Question

A Carnot heat engine receives heat at 800 K and rejects heat to the environment at...

A Carnot heat engine receives heat at 800 K and rejects heat to the environment at 325 K. The entire work output from the heat engine is used to drive the Carnot refrigerator that removes heat from the cold space kept at -18 C at a rate of 275 kJ/min and rejects it to the same environment at 325 K. Determine the following:

1. The Carnot Coefficient of Performance for the refrigeration cycle

2. The Carnot efficiency for the Heat Engine

3. The rate of heat supplied to the heat engine

4. The rate of heat rejection to the environment (the 325 K environment)

Engineering   Chemical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A Carnot heat engine receives 15 kW of heat at 1200 K and rejects heat at...
A Carnot heat engine receives 15 kW of heat at 1200 K and rejects heat at 300 K.   The power produced from the engine is used to drive a reversed Carnot cycle, acting as a refrigerator, where the low temperature is 260 K and the high temperature is 300 K. What is the cooling effect, the amount of heat removed at 260 K, and what is the COPc ? Ans:  6.5     73.125 kW
A Carnot engine extracts 100 kJ of heat from an 800°C reservoir and rejects to the...
A Carnot engine extracts 100 kJ of heat from an 800°C reservoir and rejects to the surroundings at 20°C. Calculate the entropy change (a) of the reservoir and (b) of the surroundings.
A Carnot engine operating between 600.15 K (327°C) and 300.15 K (27°C) supplies 90% of the...
A Carnot engine operating between 600.15 K (327°C) and 300.15 K (27°C) supplies 90% of the work generated to run a Carnot pump (refrigerator) operating between -263.15 K (-100C) and 298.15 K (250C). If the engine rejects 20 KJ/s to the heat-sink reservoir QC=-20KJ/s at 270C, determine the heat rejection QH of the refrigerator.
A heat engine is assumed to operate on a Carnot cycle. It receives 600kJ heat from...
A heat engine is assumed to operate on a Carnot cycle. It receives 600kJ heat from a high temperature reservoir at 600oC and rejects heat to a low temperature reservoir at 20oC. a. Calculate the thermal efficiency of the cycle. b. What is QL? c. What is the net work produced by this cycle? d. Does this process violate Kelvin-Plank statement? Explain. e. An inventor claimed that he built a heat engine operating between the same reservoirs that give a...
A refrigerator has a coefficient of performance of K=2.1. Each cycle, it absorbs 3.45×104 J of...
A refrigerator has a coefficient of performance of K=2.1. Each cycle, it absorbs 3.45×104 J of heat from the cold reservoir. The refrigerator is driven by a Carnot engine that has an efficiency of e=0.5. 1.During each cycle, how much heat flows into the Carnot engine? Express your answer in joules to three significant figures.
Consider a Carnot-type engine driven by two heat reservoirs at 450 K and 280 K, respectively....
Consider a Carnot-type engine driven by two heat reservoirs at 450 K and 280 K, respectively. Heat can flow from the hot reservoir to the engine at 80,000 BTU/hr (BTU=British Thermal Unit= 1054 J). What is the maximum efficiency of this engine? What is the maximum power, in watts, that can be generated by the engine?
A refrigeration cycle removes heat at a rate of 250kJ/min from a cold space maintained at...
A refrigeration cycle removes heat at a rate of 250kJ/min from a cold space maintained at -13oC while reejecting heat to the atmosphere at 27oC. If the power consumption rate is 0.73kW, determine if: 1.) reversible 2.) irreversible 3.) impossible
35. A heat engine receives heat in the amount of Qh= 775 kJ from a high...
35. A heat engine receives heat in the amount of Qh= 775 kJ from a high thermal reservoir and delivers Wnet= 210 kJ of work per cycle. Write an expression for the efficiency of the engine. What is the efficiency? Write an expression for the amount of energy required to be rejected into the low temperature reservoir. How much energy, in kilojoules, is rejected into the low temperature reservoir?
Chapter 16 Part 2: Question 16.3 An ideal Carnot engine takes 2000 J of heat from...
Chapter 16 Part 2: Question 16.3 An ideal Carnot engine takes 2000 J of heat from a reservoir at 500 K, does some work, and discards some heat to a reservoir at 350 K. Let’s see what happens if the Carnot engine described is run backward as a refrigerator.What is its performance coefficient? SOLUTION SET UP AND SOLVE We know that a refrigerator will act like an engine but with the signs for QH, QC, and Wreversed because the cycle...
Increasing the temperature of the heat addition (T subscript H) in any heat engine cycle, with...
Increasing the temperature of the heat addition (T subscript H) in any heat engine cycle, with keeping all other parameters unchanged: A. None of the answers. B. Decreases the heat added at high temperature. C. Increases the thermal efficiency of the cycle. D. Decreases the thermal efficiency of the cycle. 1 points    QUESTION 2 The maximum thermal efficiency of the Rankine cycle power plant is achieved when: A. it works on Carnot heat engine cycle. B. the pump work...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT