Rocket stove design pics - feeback?

Hello all - I put up some design pics of an outdoor kitchen I'm planning. I'm interested in feedback on the rocket stove end of it - the big cooker on the left end.
I'll be using it for making beer, apple butter, canning tomatoes, etc. Its a full size keg fit into half an oil barrel.

I'm wondering if I have the dimensions about right or if I'm heading for problems?
Should I or could I turn the end of the wood feeder hole up so I can put wood strait down into it?

The space around the barrel and stove pipe will be filled with vermiculite.

https://plus.google.com/photos/102864124129468059027/albums/5809383206289413137

Thanks for suggestions - I'm new to this!

Joe

Joe, nice drafting! What program do you draw with?

I can see a build-up of condensed water ending up in your cold-smoker. Do you have a effluent drain built in somewhere?

I concur, nice draft work. Did you use K-3D?

What kind of temperatures to you hope to achieve in your grill area? You might consider splitting the exhaust into two parallels under your grill tops and then conjoin them again before the cold smoker. Doing so would give you better heat distribution for grilling or roasting. Also, do you plan on including some sort of drip pan/grease trap?

Thanks. I used Google's sketch-up.it's free and fairly easy to use.
I didn't think about venting and catching grease in the smoker. I'll do that and redesign.

The grill will be lined with firebrick and frequently used as a fireplace - burning grease off.

How do I calculate the size of the openings for the rocket stove? How do I optimize the length of the vertical stove pipe, the rise?
Is it trial and error? I plan to do some experimenting before I cement it up, but want to be in the ball park to start.

Thanks again,

Joe

Does this link help you http://www.rocketstove.org/index.php/design-tool-link-from-menu

Thanks. That helps. The video was helpful too at:
http://www.rocketstove.org/index.php/household-stoves

There was some interesting work on fan stoves too at:
http://www.aprovecho.org/lab/index.php

But thats a different post

Joe

Hi Joe

After thinking about your post yesterday my suggestion would be to get your hands on "Rocket Mass heaters Super efficient wood stoves you can build yourself". By Ianto Evans and Leslie Jackson. Look for the 2007 edition. Page 35 will be of some help to you. If you need help finding the publication let me know.

I got your reply and have spent some time around that site. I would like to build a few rocket cooking stoves as we live in a remote area and the ability to cook without anything but wood appeals to me. I'm wondering why I have never heard of this kind of fire before.

Fred