Joel Rutledge

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since Dec 08, 2016
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Recent posts by Joel Rutledge

Awesome! Thank you for figuring that out for me.  Can anyone tell me how THICK I should make the concrete mass that I'll be pouring around the drums for the bench?  (Since I'm urban I'm using concrete instead of cob).   I was guessing that at the closest points to the drum, I'd probably want it between 1 to 2 inches thick for structural stability? That makes it considerably thicker at the corners...  Is that too much mass, or too little?  Thanks!
3 years ago
Here"s a view kind of down on the newly modified/opened up manifold.  It is now 4-1/2" across for most of the 12" length.  Kind of a flattened D shaped opening...  I'm hoping that will have sufficient flow for a 6" system?  

So, what would be the CSA of a 4-1/4" x 7" rectangular pipe? Anyone?  The manifold should flow a bit better than that, I would think...

I'm also going to add some concrete to the floor of the first barrel, to smooth the flow of air into the manifold...
3 years ago
Would it matter if the 6" inlet at A is actually at the bottom of the bell barrel instead of at top?that's where it exits the existing core and manifold, and It seems like it is the exit to the chimney flue being low, that would matter most?
3 years ago
Thank you, Satamax !   I'm heading outside with a hammer and snips to fix the manifold, then build up the new mass bed!  Thanks!
3 years ago
And will concrete mix work for the mass?  Maybe with lots of stones in it?  Thanks!
3 years ago
Hmmm... Bypass surgery...  Like this?
3 years ago
Hi Satamax.  Ok, you lost me...  Are you saying that I have too much area with that many barrels?  What if I delete one from the bench: won't that just reduce the heat I can get out of the system?  

Or is the problem just the draft?  How would I create a bypass?  My exhaust goes out the side wall then vertical outside. I thought this would help with draft since the chimney (flue pipe) walls would always be colder than the air inside the greenhouse...?

What do I need to do to make this system work?  It's coooold in the greenhouse!   Thanks!
3 years ago
Satamax, I appreciate your help!  Sorry for the lag here, but had a death in the family.  Now it is time to return to living...   Besides, it is going to be in freezing temps end of the week, and I don't want to kill all the tomato plants..

Can you tell me which would be better: a barrel "bell" system after the manifold, or three 7' lengths of 6" pipe?  Would I use a pair of fullsize 55gal drums, or the smaller 30gal sized barrels?

Would a 6" pipe going from the manifold into the bell barrel work good or does it need to be bigger?  I'm assuming that I should use a pair of whole barrels instead of cutting them in half (how would i seal the "floor" then)?   Would i cut the entire ends out between the two barrels, or make a bottom exit from one to the other?  

Then the 6" pipe exiting the end of the bell barrels should be located low on the end to force the hot air to expand inside the bells, right? Is there any magic distance for inlet or outlet?  

Finally, why couldn't I just mix up quikrete to form the mass around the barrels?

Thanks for your help!!
3 years ago
Satamax, would a 7' long bell be better than three lengths of stovepipe back and forth?  

What do i need to do: how to seal the bottom of it, do I insulate under, how far down should the entry and exit holes be for a 6" pipe, do they fit flush or stick in a ways...?

And would I just cover it with concrete to make the mass? I'm in an urban area.  

Thanks!
3 years ago