Question: The high-temperature heat source for a cyclic heat engine is a SSSF heat exchanger where R-134a enters at 80C, saturated vapor, and exits at 80C,

The high-temperature heat source for a cyclic heat engine is a SSSF heat exchanger where R-134a enters at 80C, saturated vapor, and exits at 80C, saturated liquid at a flow rate of 5 kg/s. Heat is rejected from the heat engine to a SSSF heat exchanger where air enters at 150 kPa and ambient temperature 20C, and exits at 125 kPa, 70C. The rate of irreversibility for the overall process is 175 kW. Calculate the mass flow rate of the air and the thermal efficiency of the heat engine.

Step by Step Solution

★★★★★

3.41 Rating (157 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

CV R134a Heat Exchanger MR134a 5 kgs Inlet T 80C sat ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

E-ME-T (3394).docx

120 KBs Word File

Students Have Also Explored These Related Mechanical Engineering Questions!

The high-temperature heat source for a cyclic heat engine is a steady flow heat exchanger where R-134a enters at 80C, saturated vapor, and exits at 80C, saturated liquid at a flow rate of 5 kg/s....

Saturated liquid nitrogen at 500 kPa enters a SSSF boiler at a rate of 0.005 kg/s and exits as saturated vapor. It then flows into a super heater also at 500 kPa where it exits at 500 kPa, 275 K....

Saturated liquid ethane at 2.44 MPa enters a heat exchanger and is brought to 611 K at constant pressure, after which it enters a reversible adiabatic turbine where it expands to 100 kPa. Find the...

5-43C Consider an adiabatic turbine operating steadily. Does the work output of the turbine have to be equal to the decrease in the energy of the steam flowing through it? 5-44C Consider an air...

A high-temperature reservoir at T = 500F is to be used as the heat source for a steady-state heat engine, and a low-temperature reservoir at T = 75F is to be used as the heat sink. The boiler takes...

Problem 1 ( 3 pts . ) : An EDGE computing system uses a regular vapor - compression ( VC ) refrigeration system for cooling its computational racks and the ambient ( i . e . , the surrounding air )...

ATTEMPT ALL QUESTIONS. BE SURE TO ANSWER A body with mass m = 1 2 kg is attached to the end of a spring that is stretched 2 m by a force of 100 N. Furthermore, there is also attached a dashpot4 that...

5-180 Determine the power input for a compressor that compresses helium from 150 kPa and 20C to 400 kPa and 200C. Helium enters this compressor through a 0.1-m2 pipe at a velocity of 15 m/s. 5-181...

There are currently federal state incentives for homeowners to install air source heat pumps ( ASHP ) for winter heating. Heat pumps can connect to ducted or ductless systems ( air heating ) and can...

Consider a condenser unit (shell and tube heat exchanger) of an HVAC facility where saturated refrigerant R134a at a saturation pressure of 1318.6 kPa and at a rate of 2.5 kg/s flows through...

Concord Farms produces items made from local farm products that are distributed to supermarkets. For many years, Concords products have had strong regional sales on the basis of brand recognition;...

XYZ Power Ltd. set up a factory for manufacturing solar lanterns in a remote village as there was no reliable supply of electricity in rural area. The revenue earned by the company was sufficient day...

Vehicles arrive, randomly and independently, at a toll booth located at the entrance to a bridge at the rate of 240 per hour between 1 am and 2 am. Suppose a vehicle has just arrived. a. What is the...

Determine the force in members EI and JI of the truss which serves to support the deck of a bridge. State if these members are in tension or compression. Units Used: kip = 103 lb Given: F1 = 4000 lb...

A 0.016773-m3 tank contains 1 kg of refrigerant-134a at 110C. Determine the pressure of the refrigerant, using (a) The ideal-gas equation, (b) The generalized compressibility chart, and (c) The...

The compound-lever pruning shears shown can be adjusted by placing pin A at various ratchet positions on blade ACE. Knowing that 1.5-kN vertical forces are required to complete the pruning of a small...

An object with mass m initially at rest is acted on by a force F = kli, + k2t3j, where kl and k2 are constants. Calculate the velocity v(t) of the object as a function of time.

Steam at 400C has a specific volume of 0.02 m3/kg determine the pressure of the steam based on (a) The ideal gas equation, (b) The generalized compressibility chart, and (c) The steam tables.

A horizontal essentially weightless lever is pivoted so it can rotate freely in a vertical plane. A downward force of 30.0 N is applied perpendicularly to the lever at a point 25.0 cm from and to the...

Please provide answers to the multiple choice questions above using the answer choices below... Question 1 a) -274M b) -1117M c) -279M d) -277M Question 2 a) -239M b) -1633M c) -1907M d) -516M...

You've observed the following returns on Crash-n-Burn Computer's stock over the past five years: 2 percent, 15 percent, 23 percent, 13 percent, and 16 percent. What was the arithmetic average return...

Problem 9-18 Bond Price Changes (LO3, CFA7) 6 U.S. Treasury STRIPS, close of business February 15, 2019: 6 points Maturity Feb 2020 Feb 2021 Feb 2022 Price 97.123 94.770 92.424 Maturity Feb 2023 Feb...