Water is the working fluid in a Carnot vapor power cycle. Saturate liquid enters the boiler at a pressure of 10 MPa, and saturated vapor enters the turbine. The condenser pressure is 6 kPa. Determine (i) the thermal efficiency, (ii) the back work ratio, (iii) the heat transfer to the working fluid in the boiler, and (iv) the heat transfer from the working fluid in the condenser. In part B of the problem, irreversibilities in the adiabatic expansion and compression processes cannot be neglected. If the states at the turbine and pump inlet remain unchanged, repeat parts (i-iv) for the modified Carnot cycle with NT= 0.80 and Np = 0.70. Finally, calculate the rate of entropy generation in modified Carnot cycle having irreversibilities.

Water is the working fluid in a Carnot vapor power cycle. Saturate liquid enters the boiler at a pressure of 10 MPa, and saturated vapor enters the turbine. The condenser pressure is 6 kPa. Determine (i) the thermal efficiency, (ii) the back work ratio, (iii) the heat transfer to the working fluid in the boiler, and (iv) the heat transfer from the working fluid in the condenser. In part B of the problem, irreversibilities in the adiabatic expansion and compression processes cannot be neglected. If the states at the turbine and pump inlet remain unchanged, repeat parts (i-iv) for the modified Carnot cycle with NT= 0.80 and Np = 0.70. Finally, calculate the rate of entropy generation in modified Carnot cycle having irreversibilities.

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: Find the efficiency of Brayton cycle with, (a) Pressure ratio = 6 (b) Pressure ratio = 8 (c)…

Q: 4n ide al Piesel cycle with alx as The working fluid has a Lompressia Lut off ratic of 2. At the…

A: "Since you have posted a question with multiple sub parts we will solve first three subpart for you…

Q: rom a hot reser ir is - 4 kJ/K,

Q: A typical automobile engine Hot and cold reservoir temperature 515 K, 300 K Heat loss of cold…

A: First law of thermodynamics states that the energy can neither be created nor destroyed but can be…

Q: Steam at 4 Mpa and 300oC enters a turbine and expands isentropically to 100 Kpa. Find the turbine…

Q: A typical automobile engine Hot and cold reservoir temperature 580 K, 390 K Heat loss of cold…

A: As per the given data the answer we are getting, are not feasible because actual efficiency can not…

Q: ry saturated steam

Q: make calculations for the he

Q: A turbine receives steam at 8.8 MPa, 510OC and exhaust it at 0.175 MPa. (a) For the ideal Rankine,…

A: The steam turbine works in the Rankine cycle. An ideal Rankine cycle is the one where the pump and…

Q: For Carnot Cycle: Thermal efficiency= 1

A: Draw the T-s diagram of the Carnot cycle.

Q: What is Carnot cycle? What are its two limitations? Draw it on PV and TS diagram.

A: Carnot cycle It is the ideal cycle against which all the external combustion heat engines are…

Q: Given the temperature of the sink, the change in entropy and the effective work done by Carnot…

Q: The Clausius inequality holds good for Aany process Bany cycle Conly reversible process

A: Given:Clausius inequality shows feasibility of the cycle,

Q: If 4000J of heat tansfer occures from a hot reservoir at temper ature equal to 600 K to a cold…

Q: . A Carnot engine is operating between 780 K and 310 K produces 60 KJ of work. 6.1 Determine the…

A: GivenTh=780kTl=310Kwork W=60kj=60000j

Q: Two Carnot engines work in series between the sources and sink temperatures of 600 K and 400 K…

A: Data given- Source temprature T1 = 600 K Sink temprature T3 = 400 K Wordone of both engine is…

Q: Find the total heat transfer (in kJ)in reversible cycle, if processes 1-2, 2-3 and 3-1 are carried…

Q: A heat exchanger as shown in the below figure is used for an air conditioning system through a…

Q: A Carnot engine operates between 37 Cand347C. If the engine produces 620 kJ of work, the entropy…

A: The heat supplied can be determined as,

Q: 4. Steam turbine with 80% stage efficiency receives steam at 7MPA and 550 deg C and exhausts as…

A: Find the quality after turbine expansion.

