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Rocket Mass Stove Question

 
Kia Tikaboo
Posts: 10
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I am currently building a rocket mass stove to heat the perimeter of my greenhouse.

I am using 6" single wall stove pipe to channel the exhaust, and was wondering what the maximum length should be.

I consulted Ianto's book and he indicates a range of 32 to 40 ft.

My run will be 40 ft with 4 90 degree turns.

Does that seem reasonable?

Thanks,

kt
 
Lasse Holmes
Posts: 20
Location: Homer, Alaska
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Kia Tikaboo wrote:I am currently building a rocket mass stove to heat the perimeter of my greenhouse.

I am using 6" single wall stove pipe to channel the exhaust, and was wondering what the maximum length should be.

I consulted Ianto's book and he indicates a range of 32 to 40 ft.

My run will be 40 ft with 4 90 degree turns.

Does that seem reasonable?

Thanks,

kt

There are many variables but as a general statement 40' can work for an average rocket. Use tees instead of 90's so that you have cleanout access.
 
Kia Tikaboo
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Dear Lasse,

Greeting from the North Cascades. My current design is to put in a clean-out at the front, and also below the chimney. The remaining flow will be routed through 3 runs around the perimeter of my greenhouse.

Do you think I need to add clean-outs to the "battery" portion?

When's breakup this year? I've heard it was quite the winter for you,

Best,

kt
 
Lasse Holmes
Posts: 20
Location: Homer, Alaska
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KT,
Cleanouts are key for long term maintenance. Any flue run needs to have an opening where you can stick a flue brush/shop vac hose into to clean even if it isn't that often. I only need to open mine up and clean every other year unless I burn less than ideal wood (I only had to do that once to learn that lesson). I thought one of my runs would be accessible from one end (it has some twists and turns) and when it came time to clean I found out that I really need another cleanout so now I have to add one after the fact which is a pain. So, if you have any u-bends to do, make them H's with two tees and you have cleanouts or figure out what it takes. Breakup is kind of starting I guess (it is melting a bit in the latter part of the day these days but we still have feets of snow!). Yes, what an awesome winter!
Lasse
(Canyon)
 
Kia Tikaboo
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Dear Lasse,

Thanks for the input. Glad to hear that you had a good winter.

I've always loved AK, I just not tough enough for your winters.

Happy Break-up!

kt
 
I agree. Here's the link: http://richsoil.com/wood-heat.jsp
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