Previous in Forum: SHAFT   Next in Forum: reheater spray
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
2 comments
Rate Comments: Nested
Anonymous Poster

Steam Turbine

11/11/2008 2:29 AM

We have an impulse, non-condensing steam turbine rated at 4000 bhp and 8250 rpm. We are planning to run this at 6800 rpm. What will be its horsepower? What empherical formula are we going to use?

redd, Philippines
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
user-deleted-1104
Power-User
Engineering Fields - Mechanical Engineering - New Member Technical Fields - Technical Writing - New Member

Join Date: May 2007
Location: Parallel 45
Posts: 226
Good Answers: 21
#1

Re: Steam Turbine

11/11/2008 5:20 AM

Take care about critical speed! Do not run close to critical speed!

__________________
 Look over to the next challenge
Reply
bhrescobar
Guru
Brazil - Member - New Member Engineering Fields - Mechanical Engineering - New Member Hobbies - RC Aircraft - New Member Hobbies - Target Shooting - New Member Hobbies - Automotive Performance - Hey there... interested in exchanging information about car performance? Hobbies - DIY Welding - New Member

Join Date: Jan 2007
Location: Porto Alegre - RS - Brazil 30deg01'39.73"S 51deg13'43.45"W
Posts: 831
Good Answers: 28
#2

Re: Steam Turbine

11/11/2008 5:48 AM

Aurel Mares is correct. This kind of machines are not linear. They are supposed to run constantly at or near the design speed. You may loose power quickly reducing speed, it simply will not work - not talking about inumerous other problems related to control, lubrication and refrigeration systems that may arise.

Maybe it's better to think anout changing the output equipment to run at the "100%" speed, or think about a reduction gearbox. I know it's expensive, but to loose a 4000 bhp steam turbine...

__________________
 Humm... suspicious you are...
Reply
Reply to Forum Thread
Have a Different Question?
2 comments

Previous in Forum: SHAFT   Next in Forum: reheater spray

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Mechanical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (70 right now)
Show Members
Advertisement