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Somebody claims to have developed a new reversible heat-engine cycle that has higher theoretical efficiency than the carnot cycle operating between the same temperature limits how do you evaluate?
Wiki User
∙ 14y ago
Sorry this is just not possible as it would violate many of the basic rules of thermodynamics.
Hmm,I have a different view on this.There may be a possibility.When heat is converted to work or rather energy ,E=mc2 definitely comes in play.Then there is a particular(although small) mass change taking place.Thus if a engine on calculation shows that efficiency less than 100% it neve takes into account Quantum changes.These changes in course of a infinite number of times convert into significant energy. Thus at some point of time the efiiciency may go past 100% but only for a fraction of a second.Thus theoritically a deep look at it may say that the founder although joking may not be wrong.
Wiki User
∙ 14y ago
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Is it possible to attain an efficiency of 100 percent in heat engines.explain?
A heat engine operating between 2 temperatures, Thot, the heat source, and Tcold, the heat sink, can be 100% efficient only when Tcold is absolute zero. Carnot worked out the equation to determine the best possible efficiency of a heat engine designed to produce mechanical energy ("Work") from heat energy: Wout = (Heat Energy in at Thot) x (Thot - Tcold)/(Thot) Note that (Thot - Tcold)/(Thot) is 1 only if Tcold is zero. In every other case, the ratio is less than 1. The amount of heat energy discharged to the heat sink at Tcold is: (Heat Energy in at Thot) - Wout. (You can work this out from the equation. It reflects the law of conservation of energy. ) This just means that all the heat energy absorbed by the heat engine is converted into either mechanical energy or heat energy at a lower temperature. No energy is lost and no extra energy is created. "Efficiency" according to Carnot's equation tells us the best possible ratio between these two energy outputs that nature allows a heat engine to achieve. You can think of a heat engine as a device that splits an amount of heat energy at some high temperature into mechanical energy and heat energy at some lower temperature. Kind Regards, Colin Dunstan Author: "cyclic heat to work conversion systems"
