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Author Topic: what size solar panel do i need for this  (Read 1257 times)

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xboxman

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what size solar panel do i need for this
« on: October 11, 2006, 08:06:38 PM »
Hi

 i'm going to get a DC round fan and i want to run it off a solar panel for my solar heater and not sure if i'm doing the math right .

 the fan is 12 volts DC the amp rate is 1.420 so i come up with 17.04 watts .

but should i have a panel that has at least 1.42 amps output ?

thanks
« Last Edit: October 11, 2006, 08:06:38 PM by (unknown) »
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snuffy

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Re: what size solar panel do i need for this
« Reply #1 on: October 11, 2006, 03:13:04 PM »
Is your fan going to run 24/7? If so, yes.
« Last Edit: October 11, 2006, 03:13:04 PM by snuffy »
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snuffy

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Re: what size solar panel do i need for this
« Reply #2 on: October 11, 2006, 03:14:30 PM »
Actually more, unless your sun also shines 24/7.
« Last Edit: October 11, 2006, 03:14:30 PM by snuffy »
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SamoaPower

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Re: what size solar panel do i need for this
« Reply #3 on: October 11, 2006, 03:50:38 PM »
In my location (tropical island), I would need a 100 Watt panel to run a 17W load.

« Last Edit: October 11, 2006, 03:50:38 PM by SamoaPower »
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ghurd

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Re: what size solar panel do i need for this
« Reply #4 on: October 11, 2006, 08:16:18 PM »
I'll guess a fan for a solar heater is not running 24/7.

If it is only running when the sun is shining, a 1.42A PV 'should' be enough, but I would go a little larger.

A 1.42A PV is rated about 25W.

G-
« Last Edit: October 11, 2006, 08:16:18 PM by ghurd »
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stephent

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Re: what size solar panel do i need for this
« Reply #5 on: October 11, 2006, 08:19:23 PM »
There's solar powered "roof" vents for sale on a lot of places--one of those might work.
« Last Edit: October 11, 2006, 08:19:23 PM by stephent »
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