Answered: Example 7.1. A heat engine produces…

Example 7.1. A heat engine produces work equivalent to 80 kW with an efficiency of 40 percent. Determine the heat transfer rate to and from the working fluid.

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: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 75%. The waste heat…

A: Need to determine the power output of the motor and the temperature of the source.

Q: how many kW is the compressor power?,

Q: 14 A heat pump is driven by the work output of a heat engine, as shown in Figure P7.74. If we as-…

Q: 1. The four heat engines shown below have the maximum possible efficiency. Rank from smallest to…

A: Given data: - The temperature of the hot region is Th. The temperature of the colder region is Tc.

Q: A refrigeration cycle operating between hot and cold reservoirs at 40° C and 0°C removes energy by…

A: Given:Temperature of hot reservoir = Temperature of cold reservoir = Heat extracted from the cold…

Q: The maximum possible (Carnot) efficiency of a heat engine operating between constant temperature…

A: Efficiency: The ratio of the net work done by the system to the work or heat input into the system…

Q: An inventor claims to have devised a refrigeration cycle operating between hot and cold reservoirs…

A: Given data as per question Temperature of hot reservoirs = 308 K Temperature of cold reservoirs =…

Q: shown in the figure, an air conditioner operating at steady state maintains a dwelling at 70°F on a…

A: Given:Ti=70°F =294.261 KTo=90°F =305.37 Kheat transfer required, Qr=30,000 Btu/h1 btu/h=0.000393…

Q: A heat engine operating with a hot reservoir of furnace gases at 2300 °C. The cooling water is…

Q: Q1. Answer the following: - A- What are the differences between the heat and temperature?

A: Heat is the type of energy that is transmitted between systems or objects with varying temperatures.…

Q: on an ideal cycle is 37.94 %. Calculate the heat supplied per 1,332.57 Watt-hour of work develope

Q: Heat engine and refrigerator. Consider a heat engine operating between temperatures Th and Tj.…

Q: An inventor claims to have devised a refrigeration cycle operating between hot and cold reservoirs…

A: GivenT1=308KT2=278KQC=NWcycle

Q: The working substance for a Carnot cycle is 8 Ib of air. The volume at the eginning of isothemal…

Q: is q in < q out in power cycles, heat pump cycles, or refrigeration cycles?

Q: A Carnot heat pump delivers 2500 Btu of heat to a room maintained at 78°F by allowing room air to…

Q: QUESTION 3 (Analysis of steam cycles) A steam power plant operates on a theoretical reheat cycle.…

Q: A thermodynamic cycle receives 150 J of heat from a cold reservoir and rejects 165 J of heat to a…

A: Heat from a cold reservoir = 150 J Heat to a hot reservoir = 165 J

Q: A reversible heat engine operates between two reservoirs: one at T 395.0°C and another at Te 150°C.…

Q: A heat engine, operating between reservoirs at temperatures of 372 deg C and 17 deg C, performs 3.2…

A: When the engine is working at any process or other than reversible process than the efficiency of…

Q: An inventor claims to have devised a refrigeration cycle operating between hot and cold reservoirs…

A: Given data:- Temperature of hot reservoirs = 30 K Temperature of cold…

Q: Figure below shows a reversible heat engine ER having heat interactions with three constant…

A: Given:Q1=100 kJQ2=50 kJ

Q: Data are provided for two reversible refrigeration cycles. One cycle operates between hot and cold…

Q: An air conditioner is removing heat at a rate of 3424 W from a room that is maintained at 22 C and…

A: Calculated power consume by the air conditioner in Watt.

Q: Two reversible engines operate in series between a high-temperature (TH) and a low-temperature (T)…

Q: A reversible power cycle operating as in the figure receives energy QH by heat transfer from a hot…

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

Example 7.1. A heat engine produces work equivalent to 80 kW with an efficiency of 40 percent.
Determine the heat transfer rate to and from the working fluid.

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

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 3 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

If the compressor of a Brayton cycle gas turbine operates at a pressure ratio 24.9, and the rate of heat transfer during the heat addition process is 590 kW, what is the net work out from the device? Take the working fluid to be superheated steam with a specific heat ratio of 1.33, and give your answer in kW to one decimal place.
Air is used as a working substance in a given internal combustion engine, which is supplied with heat at a constant volume. Based on the data, calculate the The work of the cycle.
Example 6.1 Heat is transferred to a heat engine from a furnace at a rate of 80 MW. IF the rate of waste heat rejection to a nearby river is 50MW, determine the net power output and the thermal efficiency for this heat engine.
pls answer all the given thanks
As shown in the figure, an air conditioner operating at steady state maintains a dwelling at 70°F on a day when the outside temperature is 103.5°F. The rate of heat transfer into the dwelling through the walls and roof is 30,000 Btu/h and the net power input to the air conditioner compressor is 3.45 hp. Step 1 B Inside, 70° F Determine the coefficient of performance for the air conditioner. = Evaporator i 30,000 Btu/h Determine the coefficient of performance of the air conditioner. Determine the power input required, in hp, and the coefficient of performance for a reversible air conditioner providing the same cooling effect while operating between the same cold and hot temperatures. Refrigerant loop Compressor Outside Q + Condenser
A window-mounted air conditioner removes 2.1 kJ from the inside of a home using 1.75 kJ work input. What is its coefficient of performance? Note: thermodynamically, and air conditioner is the same thing as a refrigerator - it makes the inside of a container (house, refrigerator) colder.
1. Consider the following heat engines operating between 1200K and 300 K. For each case determine whether the heat engine operates reversibly, operates irreversibly, or is impossible. a. QH = 850 kJ, Qc = 300 kJ, Wnet = 550 kJ, %3| b. QH = 900 kJ, Qc = 400 kJ, Wnet = 550 kJ, %3D c. QH = 700 kJ, Qc = 140 kJ, Wnet = 560 kJ, d. QH = 800 kJ, Qc = 200 kJ, Wnet = 600 kJ.