Prob.43. A system at 450 K receives 225 kJ/s of heat energy from a source of 1500 K and the temperatures of both the system and source remain constant during the heat transfer process. Draw the process on temperature- entropy diagram and determine - (i) Net change in entropy (ii) Available energy of heat source and system (iii) Decrease in available energy. Take atmospheric temperature as 300 K.

Prob.43. A system at 450 K receives 225 kJ/s of heat energy from a source of 1500 K and the temperatures of both the system and source remain constant during the heat transfer process. Draw the process on temperature- entropy diagram and determine - (i) Net change in entropy (ii) Available energy of heat source and system (iii) Decrease in available energy. Take atmospheric temperature as 300 K.

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: SANAE IV, a research station of The South African National Antarctic Programme (SANAP), is located…

A: Entropy is the measure of disorderness of any system. If the heat flow occurs through any system,…

Q: Q1) Can the entropy of a closed system decrease during a reversible process ? Write down what needs…

A: Entropy Entropy is the measure of disorder in the system i.e. more the disorder entropy increases.…

Q: A system of 100 kg mass undergoes a process in which its specific entropy increases from 0.3 kJ/kg k…

Q: Arrange the given systems in order from highest entropy to lowest entropy. liquid salt water at…

A: Since,entropy is defined as the measure of molecular disorder.Molecular disorder increases with…

Q: SANAE IV, a research station of The South African National Antarctic Programme (SANAP), is located…

A: Entropy is the measure of disorderness of any system. If heat flow occurs through any system, then…

Q: Draw the Pressure-Volume Diagram and Temperature-Entropy (T-S) Diagram when a carnot engine operates…

Q: 3.82 A Carnot engine operates between 37 Cand347 C. If the engine produces 620 kJ of work, the…

A: Entropy is the measure of disorderness of any system. If heat flow occurs through any system, then…

Q: 3. Consider that 1 kg of air has a decrease of internal energy of 21.7 kJ while its temperature is…

Q: A 85 g ice cube at 0°C is placed on a very large table at 20°C. You can assume that the temperature…

A: Givenice at 0oCT1=0oCm=85g=0.085kgT2=20oC

Q: In a gas apparatus, it was recorded that the expansion index was 1.26 and the molar mass of gas is…

Q: Determine change in specific entropy of the ideal gas from state 1 to state 2 in kJ/kg K

A: Given, State1: T1=300 K P1=100 kPAState 2: T2=600 K P2=500 kPAcp=1 kJ/kg-kR=cp-cvcv=0.7…

Q: Derive an expression for molar entropy of an equally spaced three-level system, where the spacing…

A: to derive an expression for the molar entropy of an equally spaced three level system with a…

Q: With your knowledge of the thermodynamic identity, derive a relationship for the heat capacities at…

Q: Consider a closed system going through an irreversible process that includes heat transfer with the…

A: Since the heat is transferred to the surroundings from the system therefore the entropy of the…

Q: Calculate the change of entropy (a) of a bath containing water, initially at 20 ◦ C, when it is…

Q: Making use of the fact that the entropy S(N, V, E) of a thermodynamic system is an extensive…

Q: A cycle receives 450 kJ of heat from a reservoir at 278 K, receives some work from the surroundings,…

Q: A system of 100 kg mass undergoes a process in which its specific entropy increases from 0.3 kJ/kg k…

Q: Consider a closed, isolated system that consists of two substances 1 and 2 that both have constant…

A: Given data: Cv1=1 J/KCv2=2 J/KT1,0=100 KT1,f=90 K Need to determine the minimum increase in the…

Q: 1 kg of air at 700 K and 1.1 MPa in a piston and cylinder devices undergoes a reversible and…

Q: Que: The entropy is defines as S(E,V) = k log r( E) Where k is a universal constant known as…

A: Entropy is associated with the randomness in a system. It is the measure of randomness in various…

Q: 18. 1.34 kg gas (R = 0.189 kJ/kg K, k = 1.288) in a Tank initially at 70°C is stirred by a paddle.…

