Building a Sauna rocket stove - Starting with planning this!

Hi there,

i´m planning my gardensauna with an rocket stove at the moment. I´m from germany (sorry for my bad english...), now here its winter. I would like to use the "dark months" for planning it down to the last detail . I can do the concrete foundation for the builing at earliest april 2023 because of the tempretures. So lets start..

THE BUILDING
First of all, i will give you some information about the building size. The building dimensions will be (inside) about 2,10 x 2,10 x 2,10 meters. At this picture you can see the base (grey), the terasse (red) and the buiding itself (light gray/transparent).

>> see picture in attachment

THE ROCKET (MASS) HEATER
For this building i´m planning the sauna stove at the moment. I hope, you can help me by thinking for the right dimensions. I would like to make the woodfeeder 20x20 cm. With this size the firing will be confortable for me. I know, that i down need to use an mass. But i´m thinking to use and save some heat in a litte mass. More to this later.

I´m planning (and thinking about) the stove dimensions mainly with the picture of the PDF "Rocket Mass Heaters" Third Edition by Ianto Evans and Leslie Jackson. I´m not publishing this picture, i don´t know it its protected.

Let´s think about the Dimensions...!
A (Feeder size) = 20 x 20 cm
B (High feeder tube) = 30 cm (incl. ash container. This thing will be about 7 cm high)
C (Burn tunnel) = 11,5 cm high, 20 cm wide, 58,5 cm long (58,5 cm = lenght of D in the smaller picture)
E (Heat riser) = 80,5 cm high; 20 x 20 cm wide
F (Cross sectional) = Would do this with the bricks, too. Round or square?
G (Space on top) = 5 cm
k (exhaust) = 15 cm (round)

Material: I would like to use clinker bricks for the feeder, burn tunnel and heat riser. This type of brick works with tempretures about 1.300 Celsius.

My questions:
- Would the system work in this dimensions? Some missing informations for this considerations?
- Do i need an bigger exhaust pipe? Maybe 20 cm diameter?

Let´s start this thing! I thank you in advance for you help. I would inform you here for the construction progress with all pictures and plans

Regards,
Benne

Hi, Benne

Welcome to the forum!

I understand about building the building first and then installing a Rocket Stove or a Rocket Mass Heater.

So which one?

Benne said, "Would the system work in this dimensions? Some missing informations for this considerations?
- Do i need an bigger exhaust pipe? Maybe 20 cm diameter?

This is why I say plan the stove first.

I would plan the stove first then plan the building around the stove since this is the planning stage.

Have you seen these plans:

https://permies.com/t/193729/Plans-Sauna-Rocket-Heater

Some thread for you or others:

https://permies.com/t/178065/Basic-Rocket-Heater-Sauna

https://permies.com/t/131500/permaculture-projects/Wheaton-Labs-Rocket-Sauna-Build

Hey Anne,

thank you very much for your answer.

Actually, its a bit to late. A already build the ground. I‘ve found the Material for the base and brought it to the right lenght in my workshop. (those red and dark grey things at my plan)

Thank you for the links. I already read those threads.

3D plans: there is an advice, that the plans will come soon. Are they available?

Maybe i would do the version with the barrel-included version from the links 😁🤷🏻‍♂️ maybe that will be better for my sauna. But there are no informations about the dimensions?

Regards!

Anne Miller wrote:Hi, Benne

Welcome to the forum!

I understand about building the building first and then installing a Rocket Stove or a Rocket Mass Heater.

So which one?

Benne said, "Would the system work in this dimensions? Some missing informations for this considerations?
- Do i need an bigger exhaust pipe? Maybe 20 cm diameter?

This is why I say plan the stove first.

I would plan the stove first then plan the building around the stove since this is the planning stage.

Have you seen these plans:

https://permies.com/t/193729/Plans-Sauna-Rocket-Heater

Some thread for you or others:

https://permies.com/t/178065/Basic-Rocket-Heater-Sauna

https://permies.com/t/131500/permaculture-projects/Wheaton-Labs-Rocket-Sauna-Build

Benne said, "Actually, its a bit to late. A already build the ground.

That is great! So glad for you!

That is why I always say for "you or others"!

The posts on the forum are perennial so there might be someone else who might benefit from those threads.

Have a great day!