IntroductionDiesel power plants produce 2 to 50MW of power. These types of power plants are used to supply electricity for small industries and hospitals and also for theaters.High cost for diesel is one of the reason for these plants are not being used in large types of electricity production.They used to deliver continues electricity.They are suitable for mobile power generations and they are widely used in railways and ships
Heat enginesAny type of engine or device that converts heat energy to mechanical energy is called Heat engineIf combustion takes place within the working fluid of the engine then it’ called an Internal Combustion Engine.In this process fluid will get contaminated by the combustion productsIn an External Combustion Engine working fluid will get energy from the boilers. Within these boilers fossil fuels or any other kind of fuel will be burnt. Therefore the working fluid will not get contact with combustion products.
Classification of IC Engines1. According to cycle of operations•Two stroke engine•Four stroke engine2. According to cycle of combustion•Otto cycle engine•Diesel cycle engine•Dual combustion engine3. According to arrangement of cylinder•Horizontal engine•Vertical engine•V-Type engine•Radial engine4. According to their uses•Stationary engine•Portable engine•Marine engine•Automobile engine•Aero engine
5. According to fuel employed•Oil engine•Petrol engine•Gas engine6. According to method of ignition3•Spark engine•Compression engine7. According to speed of engine•Low speed•Medium speed•High speed