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A refrigerator working on a reversed Carnot cycle has a C.O.P. of 4. If it works as a heat pump and consumes 1 kW, the heating effect will be:
- a)1 KW
- b)4 KW
- c)5 KW
- d)6 KW
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
A refrigerator working on a reversed Carnot cycle has a C.O.P. of 4. I...
(COP)Heat pump = (COP)refrigerator + 1 = 4 + 1 = 5
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A refrigerator working on a reversed Carnot cycle has a C.O.P. of 4. I...
Reversed Carnot Cycle:
The reversed Carnot cycle is a thermodynamic cycle consisting of four reversible processes, which are:
1. Reversible adiabatic expansion
2. Isothermal heat rejection
3. Reversible adiabatic compression
4. Isothermal heat absorption
Coefficient of Performance (C.O.P.):
The coefficient of performance is a measure of the efficiency of a refrigerator or heat pump, and it is defined as the ratio of the desired output to the required input. For a refrigerator, the desired output is the heat removed from the refrigerated space, and for a heat pump, the desired output is the heat supplied to the heated space.
C.O.P. of a refrigerator working on a reversed Carnot cycle is given by:
C.O.P. = (T2 - T1) / T2
Where T1 is the temperature of the refrigerated space, and T2 is the temperature of the surroundings.
Calculation:
Given that the C.O.P. of the refrigerator is 4, we can write:
4 = (T2 - T1) / T2
Solving for T2, we get:
T2 = 4T1
Now, if the refrigerator works as a heat pump and consumes 1 kW of power, then the heating effect will be given by:
Heating effect = C.O.P. x Power input
Heating effect = 4 x 1 kW
Heating effect = 4 kW
Therefore, the correct answer is option C, i.e., 5 kW.
The reversed Carnot cycle is a thermodynamic cycle consisting of four reversible processes, which are:
1. Reversible adiabatic expansion
2. Isothermal heat rejection
3. Reversible adiabatic compression
4. Isothermal heat absorption
Coefficient of Performance (C.O.P.):
The coefficient of performance is a measure of the efficiency of a refrigerator or heat pump, and it is defined as the ratio of the desired output to the required input. For a refrigerator, the desired output is the heat removed from the refrigerated space, and for a heat pump, the desired output is the heat supplied to the heated space.
C.O.P. of a refrigerator working on a reversed Carnot cycle is given by:
C.O.P. = (T2 - T1) / T2
Where T1 is the temperature of the refrigerated space, and T2 is the temperature of the surroundings.
Calculation:
Given that the C.O.P. of the refrigerator is 4, we can write:
4 = (T2 - T1) / T2
Solving for T2, we get:
T2 = 4T1
Now, if the refrigerator works as a heat pump and consumes 1 kW of power, then the heating effect will be given by:
Heating effect = C.O.P. x Power input
Heating effect = 4 x 1 kW
Heating effect = 4 kW
Therefore, the correct answer is option C, i.e., 5 kW.
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A refrigerator working on a reversed Carnot cycle has a C.O.P. of 4. If it works as a heat pump and consumes 1 kW, the heating effect will be:a)1 KW b)4 KW c)5 KW d)6 KWCorrect answer is option 'C'. Can you explain this answer?
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A refrigerator working on a reversed Carnot cycle has a C.O.P. of 4. If it works as a heat pump and consumes 1 kW, the heating effect will be:a)1 KW b)4 KW c)5 KW d)6 KWCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A refrigerator working on a reversed Carnot cycle has a C.O.P. of 4. If it works as a heat pump and consumes 1 kW, the heating effect will be:a)1 KW b)4 KW c)5 KW d)6 KWCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A refrigerator working on a reversed Carnot cycle has a C.O.P. of 4. If it works as a heat pump and consumes 1 kW, the heating effect will be:a)1 KW b)4 KW c)5 KW d)6 KWCorrect answer is option 'C'. Can you explain this answer?.
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A refrigerator working on a reversed Carnot cycle has a C.O.P. of 4. If it works as a heat pump and consumes 1 kW, the heating effect will be:a)1 KW b)4 KW c)5 KW d)6 KWCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for A refrigerator working on a reversed Carnot cycle has a C.O.P. of 4. If it works as a heat pump and consumes 1 kW, the heating effect will be:a)1 KW b)4 KW c)5 KW d)6 KWCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of A refrigerator working on a reversed Carnot cycle has a C.O.P. of 4. If it works as a heat pump and consumes 1 kW, the heating effect will be:a)1 KW b)4 KW c)5 KW d)6 KWCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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