Patio rockety stove... light weight, wood pellets

Patio rocket stove

This popped up on my facebook feed. I can't tell how effective it would be at space heating, but for a light weight, streamlined outdoor patio heater I like it.

Where we are evening temperatures tend to drop and something to take the chill off the air while enjoying evening would be welcome.

It's pretty to see the flame through the glass....Ought to be more efficient than some other patio heaters. I wonder if the glass is just cosmetic though? The cap on the top looks like it diverts the hot air back down and around the area. Would it be more effective to have a metal mesh instead that would hold and radiate the heat?

The "glass" is apparently a special stove glass. I'd expect it to be pretty good at radiating heat in that case, much like the glass on a conventional woodstove door. There is another video of him cleaning the soot build up on the inside of the glass using a soft kitchen washing up brush on a long pole, with some washing up water.

Personally I like that this would be
a) a space heater that doesn't use gas - pellets are cheap, easy to store, and easy to handle.
b) wood heat - but because it is rockety it doesn't leave everything and everyone smelling of smoke by the end of the evening. We have a fire pit which we do use, but the fire needs to be pretty large, and use pretty dry wood to ensure it burns cleanly without excessive smoke. It feels wasteful.

I dont know but, I think you would spend a fair bit of time looking at a smoky glass tube.