Author Topic: Carnot Cycle (Heat Engine)  (Read 521270 times)

Wilfredo2009

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Re: Carnot Cycle (Heat Engine)
« Reply #15 on: May 13, 2009, 10:38:51 pm »
  When you based on the x and y axis is when the P decreases the V increases and when the V decreases the P increases.



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elder

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Re: Carnot Cycle (Heat Engine)
« Reply #16 on: May 16, 2009, 04:10:33 am »
Amazing flash animations.  This will certaily help my son visualize it.



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dannydesiliva

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work done in Carnot Cycle
« Reply #17 on: September 22, 2009, 02:18:08 pm »
The CARNOT CYCLE consists of the four cyclic processes namely:

Process (1-2) : Isothermal Expansion ( heat addition Q1 from hot thermal reservoir T1 and WORK OUTPUT is done )

Process (2-3) : Isentropic Expansion ( the system does WORK ie WORK OUTPUT by further expansion )

Process (3-4) : Isothermal compression ( work done by the surounding on the system where heat Q2 is rejected to the surrounding)

Process (4-1) : Isentropic compression ( further compression of the gas and tempreature reaches T2)

From the T-S diagram you get a better explainaition. The Work done on the system is during porcess (3-4) and process (4-1) and the Work done by the cycle is during process(1-2) and process (2-3).

The HEAT SUPPLIED in the cycle ie Q1 is PARTIALLY converted to WORK during process(1-2) and the thermal energy stored still in the gas is used to EXTRACT more WORK ISENTROPICALLY during process (2-3) by expansion (in ISENTROPIC process the system is thermally insulated so greater amount of the thermal energy can be utilised to produce WORK).

THus the HEAT SUPPLIED is PARTIALLY converted to WORK and the rest is rejected as heat Q2.

Thus there is some work done ON the system and some work done BY the system. The useful work is WORK DONE BY the system.

And as explained HEAT SUPPLIED = WORK DONE + HEAT REJECTED

Therefore, WORK DONE = HEAT SUPPLIED - HEAT REJECTED

W = Q1 - Q2

and in your equation 1 there is an alternative positve and negative sign for energy interaction in every process. It is well explained from the P-V diagram itself.

shafqatullah

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Re: Carnot Cycle (Heat Engine)
« Reply #18 on: November 09, 2010, 03:21:51 pm »
Related flash animations found on the web

Carnot Cycle
http://www.cs.sbcc.net/%7Ephysics/flash/heatengines/Carnot%20cycle.html


The 2 Stroke Engine
http://www.cs.sbcc.net/%7Ephysics/flash/heatengines/2stroke.html


The 4 Stroke Engine
http://www.cs.sbcc.net/%7Ephysics/flash/heatengines/4stroke.html


The Stirling Engine
http://www.cs.sbcc.net/%7Ephysics/flash/heatengines/stirling.html


I have a question..
Some heat out in cold body and after some time, the cold body move back. And pitson down. Why?

claudiahenry

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Re: Carnot Cycle (Heat Engine)
« Reply #19 on: December 11, 2010, 06:24:40 pm »
hi,
i am student master in physics
It’s good to see this information in your post, i was looking the same Good Work.-*-


lookang

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Re: Carnot Cycle (Heat Engine)
« Reply #20 on: January 07, 2011, 08:31:01 am »


http://www.geogebra.org/en/upload/files/english/tierney-fife/Engine4Stroke_Exported.html
Designed by Pam Buffington and Peter Tierney-Fife of EDC in ME (USA). This is a temporary page and may be removed at any time.
Peter Tierney-Fife, Created with GeoGebra

amazing what humans can do with tools
« Last Edit: January 07, 2011, 08:33:42 am by lookang »

Fu-Kwun Hwang

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Re: Carnot Cycle (Heat Engine)
« Reply #21 on: January 07, 2011, 09:19:06 am »
It is really amazing! Click

to view content from the above URL

lookang

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Re: Carnot Cycle (Heat Engine)
« Reply #22 on: January 07, 2011, 11:33:44 am »
ic how you do it.
i couldn't post the web applet because the applet code is more than 20000 characters, exceeding the limit set in the forum for per post character limit.

nice iframe technique!
to view content from the above URL

Thanks!
« Last Edit: January 07, 2011, 11:35:22 am by lookang »

KLutchenko

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Re: Carnot Cycle (Heat Engine)
« Reply #23 on: January 31, 2012, 07:25:59 am »

Hi,
Do you know how to build a "real" Carnot engine.
http://thecarnotengine.blogspot.com/2011/12/new-design.html

At the end you get a Curzon Alhborn Engine.

never done before.

Waiting for simulation.

Regards

Serge Klutchenko

koclup1580

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Re: Carnot Cycle (Heat Engine)
« Reply #24 on: December 29, 2012, 02:34:07 pm »
thank you. :o

diinxcom

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Re: Carnot Cycle (Heat Engine)
« Reply #25 on: December 14, 2014, 06:59:44 pm »
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Mark it first. I will read latter.