Batch Rocket for large(ish) wood shop

Hello!

I am new here and should also say that I am completely new to rocket stoves, mass heaters and basically this whole world of heating solutions.
I'm planning a wood shop build which is gonna be 14x6x3m (84m2, 252m3), (roughly 46x20x9.8', 920sq.ft, 9016 cubic feet). It will be stick framed and insulated. According to what I've read I require about 18kw to heat this kind of space. Winters here typically are fairly mild, -4 to -7C, occasionally dropping to -10 or below.

I was looking for options other than central heating so I landed here. I've watched videos and read this and that but it seems like a great rabbit hole and a bit difficult to wrap my head around how the physics of all this works, exactly what I need, how large I need it and how to build it.

My takeaways so far -
* I probably don't require a mass heater since I won't be sleeping there
* I would prefer to put a heater in the corner to save space but I suppose it would be a lot more efficient to put it somewhere alongside the middle of the long wall so that the heat spreads to both sides of the shop evenly.

I would appreciate any advice or guidance. Thanks!

Hi Rudolf,
I don't actually have a lot of experience with rockets, but I do want to encourage you to consider a mass. I know you comment that you are not going to sleep there, but you still can have the benefit of slower heat loss when you are not there, and reduce the need to feed it while you are there. Just fire it up once, and then you can work all day in the shop.

Welcome to Permies, Rudolf!

You are correct that you don't need or want a lot of mass for your application. Probably Thomas Rubino's shop heater would be the best guide for you; he has posted complete details of his build that you could follow, including what not to do.

if not the center of the space, the middle of the long wall would definitely be the best place for your heater.

Hi Rudolf;
My shop stove is a 7" Batchbox that uses a double 55 gallon barrel over the riser.
That arrangement provides quick radiant heat to my poorly insulated auto shop in northern Montana.
After that heat leaves the barrels it then enters a brick bell, that bell heats up during the day and stores heat for overnight.
Your wood shop will be much easier to maintain above freezing temps with a bell rather than without.

Peter Berg heats his workshop with a three-barrel Batchbox that has no mass at all.