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- From: msorsini@eos.ncsu.edu (MARCO SALVADOR ORSINI)
- Newsgroups: sci.engr.mech
- Subject: Re: The Carnot Engine
- Message-ID: <1992Nov10.182851.13249@ncsu.edu>
- Date: 10 Nov 92 18:28:51 GMT
- References: <1992Nov9.212250.4358@spcvxb.spc.edu> <BxHGrF.CI6@mentor.cc.purdue.edu>
- Sender: news@ncsu.edu (USENET News System)
- Reply-To: msorsini@eos.ncsu.edu (MARCO SALVADOR ORSINI)
- Organization: North Carolina State University, Project Eos
- Lines: 42
- Originator: msorsini@c00569-1403br.eos.ncsu.edu
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- In article <BxHGrF.CI6@mentor.cc.purdue.edu>, mshar@mentor.cc.purdue.edu (Mike Mshar) writes:
- |>Newsgroups: sci.engr.mech
- |>Path: taco!rock!stanford.edu!agate!usenet.ins.cwru.edu!magnus.acs.ohio-state.edu!zaphod.mps.ohio-state.edu!sdd.hp.com!spool.mu.edu!news.nd.edu!mentor.cc.purdue.edu!mshar
- |>From: mshar@mentor.cc.purdue.edu (Mike Mshar)
- |>Subject: Re: The Carnot Engine
- |>Message-ID: <BxHGrF.CI6@mentor.cc.purdue.edu>
- |>Organization: Purdue University Computing Center
- |>References: <1992Nov9.212250.4358@spcvxb.spc.edu>
- |>Date: Mon, 9 Nov 92 23:35:38 EST
- |>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??
- |>
- As I seem to remember from my thermo. 1 class
- the Carnot efficiency is the best that you could do
- ----
- It is a good measure to compare the efficiencies of your system
- to.
-
- If I am wrong please don't flame me. I am only an undergraduate ME
-