Search found 75 matches

by TriangleTom
Fri Jun 30, 2017 10:20 pm
Forum: Technical - Engines and Boilers
Topic: Literature on Ofeldts?
Replies: 20
Views: 7475

Re: Literature on Ofeldts?

I think there are a couple in the Steam Boat Association "approved design" library. Kevin Slater at Steamwell Boilers (Manor Farm Engineering) would know of others, and would be worth talking to anyway By the way, if you want to go to 300 psi, then copper is certainly taboo in the UK, regardless of...
by TriangleTom
Fri Jun 30, 2017 8:03 pm
Forum: Technical - Engines and Boilers
Topic: Literature on Ofeldts?
Replies: 20
Views: 7475

Re: Literature on Ofeldts?

Hi Tom, for coal firing i prefer a thre-drum-boiler. They have a bigger water-capacity than the ofeldts with vertical drum (up to three times). There are a lot of designs for a three-drum different from yarrows like roberts or STUART Mandip (Kelly built such one for his RECIPROCA). Here is one of m...
by TriangleTom
Thu Jun 29, 2017 10:23 pm
Forum: Technical - Engines and Boilers
Topic: Literature on Ofeldts?
Replies: 20
Views: 7475

Re: Literature on Ofeldts?

If it's for a steamboat, and you're coal firing, go for the Yarrow. They're somewhat bigger and heavier than the Ofeldts for the same steaming capacity, and the time to reach pressure is a little worse, but the real point is that Yarrows are very easy for external tube cleaning, which you'll need t...
by TriangleTom
Thu Jun 29, 2017 5:39 pm
Forum: Technical - Engines and Boilers
Topic: Literature on Ofeldts?
Replies: 20
Views: 7475

Re: Literature on Ofeldts?

Thanks for all of the excellent replies. Based on what I've read and seen from you all, Ofeldts are really good for fast steaming. I'm still in the middle of deciding between using an Ofeldt and a 3-drum (Yarrow?) boiler, and based on what I've read it's probably going to come down to ease of constr...
by TriangleTom
Mon Jun 26, 2017 3:26 pm
Forum: Technical - Engines and Boilers
Topic: Literature on Ofeldts?
Replies: 20
Views: 7475

Literature on Ofeldts?

I haven't been able to find any good sources for design or orientation of Ofeldt boilers. Can anyone recommend anything?
by TriangleTom
Fri Jun 23, 2017 6:27 pm
Forum: Technical - Engines and Boilers
Topic: Chevron W680 as cylinder oil?
Replies: 6
Views: 3048

Re: Chevron W680 as cylinder oil?

Other than Green Velvet, what else is used as SCO?
by TriangleTom
Fri Jun 23, 2017 2:39 am
Forum: Technical - Engines and Boilers
Topic: Chevron W680 as cylinder oil?
Replies: 6
Views: 3048

Chevron W680 as cylinder oil?

Has anybody experimented with Chevron W680 or any other similar products for cylinder lubrication? It's intended for use in environments up to 300 PSI steam pressure and up to 575 F, and the price is pretty good at ~$90 for a 5 gallon bucket. Info https://cglapps.chevron.com/msdspds/PDSDetailPage.as...
by TriangleTom
Thu Jun 22, 2017 11:13 pm
Forum: Technical - non Engines and Boilers
Topic: Invidious comparisons
Replies: 28
Views: 9652

Re: Invidious comparisons

I suggest the following option as it should largely short circuit such thinking. I am resolved to give out the speed in Furlongs per Fortnight. First of all, especially here in the states, few people have any idea how far a furlong is and the same thing is true of a fortnight. Comments and suggeste...
by TriangleTom
Thu Jun 22, 2017 10:11 pm
Forum: Technical - Engines and Boilers
Topic: PDF Book on Triple and Quadruple Expansion engines
Replies: 78
Views: 27646

Re: PDF Book on Triple and Quadruple Expansion engines

Sorry to resuscitate an old thread, but as I'm getting close to finishing my engine design I thought that I'd clear a few things up when I refer to steam reheat. In my engine design, which is quadruple expansion, the steam reheat takes place between the LP cylinder on the HP side (second steam expan...
by TriangleTom
Fri Nov 18, 2016 6:00 pm
Forum: Technical - Engines and Boilers
Topic: PDF Book on Triple and Quadruple Expansion engines
Replies: 78
Views: 27646

Re: PDF Book on Triple and Quadruple Expansion engines

Thanks for this excellent publication! Long nights of study here for me. I also have the original Scientific American article about the "ARROW", a yacht that put Turbinia to shame in the late 1890s. This is the only triple reheat steam plant I have ever seen, and I have worked in steam power since ...