|
Post by jliebler on May 10, 2017 17:09:54 GMT -8
The "sidewinder" is close but not what I want. I know that side loading has been done, this is more what I want. I've created a sketchup model of what I hope to incorporate into my new house. It is based on a side loading 8" batch box. The design intends to use a commercially available masonry heater door. I started this design before Peter "adopted" the floor channel and I'm using a different version of the "Walker channel". It also uses a commercially available masonry heater part as the oven and the corresponding door. I intend to make the "damper" assemblies by welding a steel plate to a steel rod and creating refractory castings for the housings. The basic concept is a bell within a bell. The first bell is largely made of ceramic fiber board, contains the oven and the oven wall. My hope is that I will achieve 400 C oven temperatures. The second, much larger bell includes a heated "hearth" bench. The chimney is within the outer brick skin but insulated from the firebrick walls. The two dampers allow: oven only operation, bypassing the bulk of the second bell; and "fireplace" operation bypassing both bells; and limiting oven temperature while heating by effectively making it function as a single large double wall bell. The outer skin is on a separate layer. I'd sure like some critical opinions! www.dropbox.com/s/4kmn20ayip37f8p/square%20bell%20SIDE%20DRAFT%20BATCH%20front%20oven%20%20w.%20Walkerchannel111.skp?dl=0
|
|
serg247
Junior Member
The mountain can not be conquered, it can allow it to ascend...
Posts: 111
|
Post by serg247 on May 11, 2017 0:10:49 GMT -8
Please save in 8 version Sketchup.
|
|
|
Post by satamax on May 11, 2017 12:14:52 GMT -8
|
|
|
Post by jliebler on May 11, 2017 14:48:39 GMT -8
Thank You Satamax, for the link to a side loader thread. As I did this "model" I tried to copy the "normal" 8" batch box dimensions. My intention is that primary air and secondary air enter in the same place as they would with a "normal" BB, at the bottom center of the short wall. However the door I'm proposing has adjustable "air wash" ports on the top and bottom, my plan is to keep them closed, possibly opening them slightly to keep the glass clear. Other than the door's air wash ports, all combustion air will flow through a metal air box that crosses under the "bench". The air inlet, under the bench can be easily sealed to reduce heat loss when the heater is idle, also total combustion air could be "throttled" as well( the ratio of primary to secondary air is only changeable by modifying the metal "floor channel"). Additionally an "ash drawer" can slide into the air box. My inclusion of the two sliding dampers permits "wasteful fireplace mode", where all pretense of heat storage is sacrificed. "Wasteful fireplace mode" could be useful to reduce smoke while opening the door for reloading.
|
|
|
Post by jliebler on May 11, 2017 20:36:47 GMT -8
Can side loading really work! The "normal" batch box can be loaded essentially full of wood while a side loader with the same firebox dimensions cannot because the wood will fall into the door. Ah but I think I have a work around, I'll cast 3ea. 1 1/4" wide, 5" tall "posts" into the bottom of the door opening. Now I should be able to load close to a cubic foot of 18" long pieces which is near the design goal of 14.2Kg.
|
|
|
Post by jliebler on May 15, 2017 9:42:08 GMT -8
Here is the link to an updated version that uses Peter's "floor channel" with a more complicated cast firebox and a cast riser bottom. www.dropbox.com/s/28voivjaei4tso6/bell%20in%20a%20bell%20SIDE%20LOAD%20BATCH%20front%20oven%20%20w.%20floor%20channel.skp?dl=0I'm concerned about the damper at the top of the first bell, I'll either remove it or change it to have a refractory "blade". I have most of the molds modeled in sketch-up (they will be built up of pieces of plywood, almost all 3/4"). I plan on casting a fly ash geopolymer and test firing the "core" outdoors. For the test fires I won't have the proper door but "improvise" with a cast slab.
|
|