Rocket Stoves and all things pertaining there to!

Dirtdevil
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Re: Rocket Stoves and all things pertaining there to!

Unread post by Dirtdevil » Fri May 10, 2019 8:17 am

Well, I need to get started building this heater. It is going in a greenhouse with a large aquaponic fishtank. The thing that concerns me is that the ducting for the heat sink will have to be directly below the 500 gallon tank and I'm thinking that the tank and water will suck so much heat out of the ducting as it leaves the heater that it will effect the draw on the combustion gasses. Not only does the ducting run under the tank when it leaves the heater but it also comes back under the tank before it is vented outside. What are your thoughts on this. I would like to use the heat beneath the tank to help warm the water but could also install rigid foam over the top of the ducting before I poured the bottom of the fish tank on top of it. If all else fails I would consider installing a fan in the exhaust stack. Have you seen anything on line that addressed these concerns?

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Farmfresh
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Re: Rocket Stoves and all things pertaining there to!

Unread post by Farmfresh » Fri May 10, 2019 9:12 am

OOOOOh.... Aquaponics too?! We need another thread. I have always wanted to do something in that area.
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Dirtdevil
Posts: 51
Joined: Sat Apr 27, 2019 7:13 am

Re: Rocket Stoves and all things pertaining there to!

Unread post by Dirtdevil » Fri Jun 28, 2019 7:40 am

Well I have started building the Rocket mass Heater for my greenhouse. I have to wait for a little cash to get more components to continue. I signed up for a forum that deals with such things. http://donkey32.proboards.com/ You can read the posts without signing up but can't ask questions.
This information would probably only matter to ICU but the consensus of the builders there is that the best way to build a heat riser is by lining a piece of metal duct or some metal tube with ceramic fiber blanket. Quick, easy and cost effective.
https://www.ebay.com/bhp/ceramic-fiber-insulation

It also seems that the preference for new heaters is a batch box design

http://www.batchrocket.eu/en/

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Icu4dzs
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Re: Rocket Stoves and all things pertaining there to!

Unread post by Icu4dzs » Mon Jul 01, 2019 4:15 pm

I agree. The research that has been done clearly identifies these changes as beneficial. In days gone by, everyone (especially Satamax) always said, "Metal is doomed" but then after discovering the ceramic blanket, that appears to have changed. As for the batch style, I have the materials but have not built one for several reasons the most important of which is location, location, location.
That is a really good forum for the subject. You will find several very good folks there eg. Peter Berg, Matt Walker for starters. If you study their methods you will be very satisfied.

Of note is the "P" channel devised by (of course) Peter Berg. It seems to improve the burn at the combustion chamber.

Keep working on it. I think you will be very happy with the results.
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