Heat in engine room in model boat..

Hi folks! I has completed the twin double acting steam engine with homebuilded water-tube pot boiler, 76 mm diameter x 119 mm long with 5 water tube 3/16", plate thickness 1 mm copper, the ends of boiler are reinforced with extra perforated plate brazed inside on endplate, also without stays. The furnace has double wall to better insulation agains hot of pressurized alcohol blow lamp (Saito blow lamp). The chimney has a exhaust steam pipe to blow out of chimney to improve air intake into the furnace and keep less hot out of furnace in engine room. I has test run the steam engine and boiler with good results.

Edited By Jens Eirik Skogstad on 19/05/2010 21:03:23

Edited By David Clark 1 on 21/08/2010 08:54:51

I saw an earlier posted photograph where someone had used silver foil with the reflective side facing the boiler glued to the side walls of his launch. I guess it may help any heat reaching the walls

Andy

From my doodling around with solar stuff I stumbled across the fact that the best colour for emitting heat is black.

Radiators around the house should in fact be painted with black, not white paint to maximise heat emmission.

...can't see the missus agreeing though...

I would read up on modern heat insulation stuff jens, there's bound to be something which meets your needs.

Also the home furnace metal casting internet community will have quite a few tech heads who will know what you should look for.

Here's a chap who's trying to use his microwave as a furnace for silver and Gold

He's got up to about 1000 degrees Centigrade in his home microwave so far

...instant superheated steam pot noodle has become a reality...just watch your fingers

He finds that ceramic fibre wool protects the walls of his microwave oven

That might be what you are looking for.

gl

Edited By Ady1 on 22/03/2012 01:13:53

Don't worry Ady, radiators give out most of their heat by convection (warming up air around them) not radiation - think about it, if a double rad was only using radiation only a quarter of it woudl be effective, a quarter would heat the wall and the middle bits would do nothing. That's what they have fins on them as well. You can improve radiators by purring foil behind them and by putting a shelf above it to deflect the rising airstream away from the walls and into the room.

If you paint a rad black, it will dump too much heat (although my wife would approve of that!)

Neil