500# steam vs 15 #
500# steam vs 15 #
(OP)
Alright this is a dumb newbie question, but I never learned anything about boilers in school. I've just been asked to evaluate our heat tracing at one of our sites. There we generate steam with 2 500 hp Kewanne units. I talked to an engineer today at our maintenance contractor about all of our problems and a few options. He mentioned these units produce 500# steam, but on the units themselves it rates them at 15#. What is the difference and what does it mean to boiler performance?
I'm sure I'll have a lot of these questions as I go along, but I'm learning.
Thanks in advance
Ian Miller
I'm sure I'll have a lot of these questions as I go along, but I'm learning.
Thanks in advance
Ian Miller





RE: 500# steam vs 15 #
A good reference Book:
"BOILER OPERATIOR'A BUIDE" BY ANTHONY L. KOHAN, fourth Edition, ISBN #0-07-036574-1.
Leonard@thill.biz
www.thill.biZ
RE: 500# steam vs 15 #
If you are not clear with your problem (and for some basics) this link will help you and it is free.
http://www.armstrong.be/pdf/N_101.pdf
And these two are not free (see the warning in the first page of these two documents)
http://www.spiraxsarco.com/us/assets/uploads/PDFs/HookUp.pdf
http://www.spiraxsarco.com/us/assets/uploads/PDFs/Steam.pdf
These links will provide you with every sort of details you required.
RE: 500# steam vs 15 #
RE: 500# steam vs 15 #
If you make 500 psig steam, you need to add more energy to make a pound of 500 psig steam versus 15 psig steam so your steam production will be decreased. Plus the heat transfer in the boiler will be reduced (since 500 psig steam is hotter than 15 psig steam) so again less steam production.
Still, if the boilers are actually designed to make 500 psig steam, it's odd they rate them as 15 psig. I suspect the 2500 hp are boiler Hp (which I've never worked with) and again, this might be tied back into the 15 psig steam energy content.
I'd just find the name of your local rep and ask the question. Be interested in hearing their answer myself.
RE: 500# steam vs 15 #