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 Arocket for my narrowboat

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Stephen cooper



Posts : 13
Join date : 2016-08-08

PostSubject: Arocket for my narrowboat   Mon Aug 08, 2016 7:24 am

Hi guys

This is the rocket stove i built to replace a fuel guzzling mulit fuel stove
on my narrowboat . boy what a difference its made.

1  uses less fuel.
2  heats up many time faster.
3  no smoke so happy nabours.
4  can (soon) be upgraded with a hotair ducting system.


 

Iv got to thank

ppotty1  T2H  and a guy in the ukraine  stepbystep.
for the ideas used in this stove.
you guys rock thanks.


Last edited by Stephen cooper on Wed Aug 10, 2016 12:06 pm; edited 1 time in total
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gadily
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PostSubject: Re: Arocket for my narrowboat   Wed Aug 10, 2016 2:36 am

i have to say thats a really nice stove

though you have beaten me to turning it sideways so im asking what are your temps like when its fired up

i also note that you have also used air slots to the heat exchanger what area are you heating up ?
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Stephen cooper



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Join date : 2016-08-08

PostSubject: Re: Arocket for my narrowboat   Wed Aug 10, 2016 11:25 am

hi
Thank you.
iv not got a digi temp reader but if you look at the pic of the test burn  you can see a purple color on the convector tubes , that was really hot. iv got a 65 foot narrowboat which has a 51 x 6.5 foot cabine  it gets nice and warm. but i need a fan to spread the heat to the ends.
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gadily
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PostSubject: Re: Arocket for my narrowboat   Thu Aug 11, 2016 6:27 am

best way i can suggest is by using the thin plastic 4x2" channel system and using the computer fans as they are low energy usage can even run them on solar power

on your system i couldnt see if you used air channels at the bottom of your system or have you just gone straight to the firebox

as i see it or would change it is to cut the top lower extend the sides out by an inch then put your primary air back into the system where it is as heating that primary air even more improves your system the flow of push up the system before entering the box gives a push pull effect the pull is on your chimney

i think with secondary air id lower the tube again therefore getting cold air for the system but is also being super heated where it is now

cant see any other possible changes to your system to further improve convection of hot air other than you can extend them pipes down a bit more

it maybe possible to use the 3 tubes either side but using an air intake scoop at an angle to fire out the air the velocity of 3 tubes going into one would fire the hot air further into the cabin space

or add another plate at the rear to the scoop above the system remember reducing the mass of air into a smaller space speeds up the flow of air
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Stephen cooper



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Join date : 2016-08-08

PostSubject: Re: Arocket for my narrowboat   Thu Aug 11, 2016 9:02 am

Hi Gadily

your thoughts on the ducting system are very close to what i am going to do. I will be using the insulated ducting out of a caravan and a large computer fan .

Just like ppottys stove, my air goes in at the bottom of the firebox and up ducts to the top of the firebox . the ducts are thin stainless steel so get hot really fast .

i agree with your thoughts on the secondary air . At the time i built the stove every one was super heating the secondary air and i did the same . Im not going to change it now (next stove build i will).

The convection on this stove is good as it is . so no plans to change it in this stove. The convection tubes help to get more heat out of the exchanger ,  but there is plenty still going up the chimney, and thats where the hotair ducting comes in. Im going to make a hotair stove that fits around the chimney at the bottom (think  vw beetle heater) and duct it into the ends of the boat .

PS when i say "plenty going up the chimney" its still only a small amount compared to the old wood stove i replaced.
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gadily
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PostSubject: Re: Arocket for my narrowboat   Fri Aug 12, 2016 5:44 am

just to warn you dont put the fan near heat they burn out quickly due to over heating

http://www.ebay.co.uk/itm/120mm-1000RPM-Blue-32x-LED-Gaming-System-Computer-PC-Coolant-Cooling-Case-Fan-/231726392170?hash=item35f3f8236a:g:2e0AAOSw5VFWJhhe

http://www.ebay.co.uk/itm/PowerCool-Glacier-Series-20cm-200mm-Blue-LED-Case-Fan-3-Pin-LED-CPU-Computer-PC-/272084856461?hash=item3f59856e8d:g:5SoAAOSwZ1lWedef

so any air must be blown past the heater system computer fans have a naughty habbit of throwing the air at the sides of the wall but if you use a 6 sided plastic adapter it counter acts the push at the sides

you will see what i mean with this vid



fans you can get is about 6" or the standared 4" they do make a bigger one but cost is not effective to quote it but your looking at an 8"

cheers for info on your system couldnt see if you used ppottys system im like you im going down the sideways route myself not much keen on the 17" forward of the stove so slim lining it myself

ive got other things to do so wont get mine done this year so getting another ready for the winter now unless i can complete the system but i think it will be a little big for the shed of mine so looking at a smaller system to run it in there
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Stephen cooper



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PostSubject: Re: Arocket for my narrowboat   Fri Aug 12, 2016 9:44 am

Hi

Yes im mounting the fan in a airbox on the freshair feed pipe. It will be mounted remote of the stove and blow into the air heater on the stove . the air then goes around the heater and then down the insulated ducting to the ends of the boat.

The airbox for the fan will stop any sideways air flow from the fan and have some speed controls and a stove bypass flap valve , so in the summer i can blow cool air to the boat.

Im going to make a small stove too . Like T2Hs turbo rocket design with  longer legs and caster wheels , handles and a pellet feed system. Its going to be a emergency heat source. i can wheel into my kitchen in the event of  power cuts , floods , stampedes , or asteroid collision Very Happy

Good luck with your build and thanks for the input . I think i will post a few more pics of the inside of my stove as the original pics i took kinda disappeared off my PC .

Again thankyou
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gadily
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PostSubject: Re: Arocket for my narrowboat   Sat Aug 13, 2016 4:21 am

ive gone the firebox type of the turbo rocket early tests give good results from it then ive done the ppottys way of a push onto the system

its nearly complete now also has air baffles on it to provide more heat out of the system
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T2H
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PostSubject: Re: Arocket for my narrowboat   Sat Aug 13, 2016 5:08 am

What a great little stove Stephen, so glad you joined in on the talks and sharing ideas.
That stove is a work of art.
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T2H
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PostSubject: Re: Arocket for my narrowboat   Sat Aug 13, 2016 5:16 am

Gadily great find on the vortex boiler burner idea.

Here is the response I gave the young man.

Great job on troubleshooting the issue. I would think that you can still have the vortex generation and great velocity as well if you designed the fins in a cork screw fashion now it may not be beneficial in creating more btu production but it would be worth doing just to see what the results are. Very creative!
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Stephen cooper



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Join date : 2016-08-08

PostSubject: Re: Arocket for my narrowboat   Sat Aug 13, 2016 11:41 am

Well guys im really feeling it on this forum cheers

It gets the creative juices flowing and thats what makes the magic happen . bouncing ideas back and forth. I know we are using ideas that have been done already , But its in the detail and little changes that things are advanced . So lets keep changing sh~t and see what happens.
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