Q: The maximum temperature in a diesel engine is 2700K with a compression ratio of 30. The initial…

Q: The initial state enthalpy for water (h3(kJ/kg)) is equal to: The final state enthalpy for water…

A: For solution refer below images.

Q: A heat exchanger, shown below, is used to cool an air flow from 550 K to 250 K, both states at 1…

Q: Compute the change of entropy of the engine system accompanying the heat added process and the heat…

Q: The initial state enthalpy for air (h,(kJ/kg)) is equal to: The final state enthalpy for air…

A: Given Data State 1: Air, 550 K,1 MPa State 2: Air, 250 K,1 MPa State 3:Water,30°C,0.1 MPa State…

Q: Given 0.603MW electrical power supplied to a boiler when the temperature of the entering water is 20…

A: The inlet and exit temperature respectively are 20 degree Celsius and 89 degree Celsius. Also, the…

Q: For heat rejection at 20 degrees Celsius, compare the Carnot cycle efficiencies for an HTGR…

A: The operations which do in a repeated section of the operations are defined as cycles and it is also…

Q: 4. A typical heat engine shown in the figure, determine the heat lost to the cold reservoir?…

Q: A Carnot cycle operating on 2kg of methane, have the following properties given at the beginning of…

A: Ghh

Q: The outlet area of the nozzles in a simple impulse turbine is 15.5 cm2? and the steam leaves them…

Q: Efficiency of Carnot cycle is given as 75%. If the cycle direction is reversed, what will be the…

A: Let us take, Lower temperature of carnot cycle = TL Higher temperature of carnot cycle = TH Given,…

Q: work output from the

A: Given; An engine operates on the reversible cycles as shown in the figure.Find work output from the…

Q: A double-acting compressor with c=7% draws 40 lb per minute of air at 14.7 psia and 80F and…

A: To make calculations simple the given values are converted into SI units. Therefore, the solution is…

Q: Air at 25°C and 100kPa flows to a isothermal reversible compressor. The compressor releases heat at…

Q: Process during heat addition and heat rejection for Carnot cycle and Rankine cycle?

Q: A typical automobile engine Hot and cold reservoir temperature 530 K, 300 K Heat loss of hot…

A: Since you have uploaded question with multiple subparts, so as per the company guidelines we will…

Q: The working substance for a Carnot cycle is isothermal expansion is 9 ft³ and the pressı aring the…

Q: Quantitatively compare the Carnot Rankine cycle of (figure 1) with the ideal Rankine cycle (figure…

A: Given: From the T-s diagram of carnot cycle, (subscript c denotes carnot cycle)Boiller temperature…

Q: uring the compression stroke of a certain gasoline engine, the pressure increases from 1.00 atm to…

A: Internal combustion engine: Internal combustion engine is mainly known as IC engine. In this kind of…

Q: In a refrigerator, R-134a enters the evaporator (the cold heat exchanger) at –17°c , x= 25% and…

A: Given data, Assumption:- The operation of the refrigeration cycle is in a steady-state condition.…

Q: Engine I Referring to the schematic energy flow diagram of a typical automobile engine

Q: A Carnot cycle operating on 2kg of methane, have the following properties given at the beginning of…

Q: The Carnot cycle is a reversible cycle and produces work

A: Carnot cycle is an Ideal cycle in which all the processes are reversible.

Q: < Work output per on energy supplied equal * of None of the these O Adiabatic Carnot engine O…

A: The performance of any machine is measured by calculating the energy supplied to it and by…

Q: Heat exchangers exchange only heat and not mass (fluid does not mix). The working fluid is water…

A: Given Data Steam Inlet: 500 kPa, 300°C

Concept explainers

Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.

Question

100%

Please solve for the modified carnot cycle where it is unchanged for n_t = .8 and n_p = .7 and rate of entropy

Water is the working fluid in a Carnot vapor power cycle. Saturate liquid enters the boiler at a pressure of 10
MPa, and saturated vapor enters the turbine. The condenser pressure is 6 kPa. Determine (i) the thermal
efficiency, (ii) the back work ratio, (iii) the heat transfer to the working fluid in the boiler, and (iv) the heat
transfer from the working fluid in the condenser. In part B of the problem, irreversibilities in the adiabatic
expansion and compression processes cannot be neglected. If the states at the turbine and pump inlet remain
unchanged, repeat parts (i-iv) for the modified Carnot cycle with NT= 0.80 and Np = 0.70. Finally, calculate the
rate of entropy generation in modified Carnot cycle having irreversibilities.

