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Assertion (A): In a liquid-to-gas heat exchanger fins are provided in thegas side.  
Reason (R): The gas offers less thermal resistance than liquid
  • a)
    Both A and R are individually true and R is the correct explanation of A
  • b)
    Both A and R are individually true but R is not the correct explanation of A
  • c)
    A is true but R is false
  • d)
    A is false but R is true
Correct answer is option 'C'. Can you explain this answer?
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Assertion (A): In a liquid-to-gas heat exchanger fins are provided in ...
Ans. (c)
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Assertion (A): In a liquid-to-gas heat exchanger fins are provided in ...
Liquid-to-Gas Heat Exchanger and Fins

Liquid-to-gas heat exchangers are used to transfer heat from a liquid medium to a gas medium. In order to increase the heat transfer rate, fins are provided on the gas side of the heat exchanger. The fins increase the surface area for heat transfer, thereby improving the heat transfer coefficient.

Reasoning

The assertion that fins are provided in the gas side of the heat exchanger is true. However, the reason given that the gas offers less thermal resistance than liquid is not a correct explanation. This is because the thermal resistance of a medium depends on its thermal conductivity and thickness. The reason why fins are provided on the gas side is to increase the surface area for heat transfer, which in turn increases the convective heat transfer coefficient. Therefore, option C is the correct answer.

Conclusion

In summary, fins are provided on the gas side of a liquid-to-gas heat exchanger to increase the surface area for heat transfer and improve the convective heat transfer coefficient. The reason given that the gas offers less thermal resistance than liquid is not a correct explanation for the provision of fins.
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Assertion (A): In a liquid-to-gas heat exchanger fins are provided in thegas side.Reason (R): The gas offers less thermal resistance than liquida)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?
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