No, all thermodynamic processes are not polytropic.
What makes a process polytropic?
The term “polytropic” was originally coined to describe any reversible process on any open or closed system of gas or vapor which involves both heat and work transfer, such that a specified combination of properties were maintained constant throughout the process.
Is isothermal process polytropic?
Isothermal process are a subset of the polytropic. Polytropic encompass all other common processes and more. standard notation implying C is a constant, P the pressure and V the volume.
Are polytropic processes only for ideal gases?
Equations (7.82) and (7.83) are true for polytropic processes both in real and ideal gases, and Eqs. (7.84) to (7.88) are applicable only to ideal gases. The amount of heat added to or removed from a system undergoing a polytropic process is determined in the following way.
How do you know if something is polytropic?
Adiabatic and polytropic process are two important thermodynamic processes. The key difference between adiabatic and polytropic processes is that in adiabatic processes no heat transfer occurs whereas in polytropic processes heat transfer occurs.
Is isentropic the same as polytropic?
Isentropic process is one in which the entropy remains constant throughout. Polytropic process is one which obeys the law given below throughout the process.
What is polytropic process example?
This type of process is called a polytropic process. An example of a polytropic process is the expansion of the combustion gasses in the cylinder of a water-cooled reciprocating engine.
Is isentropic adiabatic?
In thermodynamics, an isentropic process is an idealized thermodynamic process that is both adiabatic and reversible. The work transfers of the system are frictionless, and there is no net transfer of heat or matter.
Which of the following is true for a polytropic process?
Which of the following is true for a polytropic process? Explanation: These are the properties of an adiabatic process. Explanation: It comes from the p1*(v1^n) = p2*(v2^n).
What is hyperbolic process?
Hyperbolic Process- it is the process where the gas is heated or expanded in such a way that the product of its pressure and volume remains constant. This process is governed by Boyle’s law.
Can a process be adiabatic and polytropic?
If the specific heat c of the polytropic change is zero, the polytropic process becomes an adiabatic one (dQ = 0). Also, if the specific heat of the polytrope is c = ±∞, the polytropic change becomes an isothermal one (dT = 0). Thus, polytropic processes are intermediate between isothermal and adiabatic processes.
What is the difference between isentropic and polytropic efficiency?
Polytropic efficiency is always higher than isentropic efficiency and makes their compressors look better. The higher the compression ratio the compressor has, the higher the difference between isentropic and polytropic efficiency, and polytropic will always be higher. , Match between Entropy and Energy.
Is work done in an isobaric process?
Polytropic efficiency is always higher than isentropic efficiency and makes their compressors look better. The higher the compression ratio the compressor has, the higher the difference between isentropic and polytropic efficiency, and polytropic will always be higher. , Match between Entropy and Energy.
Is pressure constant in a polytropic process?
Polytropic efficiency is always higher than isentropic efficiency and makes their compressors look better. The higher the compression ratio the compressor has, the higher the difference between isentropic and polytropic efficiency, and polytropic will always be higher. , Match between Entropy and Energy.
Is a polytropic process reversible?
Polytropic processes are internally reversible. Some examples are vapors and perfect gases in many non-flow processes, such as: n=0, results in P=constant i.e. isobaric process.
What is meant by isothermal process?
An isothermal process is a thermodynamic process in which the temperature of a system remains constant. The transfer of heat into or out of the system happens so slowly that thermal equilibrium is maintained.
References:
- https://www.thermopedia.com/content/1045/
- https://physics.stackexchange.com/questions/536435/difference-between-isothermal-and-polytropic
- http://twt.mpei.ac.ru/TTHB/2/KiSyShe/eng/Chapter7/7-5-Polytropic-processes.html
- https://www.differencebetween.com/difference-between-adiabatic-and-vs-polytropic/
- https://www.crazyengineers.com/threads/difference-between-isentropic-process-and-polytropic-process.62146
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