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Re: [BRHSlist] Steam engine questions

To: BRHSlist@yahoogroups.com
Subject: Re: [BRHSlist] Steam engine questions
From: "John D. Mitchell, Jr." <cbqrr47@y...>
Date: Sat, 9 Mar 2002 13:10:15 -0800 (PST)
In-reply-to: <F224VX1yOZFQDLBBHSN0000eeb0@h...>
Yes, the 6319 did have a Worthington BL feedwater
heater. The basic difference in the two types, was
that the Elesco used a "closed" system where the
exhaust steam and feedwater never came in direct
contact. The "tank" you refer to, is actually a
"bundle" heat exchanger. The Worthington on the other
hand was an "open" system where the exhaust steam and
feedwater mixed. It had a little better thermal
efficiency and saved more water, but had the drawback
that cylinder oil had to be removed from the exhaust
steam before using it in the feedwater heater.
John D. Mitchell, Jr.
--- William Allen <tarfu64@h...> wrote:
> Hi Bob,
> 
> That tank is indeed an Elesco Feedwater Heater. It
> used exhaust steam from 
> the cylinders to preheat the water from the tender
> before it was pumped into 
> the boiler. A rather creative way to get a little
> more work out of the 
> steam. If you look at the picture of 6313, directly
> above the 4th driver 
> and ahead of the air pump, there is the feedwater
> pump that pumps the water 
> from the tender, through the heater and into the
> boiler.
> 
> I think that 6319 also has a feedwater heater but if
> it has one it is 
> mounted on the left side of the engine and is of the
> Worthington BL type. 
> It performed the same function but was of a
> different design that 
> incorporated the pump and heater into one unit. I
> think this is the case as 
> the air pump has been moved to the right side (the
> Worthington BL was a 
> rather large and weighty unit so often the air pumps
> were relocated to help 
> balance the engine) and I think I can see the
> exhaust steam pipes coming 
> from the front of the cylinders which would carry
> the exhaust steam to the 
> heater. However, I may be reading more into the
> shadows than is actually 
> there.
> 
> Hope this has been helpful,
> 
> Bill Allen
> 
> 
> >From: "Bob Weber" <eng95@a...>
> >Reply-To: BRHSlist@yahoogroups.com
> >To: "BRHS" <BRHSlist@yahoogroups.com>
> >Subject: [BRHSlist] Steam engine questions
> >Date: Fri, 8 Mar 2002 23:41:22 -0800
> >
> >Referring to the picture of a CB&Q 2-10-4 #6313 at 
>
>http://gelwood.railfan.net/other/cbq/cbq-6313abn.jpg
> >I have two questions.
> >1. There is a tank in front of the short exhaust
> stack that I remember 
> >would usually spout a stream of steam directed into
> the exhaust. Not all 
> >M4's had the this tank as you can see in #6319 at
>
>http://www.railfan.net/cgi-bin/thumb/abprphoto.cgi?/railpix/ABPR/august01/08-20-01/CBXQ6319SteamatCentraliaILBLXDRColl.jpg
> >What was the purpose of the tank?
> >
> >2. What was the meaning of the colored flags up at
> the top-front of the 
> >engines? I remember seeing white and green. Were
> there other colors and 
> >what did they mean?
> >
> >Regards,
> >Bob
> >
> >
> >[Non-text portions of this message have been
> removed]
> >
> 
> 
> 
> 
>
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