RF w/firebox underneath

[F3X]

Here is a concept with the fire box tucked under the main chamber to limit overall length.

What do you think?
Main chamber is 60 x 30.
No frame yet. Still lots to do.

[Rodcrafter]

If you open up some of the bottom of the cook chamber where the FB is under it. The fuel consumption will be less than if you only open the end. You will still have the plate between the CC shelving and the fire.

Nice drawing. IMHO

[F3X]

Question on the Pit Calc??
Do you use the chamber area above the diverter plate or the complete chamber area for calcs?
What is the "throat size" is it the passage between the FB & Chamber?

Thanks~~

[Smokeone]

It is the complete chamber size, and yes the throat is the FB to cook chamber.
Note: this is my understanding, I am not smart enough to come up with something like that

[Frank_Cox]

yeah that....
for the cook chamber volume use the entire cook chamber volume.
the throat size is the opening between the CC and the FB.
drawing looks good! I would be interested to see how it performs. one thing to watch for is "Dead Air Volume". usually found when the air volume being moved is asked to make too many turns or changes in direction and an eddy is caused in the inside corner of a turn or after a throat. this forms a restriction and the volume of the air mass in the eddy is dead space with no changing air movement.

[Gizmo]

Frank I thought "Dead Air Volume" was referring to the total volume of air being displaced by parts of a dead animal.

gotcha!, bet you read that whole sentence before you realized it was a complete waste of virtual ink....

On a serious note - is there a way to mathematically limit those from a specific design?

And to think I was going to name a cooker Eddy - doesn't sound too good now....

[Smokeone]

yeah that....
for the cook chamber volume use the entire cook chamber volume.
the throat size is the opening between the CC and the FB.
drawing looks good! I would be interested to see how it performs. one thing to watch for is "Dead Air Volume". usually found when the air volume being moved is asked to make too many turns or changes in direction and an eddy is caused in the inside corner of a turn or after a throat. this forms a restriction and the volume of the air mass in the eddy is dead space with no changing air movement.

Yep that's what I was thinking.

[Frank_Cox]

haha, I did read the whole thing! lol....
anyway, the best way is too visualize the air mass like a stream or flowing water moving through the smoker lazily. every object in it's path has an effect on the path the airmass will take. on the downstream side of an object in the airmasses path there will be a slightly lower pressure zone which will suck some of the airmass back into it and cause an eddy to form same thing with going around a corner.

[F3X]

Thanks for the tips, I will tweak it a bit more and post what I come up with.

Great Site!

[Frank_Cox]

awesome, Thanks!

[Tom_Heath]

Frank Frank Frank.....

Come on man,,, how bout so some of us can understand. LOL


Its just like the difference of

A good fart

1 ,,,, pants on

OR

2 ,,,, pants off.



LMAO less resistance is always better.

[Smokeone]

Where has this thread gone?
I admit I do understand now. Thanks, ST.

[Frank_Cox]

great explanation ST hahaha

[Tom_Heath]

Well ya know,,,,, not all of us are HVAC learned, LOL WOW I am still laughing. @@ myself ,,,, again.

[Jethro]

about the dead air volume, wouldn't a fan help in that department??? speaking of fans, do you have any????
this looks like an awesome design!!!