Good solar fan for greenhouse ?

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hubballi

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Good solar fan for greenhouse ?
« on: January 14, 2012, 12:46 »
As I can't get air in my greenhouse very well with it open I need an aditional fan. Can anyone recommend a decent (cheap) solar fan ?

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Ice

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Re: Good solar fan for greenhouse ?
« Reply #1 on: January 14, 2012, 12:58 »
You've only just posted about the condensation and had one reply.  Don't you think it's a bit early to be buying solar fans unless you have money to spare?
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hubballi

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Re: Good solar fan for greenhouse ?
« Reply #2 on: January 15, 2012, 11:48 »
I would have thought a fan would be a reasonable thing to buy (yes I can afford one if the price is right but thanks for your concern anyway;-) if it reduces condensation and cools the greenhouse in the summer.

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mumofstig

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Re: Good solar fan for greenhouse ?
« Reply #3 on: January 15, 2012, 12:28 »
these are quite effective i think
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sunshineband

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Re: Good solar fan for greenhouse ?
« Reply #4 on: January 15, 2012, 13:28 »
I think I may not have made it clear inmy reply to your condensation question hubbali:

The water in the air is the problem, combined with the temperature difference between the inside and outside of your greenhouse.

In order the address the condensation you must

1. Allow for ventilation from time to time to freshne the air inside the greenhouse

2. Keep conditions inside as dry as possible, to reduce water vapour  in the air

I am not sure how a fan will really help this, unless you are looking for an extractor fan of course?

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hubballi

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Re: Good solar fan for greenhouse ?
« Reply #5 on: January 16, 2012, 16:26 »
So when your car window is misted up or condensed what do you do ? You put the blower on which removes the condensation. A fan would do this and help move the moisture with a window open also.

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Yorkie

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Re: Good solar fan for greenhouse ?
« Reply #6 on: January 16, 2012, 17:40 »
A fan on its own is useless because all it does is heat the air so that the moisture changes from a condensated state to a non-condensated state.

You have to remove the moisture from the actual air as well.  Which is what Mum said.  If you just move the moisture around inside the polytunnel (or car) without ventilation to the outside, you will not stop the problem - just make it appear as though it's gone away temporarily.
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hubballi

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Re: Good solar fan for greenhouse ?
« Reply #7 on: January 16, 2012, 19:36 »
I did say about opening the greenhouse window and door.

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Ice

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Re: Good solar fan for greenhouse ?
« Reply #8 on: January 16, 2012, 21:49 »
So when your car window is misted up or condensed what do you do ? You put the blower on which removes the condensation. A fan would do this and help move the moisture with a window open also.
Yours might be different but my car heater blows warm air to get rid of the condensation.  Just having the fan on cold and having the window open would take rather a long time to get rid of the condensation, if at all.



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