Transcription of 9. DG SET SYSTEM
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9. DG SET SYSTEM
9. DG SET SYSTEM165 Bureau of Energy EfficiencySyllabusDiesel Generating SYSTEM :Factors affecting selection, Energy performance assessment ofdiesel conservation IntroductionDiesel engine is the prime mover, which drives an alternator to produce electrical energy. Inthe diesel engine, air is drawn into the cylinder and is compressed to a high ratio (14:1 to25:1). During this compression, the air is heated to a temperature of 700 900 C. A meteredquantity of diesel fuel is then injected into the cylinder, which ignites spontaneously becauseof the high temperature. Hence, the diesel engine is also known as compression ignition (CI)engine. DG set can be classified according to cycle type as: two stroke and four stroke.
TABLE 9.1 COMPARISON OF DIFFERENT TYPES OF CAPTIVE POWER PLANT Description Units Combined Conventional Diesel Engine GT & ST Steam Plant Power Plants Thermal Efficiency % 40 – 46 33 – 36 43 – 45 Initial Investment of Rs./kW 8,500 – 10,000 15,000 – 18,000 7,500 – 9,000 Installed Capacity
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