GANPAT UNIVERSITY FACULTY OF ENGINEERING & TECHNOLOGY Programme Bachelor of Technology Branch/Spec. Automobile Engineering Semester VI Version 1.0.0.0 Effective from Academic Year 2019-20 Effective for the batch Admitted in June 2017 Subject code 2AE604 Subject Name Air Conditioning and Refrigeration Teaching scheme Examination scheme (Marks) (Per week) Lecture(DT) Practical(Lab.) Total CE SEE Total L TU P TW Credit 3 0 1 0 4 Theory 40 60 100 Hours 3 0 2 0 5 Practical 30 20 50 Pre-requisites: None Learning Outcome: Learning Outcomes: After completion of this course, student will be able to  Basic Principles of refrigeration.  Types of Refrigerants.  Study of Psychometric.  Air Conditioning Systems Theory syllabus Unit Content Hrs. Introduction to Air conditioning & Refrigeration: H Methods of refrigeration. Vapour compression refrigeration system, Vapour absorption refrigeration

1 system, Applications of refrigeration & air conditioning, Automobile air conditioning, Air 6 conditioning for passengers, Isolated vehicles, Refrigerated transport vehicles, Applications related

with very low temperatures. Importance of Refrigerant Classification, properties, Selection criteria, Commonly used refrigerants, Alternative refrigerants, 1 2 Eco-friendly refrigerants, Applications of refrigerants, refrigerants used in automobile air 6 conditioning. Study of Psychometric charts 3 Psychometric properties, Tables/charts, Psychometric processes, Comfort charts, Factors affecting 10 comfort, Effective temperature, Ventilation requirements.. Air Conditioning Systems Classification, Layouts, Central / unitary air conditioning systems. System components like 4 8 compressor, Evaporator, Condenser, Expansion devices, Receiver dryer, Fan blowers, Heating system etc. Switch and electrical wiring circuit. Load Calculations & Analysis: Design considerations for achieving desired inside/room conditions with respect to prevailing outside/environment conditions. Factors affecting/contributing towards the load on refrigeration & air 5 6 conditioning systems. Cooling & heating load calculations. Load calculations for automobiles. Effect of air conditioning load on engine performance in terms of loss of available Peak Torque/Power and Fuel consumption. Air Distribution Systems: 6 Distribution ducting, Sizing, supply / return ducts, Type of grills, Diffusers, Ventilation, Air 8 noise level, Layout of duct systems for automobiles and their impact on load calculations. Air Routing & Temperature Control: Objectives of the dashboard re-circulating unit, Automatic temperature control, Controlling flow, 8 7 Control of air handling systems &air flow through - evaporator care.

Air Conditioning Service 8 Air conditioner maintenance & service - removing & replacing Components. Compressor service. 4 Testing, Diagnosis & trouble shooting of air conditioning system. Refrigerant gas charging procedure &. Servicing of heater system.

Air Conditioning Control 9 3 Common controls such as thermostats, Humidistat, Control dampers, Pressure cutouts, Relays. Practical content The term work shall be based on experimental and analytical work on topics mentioned above

Text Books 1 “Automotive Air-Conditioning”, by Crouse & Anglin –Mc Graw Hill Pub. 2 “Refrigeration and Air-conditioning”, by R.S. KHURMI – S.CHAND Publication Reference Books 1 “Automotive Air-Conditioning”, by Paul Weiser – Reston Publishing Co. 2 “Automatic Heating & Air Conditioning Systems” – Mitchell Information Services. 3 “Air Conditioning”, by Paul Lang, C.B.S. Publisher & Distributor, Delhi. 4 Principles of Refrigeration by Roy J. Dossat – Pearson Publication. ICT/ MOOCs references Introduction to Air conditioning & Refrigeration: https://nptel.ac.in/courses/112105128/ 1 https://nptel.ac.in/courses/112105128/43 Importance of Refrigerant 2 https://nptel.ac.in/courses/...6/12_Required_Properties_of_Idea_Refrigerants.pdf Study of Psychometric charts 3 https://nptel.ac.in/courses/112105129/pdf/R&AC%20Lecture%2027.pdf 4 Air Conditioning Systems nptel.ac.in/courses/112107208/35 Load Calculations & Analysis: https://nptel.ac.in/courses/112105128/42 5 https://nptel.ac.in/courses/112105128/40 6 Air Distribution Systems: https://nptel.ac.in/courses/112107208/32