Barry Brown

Lovely jubbly guys! Thank you so much. Not being the engineer type and having looked at RMH's for years and never being in a position (yet) to build one it seemed possible that as the mass grew in size, so the RMH could grow to match it. I'll have a look at the links now, thanks again evryone.
I did see a chinese/korean/japanese (can't remember and can't find it now) community centre with underfloor heating and it was BIG. The riser was a brick wall (which cracked on first burn) but which was repaired and succeeded in heating the floor. This was done through the conventional method of pipes in trenches, which is costly, I thought earth trenches alone might do it and was interested to find out how big technically it would be possible to go.

So thank you for your comments, very helpful

Yep that's right, the largest rocket mass heater in the world! Oh no, sorry I don't have it, I was hoping to catch someones attention and see theirs. I want to find out the extent to which a rocket mass heater can be stretched, near to where we live (just moved in) here in Cornwall, England is a very large commercial plant grower. They have offered to show us around on Monday 10th December, next week and I would be a happy little bunny wabbit if I could offer them suggestions (if needed) as to how they could use rocket mass heaters to heat the ground upon which the stuff they grow that needs more heat can get it. If that makes sense. So in other words, how far can say a 200ltr barrel rocket stove heat be dragged ( by fan) before the heat dissapates? And, how large is the largest rocket mass heater in the world? I've you tubed it, but nothing spectaculer comes up.

And, how large is it feasable to build a rocket mass heater to heat a massive ground area of say an acre with underground trenches?

All your lovely ideas will be very much apreciated. Thanks people