Gas Liquefaction and Refrigeration Systems - Cryogenic Engineering Mechanical Engineering Notes | EduRev

Mechanical Engineering : Gas Liquefaction and Refrigeration Systems - Cryogenic Engineering Mechanical Engineering Notes | EduRev

 Page 1


1
17 17
Page 2


1
17 17
2
Prof. M D Atrey, Department of Mechanical Engineering, IIT Bombay
• In the earlier lecture, we have seen Kapitza & 
Heylandt systems which are the modifications of 
the Claude System.
• Collins system is an extension of the Claude 
system to reach lower temperatures (for example 
LHe) wherein two to six expansion devices are 
used.
• For a given pressure condition, the yield y and 
W/m
f
depends on the fraction of gas diverted 
through expander 1 and 2 (x
1
and x
2
) and the 
temperature at the inlet to the expanders.
Earlier Lecture Earlier Lecture
Page 3


1
17 17
2
Prof. M D Atrey, Department of Mechanical Engineering, IIT Bombay
• In the earlier lecture, we have seen Kapitza & 
Heylandt systems which are the modifications of 
the Claude System.
• Collins system is an extension of the Claude 
system to reach lower temperatures (for example 
LHe) wherein two to six expansion devices are 
used.
• For a given pressure condition, the yield y and 
W/m
f
depends on the fraction of gas diverted 
through expander 1 and 2 (x
1
and x
2
) and the 
temperature at the inlet to the expanders.
Earlier Lecture Earlier Lecture Outline of the Lecture Outline of the Lecture
3
Prof. M D Atrey, Department of Mechanical Engineering, IIT Bombay
Topic : Gas Liquefaction and Refrigeration 
Systems (contd)
• Components of Gas Liquefaction and 
Refrigeration Systems
• Heat Exchangers
• Compressors and Expanders
• LN
2
and LHe plant videos
• System Comparison
• Summary
Page 4


1
17 17
2
Prof. M D Atrey, Department of Mechanical Engineering, IIT Bombay
• In the earlier lecture, we have seen Kapitza & 
Heylandt systems which are the modifications of 
the Claude System.
• Collins system is an extension of the Claude 
system to reach lower temperatures (for example 
LHe) wherein two to six expansion devices are 
used.
• For a given pressure condition, the yield y and 
W/m
f
depends on the fraction of gas diverted 
through expander 1 and 2 (x
1
and x
2
) and the 
temperature at the inlet to the expanders.
Earlier Lecture Earlier Lecture Outline of the Lecture Outline of the Lecture
3
Prof. M D Atrey, Department of Mechanical Engineering, IIT Bombay
Topic : Gas Liquefaction and Refrigeration 
Systems (contd)
• Components of Gas Liquefaction and 
Refrigeration Systems
• Heat Exchangers
• Compressors and Expanders
• LN
2
and LHe plant videos
• System Comparison
• Summary
Introduction Introduction
4
Prof. M D Atrey, Department of Mechanical Engineering, IIT Bombay
• In the earlier lectures, we have seen various Gas 
Liquefaction and Refrigeration systems.
• The various components like compressors, 
expanders and heat exchangers are critical to the 
performance of the system.
• The processes that occur in these components are 
irreversible and deteriorate the performance of the 
system.
• Hence, there is a need to study about the various 
components that are used in these systems.
Page 5


1
17 17
2
Prof. M D Atrey, Department of Mechanical Engineering, IIT Bombay
• In the earlier lecture, we have seen Kapitza & 
Heylandt systems which are the modifications of 
the Claude System.
• Collins system is an extension of the Claude 
system to reach lower temperatures (for example 
LHe) wherein two to six expansion devices are 
used.
• For a given pressure condition, the yield y and 
W/m
f
depends on the fraction of gas diverted 
through expander 1 and 2 (x
1
and x
2
) and the 
temperature at the inlet to the expanders.
Earlier Lecture Earlier Lecture Outline of the Lecture Outline of the Lecture
3
Prof. M D Atrey, Department of Mechanical Engineering, IIT Bombay
Topic : Gas Liquefaction and Refrigeration 
Systems (contd)
• Components of Gas Liquefaction and 
Refrigeration Systems
• Heat Exchangers
• Compressors and Expanders
• LN
2
and LHe plant videos
• System Comparison
• Summary
Introduction Introduction
4
Prof. M D Atrey, Department of Mechanical Engineering, IIT Bombay
• In the earlier lectures, we have seen various Gas 
Liquefaction and Refrigeration systems.
• The various components like compressors, 
expanders and heat exchangers are critical to the 
performance of the system.
• The processes that occur in these components are 
irreversible and deteriorate the performance of the 
system.
• Hence, there is a need to study about the various 
components that are used in these systems.
5
Prof. M D Atrey, Department of Mechanical Engineering, IIT Bombay
• Heat exchangers (HX) are 
the most critical 
components of any 
liquefaction system.
• They are used to conserve 
cold by heat exchange 
between the high pressure 
hot gas and the low 
pressure cold gas.
• We know that when       
the L–H system gives y=0.
Heat Exchangers Heat Exchangers
0.06
0.02
0.75
0.80 0.85 0.90 0.95 1
0
0.04
0.12
0.08
0.1
y
?
Working Fluid : Air
Pressure : 1 bar ? 200 bar 
Temperature : 300 K
Linde – Hampson System
0.85 ? ?
Read More
Offer running on EduRev: Apply code STAYHOME200 to get INR 200 off on our premium plan EduRev Infinity!

Related Searches

past year papers

,

Important questions

,

Exam

,

Previous Year Questions with Solutions

,

Gas Liquefaction and Refrigeration Systems - Cryogenic Engineering Mechanical Engineering Notes | EduRev

,

Gas Liquefaction and Refrigeration Systems - Cryogenic Engineering Mechanical Engineering Notes | EduRev

,

Sample Paper

,

Extra Questions

,

MCQs

,

mock tests for examination

,

practice quizzes

,

Semester Notes

,

Gas Liquefaction and Refrigeration Systems - Cryogenic Engineering Mechanical Engineering Notes | EduRev

,

pdf

,

video lectures

,

Summary

,

Objective type Questions

,

Free

,

study material

,

shortcuts and tricks

,

Viva Questions

,

ppt

;