Somebody claims to have developed a new reversible heat-engine cycle that has th same theorotical efficiency as the Carnot Cycle operating between the same temperature limits. is this a reasonable claim? explain.
i need answer now... can u.. tnx
No. "You can't break even" and "you can't get out of the game" come to mind.
Google "acoustic refrigeration". There have been some new developments in this area using loudspeakers in place of mechanical compressors to compress helium for a new version of the Sterling Cycle process.
Perhaps that is what you heard off... Don't know about anything being fully reversible though... That would violate the laws of thermodynamics.
Beachcomber
This question sure smells like a homework problem. It is reasonable the same way as a Carnot engine is reasonable. If I explained, you would not learn although you might get an unfair competitive edge when it comes to grading.
Bill
Homework??
The Ericson cycle is theoretically equivalent to the Carnot. But it hasn't been built with any degree of success. It requires that compression of the fluid takes place at a constant temperature (i.e. heat is removed from the gas *as* it is compressed), and similarly, expanded at constant temperature (i.e. heat added continuously as the gas passes through the turbine).
But of course to have 'constant temperature' means you must have a heat transfer rate that is very large (i.e. incredible heat transfer coefficients, or incredibly large heat transfer surface).
daestrom
PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.