Help: Solar Powered Fan

[martybg]

I need to run 2 Decent Fans completely of Solar Panels.

Also is it possible to run this without Inverter? Can I hook the motor up directly? If yes How?

Also I know that when there's no SUN there would not be any Ventilation, but that's the idea.

What kind of Panel would I need?

What kind of a Fan?

I want it to make a good breeze and not consume that much power.

I'm trying to save as much money as possible on this project...

Thank u!

[SunEagle]

I need to run 2 Decent Fans completely of Solar Panels.

Also is it possible to run this without Inverter? Can I hook the motor up directly? If yes How?

Also I know that when there's no SUN there would not be any Ventilation, but that's the idea.

What kind of Panel would I need?

What kind of a Fan?

I want it to make a good breeze and not consume that much power.

I'm trying to save as much money as possible on this project...

Thank u!

They make solar attic fans the are about 14 inch in diameter and have a 10 to 20 watt solar panel that just hooks right up to the fan motor. I use 2 of these mounted in my eve vents. They move enough hot air out of the attic on hot sunny days. I have seen these cost from $150 to $200 each.

[inetdog]

I need to run 2 Decent Fans completely of Solar Panels.

You did not tell us what kind of fan you are looking for. I am guessing an indoor fan for comfort in hot weather rather than one to move air for heating, etc.
A ceiling fan can move air for comfort very efficiently. The general guideline is that large slow moving blades will create less energy wasting turbulence than smaller fast-moving blades.
There are some very efficient ceiling fans with a long as 5 foot blades that can deliver a lot of quiet air movement for an entire room for less that 100 watts. Although some of these use an internal inverter (variable frequency drive) they are designed to run off 120 volts AC and so would require you to have an inverter and battery in addition to the panels. If you can find one that can be made to accept DC input, you could have a very good deal. But the price will be several hundred dollars just for the fan.
Or you can go for some very small DC fans that you would need one or two of for one person.

[martybg]

Yes I'm talking about indoor fan yes like the ones that can basically move the air around the room with circular motion, can u please supply me links from Ebay of what should I buy?

[Tom123]

I recently picked up a large computer case fan from an electronics surplus place (about 10 inches in diameter). It is 12 volts.
I havent hooked it up to my solar setup yet but tried it on a battery...it moves quite a bit of air.
Tom

[martybg]

Can somebody provide me with ebay links of what should I buy and no I'm not lazy I just wanna make sure i get what I have to

[russ]

Can somebody provide me with ebay links of what should I buy and no I'm not lazy I just wanna make sure i get what I have to

You attempt it first and post your results - then maybe someone will comment yes or no.

[martybg]

UP I still need help can somebody provide me information how I can do this, so far I didn't get reasonable information

[SunEagle]

UP I still need help can somebody provide me information how I can do this, so far I didn't get reasonable information

You can find a lot of different types of solar fans using google. Try "solar attic fans" and then look for the ones that the fan and pv panel are separate. That way you can mount the panel outside and install the fan inside.

I saw one on Amazon made by Rand Solar that was rated 27 watt and 1720 cfm and included a thermostat for about $250 including shipping. Keep looking and you will find others for close to $100 but I do not know how much air they will move.

[OffGridMikey]

Check these out.

I need to run 2 Decent Fans completely of Solar Panels.

Also is it possible to run this without Inverter? Can I hook the motor up directly? If yes How?

Also I know that when there's no SUN there would not be any Ventilation, but that's the idea.

What kind of Panel would I need?

What kind of a Fan?

I want it to make a good breeze and not consume that much power.

I'm trying to save as much money as possible on this project...

Thank u!

http://www.12volt-travel.com/12-volt-fans-heaters-c-94.html

I use the 0.5amp units as they consume almost no power and have two speeds. I power these from a charge controller so I'm not sure how it would handle the higher voltage of the PV's but for $20 it maybe worth it to try.

[Alex75]

Help: Solar Powered Fan

Solar Panels Observe photons from sunlight and generate energy in form of electricity for the home or any official building through the photovoltaic effect theory.

Mod note no links

[Sunking]

Solar Panels Observe photons from sunlight and generate energy in form of electricity for the home or any official building through the photovoltaic effect theory.

Complete rubbish you moron. Observe definition:

1. To conform one's action or practice to (as a law, rite, or condition) : comply with.

2. To inspect or take note of as an augury, omen, or presage .

3. To celebrate or solemnize (as a ceremony or festival) in a customary or accepted way.

4. To watch carefully especially with attention to details or behavior for the purpose of arriving at a judgment,

5. To make a scientific observation on or of

6. To come to realize or know especially through consideration of noted facts.

7. To utter as a remark

Solar PV cells are basically a closed loop nuclear reactor. When a photon of sufficient energy strikes the PV cell, it is absorbed and its energy "knocks" a loose electron from one of the silicon atoms, allowing it to flow freely. The internal construction of the PV cell is like a diode, in that there is a layer of "p" type silicon (that has a deficiency of electrons), sandwiched against a layer of "n" type material (that has an excess of electrons). Because of this construction, when an electron is knocked loose from the "n" type layer, it tends to flow in only one direction out the wire attached to this layer, then through an external circuit to do useful work, and back again into a wire connected to the "p" layer. In other words it is a closed loop nuclear reaction.

Observe that Moron.

[OffGridMikey]

Exactly my thoughts

Sunking,

My thoughts exactly, wtf

[inetdog]

Solar PV cells are basically a closed loop nuclear reactor.

I sure hope not! There is a world of difference between the energy required to move some loose electrons around and the energy required to get into the nucleus of an atom.
Now in terms of incoming radiation (of any sort) knocking things around, yes there is a similarity. But the analogy of droplets of water activating a jet pump would be almost as good in that respect.

[Sunking]

I sure hope not! There is a world of difference between the energy required to move some loose electrons around and the energy required to get into the nucleus of an atom.

You do not have to bust a atom apart to move energy around or release it. It does no thave to be an unstable atom to release or transfer energy from one state to another.

X-rays are nuclear energy is it not? X-rays are man made with nothing more then a high voltage voltage ionizing an inert material, focus the bean at flesh and bones and that in turns knock off photons to strike a film or receiver device for you to see.