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A refrigeration plant for food storage operates as a reversed carnot heat engine cycle. The store is to be maintained at -50C and the heat transfer from the store to the cycle is at the rate of 5 kW. If heat is transferred from the cycle to the atmosphere at a temperature of 250C, the power required to drive the plant is ____kW
 
(Important - Enter only the numerical value in the answer)
    Correct answer is between '0.5,0.6'. Can you explain this answer?
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    A refrigeration plant for food storage operates as a reversed carnot h...
    Answer is (0.5 - 0.6 kW)
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    A refrigeration plant for food storage operates as a reversed carnot h...
    Solution:

    Given data:

    Temperature of the store, T1 = -50°C
    Heat transfer from the store to the cycle, Q1 = 5 kW
    Temperature of the atmosphere, T2 = 25°C

    The Carnot cycle efficiency is given by:

    η = 1 - T1/T2

    η = 1 - (-50 + 273)/(25 + 273)

    η = 0.73

    The power required to drive the plant is given by:

    P = Q1/η

    P = 5/0.73

    P = 6.85 kW

    Therefore, the power required to drive the plant is 6.85 kW. However, the answer options given are between 0.5 and 0.6 kW, which is not possible. It is possible that there was a mistake in the answer options provided.
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    Community Answer
    A refrigeration plant for food storage operates as a reversed carnot h...
    Cop=(5/W)=(268/298-268) then you will get W value.
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    A refrigeration plant for food storage operates as a reversed carnot heat engine cycle. The store is to be maintained at -50C and the heat transfer from the store to the cycle is at the rate of 5 kW. If heat is transferred from the cycle to the atmosphere at a temperature of 250C, the power required to drive the plant is ____kW(Important - Enter only the numerical value in the answer)Correct answer is between '0.5,0.6'. Can you explain this answer?
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    A refrigeration plant for food storage operates as a reversed carnot heat engine cycle. The store is to be maintained at -50C and the heat transfer from the store to the cycle is at the rate of 5 kW. If heat is transferred from the cycle to the atmosphere at a temperature of 250C, the power required to drive the plant is ____kW(Important - Enter only the numerical value in the answer)Correct answer is between '0.5,0.6'. 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 refrigeration plant for food storage operates as a reversed carnot heat engine cycle. The store is to be maintained at -50C and the heat transfer from the store to the cycle is at the rate of 5 kW. If heat is transferred from the cycle to the atmosphere at a temperature of 250C, the power required to drive the plant is ____kW(Important - Enter only the numerical value in the answer)Correct answer is between '0.5,0.6'. 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 refrigeration plant for food storage operates as a reversed carnot heat engine cycle. The store is to be maintained at -50C and the heat transfer from the store to the cycle is at the rate of 5 kW. If heat is transferred from the cycle to the atmosphere at a temperature of 250C, the power required to drive the plant is ____kW(Important - Enter only the numerical value in the answer)Correct answer is between '0.5,0.6'. Can you explain this answer?.
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