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The ratio of quantity of heat removed per cycle from the contents of the refrigerator to the energy spent per cycle to remove this heat is called the
- a)coefficient of performance
- b)principle of heat engine
- c)efficiency of heat engine
- d)efficiency of refrigerator
Correct answer is option 'A'. Can you explain this answer?
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The ratio of quantity of heat removed per cycle from the contents of t...
The ratio of quantity of heat removed per cycle from the contents of the refrigerator to the energy spent per cycle to remove this heat is called the coefficient of performance. It is the definition of coefficient of performance.
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Understanding Coefficient of Performance (COP)
The Coefficient of Performance (COP) is a crucial concept in thermodynamics, especially in the context of refrigeration systems.
Definition of COP
- The COP is defined as the ratio of the heat removed (Q) from the refrigerated space to the work (W) input to the refrigerator.
- Mathematically, it can be expressed as:
COP = Q/W
Significance of COP
- A higher COP indicates a more efficient refrigerator, meaning it can remove more heat for each unit of work input.
- It serves as a measure of a refrigerator's effectiveness, allowing consumers to compare different models based on their energy consumption and performance.
Comparison with Other Terms
- Principle of Heat Engine: This refers to the fundamental concepts governing heat engines, which convert heat into work, contrasting with refrigeration.
- Efficiency of Heat Engine: This measures how well a heat engine converts heat into work, which is different from the COP of a refrigerator.
- Efficiency of Refrigerator: While sometimes used interchangeably with COP, it is not a standard term in thermodynamics. Efficiency usually refers to how effectively energy is converted into useful work.
Conclusion
The correct answer is option 'A' because the COP of a refrigerator specifically quantifies its performance in terms of heat removal versus energy input. Understanding COP helps consumers make informed choices regarding energy-efficient appliances.
The Coefficient of Performance (COP) is a crucial concept in thermodynamics, especially in the context of refrigeration systems.
Definition of COP
- The COP is defined as the ratio of the heat removed (Q) from the refrigerated space to the work (W) input to the refrigerator.
- Mathematically, it can be expressed as:
COP = Q/W
Significance of COP
- A higher COP indicates a more efficient refrigerator, meaning it can remove more heat for each unit of work input.
- It serves as a measure of a refrigerator's effectiveness, allowing consumers to compare different models based on their energy consumption and performance.
Comparison with Other Terms
- Principle of Heat Engine: This refers to the fundamental concepts governing heat engines, which convert heat into work, contrasting with refrigeration.
- Efficiency of Heat Engine: This measures how well a heat engine converts heat into work, which is different from the COP of a refrigerator.
- Efficiency of Refrigerator: While sometimes used interchangeably with COP, it is not a standard term in thermodynamics. Efficiency usually refers to how effectively energy is converted into useful work.
Conclusion
The correct answer is option 'A' because the COP of a refrigerator specifically quantifies its performance in terms of heat removal versus energy input. Understanding COP helps consumers make informed choices regarding energy-efficient appliances.
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The ratio of quantity of heat removed per cycle from the contents of the refrigerator to the energy spent per cycle to remove this heat is called thea)coefficient of performanceb)principle of heat enginec)efficiency of heat engined)efficiency of refrigeratorCorrect answer is option 'A'. Can you explain this answer?
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