B) A reversible heat engine operates between two reservoirs at temperatures of 600°C and 40°C. The engine drives a reversible refrigerator which operates between reservoirs at temperatures of 40°C and -20°C. The heat transfer to the heat engine is 2000 kJ and the net work output for the combined engine refrigerator is 360 kJ. (i) Calculate the heat transfer to the refrigerant and the net heat transfer to the reservoir at 40°C. (ii) Reconsider (i) given that the efficiency of the heat engine and the C.O.P. of the refrigerator are each 40 per cent of their maximum possible values.

B) A reversible heat engine operates between two reservoirs at temperatures of 600°C and 40°C. The engine drives a reversible refrigerator which operates between reservoirs at temperatures of 40°C and -20°C. The heat transfer to the heat engine is 2000 kJ and the net work output for the combined engine refrigerator is 360 kJ. (i) Calculate the heat transfer to the refrigerant and the net heat transfer to the reservoir at 40°C. (ii) Reconsider (i) given that the efficiency of the heat engine and the C.O.P. of the refrigerator are each 40 per cent of their maximum possible values.

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: An inventor claims to have invented a heat engine that receives 750kJ of heat from a source at 400K…

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

A: Given: Th=395 °CTC=150 °CQ1=125 kJ

Q: H6. An air conditioner in an upper-floor apartment unit is turned on during a hot summer afternoon.…

A: Given: The heat removed from the interior, Q = 1.5 kW

Q: A refrigerator maintains the freezer compartment at -10°C when the air surrounding the refrigerator…

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: Consider three reservoirs that are TH = 473.2 K, TL = 293.2 K and TI = 277.2 K. A Carnot heat…

A: Efficiency of a Carnot engine is given by, efficiency of Carnot engine depends only on temperature…

Q: heat engine has a net work output of 500 MW. It receives thermal energy from water traveling through…

Q: rigerator has a coefficient of performance equal to 5. If the refrigerator absorbs 120 J of thermal…

Q: (b) A heat pump shown in Figure Q5(b) comprises four (4) basic components. It uses R-134a as a…

A: Given:W=700 WPce=770 KpaTce=38°Cm=0.02Kg/s

Q: A CARNOT heat engine receives heat from a reservoir at 900°C at a rate of 800kJ/min and rejects the…

A: To Find:- a) The maximum rate of heat removal from the refrigerated space b) The total rate of heat…

Q: A refrigerator has a coefficient of performance of 1.6. How much work in KJ must be supplied to this…

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

Q: A mechanical vapor compression refrigeration cycle operates with water as the working fluid. The…

A: Since we are allowed to answer 3 subparts. So, we’ll answer the first 3. Please resubmit the…

Q: A new parabolic dish solar concentrator is being developed to supply electricity to a small remote…

A: Qs=200 KwTTR1=700° CTTR1=700+273=973 KTTR2=25+273=298 KWnet=120 Kw

Q: A refrigeration unit absorbs 1 kW of heat from the cold reservoir and rejects 1.3 kW of heat to the…

Q: HOW MUCH HEAT IS RELEASED BY THE REFRIGERATOR TO THE HOT RESERVOIR?

Q: A Carnot heat engine operates between a source at 727 °C and a sink at 27 °C If the heat engine is…

Q: A reversible heat engine operates between two reservoirs: one at Th = 395.0°C and another at Te =…

A: Given that there is a reversible heat engine working between two temperature limits Th = 305…

Q: A reversible heat engine operates between two reservoirs: one at Th = 395.0°C and another at Te =…

Q: Consider three reservoirs that are TH = 473.2 K, TL = 293.2 K and TI = 277.2 K. A Carnot heat…

Q: A reversible heat engine operates between two reservoirs: one at Th = 395.0°C and another at Te =…

Question

B) A reversible heat engine operates between two reservoirs at temperatures of 600°C and
40°C. The engine drives a reversible refrigerator which operates between reservoirs at
temperatures of 40°C and -20°C. The heat transfer to the heat engine is 2000 kJ and the net
work output for the combined engine refrigerator is 360 kJ. (i) Calculate the heat transfer to
the refrigerant and the net heat transfer to the reservoir at 40°C. (ii) Reconsider (i) given that
the efficiency of the heat engine and the C.O.P. of the refrigerator are each 40 per cent of
their maximum possible values.

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

Given data

Solution of part 1

Solution of part 1

Solution of part 2

Solution of part 2

Solution of part 2

Trending now

This is a popular solution!

Step by step

Solved in 6 steps with 6 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

2
Professor Modyn wants to power his refrigerator with a heat engine. A Carnot heat engine receives heat from a reservoir at 543.0 ∘C543.0 ∘C at a rate of 820 kJ/min820 kJ/min and rejects heat to the ambient air at 31.1 ∘C.31.1 ∘C. The entire work output of the heat engine is used to drive a refrigerator that removes heat from the refrigerated space at −3.23 ∘C−3.23 ∘C and transfers it to the same ambient air at 31.1 ∘C.31.1 ∘C. Note: The IUPAC sign conversion for work is used. Work into the system has a positive value. Determine the maximum rate of heat removal from the refrigerated space (kW) Determine the total rate of heat rejection to the ambient air. Heat rejection is a negative value. Account for both the heat engine and refrigerator.
(d) A heat engine receives heat from a heat source at 1200°C and has a thermal efficiency of 40%. The heat engine does maximum work equal to 500 kJ. Determine the heat supplied to the heat engine by the heat source, the heat rejected to the heat sink, and the temperature of the heat sink.
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.
A "cold room" used for low-temperature research is maintained at a constant temperature of 7.00°C. The refrigeration unit vents to outdoor air which is at 27.0°C. The rate at which energy is exhausted to the outdoors is 18.0 kW. The coefficient of performance (COP) of the refrigeration unit is equal to 40.0% of the COP of an ideal Carnot refrigerator. (a) At what rate (in kW) does the refrigeration unit remove energy from the room? (Round your answer to at least two decimal places.) kW (b) What is the power input (in kW) required by the refrigeration unit? kW (c) What is the entropy change of the Universe (in J/K) produced by the refrigeration unit after it operates for 3.00 h? J/K (d) If the outside temperature increases to 33.0°C, what is the percent change in the COP of the refrigeration unit? (Include the sign of the value in your answer.) % Need Help? Read It