Heres the heater that is now installed in a machine shop at RN Diesels in Daventry. This was a first test burn just set up in the doorway of the workshop, and yes,... that is snow on the ground outside. Notice that even with only a relatively short flue, it is burning without smoke.
https://www.aulro.com/afvb/images/im...009/07/677.jpg
https://www.aulro.com/afvb/images/im...009/07/678.jpg
Here it is installed, where the temperature is 19degC on top of the lathe and 26degC on the overhead gantry enabling the blokes to work in their shirtsleeves, it was -4deg outside.
https://www.aulro.com/afvb/images/im...009/07/679.jpg
This heater is designed for maximum heat output and consumes up to 5 litres of oil an hour. something they are very glad of as previously they had to pay to have it removed.
PS The bloke that actually built it is a great LandRover fan and owner and now runs his 1964 "Greenie" into the shop on cold weekends to work on it. The red tank on the wall behind his head is the header tank for the heater and at the time when this was taken was still being filled by hand.
You will notice that old LPG bottles have been used extensively here as they were more easily available than brake drums.
https://www.aulro.com/afvb/images/im...009/07/680.jpg

