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5x5 Vertical farming hempy bucket LED grow

Discussion in 'LED and other Lighting' started by T-Time, Sep 25, 2017.

  1.  
    Randomblame

    Randomblame Well-Known Member


    I would like to know, how much air/min. flows thru the radiator, inline fans have usually a lot of pressure.
    Would also like to see the inside of his housing and how it is made.
    With enough airflow it's possible to get temps below the freezing point..


     
  2.  
    ttystikk

    ttystikk Well-Known Member

    It would be rather difficult to get temps below ambient.
     
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  3.  
    Randomblame

    Randomblame Well-Known Member

    Yepp, but did you watch the video? CPU temps are -8 - -20°C.
    Several fans in a row increase the pressure, but not the flow. This means that only about 2x 100-120cbm/h(max. of 1 fan) are pressed through the radiator, but completely, because of the high pressure.
    I'm curious what an inline fan would do on such a radiator since they usually build up 20-30x that much pressure as a PC fan?
    Imagine, you could save the cost of your chiller ..
     
    Last edited: Nov 1, 2017
  4.  
    T-Time

    T-Time Well-Known Member

    By all means ;)
    I didn't have to top up the res since it was first filled and it doesnt look like theres any water gone from it. Its fully enclosed res. Temp at light off is 19*C
     
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  5.  
    T-Time

    T-Time Well-Known Member

    Heres how it looks inside. The gan i use is TD-Silent.
    On first speed its rated 430 m3/h and thats what i run. On second one it gous up to 580 m3/h
     

    Attached Files:

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  6.  
    ttystikk

    ttystikk Well-Known Member

    I did watch the video and I saw no evidence that he reduced the CPU temperature below ambient temperature for the room. That's still a laudable achievement, but it won't make ice for drinks. Did I miss something?
     
  7.  
    ttystikk

    ttystikk Well-Known Member

    Bueno! Looks like a home built version of an 'Icebox' from Hydro Innovations. I have several of them.

    Are you pushing or drawing air through it to extract heat?

    Where is that warm air going?
     
  8.  
    Randomblame

    Randomblame Well-Known Member

    Screenshot_20171101-094959.png

    Yepp, seems so.

    The CUP is running well below room temps it runs even below the freezing point, OC'ed to 4,6GHz and the CPU is rated with 130w at 3,2GHz. To get -8 to -20°C CPU temps you usually need liquid nitrogene.

    Do you think it's a fake? With enough airflow and pressure, a negative temperature delta seems quite feasible.
     
    Last edited: Nov 1, 2017
  9.  
    wietefras

    wietefras Well-Known Member

    It doesn't make sense though. How can you cool something solid below ambient?

    The only way to cool lower than ambient is to use cooling by evaporation or something like that. Just blowing air over a solid surface isn't going to cool it below the temperature of the air that's used for the blowing.

    :edit: Ah OK, just saw the end of the video. Nice prank :)
     
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  10.  
    ttystikk

    ttystikk Well-Known Member

    The video that you posted was clearly a troll, self admitted by the host.

    Stacking fans won't by itself drop temperatures like that, or else no one would ever bother with compressors.

    Maybe those readings are reductions from baseline? That would make more sense.
     
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  11.  
    ttystikk

    ttystikk Well-Known Member

    Quite so.

    @Randomblame you've been Punk'd! LOL
     
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  12.  
    T-Time

    T-Time Well-Known Member

    Drawing air through it.
    Air is going outside the tent, into the wall and out the room. Unfortunatelly not in a straight line. About two 90* bends and one about 150* but I can't do much about it
    20170927_174614.jpg
     
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  13.  
    ttystikk

    ttystikk Well-Known Member

    So the heat is being dumped into the room the tent is in, correct? I like it!

    Water cooled, vertical LED grow...

    Kinda chokes me up, I'm so proud... Lol
     
    T-Time likes this.
  14.  
    T-Time

    T-Time Well-Known Member

    Outside the room. Its good I left the drivers inside as it would be really cold in there. Too cold.
    You LEaD the way :P
    Now I remembered when I was first was looking at leds I saw Your posts raving about them.
    I bought blurple led (black dog led alike) and first grow I did with it was oozing resin from the buds!!! Yield wasn't special but I knew its the right direction. I switched to HPS after and set a new record in my tent (decent quality 1.3g/W out of auto strain :D ) but was more and more interested in LED tech. I knew it would catch up someday. So here I am now , with new gear trying to bump the quality and beat a new record. It is really addicting hobby :hump:
     
  15.  
    Randomblame

    Randomblame Well-Known Member

    With enough airflow and pressure, a negative temperature delta seems quite feasible.

    Shit, you got me...!
     
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  16.  
    ttystikk

    ttystikk Well-Known Member

    As part of my research program into reducing the overall power consumption footprint of large scale indoor cultivation, I've made a careful study of heat movement and refrigeration.

    There are indeed pressure and temperature effects but they are small- or they require lots of room.
     
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  17.  
    T-Time

    T-Time Well-Known Member

    Update time :)

    Ladies are starting to grow some fur :bigjoint:
    Not much to report. Turned down lights a bit as they are really close to the plants and started noticing some burns on just a few fan leaves. Top bar running @320W and bottom @330W
    I have to shave them a bit again. Its like a jungle in there :weed:

    Photos as usual, crap. Its hard to take the good photo from behind the bars :P

    20171107_192318.jpg 20171107_192343.jpg 20171107_192422.jpg 20171107_192612.jpg 20171107_192331.jpg 20171107_192712-4577x3595.jpg
     
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  18.  
    T-Time

    T-Time Well-Known Member

    Just went to the tent to stare at them :weed:

    Can You see the differentce between top and bottom row ?
    Top looks to me more developed. The only difference is that top was getting fresh supply of oxygenated water and grown more water roots.
     

    Attached Files:

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  19.  
    Rocket Soul

    Rocket Soul Well-Known Member

    Very nice setup! If the top is more developed it could be due to higher temps in top of the tent leading to higher rate of metabolism.
     
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  20.  
    lukio

    lukio Well-Known Member

    this is so cool!
     

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