Search found 1587 matches

by fredrosse
Tue Jun 25, 2019 4:12 pm
Forum: Technical - Engines and Boilers
Topic: Oil burner consumption
Replies: 5
Views: 199

Re: Oil burner consumption

The FAQ section of this forum has details of the power plant end of steamboating. Estimating the power needed according to hull size displacement and cruising speed, figuring the power available from steam engines, the engine's steam consumption, the sizing and performance of boilers, and their fuel...
by fredrosse
Thu Jun 20, 2019 6:43 am
Forum: Technical - Engines and Boilers
Topic: Cladding Problem - Need Advice
Replies: 5
Views: 204

Re: Cladding Problem - Need Advice

If you have exhaust at atmospheric pressure, then the exhaust will be wet steam at almost exactly 100C (212F). Virtually impossible to be any higher temperature unless the exhaust is somehow pressurized. No need for insulation rated for any higher temperature. If you condense with vacuum exhaust, th...
by fredrosse
Fri Jun 14, 2019 12:10 pm
Forum: Technical - Engines and Boilers
Topic: Increasing a VFT boilers output by increasing the firebox size
Replies: 17
Views: 610

Re: Increasing a VFT boilers output by increasing the firebox size

"......creating a larger then needed condenser and plugging some tubes to restrict cooling water allowing the ideal condensate return temp. Thoughts??" ANS: Plugging some tubes will only reduce the intended function of the condenser, and result in higher engine exhaust pressure. If the condenser pro...
by fredrosse
Wed Jun 12, 2019 1:55 am
Forum: Technical - Engines and Boilers
Topic: Increasing a VFT boilers output by increasing the firebox size
Replies: 17
Views: 610

Re: Increasing a VFT boilers output by increasing the firebox size

"Condensate temp should be as low as possible to provide maxiumum vaccum, so adequate cooling water should flow in the condenser and a vac pump to allow this." ANS: A better way to express this: "Engine exhaust temp/pressure should be as low as possible to provide maximum engine efficiency, so adequ...
by fredrosse
Sat Jun 08, 2019 10:51 am
Forum: Technical - Engines and Boilers
Topic: Increasing a VFT boilers output by increasing the firebox size
Replies: 17
Views: 610

Re: Increasing a VFT boilers output by increasing the firebox size

This is a rather long and boring presentation, so most steamboaters should skip to the next entry on this thread. In terms of thermodynamics, the low end temperature of the cycle is very relevant to plant efficiency. Fundamentally steam plants should have their low end temperature (exhaust condensin...
by fredrosse
Thu Jun 06, 2019 3:12 pm
Forum: Technical - Engines and Boilers
Topic: Increasing a VFT boilers output by increasing the firebox size
Replies: 17
Views: 610

Re: Increasing a VFT boilers output by increasing the firebox size

In boiler jargon, an economizer is a feedwater heating device that gets its heat source from the flue gas that has already passed through the main boiler evaporating (boiling) section, and captures heat that would otherwise pass up the stack and be wasted. Hence the term "economizer". Putting a coil...
by fredrosse
Thu Jun 06, 2019 1:38 am
Forum: Rally Reports
Topic: First Steamboat Meet - Noximixon
Replies: 0
Views: 242

First Steamboat Meet - Noximixon

2nd Saturday of June, that would be 08 June 2019, is that correct Don?
by fredrosse
Fri May 31, 2019 2:16 pm
Forum: Technical - non Engines and Boilers
Topic: Propellor tip clearance
Replies: 8
Views: 483

Re: Propellor tip clearance

I agree with Ron, the rules for prop clearance are generally based on power levels that are far beyond what we steamboaters have, so violating the 15% clearance minimum rule is most probably OK.
by fredrosse
Fri May 31, 2019 2:12 pm
Forum: General Steamboat stuff
Topic: Searching for my Steamboat's History
Replies: 3
Views: 173

Re: Searching for my Steamboat's History

Looks like a wonderful conversion. On our lake (Noximixon in PA) I have been looking at Thistles for this exact purpose for years, great hull for a light weight steamer.

Best wishes to get steaming soon.
by fredrosse
Fri May 31, 2019 2:03 pm
Forum: Technical - Engines and Boilers
Topic: Fuel oil preferences
Replies: 5
Views: 274

Re: Fuel oil preferences

Liquid petroleum fuel has three basic forms available to steamboaters: 1. Gasoline, or Petrol. The low temperature of the flash point for this fuel generally make it to be considered too dangerous for our boating needs. 2. Kerosene (USA Name), or Paraffin Fuel (UK) is probably the best thing to use,...