NIT Agartala Refrigeration & Air Conditioning Syllabus
ME –501 REFRIGERATION & AIR CONDITIONING (3-1-0) 4
Principles of Refrigeration & Refrigeration cycle: Reversed Carnot Cycle, Steam Jet Refrigeration System, Refrigerants-Designation and trade name, Physical, Chemical & Thermodynamic properties of principal refrigerants. Vapour Compression Refrigeration Cycle. Deviation from actual cycle. Air Refrigeration Systems-Bell-Coleman Cycle, evaporation & bootstrap evaporation type, T-S & p-h diagrams, COP.
Absorption System of Refrigeration: Electrolux Refrigerator. Refrigeration Equipments—Types of Compressors, Condensers & Evaporators. Flash chamber multi compressor, multi evaporator, production of load, temperature. Electric control. Surface requirements for evaporators & condensers. refrigeration piping, materials, moisture removal.
Refrigeration controls—liquid refrigerant control automatic & thermostatic expansion valves, float valves, section line controls.
Application of Refrigeration—ice making, food preservation, household refrigerators, cold storage.
Psychrometrics: Atmospheric air, air and humidity, terms and calculation, psychrometric chart, air humidity processes, humidification &dehumidification, By-pass factor, summer and winter air load, housing system.
Comfort air conditioning: effective temperature, comfort chart, ventilation requirements.
Solar Radiation: Distribution of solar radiation, direct and diffuse radiation, earth sun angles and their relationships, direct solar radiation on a vertical, horizontal, inclined surface, heat gain through glass, effect of shading devices, heat transfer in building structures through walls and roofs. Empirical methods to evaluate heat transfer through walls and roofs, infiltration, passive heating and cooling of building. Air distribution system, basic theory, air duct losses, design of air duct system, air delivery and distribution.
Air conditioning systems: unit conditioners, central air conditioning, control of air conditioning apparatus, space cooling load calculation, heat transmission through barriers, solar radiation, infiltration, occupants, electric lights &appliances, product load, outside air and ventilation, SHR By-pass factor, ADP, refrigeration load. Fluid flow and pressure loss, equivalent length system & duct design, air distribution system, basic control system. Solar heating and cooling, air conditioning through solar system, building designs for air conditioning
1. Arora,C.P.,“Refrigeration and Air Conditioning”,2nd ed., Tata McGraw-Hill2000.
2. Ananth Narayanan, “Basic Refrigeration & Air Conditioning”, Tata McGraw-Hill
3. Khurmi, Gupta, “Refrigeration and Air Conditioning”, S. Chand Publishers