Reversible power cycle operating between hot-cold reservoirs

Assignment Help Mechanical Engineering
Reference no: EM13717599

The thermal efficiency of a reversible power cycle operating between hot and cold reservoirs is 20%. Evaluate the coefficient of performance of

a) a reversible refrigeration cycle operating between the same two reservoirs.

b) a reversible heat pump cycle operating between the same two reservoirs. State all assumptions

Reference no: EM13717599

Questions Cloud

Relative humidity passes over the cold evaporator coil : Air at 1 atm 30 C and 80% relative humidity passes over the cold evaporator coil of an air conditioner at constant pressure. The air and condensate leave the coil at 18C. The moist air flow rate is 0.02 kg/s.
The dry air mass flow rate and water vapor mass flow rate : At a certain location in a duct, moist air at 35 C, 125 kPa and a relative humidity of 50% flows at a volume flow rate of 50 m^3/s. using tabular data, determine the following: i)the humidity ratio ii)the dry air mass flow rate (kg/s) iii) the water ..
Using the heat pumps instead of the heaters : A house is kept at 22oC in the winter by means of electric heaters. On a cold day, the heaters are on for 18 hours and use an average power of 5 kW. How much power would be saved if a heat pump with a COP of 2.0 was to be used instead?
Design the svaj curves for the follower using polynomials : Equally spaced parts, with the distance between the parts being 10 inches, are coming on a conveyor belt. A machine tool has to operate on the part for 1 second as the part is moving on the conveyor. The speed of the conveyor belt is 5 in/second.
Reversible power cycle operating between hot-cold reservoirs : The thermal efficiency of a reversible power cycle operating between hot and cold reservoirs is 20%. Evaluate the coefficient of performance of a reversible refrigeration cycle operating between the same two reservoirs.
Find the speed of the particle if it is a proton : A charged particle travels unelected through perpendicular electric and magnetic fields whose magnitudes are 4000N/C and 40mT, respectively. Find the speed of the particle if it is a proton
Efficiency is used to pump water through a schedule : A 20 hp pump with 80% efficiency is used to pump water through a Schedule 40 3-inch pipe made of commercial steel. The pipe outlet is at a gage pressure of 100 psi, and is 350 feet above the inlet, which is at ambient pressure. The total pipe length ..
What is the angle that the ramp makes with the floor : A 2 kg block starts at rest and slides down a frictionless ramp that makes an unknown angle with respect to the horizontal floor below. What is the angle that the ramp makes with the floor
Water flows downward through a vertical smooth pipe : Water flows downward through a vertical smooth pipe (i.e., roughness = 0). When the flow rate is 0.5 ft3/s, there is no pressure change along the length of the pipe. What is the pipe diameter?

Reviews

Write a Review

 

Mechanical Engineering Questions & Answers

  If the mass is displaced two inches and then released what

a single degree of freedom system has a concentrated mass weighing 38.6 lb. a spring constant of 22.5 lb.in. and a

  The radial loads of both gears are in the same plane and

a shaft is to be designed to support the spur pinion and helical gear shown in the figure on two bearings spaced 700 mm

  How many engagement points on flywheel would be necessary

A full revolution press has 100 rpm flywheel rotation. The press is equipped with tow hand trip devices mounted on the machine at a distance of 20 inches from the point of operation. How many engagement points on the flywheel would be necessary to ma..

  Find the turbine efficiency using the air tables

Air enters a non-ideal gas turbine at T1 = 2290°F, P1 = 196 psia and exits at T2 = 1200°F, P2 = 14 psia. (a) Assuming constant specific heats evaluated at 1000F, find the turbine efficiency using the Air Tables.

  A shaft is subjected to a maximum load of 10 kn it is

a shaft is subjected to a maximum load of 10 kn. it is designed to withstand a load of 15 kn. if the maximum load

  Find the total heat loss per m length of the steam line

find the total heat loss per m length of the steam line. Find also the temperature at the interface of steam and insulation.

  In a specific type of heat exchanger

In a specific type of heat exchanger, a very hot jet of air is cooled from 145 degrees centigrade to 100 degrees centigrade by a cold stream of water. The water temperature must not rise By more than 12 degrees centigrade. Find 1.

  If the liquid water is initially at a temperature of 30degc

a pot of 1 kg of liquid water is heated on a mountain top where the atmospheric pressure is 0.8 bar. if the liquid

  Discuss the similarities and differences between coulomb

discuss the similarities and differences between coulomb friction damping with the damper used in sdof

  Turbine work output in kg and thermal efficiency of cycle

A steam power plant operates on the ideal reheat Rankine cycle. Steam enters the high pressure turbine at 6 MPa and 4000C and leaves at 2 MPa. Steam is then reheated at constant pressure to 4000C before it expands to 20 kPa in the low pressure turbin..

  What is poisson ratio and shear modulus of this material

A 1 foot long cylindrical rod with a diameter of 0.25 inch is subjected to a tensile load of 1,500 lbs. Suppose the rod was elongated 0.01 inch under this load, what is the stress and strain created by the load? What is the Young’s Modulus of the mat..

  Determine mole fraction of dichloromethane in the gas

we have a process air stream that is 30 mole dichloromethane and 70 air at 80 of. the inlet flow rate of the gas stream

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