[Steam-engine] heating surface

[Dan Donaldson]

The area of the front tube sheet should be included as well.


-----Original Message-----
From: steam-engine-bounces at lists.stationary-engine.com
[mailto:steam-engine-bounces at lists.stationary-engine.com] On Behalf Of
Robert Smith
Sent: Monday, July 24, 2006 2:06 PM
To: Steam-engine mailing list
Subject: Re: [Steam-engine] heating surface

Andre ---

This is what you should get.

Pi = 3.141592654

Diameter of tube = 2.000

Circumference of tube = Pi * D

Area of tube = Circumference * length

Thus:

Heating surface = Pi * D * L =  3.14159 * 2.0 * 45 = 282.743  "Sq or
1.963 Ft Sq.

Exactly as you wrote,  Congratulations!!!!!!!!!!!!!!!!

Note, times the total number of tubes plus the effective heating area of
your fire box gives the
total heating area of your boiler which can be used to estimate the
steaming horsepower of your boiler.

    Best wishes and happy steaming,

        Bob Smith


Andre' Blanchard wrote:
> 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.
>
>
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