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

Step 2

Step 3

Step 4

Step 5

Step 6

Trending now

This is a popular solution!

Step by step

Solved in 6 steps with 1 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

Air enters the compressor of gas turbine at a pressure of (1) bar and temperature of (29)°C and leaves at a pressure of (5.5) bar. Find: (a) the temperature T: (b) compressor work for (2) kg of air (c) efficiency of cycle. Take 7-1.4, cp = 1.004 kJ/kg K
[²] Hot T Q₁ T₂ W 2. One reversible engine undergoes a cycle as the figure. Q, withT-900K is sent into the engine by convection. Also, Q, is sent into environment by convection. Known, g-g₂-Aa-5kW/K andT,=300K. The engine operates with Carnot cycle. Ignoring the time in adiabatic processes. Assuming the time in each constant temperature processes is 1 second. The power requirement of the engine is 200kW. Ask T₁ Tand the efficiency of the system? Q₂ Cold source T
16. Two pounds of air at 100 psia occupy 4 cu ft; the air is heated and expands at a constant pressure until its volume is increased 300. per cent; after that the air expands adiabatically to 50 psi, and finally its pressure is 1educed isochorically to 15 psi. Determine the changes of available and unavailable energy and of the entropy between the starting and final condi- tions. Assume the refrigerator temperature to be 70 F, and use everage specific heats for the temperature range involved.
A Carnot refrigeration cycle is used as a reference to estimate the energy needed in an attempt to reduce the temperature of a laboratory sample to absolute zero. Suppose you want to remove 0.01 J of energy from the sample that is at 2x10-6K. If the high temperature is 20°C, the heat required is 982.05x10-5J. Analyzing these considerations, calculate the increase in laboratory entropy and the decrease in entropy in the sample.
Find the turbine specific work, y=0.143 state 1 2 3 45 9 10 kJ/kg 226 236.1670 3602 2796 3481 2494 702 Turbine Boiler 6. 8. 4 Mixing chamber Closed Condenser fwh 2 10 3 PII PI
There are received 25.2 Kg/s steam at 2.15 MPa, 480°c by a Rankine engine; exhaust occurs at 0.1 MPa and APE = 0, AKE = 0. For the engine, find work. 18899.82 KW 19889.28 KW 18998.28 KW 19988.85 KW For the engine, find steam rate. O 3.78 Kg/KWhr 4.78 Kg/KWhr 5.78 Kg/KWhr 7.48 Kg/KWhr.
Problem 1 1200 K Consider a heat engine in contact with a hot and cold reservoir, as shown. If 1000 joules of energy are input from the hot reservoir: 1000 J (a) What is the maximum amount of work that can be done? Explain. (b) How much energy in the form of heat is exhausted to the cold reservoir? Explain, (c) Assume the heat engine and the two reservoirs are isolated from the rest of the universe. Calculate the change in entropy of this isolated system during one cycle of operation. Explain. 400 K The most efficient engine possible operates on a Carnot cycle, which is composed of two isothermal processes, and two adiabatic processes. A typical PV diagram for a Carnot cycle is shown. Let us assume the working fluid of the engine is two moles of a monatomic ideal gas. (d) Using the information from the heat engine diagram, determine the temperature of the gas in each of states 1, 2, 3 and 4. (e) For each of the processes 1-2, 2-3, 3-4, and 4-1: i. determine how much heat is…
Solve fast..
1) An automobile has an average power of 22 kW/hour for trip. By a thermal efficiency of 30% how much fuel energy was used? What happened to all the energy? What change in entropy occur when assuming ambient at 200° C?
4 An air nozzle has an efficiency of .90 and is adiabatic. air enters at p1=200 kPa, T1=1300 K with negligible velocity. air exits at p2=130 kPa. use dead state variables of T0=293 k and P0= 100 kPa and a variable heat capacity. what is t2 and the rate of exergy destruction?
I need answer ASAP Its urgent
e. What is Rankine cycle and how it is created from modification in Carnot Cycle, elaborate with the help of diagram?