use perrys chem eng handbook in answering A piston/cylinder device operating in a cycle with steam as the working fluid executes thefollowing steps:Saturated vapor steam at 300 psia is heated at constant pressure to 900 degree Fahrenheit• It then expands, reversibly and adiabatically, to the initial temperature of 417.35 degreeFahrenheit• Finally, the steam is compressed in a mechanically reversible, isothermal process to theinitial stateWhat is the thermal efficiency of the cycle?

Answered: A piston/cylinder device operating in a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A Carnot power cycle in a piston-cylinder device executes the isothermal compression at 300 K from 90 kPa to 120 kPa when its thermal efficiency is 60%. Please answer the following questions. b. For the isothermal compression process determine the work per unit mass and the heat transported, in kJ/kg. c. Determine the temperature of the isothermal expansion, in K.
Refrigerant-134a at a rate of 0.08 kg/s enters the compressor of a refrigerator as superheated vapor at 0.18 MPa and 0 ℃ and leaves at 0.9 MPa and 80 ℃. The refrigerant is cooled in the condenser to 31.3 ℃ and 0.8 MPa and it is throttled to 0.18 MPa. Disregarding any heat transfer and pressure drops in the connecting lines between the components, Determine the adiabatic efficiency of the compressor
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Refrigerant-134a at a rate of 0.08 kg/s enters the compressor of a refrigerator as superheated vapor at 0.18 MPa and 0 ℃ and leaves at 0.9 MPa and 80 ℃. The refrigerant is cooled in the condenser to 31.3 ℃ and 0.8 MPa and it is throttled to 0.18 MPa. Disregarding any heat transfer and pressure drops in the connecting lines between the components, Determine the coefficient of performance of the refrigerator.
Shown below is P-V diagram for a reversible cycle enclosed by 4 reversible process curves. The curve 1-2 and the curve 3-4 are reversible isothermal processes, and the curve 2-3 and the curve 1-4 are reversible adiabatic processes. If the cycle direction is counter clockwise, answer the question below. Select curve(s) which represent process(es) having heat interactions?____ A. curve 1-2 B. curve 2-3 C. curve 1-4 D. curve 3-4
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A carnot cycle is conducted using air contained in a cylinder -piston configuration. Initially, the system contains air at 25 degC, 100 kPa and 0.01 m3. You may designate this as state 1. The system is first compressed isothermally until the volume is 0.002m3. From that point, the system undergoes a polytropic compression process with exponent y=1.4 until the volume further reduces to 0.001m3. After that the system undergoes an isothermal expansion process afterwhich, the system is subjected to an adiabatic expansion process until the system reaches the initial state completing a cycle.Determine the maximum P and T in the cycle, the net work of the cycle, heat input, heat rejected, the cycle efficiency (in %) and the mean effective pressure.
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A spring-conditioned cylinder-piston device contains 0.25kg of air and operates under the following thermodynamic cycle:1 -> 2: In state 1, P_1 = 200kPa and V_1 = 0.25m ^ 3. The compressed spring is released and the air is compressed, until the spring no longer stores energy and the piston simply rests on the stops: P_2 = 300kPa and V_2 = 0.10m ^ 3.2 -> 3 After compression the heat is removed and the pressure drops to 100kPa in state 3.3 -> 1: Heat is added, the spring is compressed, and the air expands to state 1. a) Make a diagram of the process and trajectories.b) Determine the air temperature in the 3 states.c) Calculate the work from state 1 to 2.d) Calculate the work from state 3 to 1.e) Calculate the total work of the cycle and who performs it.

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