture build-up in the attic space that might otherwise dampen insulation, reducing its effectiveness, or contribute to mold growth,  peeling paint or flaking plaster.

Available options

Some manufacturers, such as Natural Light, offer an optional thermal switch that can limit the fan's operation based on attic temperature. When the preset minimum temperature is reached (80°F. for this brand), the fan will turn on as long as there's sunlight to power it. At a preset minimum temperature (70°F.), the fan will turn off, even if sunlight is available. You can decide if a thermal switch makes sense for your installation based on your interest in winter or cold-weather venting.

Installation Considerations

Solar attic fans are not ideally suited to all houses, so make a careful evaluation before you buy one. There are different models for peaked and flat rooftops and installation varies accordingly. Peaked rooftops with unfinished attic spaces are the most common installations. Some models' solar modules are adjustable to allow better aiming into the prevailing sunlight, while some have modules that are integral to the fan housing and are therefore dependent on the roof pitch for how well they're aimed toward incoming sunlight.

Be certain that the orientation of your house is good for solar exposure. Shadows from trees or chimneys or other buildings will render your solar attic fan useless. Also note how the sun's angle in the sky changes during the year. If you plan your attic fan installation based on the winter sun angle, you may find a very different situation on your rooftop six months later! The good news is that during summertime in the northern latitudes, the sun's path is more directly overhead, so chances are that most winter shadows will be out of your way.

Another important consideration is the need for passive venting. Hot air blown out of the attic space must be replaced by cooler air from somewhere else. You know what they say: Nature hates a vacuum! So your attic must have sufficient intake venting. Common sources include passive vents in the soffits or the end-walls of the attic. If your house has ridge venting, a roof-mounted solar attic fan may not be right for you. Ridge vents are designed to release hot air that has risen and accumulated under the peak of the roof. A solar attic fan would tend to compete with the ridge vents and may actually draw replacement air in through the nearest vents, creating a small area of airflow that leaves the majority of the hot attic space underserved. In this case, a gable or end-wall solar fan may be the better choice.

Rooftop solar attic fans can be installed by any competent contractor, roofer, or handyman with roofing experience. Since cutting a hole in the roof deck is necessary, choose someone whose work you trust and who offers a warranty against water leaks. On a pitched roof installation, the fan should be placed as high up toward the peak as possible in order to release the hottest air that has risen into the area near the peak. By contrast, gable-type solar attic fans do not require a hole in the roof, since the fan itself is located inside the attic space. For these installations, 2 x 4 blocking, spanning the gap between the mounting studs, can help direct the flow of air outward, increasing efficiency. If a passive vent hole already exists in the target wall, it may need enlargement to accept the volume of airflow from the fan; if there is no hole already present, one must be cut to allow the fan to exhaust hot air to the outside. Of course, the hole should be covered with wire mesh, to keep animals out, and with venting slats, to keep out precipitation.

Prices

Attic fan on Kristen's house
10 Watt Attic Fan on a house in Massachusetts

Solar attic fans range in price from about $350 up to $600 for complete kits and can even include screws and roofing mastic for sealing roof-mounted fan housings to the roof deck. Installation is not included but can be done by any competent homeowner or professional.

Article Source: http://www.articlesbase.com/diy-articles/basics-of-solar-attic-fans-and-how-they-can-reduce-your-cooling-costs-3644719.html

About the Author

Written by altE Store's Ben Gorman.

Founded in 1999, altE, Inc has catered to DIY customers on every continent of the globe. A 2006 Inc. 500 awarded company, altE aims to continue to fulfill its motto, "Making Renewable Do-able," by offering cost competitive, high-quality renewable energy related products and educational services to a broad spectrum of the public. For more information visit their website at www.altEstore.com or contact Toll Free (877) 878-4060.