In a steady-state process air enters an insulated compressor at 320 K and 100 kPa and exits at 418 kPa. If the isentropic compressor efficiency is 80% calculate the rate of entropy generation in kW/K using variable specific heats approach per unit mass flow rate (1 kg/s) of air.

In a steady-state process air enters an insulated compressor at 320 K and 100 kPa and exits at 418 kPa. If the isentropic compressor efficiency is 80% calculate the rate of entropy generation in kW/K using variable specific heats approach per unit mass flow rate (1 kg/s) of air.

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

See similar textbooks

Related questions

Q: A dry-steam well is characterized by a closed-in pressure of P1 2500 kPa and saturated vapor. The…

Q: P₁ = 1.6 MPa T₁=350°C m = 16 kg/s Q=? Turbine W=9 MW 2+1₂=30°C sat. vapor

Q: Air, as an ideal gas, enters a steady-state adiabatic diffuser at 273 K and 100 kPa, with a velocity…

Q: 6. Air steadily goes through an adiabatic compressor from 100 kPa and 300 K to 0.9 MPa and 600 K…

A: Here we will use the pressure temperature relationship for isentropic compression to get the…

Q: a. The compressor power (kW). ɔ. The mass flow rate of the water (kg/s). c. The nozzle exit velocity…

A: We will use simple energy conservation

Q: A mole of an ideal gas is compressed isothermally but irreversibly at 110 ⁰C from a pressure of 2…

Q: There are required 1902.3 kW of compressor power to handle air adiabatically from 1 atm, 26.7°C to…

A: Given data:

Q: In a centrifugal compressor, the atmospheric air enters at 28°C and leaves at 110°C and 2 bar.…

A: The answer is provided below.

Q: Air at 200 kPa, 52°C, and a velocity of 305 m/s enters an insulated duct of varying cross-sectional…

Q: Entropy Generation and Carnot Performance: Consider the diagram below of a heat pump, engine 1, that…

Q: Air enters a compressor at T1=300 K and P1=100 kPa, then compressed to 1500 kPa. The isentropic…

A: Write the given data with suitable variables: T1=300 KP1=100 kPaP2=1500 kPaη=85 %

Q: Air is compressed steadily by a reversible compressor from an inlet state of 100kPa and 300K to an…

A: (a)First we have to find the compressor work pressure with isentropic compression with k=1.4

Q: Consider an adiabatic, reversible compressor that takes in air at 100 kPa, 300 K and compresses it…

Q: A gas turbine draws in air at 98kPa and 27°C. It is adiabatically compressed to 600kPa in a…

A: “Since you have posted a question with multiple sub-parts, we will provide the solution only to the…

Q: nd the rate of entropy production and determine if the cycle operates irreversibly, reverisbly, or…

A: ηcarnot=1-TLTH =1-4001200ηcarnot=0.667=66.7% a). Q˙H=600KW , Q˙C=400KW W˙NET =200KW…

Q: A compressor (300 W) increases air pressure from atmospheric to 2,000 kPa. As the compressor…

A: as given that the outer casing is heated so the process is not adiabatic.

Q: Saturated vapor water at 100 kPa enters an isentropic compressor and exits at 2 MPa. Note that…

A: Given:At compressor inlet:Phase: saturated vaporAt compressor outlet:Compressor is isentropic i.e.…

Q: Considering now the real case, where the turbine and feed pump are not isentropic, and the feed pump…

Q: A turbojet aircraft flies with a velocity of 260 m/s in through air at -40°C and 35 kPa. The…

A: First, we need to convert the given temperature from Celsius to Kelvin. The formula to convert…

Q: Can saturated water vapor at 200 kPa be condensed to a saturated liquid in an isobaric, closed…

A: On using a steam table, the properties of saturated water vapor at 200 kPa are given as, The heat…

Question

In a steady-state process air enters an insulated compressor at 320 K and 100 kPa and exits
at 418 kPa. If the isentropic compressor efficiency is 80% calculate the rate of entropy
generation in kW/K using variable specific heats approach per unit mass flow rate (1 kg/s)
of air.
a. 0.043
O b. 0.051
c. 0.059
d. 0.064
e. 0.071
f. 0.083
g. 0.089

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

The following two claims are made by salesmen about newly invented 2-phase adiabatic compressors. Salesman A: "It can compress steam with a quality of 0.1 from 100 kPa to saturated liquid at 400 kPa." Salesman B: "It can compress steam with a quality of 0.1 from 100 kPa to saturated liquid at 1000 kPa." a. Show both claims on a T-S (temperature vs. specific entropy) diagram. b. Which claim or claims are possible? c. Which claim or claims are impossible?
A portion of a turbojet engine is shown in the figure below. Air flowing at 25 kg/s at 240 K and 80 kPa (State 1) enters an adiabatic and reversible diffuser with a velocity of 250 m/s. It leaves the diffuser with negligible velocity (State 2). As a result, you may assume the velocity of the air leaving the diffuser is small compared to the velocity of air entering the diffuser. The air is then compressed in an adiabatic compressor with an isentropic efficiency of 80%. The compressor requires 7 MW of power (work input). You may assume air is an ideal gas with constant specific heats. Use the correct specific heats in the table below in analyzing the different processes. Air Properties Cp Cy R kJ/kgK kJ/kgK kJ/kgK Diffuser (Process 1 to 2) Compressor (Process 2 to 3) 1.003 0.716 0.287 1.014 0.727 0.287 1. Calculate the pressure of the air in kPa leaving the compressor (State 3).
4) Hot combustion gases enter the nozzle of a turbojet engine at 350 kPa, 1007 °C and 95 m/s, and they exit at a pressure 100 kPa. Assuming an isentropic efficiency of 95 percent and treating the combustion gases as air determind a- The exit velocity b- The exit temperature
Required information Problem 07.021 - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. During the isothermal heat addition process of a Carnot cycle, 700 kJ of heat is added to the working fluid from a source at 400°C. Problem 07.021.c - Total entropy change for the process Determine the total entropy change for the process. The total entropy change for the process is KJ/K.
B5
pls answer both questions thankyou
2. Air is compressed steadily by an adiabatic compressor from 100kPa, 27°C to 400kPa and 200°C and the power input of the compressor neglect the changes in kinetic and potential energies. Determine; a. The mass flow rate of air through the compressor, in kg/s. b. The isentropic efficiency of the compressor, in K. c. The rate of entropy generation of air during this 400kPa 200°C is 5kW. Assume constant specific heats, and Air Compressor 5kW process, in kW/K. 100kPa 27°C