home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!ogicse!emory!sol.ctr.columbia.edu!spool.mu.edu!news.nd.edu!mentor.cc.purdue.edu!mshar
- From: mshar@mentor.cc.purdue.edu (Mike Mshar)
- Newsgroups: sci.engr.mech
- Subject: Re: The Carnot Engine
- Message-ID: <BxHGrF.CI6@mentor.cc.purdue.edu>
- Date: 10 Nov 92 04:35:38 GMT
- Article-I.D.: mentor.BxHGrF.CI6
- References: <1992Nov9.212250.4358@spcvxb.spc.edu>
- Organization: Purdue University Computing Center
- Lines: 30
-
- In article <1992Nov9.212250.4358@spcvxb.spc.edu> 4chua_l@spcvxb.spc.edu writes:
- >IN MY THERMODYNAMICS CLASS SOMEBODY ASKED THE QUESTION: THE CARNOT ENGINE
- >IS AN IDEAL ENGINE WHOSE THERMAL EFFICIENCY IS 100% IS THERE AN ENGINE THAT
- >EXIST IN TODAY'S WORLD THAT CLOSELY RESEMBLES THAT OF THE CARNOT
- >ENGINE'S THERMAL EFFICIENCY?
- > PLEASE HELP THIS STRUGGLING PHYSICS MAJOR OUT
- > TTTTTTHHHHHHAAANNKKKKK YYYOOOUUU!!!!
- > THE PERTURB PSEUDOPHYSICIST
-
- Correct me if I am wrong, but a Carnot engine can not be 100% efficient. I
- seem to remember that the equation for effieciency of a Carnot engine can
- be expressed as
-
- Efficiency = 1-(Cold Temperature/Hot Temperature)
-
- So, unless operating at absolute zero, there is no way a Carnot engine can
- be 100% efficient. Am I right on this, or am I thinking of something
- different??
-
- Anyway, I have heard that the the latest model heat pumps for homes and
- businesses come very close to the ideal Carnot efficiency. Anybody else
- hear this too??
-
-
-
- --
- | Michael G. Mshar | My Life-Long Goal: To keep common sense |
- | mmshar@mn.ecn.purdue.edu | alive and keep the idiots from taking over.|
- | mshar@mentor.cc.purdue.edu | \\President, Nice Guys Anonymous// |
- |____>>> United States Steel, Mechanical Engineer, Technical Services <<<____|
-