A: Given data, m = 1.34 kg R = 0.189 kJ/kg.K k = 1.288 T1 = 70°C = 343 K Qrej = - 102 kJ dS = 0.66…

Q: 18. 1m3 of air is heated at constant pressure from 15 to 300C, and is then cooled at constant volume…

Q: An ice cube (mass 30 g) at 0°C is left sitting on the kitchen table, where it gradually melts. The…

A: given: mass of ice cube m=30gT2=250CT1=00C

Concept explainers

Laws of thermodynamics

Thermodynamics is a field of research, which needs the creation of absolute and ideal states and logical and practical examination of the actual conditions. By considering all the laws and theories of thermodynamics, the chemical reactions, the occurrence of processes, and physiological functions can be predicted with this field.

Question

100%

Prob.43. A system at 450 K receives 225 kJ/s of heat energy from a
source of 1500 K and the temperatures of both the system and source remain
constant during the heat transfer process. Draw the process on temperature-
entropy diagram and determine -
(i) Net change in entropy
(ii) Available energy of heat source and system
(iii) Decrease in available energy.
Take atmospheric temperature as 300 K.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps

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

0.6 kg/s of a gas passes through a unit of reversible steady flow. It rejects heat rate about 50 kJ/s and raises from 30m to 60m. If the velocities of the gas at inlet and outlet are 160 and 180 m/s respectively. Pressure of gas at inlet and outlet are 1.2 bar and 5.4 bar respectively. Moreover, at the entrance the internal energy is 920 kj/kg and specific volume is 1/5 m3/kg while at the exit the internal energy is 720 kj/kg and specific volume is 1/25 m3/kg Calculate the work done during the process. 1-change in enthalp2-he work done during the process3-The change in the mass
A quantity of an ideal gas in an isolated system expanded isothermally and reversibly at 400 K from a volume V1 to a volume V2. During the expansion, the gas absorbs 200 J of heat from the reservoir in contact with it. If the gas expanded freely V1 to a volume V2 at 400 K and absorbed 100 J of heat, what will be: (a) the entropy change of the gas; (b) the entropy change of the reservoir, and (c) the entropy change of the whole system. Answer: (0.50, 0, 0.50)
SANAE |V, a research station of The South African National Antarctic Programme (SANAP), is located on Vesleskarvet, Queen Maud Land. On a given day, 29674 J of heat leaks out of a building. The inside temperature is 22.8 °C, and the outside temperature is -20.2 °C. What is the increase in the entropy of the universe that this heat loss produces?
Note: Use values from the Steam Tables by Keenan, Keyes, Hill and Moore.
Water flowing at the rate of 1 kg/s through a system is heated using an electric heater such that the specific enthalpy of the water increases by 2.50 kJ/kg and the specific entropy increases by 0.007 kJ/kg.K. The power input to the electric heater is 2.50 kW. There is no other work or heat interaction between the system and the surroundings. Assuming an ambient temperature of 300 K, the irreversibility rate of the system is
a certain stable thermodynamic system is found to warm up when it is adiabatically expanded to lower pressures. show that for this system the entropy must increase upon isothermal compression
11. During a free expansion 2 kg air expands from 1 m' to 10m² volume in an insulated vessel. Determine entropy change of (a) the air (b) the surroundings (c) the universe.
Steam enters a turbine at 100 bars and 400°C. At the exit the pressure is 1.0 bar and the entropy has increased by 0.600 kJ/kg K under adiabatic conditions. The changes in kinetic and potential energies may be neglected. (a) Determine the work, in kJ/kg. For the same initial conditions and final pressure the turbine is now run without insulation. The entropy production due to internal irreversibilities is assumed to be the same as in part (a). However, the environment at 300 K is found to have an entropy change of +0.0800 kJ/(kg steam) · K. Also, the entropy change of the steam due to heat exchange with the environment has an absolute value of 0.0460 kJ/kg · K. (b) Determine the quality of the steam at the turbine outlet, and compare to the answer from part (a). Also, (c) determine the heat transfer to the environment, in kJ/kg steam, and (d) find the amount of work output of the turbine, in kJ/kg, and compare to part (a).