Evaluate the thermal efficiency-carnot power cycle

Assignment Help Mechanical Engineering
Reference no: EM13718043

One-half kilogram of water executes a Carnot power cycle. During the isothermal expansion, the water is heated until it is a saturated vapor from an initial state where the pressure is 1.5 MPa and the quality is 25%. The vapor then expands adiabatically to pressure of 100 kPa while doing 403.8 kJ/kg of work.

a) Evaluate the heat and work for each process, in kJ.

b) Evaluate the thermal efficiency.

Reference no: EM13718043

Questions Cloud

Identify the problem statement in the essay : What is the purpose of the essay? Is it stated clearly and identify the problem statement in the essay. Does the introduction and conclusion focus clearly on the problem statement?
Regulation of the audit profession : Regulation of the Audit Profession and reporting Financial Performance
Calculate the entropy change between these two phases : Consider a Refrigerant 22 at 0 C that is going through a phase change from the saturated liquid to saturated vapor. Using T-dS equations, calculate the entropy change between these two phases. Please show the equations and solution.
Properties enthalpy and entropy are deriven from heat : In thermodynamics, path functions such as heat or work are dependent on path process, point functions are not. Properties enthalpy and entropy are deriven from heat and work relationships. However, when we calculate these properties just like point f..
Evaluate the thermal efficiency-carnot power cycle : One-half kilogram of water executes a Carnot power cycle. During the isothermal expansion, the water is heated until it is a saturated vapor from an initial state where the pressure is 1.5 MPa and the quality is 25%.
Determine the minimum theoretical value for TH in K : A power cycle operates between a reservoir at temperature TH and a lower-temperature reservoir at 280 K. At steady state, the cycle develops 40 kW of power while rejecting 1000 kJ/min of energy by heat transfer to the cold reservoir. Determine the mi..
Developed a device that executes a power cycle : An inventor claims to have developed a device that executes a power cycle while operating between reservoirs at 500 and 300 K that has a thermal efficiency of (a) 45%, (b) 40%, (c) 35%. Evaluate the claim for each case.
Maximum and minimum temperatures for the cycle : One kilogram of air as an ideal gas executes a Carnot power cycle having a thermal efficiency of 60%. The heat transfer to the air during the isothermal expansion is 40 kJ. At the beginning of the isothermal expansion, the pressure is 700 kPa and the..
Component in the shape of a large rectangular sheet : A component in the shape of a large rectangular sheet is made from AL-7075-T651. It carries uniform axial stress that may reach up to 50% of its yield strength. Assuming worst case scenario, what is the largest edge crack that can be allowed?

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  What is the primary difference between the strength

What is the primary difference between the strength of a structure and the strength of a material? Is a strong material stiff?

  What is the specific volume of water at 50 mpa and 80

what is the specific volume of water at 50 mpa and 80 degrees celcius. what would it be if the incompressible liquid

  A simply supported circular cylindrical shell of radius a

a simply supported circular cylindrical shell of radius a and length l carries its own weight p per unit area that is

  Assume constant gravitational acceleration

A rocket is launched vertically and reaches its maximum height hmax. What are its velocity, v(t)= (dh/dt) , and height above ground h(t) as a function of time t >_ 0(greater than or equal to) before it lands on ground (h = 0)?

  Determine the surface temperature of the heated panel

A room has 1000 ft2 of surface, of which 120 ft2 is to be heated, and the balance has an average surface temperature of 60°F. The air temperature in the room is 68°F. The room is occupied by light clothed adults at rest. Determine the surface tempera..

  Design a journal bearing for a centrifugal pump running

Design a journal bearing for a centrifugal pump running at 1440 r.p.m. The diameter of the journal is 100 mm and load on each bearing is 20 KN. The factor ZN/p may be taken as 28 for centrifugal pump bearings. The bearing is running at 70 degrees Cel..

  The turbine efficiency is 88 while the pump efficiency is

water is used in a regenerative power cycle where the standard rankine cycle is augmented with one closed feed water

  The acceleration of a particle traveling along a straight

the acceleration of a particle traveling along a straight line is a8-2s ms2 where s is in meters. if v0 at s0 determine

  Calculate number of vacancies per cubic meter in some metal

Calculate the number of vacancies per cubic meter in some metal at 753°C. The energy for vacancy formation is 0.81 eV/atom, while the density and atomic weight for this metal are 6.38 g/cm3 and 49.43 g/mol, respectively. Find in m^-3 units.

  Determine the work output-isentropic efficiency of the cycle

In a reheat rankine cycle, steam enters the turbine at 4 MPa and 400 C. After expanding to 400 kPa, the steam is reheated again to 400 C, and expands in the low pressure turbine to 10 kPa. If the efficiency of the turbine and the pump is 100% and the..

  What are the reaction forces and reaction moments what is

consider a solid bar in the shape of a hook shown in figure 1. a coordinate system is also shown. a load p is applied

  Compare the effectiveness of quenching in moderately

compare the effectiveness of quenching in moderately agitated water and oil by graphing on a single plot radial

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd