|
Post by Orange on Oct 30, 2017 9:06:02 GMT -8
We put a cast iron top on the fire box for rapid heat up. One fire per 24hrs keeps it plesant in out 50m^2 downstairs. hey, how quickly does your BB iron top heat up the space? i'd love to have the iron top instead of barrel for quick heat.
|
|
|
Post by Orange on Oct 30, 2017 0:14:49 GMT -8
ah, I thought you have a bell bypass instead of chimney damper.
|
|
|
Post by Orange on Oct 28, 2017 8:58:21 GMT -8
well, I think you're correct about the oven being too low. Other than that it seems to extract and hold the heat well. How big is the place? and since the exit gases are 70-80C you can maybe add a bit more mass or ISA. Than we have a perfect forumula 180mm system = 8m2 ISA
|
|
|
Post by Orange on Oct 28, 2017 6:40:32 GMT -8
I've seen high-temperature silicones in stores rated around 1200C. Some say will shortly tolerate even 1500C.
|
|
|
scandal
Oct 27, 2017 12:55:12 GMT -8
Post by Orange on Oct 27, 2017 12:55:12 GMT -8
I'm just concerned because "back in the days" of j-tubes, flue pipes and elbows shortening the riser would bring smoke back. I wonder why bells haven't been "invented" earlier, its not only more efficient but easier to build and cheaper.
|
|
|
Post by Orange on Oct 26, 2017 12:57:48 GMT -8
|
|
|
Post by Orange on Oct 26, 2017 12:53:15 GMT -8
I guess you need some bricks to direct exhaust so it fills bench before exit like this:
|
|
|
Post by Orange on Oct 26, 2017 12:28:11 GMT -8
|
|
|
Post by Orange on Oct 26, 2017 12:21:49 GMT -8
great, bench powered without riser Does it have bypass?
|
|
|
scandal
Oct 26, 2017 12:11:56 GMT -8
Post by Orange on Oct 26, 2017 12:11:56 GMT -8
I'd like a shorter riser so i can cook. My concern is will the short riser 4-8B have enough power and velocity to push the gasses trough a massive bench (without bypass)... Have a look at shilo's realizations @ his facebook profile. Unfortunately he hardly ever responds to private msgs beautiful work, he has riserless models with bench so I guess 4B is working. Could not figure if he uses bypass or not.
|
|
|
Post by Orange on Oct 26, 2017 3:50:25 GMT -8
Hi everyone ! Thanks ! - ronyon, the flames were there in the second video because of a mighty reloading ! On the first one it was only a small fire. Black oven directly in the bell. - benoit, I sent you a PM. The plancha is home-made, 8 mm thick. - jura, the height of the riser is between 8 and 10 times the base value. For a 230 it's 100 mm under the minimal size. The heaters are too high otherwise. see the spreadsheet here : uzume-asso.org/batchrocket_construction.htmlregards, I've noticed the port depth you have is 110mm, almost double. But I like the design
|
|
|
Post by Orange on Oct 26, 2017 3:17:18 GMT -8
I like the idea of direct fire instead of heat exchanger! So far i've only seen this type
|
|
|
Post by Orange on Oct 26, 2017 3:03:24 GMT -8
Peter, are the slope bricks in the firebox for easier 2nd fire start or they have other purpose?
|
|
|
Post by Orange on Oct 26, 2017 2:58:30 GMT -8
nice work pouring the perlite from the top and making simple bell bypass interesting second air solution. how long does it need to heat up and how long does the heat last? What is the oven temperature?
|
|
|
Post by Orange on Oct 25, 2017 12:38:34 GMT -8
you don't have those slope bricks in the feed box so i guess they're not crucial?
|
|