JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

UNIT - I

Introduction to Cryogenic Systems: Mechanical Properties at low temperatures. Properties of Cryogenic Fluids. Gas Liquefaction: Minimum work for liquefaction. Methods to protect low temperature. Liquefaction systems for gages other than Neon. Hydrogen and Helium.

UNIT - II

Liquefaction Systems for Neon, Hydrogen and Helium: Components of Liquefaction systems. Heat exchangers. Compressors and expanders. Expansion valve, Losses in real machines.

UNIT - III

Gas Separation and Purification Systems: Properties of mixtures, Principles of mixtures, Principles of gas separation, Air separation systems.

UNIT - IV

Cryogenic Refrigeration Systems: Working Medium, Solids, Liquids, Gases, Cryogenic fluid storage & transfer, Cryogenic storage systems, Insulation, Fluid transfer mechanisms, Cryostat, Cryo Coolers

UNIT - V

Applications: Space technology, In-Flight air separation and collection of LOX, Gas industry, Biology, Medicine, Electronics.

REFERENCES:

• 1. Cryogenic Systems/ R.F. Barren/ Oxford University Press
• 2. Cryogenic Engineering- Thomas Flynn- CRC Press-2nd Edition
• 3. Cryogenic Research and Applications: Marshal Sitting/ Von Nostrand/ Inc. New Jersey
• 4. Cryogenic Heat Transfer/ R.F.Baron
• 5. Cryogenic Engineering Edit / B.A. Hands/ Academic Press, 1986
• 6. Cryogenic Engineering/ R.B. Scottm Vin Nostrand/ Inc. New Jersey, 1959
• 7. Experimental Techniques in Low Temperature Physics- O.K. White, Oxford Press, 1968
• 8. Cryogenic Process Engineering/ K. D. Timmerhaus & TM Flynn/ Plenum Press, 1998
• 9. Hand Book of Cryogenic Engineering – J.G. Weisend –II, Taylor and Francis, 1998