Back to the Trevithick Dredger Engine. No aliens… promise.
OK, it is not just the fascination with Antarctica and whatever it is that is going on down there, and that they are NOT TELLING US!
But SWMBO has insisted that I assist with the renovation currently going on with an investment property. Unfortunately, I am very handy with all sorts of skills which she finds useful, like assembling flat pack kitchens and laundrys, and welding broken windows, and winching crooked concrete steps, and removing rubbish in my ute (which is now fixed after the failed thieving attempt).
But I managed to grab a few hours in the workshop today, so I made the pre-heater for the boiler water feed.
This was another Trevithick invention, using the exhausted steam to heat the water before it is pumped into the boiler.
It is a tube within a tube, and the inner tube (copper) has separate inlet and outlets, each with its own flange.
It looks simple, but it has 10 parts. All silver soldered. Too many to solder in one heating session. It needed several redos before it was satisfactory. But seems good.
There! Did not mention aliens once. But did you see this video…just watch it!