For a process to be isentropic as well as adiabatic i.e, heat transfer as well as entropy change are zero. The reaction must be reversible.
Isentropic process is one in which net entropy change of the process is zero which is achieved only if reaction is reversible in nature.
Whereas adiabatic means no heat transfer and process may be reversible or irreversible.
Thus, we can have isentropic process same as that of adiabatic only when the reaction is reversible.
Hope this helps you
Explain the answer Which of the following statements about an isentropic compressor is correct? An isentropic compressor has internal irreversibilities. An isentropic compressor has internal irreversibilities. An isentropic compressor requires less work input than the actual adiabatic compressor. An isentropic compressor is an ideal model of a compressor with a cooling jacket. The temperature of an ideal gas flowing through an isentropic compressor remains constant during the compression process.
An adiabatic compressor with an isentropic efficiency of 73% is used in a refrigeration unit to compress saturated R-134a vapor at 10° C to 1000 kPa Determine the required power of the compressor to compress 0.84 kg/s.
Explain the answer Which of the following statements about an isentropic compressor is correct? a An isentropic compressor has internal irreversibilities. An isentropic compressor has internal irreversibilities. b An isentropic compressor requires less work input than the actual adiabatic compressor. c An isentropic compressor is an ideal model of a compressor with a cooling jacket. d The temperature of an ideal gas flowing through an isentropic compressor remains constant during the compression process.
1 MPa Isentropic Efficiency of a Compressor Refrigerant-134a enters an adiabatic compressor as a saturated vapor at 100kPa at a rate of 0.7 m/min and exits at 1-MPa pressure. The isentropic efficiency of the compressor is 87%. R-134a Compressor Isentropic Compressor Work hs-h 100 kPa sat. vapor Actual Compressor Work Determine the refrigerant properties at the inlet and outlet for an isentropic process. Actual 2s entropic procEss Inlet state Determine the actual isentropic enthalpy from the efficiency. (Ans: 289.71 J/kg)...
Argon enters an adiabatic turbine at 800°C and 1.5 MPa at a rate of 120 kmol/hr and exits at 200 kPa. If the isentropic efficiency of the turbine is 90% determine: A) The actual power output B)The actual exit temperature C)Sgen
NGINEERI 13. A centrifugal compressor (not a piston type) compresses the air from the ambient condition at T, 300K and Pi 1 bar to P 10 bar following three different, standalone paths: isentropic, reversible isothermal, and an irreversible adiabatic process, respectively. (Note: These processes are not sequential processes; rather each of them is an independent, standalone p They all start at the same initial condition at state 1, but they end at different state 2.) The mass flow rate is...
11) An adiabatic compressor is to be powered by a direct-coupled adiabatic turbine that is also driving a generator. Steam enters the turbine at 10 MPa and 500 °C at a rate of 15 kgs and exits at 20 kPa. The turbine isentropic efficiency is 85% Air enters the compressor at 98 kPa and 230C at a rate of 10 kg/s, and exits the compressor at 1.2 MPa. The compressor efficiency is 75 %. Determine: a) the power requirement of...
In a steam power plant, water is pressurized in an adiabatic pump from 100kPa as a saturated liquid to 5 MPa at 150C. The pump is directly driven by an adiabatic steam turbine, which also powers a generator. Steam enters the steam turbine at 5 MPa and 450C and leaves as saturated vapor at 100kPa. Determine the net-work output of the pump-turbine-generator combination if the generator operates at 85% efficiency. (in kJ/kg) ) b) Determine the entropy generation for both...
Explain In the ideal Rankine cycle, compression in the pump is isentropic. True or False