[Steam-engine] heating surface

[Andre' Blanchard]

Yes it should be the hot gas side.
But since the OP did not state fire tube or water tube I just gave the 
basic formula. :)
He did say "tube" so that would mean the 2" was an OD assuming the nominal 
dimension.

Assumptions are the mother of all *******. :)


At 12:49 PM 7/24/2006, you wrote:
>Dan,
>
>It is my understanding that the heating surface is that area that is 
>contact with the heat.  I agreed with your math as opposed to 
>Andre's.  According to Andre's, it would be in the ball-park, just long.
>
>Lawrence
>
>-----Original Message-----
>From: steam-engine-bounces at lists.stationary-engine.com
>[mailto:steam-engine-bounces at lists.stationary-engine.com]On Behalf Of
>Dan Donaldson
>Sent: Monday, July 24, 2006 12:16 PM
>To: 'Steam-engine mailing list'
>Subject: RE: [Steam-engine] heating surface
>
>
>Is the heating surface the inside or outside of the pipe?  Now that I think
>about it the outside of the pipe makes more since.
>
>
>-----Original Message-----
>From: steam-engine-bounces at lists.stationary-engine.com
>[mailto:steam-engine-bounces at lists.stationary-engine.com] On Behalf Of
>Andre' Blanchard
>Sent: Monday, July 24, 2006 12:47 PM
>To: Steam-engine mailing list
>Subject: Re: [Steam-engine] heating surface
>
>2" * Pi * 45"
>2 * 3.142 * 45 = 282.8 sq. in.
>282.8 / 144 = 1.96 sq. ft.
>
>
>At 11:22 AM 7/24/2006, you wrote:
> >I most likely should have payed closer attention in math class, but no one
> >ever taught it as it applies to steam engines.  (what a great
> >idea!)  anyhow does anyone care to educate me on the heating surface of a
> >tube?  It is 2" in diameter and 45 inches long.  I keep getting
> >interesting answers.... but am not sure they are right.
> >
> >   thanks
>
>__________
>Andre' B.  Clear Lake, Wi.

__________
Andre' B.  Clear Lake, Wi.