Search found 11 matches

by Ralph B
Mon Dec 07, 2009 6:06 am
Forum: Technical - non Engines and Boilers
Topic: steam jet air ejector
Replies: 6
Views: 5830

Re: steam jet air ejector

Here is a link to several articles on SJAE's http://www.graham-mfg.com/index.asp?pageId=113

I never thought of using one to dewater the bilge...my mind gets stuck in the box a lot.
by Ralph B
Thu Dec 03, 2009 5:45 pm
Forum: Technical - non Engines and Boilers
Topic: steam jet air ejector
Replies: 6
Views: 5830

steam jet air ejector

Bart had mentioned steam air ejectors earlier. The large steam plants I have worked at as an operator have all used them (as well as the USN) but I never thought of them for small scale usage in a steamboat. One advantage I can see is ensuring a constant flow of steam in the superheater, but I don't...
by Ralph B
Tue Dec 01, 2009 9:26 am
Forum: Technical - Engines and Boilers
Topic: To get a triple
Replies: 26
Views: 17827

Re: To get a triple

I looked at the White Cliffs design, they use a converted Lister and use an interesting valve operation. I also went to Elpenor's site. Does anyone know the hp rating of that engine?
by Ralph B
Mon Nov 30, 2009 7:08 am
Forum: Technical - Engines and Boilers
Topic: To get a triple
Replies: 26
Views: 17827

Re: To get a triple

I downloaded Stumpf's book and have been easing my way through it. I am slowly coming to the realization that a 3 cylinder uniflow would be a better fit...smooth operation, and should be very reliable...if one or even 2 cylinders go down you can still run. The hard part is finding a proven design. A...
by Ralph B
Tue Nov 24, 2009 10:23 am
Forum: General Steamboat stuff
Topic: Steaming down Ullswater
Replies: 2
Views: 3132

Re: Steaming down Ullswater

Looks like it helped to drive on the "right" side of the road. Kidding aside, I do hope not too many people were displaced. Did you mean the road was like that for 400 yards, or there hasn't been flooding like that in 400 years?
by Ralph B
Mon Nov 23, 2009 12:43 pm
Forum: Technical - Engines and Boilers
Topic: Superheat coil
Replies: 3
Views: 4027

Re: Superheat coil

Bart, Edward Thanks for some good info. I was thinking that there might be some sort of ROT, granted it is complex but thought there might be a better method than WAG which is pretty much what I am doing. What I was going on was assuming 50% steam flow (125lbs per hr on 12hp) since most of the time ...
by Ralph B
Sat Nov 21, 2009 11:59 am
Forum: Technical - Engines and Boilers
Topic: Superheat coil
Replies: 3
Views: 4027

Superheat coil

Is there a ROT to determine how many square feet surface area is needed per (say) 100 degree (F not C) of superheat at 150psi steam pressure? This would be on a Roberts type watertube boiler, initially burning oil but will eventually burn coal. (coal is not readily available in my current location) ...
by Ralph B
Sat Nov 21, 2009 11:16 am
Forum: Technical - Engines and Boilers
Topic: To get a triple
Replies: 26
Views: 17827

Re: To get a triple

It's not so much tradition that interests me as the look...steeples don't grab my eye. From my limited understanding of uniflow engines they usually operate at a higher RPM than a counterflow engine. Granted I have not seen one in operation and only read a little about skinner engines in WW2 Liberty...
by Ralph B
Fri Nov 20, 2009 12:46 pm
Forum: Technical - Engines and Boilers
Topic: To get a triple
Replies: 26
Views: 17827

Re: To get a triple

Jack, I haven't seen any designs like you mention. Do you have any on paper? Probably the biggest reason I am interested in a triple is because...well, its a triple. If something similar was available that would be more practical in this size range I am all for it. Low RPM, 150PSI, and long legs. Ra...
by Ralph B
Wed Nov 18, 2009 7:08 am
Forum: Welcome
Topic: Welcome to the new forum - changes you need to know
Replies: 8
Views: 7709

Re: Welcome to the new forum - changes you need to know

I noticed when I signed up the language was listed as "British English". Does that mean we have to spell color with a U and aluminum with an added i?