G'day Guy's,
About 5 years ago I made this flash boiler then work got in the way and it got put in the corner never to be looked at again. Anyway this weekend I decided to drag it out and give it a run. The pic aint the best and I do a pic in better light once I get it plumbed up and the output sorted.
Now for the construction I used a 4" copper pipe for the housing and there is 63 turns of 3/8" copper pipe for the boiler section. The heating unit is a Bunnings cheap burner that uses $1 gas cans and later I'll make a burner that runs off wood gas which is another project. The 4-2" exhaust flue was my first attempt at making a frustum and I was glad it could be put to good use.
I made a 1" angle iron frame for it and used some ali from and old solar hot water panel to enclose it. Today I managed to stuff 4 off insulation panels in so when it's operating the unit will be cool to the touch.

I did convert a 5hp B&S motor into a 2 stroke and got it running on compressed air so the goal is to get this flash boiler to run it.
More to come in the near future as this project advances.
Cheers Bryan