Syllabus - Refrigeration and Air Conditioning (AN 603 (C))

Agriculture Engineering

Refrigeration and Air Conditioning (AN 603 (C))

V-Semester

Unit I

Laws of thermodynamics. Carnot cycle and reversed Carnot cycle. Principles of refrigeration, units, terminology, production of low temperatures, air refrigerators working on reverse Carnot cycle and Bell Coleman cycle. Vapour refrigeration-mechanism, P-V, P-S, P-H diagrams.

Unit II

Vapour compression cycles, dry and wet compression, super cooling and sub cooling. Types of refrigeration systems- Electrolux and steam jet refrigeration systems. Components of mechanical refrigerator. Study of compressors, condensers, expansion devices and evaporators. Vapour absorption refrigeration system.

Unit III

Methods of refrigeration. Common refrigerants and their properties. Design calculations for refrigeration system. Cold storage plants. Thermodynamic properties of moist air, perfect gas relationship for approximate calculation, adiabatic saturation process, wet bulb temperature and its measurement, psychometric chart and its use, elementary psychometric process.

Unit IV

Air conditioning – principles –Type and functions of air conditioning, physiological principles in air conditioning, air distribution and duct design methods, fundamentals of design of complete air conditioning systems – humidifiers and dehumidifiers – cooling load calculations, types of air conditioners – applications.

Course Objective

To impart the concept of the basic principles, working, scientific analysis and system components of different types of refrigeration and air conditioning systems.

Course Outcome

Students understand the concept of the basic principles, working and system components of various types of refrigeration and air conditioning systems and also have knowledge of various refrigerants, their properties, selection criteria and environmental aspects.

Practicals

Reference Books

  • Ballney P. L. 1994. Thermal Engineering. Khanna Publishers, New Delhi.

  • Khurmi R S. 1992. Engineering Thermodynamics. S Chand and Co. Ltd., Ram Nagar, New Delhi.

  • Kothandaraman C P Khajuria P R and Arora S C. 1992. A Course in Thermodynamics and Heat Engines. DhanpetRai and Sons, NaiSarak, New Delhi.

  • Mathur M L and Mehta F S. 1992. Thermodynamics and Heat Power Engineering. DhanpatRai and Sons,NaiSarak, New Delhi.

  • Nag P K.1995. Engineering Thermodynamics. Tata McGraw Hill Publishing Co.Ltd., 12/4 Asaf Ali Raod, New Delhi.