Satamax Antone wrote:Hi everybody.
Well, daft'ish question.
What we want in a rocket is high temps in the flame path, very high ones if possible.
I was wondering, even tho firebricks aren't insulative, they have inertia, so a burn tunel made only of firebricks oughs to work all right. Since heat will take it's time to travel through the brick, temps inside will raise to a high temp.
Am i completely wrong? What's your opinion on the subject.
The idea behid my thinking is to try to extract a smidge more "primary" heat out of a small rocket.
Satamax Antone wrote:Thanks a lot Len.
Well, i've seen it all too. My litle thing in the workshop works all right. Tho, it's not big enough i need a faster way to heat the workshop up.
Satamax Antone wrote:hanks a lot guys.
Len, i have another requirement, no smoke. I was wondering how clean a pocket rocket burns. Because this would be about the best aproach. With an insulated heat riser and barrel to extract the most heat as possible.
But without an insulated burn tunel.
Kirk Mobert wrote:Pocket rockets don't burn as cleanly as a full blown rocket stove, but they do fairly well for themselves.
Attaching a bell, or multiple bells to a pocket rocket is an interesting proposition. Never been done before (to my knowledge) and I've no idea how it would work.
It DOES sound promising, so, I think I'll try it.
Len Ovens wrote:I hadn't meant with a pocket, I would still use a burn tunnel/riser in the first bell... just in this case no mass. He has a large uninsulated, stone walled, shop IIRC, and a 4-6inch pocket rocket is not going to give enough heat. 8 inch or bigger, I think. Even then it would be going the whole time he was using the shop... I don't know what that would do for the wood at night getting chilled, but if enough heat soaked into the walls it might be ok.
This is a unique use, probably not something that would work anywhere else. (at least not in a wood framed insulated "stick house") There may actually be enough mass in the building that a high mass heater won't work... This would be a great situation to play with as it would test out stuff we don't see anywhere else. I don't think that will happen though the testing will be, "it feels nice" or "well it's better than before" or "that didn't work, I'm still cold".
Kirk Mobert wrote:
Anyhow, An ultra-light rocket stove, running into successive bells is an interesting idea too. Brilliant, I'd say.
Remember that BOTH the intake and exhaust come into the BOTTOM of each bell. It's helpful to set the exhaust slightly lower than the intake.
Satamax Antone wrote:Len, you've been inspiring me.
So, i have bought castable. I will reuse the tall gas bottle i've used as a barrell earlier on. Make the burn tunel and first cast part of the burn tunel into a small 13kilos gas bottle, as per my first rocket. I will cast the rest of the burn tunel too. So that's durable. Vermiculite mixed with castable mix. I have all the proper tubes but one iirc. I will use the other gas bottle i have leftover as a bell, with the tap on the bottom as a drain. Inlet into the bell, 6 incher. Outlet 4.3 incher. Do you think this ough to work?
Big question i've asked somewhere else too.
How do i mix? I guess i mix once the castable wet? Half and half by volume? More vermiculite than castable? Do i vibrate?
Thanks a lot.