It's correct except for the top chamber, where the best configuration I've found so far for the stumbler and exit port are: (stumbler 40mm x 230mm, exit port 117mm x 118mm or as near as square as you can get the exit port).
I haven't updated the Vortex thread with that info yet, but it seems to be working great so far. In that sketchup the only thing I can see different is the top chamber Exit Port is a bit constricted, because the top layer of the floor should be back a little and sloped as it the above pics.
One advantage i can see with using a riserless core is the low profile - the height of the core is the height of the firebox .This allows the firebox to be higher up - even at 50 cm from the floor the cooktop could be at standard worktop height - for easier loading and cleaning out.
This allows the firebox to be higher up - even at 50 cm from the floor the cooktop could be at standard worktop height - for easier loading and cleaning out.
Yup that's teh advantage but teh view of vortex behind the glass is priceless. I'd love to see the Testo results from the matt's core. is it available anywhere?
I've heated my home and cooked with woodstoves for 30 + years and for me not having to bend down is priceless ! i can sit down to light my boxstove and the bread oven firebox is 70 CM off the ground.It's all about what you want to achieve - if watching the vortex is what you want to prioritise , fine. As for the testo numbers you would have to ask Matt.My personal view in this is that whilst clean combustion is important as well as efficiency for those of us who don't have a testo we'll never know.Even the smallest changes on any core can have an effect on the numbers and that's before you factor in firewood humidity etc. It would be interesting to know the difference in % between different cores and how the numbers are affected by external factors - operation , delta T etc.Another factor is the size of buildings and insulation .Nearby we have traditional stone houses , some are 100s m2 no insulation vs our small , well insulated cabin.
Yeah sorry, I really need to do an update for the Vortex thread soon. I've been putting it off as I hoped to better understand the recent discovery with the top chamber exit port before writing it up, but then Skywalker asked if there was a sketchup of the core. I pointed him at the one you did and explained the recent improvement I'd found by making the port square. He offered to update the .skp file to include it. That's where the confusion came from.
I sent this question to a acquaintance professor who deals with fluid dynamics. He is damn busy but sometimes replies to questions of aficionados. I tried to program the flow of the stream in your setup but there are too many variables and time dependent parameters needed to do it properly.
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me!
Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING.
Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money?
Aug 20, 2019 18:41:48 GMT -8
mannytheseacow: michaelegan: download AutoCAD student version for free... import .SKP
Aug 23, 2019 13:33:44 GMT -8
topbaza: hi everyone, been searching all over net and this is were i need to be i think!!
Sept 28, 2019 6:16:25 GMT -8
anounaki: Hi, why I cant upload photos when I make new tread to this forum?
Feb 28, 2020 2:09:40 GMT -8
ahansen: photos under 1 mb not possible?
Jun 4, 2020 0:09:21 GMT -8
belgiangulch: Photo's are possible. They must be downloaded elsewhere and the image url (adress) is copyied.
Sept 14, 2020 7:26:15 GMT -8
belgiangulch: While creating a thread click on the small picture in the banner above the reply. A box pops up, paste the image url in the box. Pay no attention to the huge list of numbers and such.When you finish and hit reply your post with pictures will come up.
Sept 14, 2020 7:29:27 GMT -8
deadstarsstillburn: Hi there. I was directed this way by folks on the Permies.com website and am hoping I can get some information on how a total newbie can get started designing, siting, building, and not-dying-in-a-horrible-house-fire with a new RMH in a 160-year old home
Oct 21, 2020 6:52:10 GMT -8
deadstarsstillburn: The people over there recommended either a 6" batchbox or an 8" J-tube. I don't know what those are but am going to try to figure that out. What I need is a blueprint that I can scale to fit the need for my house. I have something likne 5000 square feet
Oct 21, 2020 6:53:00 GMT -8
deadstarsstillburn: but I do not need to heat all of it by any means. probably only need to heat half of that, maybe less.
Oct 21, 2020 6:53:15 GMT -8
deadstarsstillburn: moreover, the house has 3 storeys (large attic) so I assume if I get very efficient heating on the ground floor, that will go a long way toward heating the upstairs as well, no?
Oct 21, 2020 6:53:59 GMT -8
BenAlexanderT: Happy new year everybody. I wish you the best
Dec 31, 2020 15:06:14 GMT -8
Solomon: Anybody in Southern Oregon, in Jackson or Josephine counties?
Jan 16, 2021 21:54:43 GMT -8
gnomedome: i realsie this is from 2009
Apr 14, 2021 8:30:44 GMT -8
gnomedome: i realize this is from 2009 id love to see the photos from this ..as im looking to build a sauna soon similar to this .... if anyody sees this post firstname.lastname@example.org..... the photos in this post did not show up
Apr 14, 2021 8:32:00 GMT -8