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Three methods to heat your greenhouse.

Discussion in 'Heating or Cooling of your AP system.' started by Murray, Nov 19, 2014.

  1. Murray

    Murray Site Admin Staff Member

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    Todo10 likes this.
  2. Ashley D

    Ashley D New Member

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    Just the sort of stuff I was wondering about, Good find.
     
  3. Robert123

    Robert123 Active Member

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    Storing energy via thermal mass in a greenhouse is just another of the advantages of AP. Experience shows that supplemental heating is often necessary to ensure you don't get a freeze in the greenhouse, but the AP is certainly a wonderful heat sink.

    I like the idea of merging it with a Subterranean Heating and Cooling System (SHCS). Need to minimize bio-fouling, but it's worth a design attempt.
     
  4. Murray

    Murray Site Admin Staff Member

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    That particular website Robert is an excellent resource for info on the subject.
    I like the idea of burying 800 yards of 1" pipe buried at at least 6', and pumping the water through.
    The air could be a separate idea employed as well as the water pipe.

    A bit costly to put into service but would be very low cost to run.

    What do you think?
     
  5. Robert123

    Robert123 Active Member

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    I really need to think on it some. We've delayed the greenhouse build till spring, but if I'm going to implement this in the design, it would be very early in the build.

    I agree, it's an interesting design concept. Question is, "What's the return on investment?" Gut feeling tells me 3-5 years, so it might well be worth it.
     
  6. Murray

    Murray Site Admin Staff Member

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    For me the return on investment would be very early, maybe no more that 18 months. Diminished performance of my systems during winter and peak summer temps is one level of payoff, the next level is happy fish that are kept within ideal temp range. This winter just gone I heated with electricity and my power bill..........but, no sick or dead fish.
     
  7. JasonW

    JasonW Member

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    I am currently struggling with our latest sub zero freeze....was down to neg 22 below F. I was as ready as could be but still had some serious failures at that temp. I had a tank six feet under ground for fish and also to help maintain a better temp and it had some ice that morning. I think a greenhouse redesign is possibly in order...or maybe a move south. ;)
     
  8. Robert123

    Robert123 Active Member

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    Wow. So your buried tank started to freeze up? :eek:
     
  9. JasonW

    JasonW Member

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    yeah.. not sure why but the weather changed so suddenly that there was not much time to prepare. We went from forty above to 20 below overnight.
     
  10. Murray

    Murray Site Admin Staff Member

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    That is seriously cold. I just cannot imagine weather that cold.
     
  11. JasonW

    JasonW Member

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    Yeah it was a bit of a shocker for this early into the winter. Some sort of Arctic blast that effected the entire country. Sure put a damper on my veggies! I was aware the cold was coming but more in the form of just below zero...not twenty below , so my efforts fell short and I awoke to two solidly frozen grow beds. But we are up and going again and making some changes to keeping better heat stored.
     
  12. mwestvang

    mwestvang Member

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    I'm going to plumb propane into the greenhouse so we can run a small propane furnace to keep it above freezing on the days it's needed here in Texas.
     
  13. Aqua Missions

    Aqua Missions New Member

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    Is your greenhouse "sealed"? I would be cautious about the possibility of high CO2 emmisions building up. We have a boiler running in the winter but it has an exhaust vent so none of the gas builds up inside.
     
  14. mwestvang

    mwestvang Member

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    Not sealed tight enough to cause a problem. I run a portable propane heater now when temps get below freezing to keep the plants from dying.
     
  15. eestrada1234

    eestrada1234 Member

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    Here is our solution -- currently we´re around 2º C by nights.

    We made a Rocket Mass Heater. It has a water tank attached to the main body, we circulate the water from an intercooler; inside that intercooler, we circulate the water from both indy 23 systems we have.
     

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    Sayhello2pedro likes this.
  16. eestrada1234

    eestrada1234 Member

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    Here is the final RMH (still waiting for the exhaust vent tubes to arrive; ETA next tuesday)
     

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    Sayhello2pedro likes this.

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