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Thread: More pictures

  1. #33
    Nepenthes Specialist nepenthes gracilis's Avatar
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    I would (I'm going to do this in the summer) load up my misting system resevoir with ice cubes and ice packs, this will lower the water temp and increase evaporation temperature drop versus regular room temp water. Maybe you could mist in the day with iced water? The evap pads will provide a degree of cooling in more humid weather but yes as you stated their effect on the area in which they are cooling is horrible if not even noticable!

  2. #34

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    Interesting comment. I've thought about floating ice in the water res for the misting system to cool things off during the day. Have you experimented with it?
    Trent

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    Quote Originally Posted by [b
    Quote[/b] (Trent @ Nov. 13 2003,9:02)]... refrigeration, not air conditioning, would do the trick. Coils would be housed in a section of wall on the north side of the room.
    Hi Trent,

    technically there is no difference between air conditioning and refrigiration. The way they work is identical. Only the way you're placing the parts of these systems in your GH is different. I would be very careful not to set the tempratures too low because easily ice could build up on the cooling pipes. This would not only drop the humidity in your GH by much but would also reduce the efficency of the system. As long as a commercial available air conditioning system are big enough to fulfill your requirements I won't go for a much more expensive special build unit.

    Cheers Joachim

    P.S.: Very nice and healthy looking plants Dustin!

  4. #36
    Nepenthes Specialist nepenthes gracilis's Avatar
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    Thank you Joachim! [img]http://www.**********.com/iB_html312/non-cgi/emoticons/smile.gif[/img]

    Just a quick 2 cents here. If I were using AC to cool, I would pipe the intake out fo my growing area, so this way only the cool air would be directed in here, or have a small misting head infront of the AC outlet to keep RH at a steady mark.

  5. #37

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    Hello Joachim and Dustin,
    As it was explained to me by these guys, air conditioners are designed to remove humidity, and that the traditional units would not be as energy efficient as a refrigeration unit used to keep stored meat and produce cool, where humidity must remain high. My AC guys were talking about a small, walk-in cooler type of setup, even suggesting running a 240v line for further efficiency. This would simply be fans blowing over the coils. The rest of the room would be traditional greenhouse construction, maybe using triple wall polycarbonate of the walls and top. There would also be a misting/fogging system.
    Maybe the refrigeration setup I described is overkill...
    Any input is appreciated.

    Trent

  6. #38
    Nepenthes Specialist nepenthes gracilis's Avatar
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    We've got one of those at work. Big expensive deal, but small and probably inefficent (considering how long the store has been there). It's about 12 ft long by 7 ft wide and it keeps all the soda and drinks nice a refreshing. Is that the type of setup you are debating over? If so, what a great idea...but what a great deal of money to run it! Glad I live in a more temperate climate! [img]http://www.**********.com/iB_html312/non-cgi/emoticons/wink.gif[/img]

    On the misting ice water idea I am going to try it...just freeze a great big chunk of RO water somehow....maybe borrow one of the ice block molds from work and do it that way, doesn't have to be a perfect cube but just a biig chunk of ice [img]http://www.**********.com/iB_html312/non-cgi/emoticons/wink.gif[/img]

    Ona further comment, I would like to know how do you humidify your greenhouse Trent. (just curious) [img]http://www.**********.com/iB_html312/non-cgi/emoticons/smile.gif[/img]

  7. #39

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    Lets see if I can guess this one. First off, South Florida weather helps alot. Second, he sprays the plants in his greenhouse with RO water to keep the humidity really high.

    Did I remember it right Trent?

    SF

  8. #40

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    Hehehe,
    Snowy Falcon knows 'cause he's been to our greenhouse. Luckily, we are blessed with extensive periods of very humid weather, but still, we need to mist, and all misting is done with RO water. The plants are watered with heavy drenches of collected rainwater, and during dry spells, RO water. My wife, Michelle, monitors everything through the course of the afternoon, and hand syringes individual plants if they need it. She will often take the hose and spray down the floor with tap water, causing the humidity to rise immediately. Our goal is to keep humidity above 70 percent, and during the day it is typically about 76 percent. Nights are at 90 percent. the Neps share space with Paphs and Phal orchids on the shady side, and Vandas, Cattleyas and Dendrobiums on the bright side. The orchids are sectioned off and are treated differently from the Nepenthes. By the way, we grow Bulbophyllums and Cirrhopetalums in and amongst the Nepenthes with great success.
    But, basically, Snowy has it right.
    Trent

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