ME 350: Refrigeration and Air Conditioning


Refrigerators and Air Conditioners have become a vital part of our lives and it is impossible to imagine a day without them. This course RAC provides some idea about the basic working principles and complexity that lies behind making these devices. Some part in brief of this course is also covered in Applied Thermodynamics (ME316) runs in parallel with this course.


This course gives some idea about the wide range of applications and devices used for refrigeration and air conditioning. Air conditioning requirements in a Plane at an altitude of 10000 m from ground in temperatures of -50 degree C and low Oxygen content are much different from the Air conditioning requirements in a normal house. Refrigeration requirements in hotels and restaurants and vehicles transporting frozen food items are not the same as household ones. Refrigeration systems used in such situations are all covered in the course. The course in not about designing the refrigerators and more about the working of RAC systems. This course involves concepts of Thermodynamics, Heat Transfer, App thermo, and also from Chemical Engineering.


  • Introduction to Refrigeration
  • Brayton Cycle
  • Air Conditioning in Planes
  • Vapor Compression systems
  • Vapor Absorption system
  • Natural refrigeration system
  • Psychrometry
  • Air Conditioning

Online Resources


Reference Book : Refrigeration and Air Conditioning by C.P. Arora

Attendance Policy : No Compulsory attendance


  • Two Quizzes (20%) both after Mid Sems
  • Mid Sem (30%)
  • End Sem (50%)

The exams are simple in general, and cover only numerical problems, that are very similar to the tutorial problems.

Some important points about the Course

(Hold true if the course is being taken Prof. S.L. Bapat)

  • Most of the teaching is on the board, so regular notes be made and maintained
  • The course has a lot of things similar to the Applied Thermodynamics, which runs in parallel with these course. So taking the two courses together helps a lot in both.
  • Going to the classes is enough and no extra efforts need to be put in afterwards.

(Written by Lavish Ordia)


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