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KHUDKIBOOK
ADVANCED CRYOCOOLERS
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3731002
Code: 3731002
Credits: 3
Semester 3
M(E
Advanced Cryocoolers
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GTU Previous Year Papers
Advanced Cryocoolers Syllabus — Unit-wise Content
The official GTU curriculum for Advanced Cryocoolers (subject code 3731002) as prescribed for M(E · Semester 3 divides the course into 10 units, covering 74 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (3731002)Unit 1 Cryo coolers
- Classification of cryo coolers
- Working of cryo coolers
- Selection of cryocooler and comparison of different types of cryo coolers
- Ideal working Cycles
- Important parameters –mass
- acoustic noise
- electromagnetic interface
- operating life
- Technical parameters - cooling effect
- compressor power requirement
- cooling water requirement
- service requirement of compressor
- Vibration control
- Steady flow and oscillating flow cryo coolers
- Different types of at exchangers
- Applications of Cryo coolers –military
- police and security
Unit 2 Gifford McMahon Cryo cooler
- Advantages and disadvantages of G-M cryo cooler
- Design of two stage G-M cryo cooler
- Efficiency of pressure oscillators
- improved valve timing
- Application of GM Cooler
Unit 3 Stirling Cryo cooler
- First order analysis Stirling cycle
- Second order analysis
- Third order analysis
- Loss analysis
- Comparison of Stirling and Carnot cycle
- Design and optimization of Stirling Cryo coolers
- Performance and reliability improvement of low cost Stirling cooler
- Analysis of Stirling Cycle
- Multi stage Cryo cooler
- hybrid cooler
- Miniature Stirling cryocooler
- Linear compressor design
Unit 4 Pulse tube Cryo coolers
- Advantages and disadvantages of pulse tube cryo cooler
- Geometry of pulse tube U-tube
- Two stage pulse tube refrigerator design
- Thermoacoustically driven pulse tube refrigerator
- Different methods of analysis
- Phasor analysis
- Oscillating flow behaviour of PTR, Valve timing effect on Performance of 4K pulse tube cryo cooler
- Low vibration flexure bearing compressor
- Miniature 50 k to 80 K space application of PTR, Experimental characteristics of PTR, Effect of D.C. flow
- Active phase control of Stirling type PTR, Expansion efficiency considering shuttle heat transfer
- Co-axial PTR for high Tc- SQUID
- Characteristics of Double inlet PTR, Experimental study and analysis of components of orifice pulse tube refrigerator
- Theoretical model of G-M type pulse tube
- High frequency pulse tube cryo cooler with base temperature Subject Code: 3731002 w.e.f
- AY 2018-19 below 20 K, Performance of single stage pulse tube
- Some of the phase shifting types of two stage G-M type pulse tube refrigerator
- Small He3 PTR Multi stage pulse tube cooler 4 K technology
Unit 5 Space pulse tube Cryo cooler development
- Miniature pulse tube cryo cooler for space
- High frequency pulse tube cooler
- High performance cryo cooler compressor
- Vibration reduction in balanced linear compressor
- G-M type pulse tube cryo cooler
Unit 6 Regenerator material analysis and material development Ductile, High heat
- capacity magnetic regenerator alloy material
- Manufacturing considerations of rare earth powder used in cryo cooler
Unit 7 Dilution Refrigerator
- Electrically driven 4 He circulating dilution refrigerator
- Progress on microgravity Dilution refrigerator
Unit 8 J-T Cooler
- Advantages and disadvantages of J-T cooler
- Recent advances – Mixed refrigerant
- Sorption compressor
- Electrochemical compressor
- Mixture properties
- Cool down characteristics miniature J-T cooler
- Liquefaction of nitrogen using mixed refrigerant
- Further development
- Liquefaction of other gases
- Modern trends in throttle cryo cooler operating with mixed gas
Unit 9 Magnetic refrigerator
- Magnetic refrigerator –Its development and its utility in magnetic hydrogen liquefier
Unit 10 Government Cryo cooler development program Military space cryogenic
- cooling requirement
- Linear drive Cryo cooler for weapon system
- Cryo cooler reliability
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