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Consider an ideal vapor compression refrigeration cycle. If the throttling process is replaced by an isentropic expansion process, keeping all the other processes unchanged, which one of the following statements is true for the modified cycle?
[2019]
- a)Coefficient of performance is higher than that of the original cycle.
- b)Coefficient of performance is the same as that of the original cycle.
- c)Coefficient of performance is lower than that of the original cycle.
- d)Refrigerating effect is lower than that of the original cycle.
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Consider an ideal vapor compression refrigeration cycle. If the thrott...
Vapor compression refrigeration cycle :
Both cycle required same amount of work input but by use of Isentropic expander, we can get more amount of refrigeration effect, hence
((COP)modified cycle > ((COP)original cycle)
Both cycle required same amount of work input but by use of Isentropic expander, we can get more amount of refrigeration effect, hence
((COP)modified cycle > ((COP)original cycle)
Most Upvoted Answer
Consider an ideal vapor compression refrigeration cycle. If the thrott...
Vapor compression refrigeration cycle :
Both cycle required same amount of work input but by use of Isentropic expander, we can get more amount of refrigeration effect, hence
((COP)modified cycle > ((COP)original cycle)
Both cycle required same amount of work input but by use of Isentropic expander, we can get more amount of refrigeration effect, hence
((COP)modified cycle > ((COP)original cycle)
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Consider an ideal vapor compression refrigeration cycle. If the thrott...
Explanation:
Original Cycle:
- In an ideal vapor compression refrigeration cycle, the throttling process is typically used to reduce the pressure of the refrigerant.
- The original cycle consists of four processes: compression, condensation, expansion (throttling), and evaporation.
- The coefficient of performance (COP) of the original cycle is determined by the ratio of the refrigerating effect to the work input.
Modified Cycle:
- In the modified cycle, the throttling process is replaced by an isentropic expansion process.
- Isentropic expansion results in lower temperature and pressure of the refrigerant compared to throttling.
- Since the expansion process is isentropic, there is no entropy generation and the process is reversible.
Comparison:
- The isentropic expansion process is more efficient than throttling as it requires less work input.
- The lower work input leads to an increase in the coefficient of performance (COP) of the modified cycle compared to the original cycle.
- Therefore, the statement that the coefficient of performance is higher than that of the original cycle is true for the modified cycle.
By replacing the throttling process with isentropic expansion, the efficiency of the vapor compression refrigeration cycle is improved, resulting in a higher coefficient of performance.
Original Cycle:
- In an ideal vapor compression refrigeration cycle, the throttling process is typically used to reduce the pressure of the refrigerant.
- The original cycle consists of four processes: compression, condensation, expansion (throttling), and evaporation.
- The coefficient of performance (COP) of the original cycle is determined by the ratio of the refrigerating effect to the work input.
Modified Cycle:
- In the modified cycle, the throttling process is replaced by an isentropic expansion process.
- Isentropic expansion results in lower temperature and pressure of the refrigerant compared to throttling.
- Since the expansion process is isentropic, there is no entropy generation and the process is reversible.
Comparison:
- The isentropic expansion process is more efficient than throttling as it requires less work input.
- The lower work input leads to an increase in the coefficient of performance (COP) of the modified cycle compared to the original cycle.
- Therefore, the statement that the coefficient of performance is higher than that of the original cycle is true for the modified cycle.
By replacing the throttling process with isentropic expansion, the efficiency of the vapor compression refrigeration cycle is improved, resulting in a higher coefficient of performance.
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Consider an ideal vapor compression refrigeration cycle. If the throttling process is replaced by an isentropic expansion process, keeping all the other processes unchanged, which one of the following statements is true for the modified cycle?[2019]a)Coefficient of performance is higher than that of the original cycle.b)Coefficient of performance is the same as that of the original cycle.c)Coefficient of performance is lower than that of the original cycle.d)Refrigerating effect is lower than that of the original cycle.Correct answer is option 'A'. Can you explain this answer?
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Consider an ideal vapor compression refrigeration cycle. If the throttling process is replaced by an isentropic expansion process, keeping all the other processes unchanged, which one of the following statements is true for the modified cycle?[2019]a)Coefficient of performance is higher than that of the original cycle.b)Coefficient of performance is the same as that of the original cycle.c)Coefficient of performance is lower than that of the original cycle.d)Refrigerating effect is lower than that of the original cycle.Correct answer is option 'A'. 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 Consider an ideal vapor compression refrigeration cycle. If the throttling process is replaced by an isentropic expansion process, keeping all the other processes unchanged, which one of the following statements is true for the modified cycle?[2019]a)Coefficient of performance is higher than that of the original cycle.b)Coefficient of performance is the same as that of the original cycle.c)Coefficient of performance is lower than that of the original cycle.d)Refrigerating effect is lower than that of the original cycle.Correct answer is option 'A'. 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 Consider an ideal vapor compression refrigeration cycle. If the throttling process is replaced by an isentropic expansion process, keeping all the other processes unchanged, which one of the following statements is true for the modified cycle?[2019]a)Coefficient of performance is higher than that of the original cycle.b)Coefficient of performance is the same as that of the original cycle.c)Coefficient of performance is lower than that of the original cycle.d)Refrigerating effect is lower than that of the original cycle.Correct answer is option 'A'. Can you explain this answer?.
Consider an ideal vapor compression refrigeration cycle. If the throttling process is replaced by an isentropic expansion process, keeping all the other processes unchanged, which one of the following statements is true for the modified cycle?[2019]a)Coefficient of performance is higher than that of the original cycle.b)Coefficient of performance is the same as that of the original cycle.c)Coefficient of performance is lower than that of the original cycle.d)Refrigerating effect is lower than that of the original cycle.Correct answer is option 'A'. 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 Consider an ideal vapor compression refrigeration cycle. If the throttling process is replaced by an isentropic expansion process, keeping all the other processes unchanged, which one of the following statements is true for the modified cycle?[2019]a)Coefficient of performance is higher than that of the original cycle.b)Coefficient of performance is the same as that of the original cycle.c)Coefficient of performance is lower than that of the original cycle.d)Refrigerating effect is lower than that of the original cycle.Correct answer is option 'A'. 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 Consider an ideal vapor compression refrigeration cycle. If the throttling process is replaced by an isentropic expansion process, keeping all the other processes unchanged, which one of the following statements is true for the modified cycle?[2019]a)Coefficient of performance is higher than that of the original cycle.b)Coefficient of performance is the same as that of the original cycle.c)Coefficient of performance is lower than that of the original cycle.d)Refrigerating effect is lower than that of the original cycle.Correct answer is option 'A'. Can you explain this answer?.
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ample number of questions to practice Consider an ideal vapor compression refrigeration cycle. If the throttling process is replaced by an isentropic expansion process, keeping all the other processes unchanged, which one of the following statements is true for the modified cycle?[2019]a)Coefficient of performance is higher than that of the original cycle.b)Coefficient of performance is the same as that of the original cycle.c)Coefficient of performance is lower than that of the original cycle.d)Refrigerating effect is lower than that of the original cycle.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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