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isenthalpic expansion is through PRDS or control valve where entropy changes. Whereas expansion through a steam turbine is isentropic one and enthalpy drops. isentropic expansion is more efficient process as compared to isenthalic one.
An isenthalpic process or isoenthalpic process is a process that proceeds without any change in enthalpy, H; or specific enthalpy, h.
Isentropic process
A process takes place from initiation to completion without an increase or decrease in the entropy
A process takes place from initiation to completion without an increase or decrease in the entropy
Practically there is no reversible isentropic process but to make the concept easier to be understood, you have to assume the following: * Ideal gas. * no friction losses. * Adiabatic preocess (no heat gain, no heat loss). API 520 part 1 Appendix B assumes that the vapor expansion through a nozzle or a pressure relief valve follows an isentropic path.
Explain the difference between the elements of the communication process and the communication process
Explain the difference between the elements of the communication process and the communication process
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"Adiabatic process" refers to processes that take place in a closed system with no heat interaction with it's surroundings. "Isentropic process" refers to processes that take place in a closed system with no heat interaction with the surroundings (adiabatic process) and internally reversible. This is, no internal generation of entropy, entropy stays constant, which is what is meant by "isentropic". We can also say, an isentropic process is one where entropy stays constant, and no heat interaction of the system with the surroundings takes place (adiabatic process). Or, an adiabatic process can be irreversible, or reversible (isentropic).