Basics of Mechanical Engineering
Objectives
• To impart the basics of thermodynamics, heat engines, thermal power plants, hydraulic machines and power plants, renewable energy power plants etc.
• To impart the basics of Power transmission elements and basic manufacturing processes.
• Only preliminary understanding of the subject is to be imparted, as this is a basic Course
.
Module I (Basic Thermodynamics and applications) (16 hours)
Basic Thermodynamics- Concept of temperature, Zeroth law, heat and work, First law, Internal Energy concept, Second law (Statement and explanation only) –Heat engine, refrigerator and heat pump _ Concepts of entropy - Thermodynamic cycles -Carnot cycle, Otto cycle, Diesel cycle, Brayton cycle.
Internal Combustion Engines – Classification - SI and CI engines, Two stroke and Four stroke engines, Carburetted and MPFI engines, CRDI engines. Working principles only. Power plants –layout and working of Gas turbine Power plants, Steam power plants, Diesel power plants and Nuclear power plants.
Vapour compression and Air refrigeration systems – Concept of Ton of Refrigeration and COP, simple cycle and schematic diagram only. Brayton cycle- derivation of efficiency of the cycle – simple problems
Renewable and non –renewable sources of energy – Fuels and their properties – coal, LSHS, FO, LNG , HSD, Biodiesel and biogas – layout and working principles of solar, wind, tidal, OTEC, Geothermal, power plants.
Module II (Hydraulic machines and Manufacturing systems) (14 hours)
Hydel power plants and pumps.- Hydraulic Turbines - Classification, construction, working and applications. Hydraulic pumps - Classification, Reciprocating and centrifugal pumps, Priming, multistage pumps, pumps like vane, gear and jet pumps (working principle and applications only).
Basic Power transmission systems- Belt and chain drives, expressions for power transmitted, belt tension, & coefficient of friction relationships- gears and gear trains - Rack & pinion, Slider crank mechanism, eccentric mechanism (basics only)
Basic manufacturing processes- Casting (Sand and die casting processes), Forging (open and closed die forging & net shape forging), Rolling (2 and 3 roll process), Extrusion (Direct, indirect and hydrostatic extrusion), Welding (SMAW & Oxy fuel welding)
Reference Books
1. A textbook on Internal Combustion Engines – Mathur and Sharma, Dhanpat Rai & Sons
2. Elements of Mechanical Engineering – Roy and Choudhary
3. Power plant engineering – P.K. Nag, Tata Mc Graw Hill
4. Basic Mechanical Engineering – Benjamin.
