M.Tech I Year II Semester (R17)
Air Conditioning Systems: All water, All air, air water system. Unitary System, window air conditioner, split and central air conditioning system, cooling load calculations - occupancy load, lighting load, appliance load, product load, difference between summer & winter load calculations.
Air Distribution: Room Air distribution - types of supply air outlets, mechanism of flow through outlets, selection and location of outlets, general considerations. Distribution patterns of outlets - ducts- Definition and types - materials for ducts and its specification, friction loss in ducts - grills, diffusers, registers, rectangular equivalent of circular duct. Air duct designs, duct construction, Duct design procedure.
Thermal Insulation for A/C System: Method of heat transfer - desired properties of ideal insulating materials - types of insulating materials. Heat transfer through insulation - economic thickness of insulation. Insulation of heated buildings - Insulation for cooling building and cold storage - pipe insulation.
Air Conditioning Apparatus: Fans and blowers - types of fans- fan characteristic- centrifugal fans, axial fans -- fan arrangements, filters, sources of noise and control, static pressure calculation for selection of motor and fan. Water supply pipe sizing calculations - piping network for supply and return water line - pipe fittings - lining and insulation - piping system as per ASHRAE standards
Applications: Air conditioning systems for automobiles (cars, buses etc) - Air conditioning systems for (trains, ships, aircraft) - Special applications - Computers, hospitals, cold storages, printing, textiles and leather industries.
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