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G192179 Pages:2

With a neat sketch and T-s diagram explain the working of a Claude
refrigeration system. Derive an expression for COP assuming that expander
work is utilized to compress the gas.

Draw the T-s diagram and derive an expression for COP of a thermodynamically
ideal isobaric source cold - gas refrigerator.

With the help of a schematic and T-s diagram explain the working of a Phillips

refrigerator. Derive an expression for its COP.

PART C

Answer any four full questions, each carries 10 marks.
With a neat sketch explain the functions of different components of a typical
cryogenic liquid storage vessel.
Explain in detail the different types of insulations used in cryogenic equipments.
Explain the various features of cryogenic fluid transfer systems.
With a neat sketch explain the working of a constant-volume gas thermometer.
Explain with a neat diagram the working of a capacitance type liquid level
gauge.
Explain the working of i) Turbine flow meter ii) Vapour pressure thermometer

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