DIESEL POWER STATION

 DIESEL POWER STATION

WHEN A GENERATING STATION IN WHICH A DIESEL ENGINE IS USED AS THE PRIME MOVER FOR THE GENERATION OF ELECTRICAL ENERGY IS CALLED A DIESEL POWER STATION.

IN A DIESEL POWER STATION, A DIESEL ENGINE IS USED AS THE PRIME MOVER. THE DIESEL BURNS INSIDE THE ENGINE AND THE PRODUCTS OF THIS COMBUSTION ACT AS THE "WORKING FLUID" TO PRODUCE MECHANICAL ENERGY.

THEN THE DIESEL ENGINE DRIVES THE ALTERNATOR WHICH CONVERTS MECHANICAL ENERGY INTO ELECTRICAL ENERGY. AS THE GENERATION COST OF THIS DIESEL POWER STATION IS HIGHER, SO THE USE OF DIESEL POWER STATIONS IS LESS DUE TO HIGH MAINTENANCE, THESE DIESEL POWER STATIONS ARE ONLY USED TO PRODUCE SMALL POWER.

SCHEMATIC ARRANGEMENT OF DIESEL POWER STATION

AS PART OF DIESEL POWER PLANT IT CONSIST OF DIFFERENT GENERATING SET:-

1. FUEL SUPPLY SYSTEM

2. AIR INTAKE SYSTEM

3. EXHAUST SYSTEM

4. COOLING SYSTEM

5. LUBRICATING SYSTEM

6. ENGINE STARING SYSTEM

# FUEL SUPPLY SYSTEM

THE FUEL SUPPLY SYSTEMS CONSIST OF THE STORAGE TANK, FUEL PUMP, AND FUEL TANK. THEN THE FUEL OIL IS SUPPLIED AT THE PLANT SITE BY ROAD. THEN THE OIL IS STORED IN THE STORAGE TANK. FROM THIS TANK, OIL IS PUMPED TO A SMALLER ALL-DAY TANK AT DAILY OR SHORT INTERVALS. THEN THE FUEL OIL IS PASSED THROUGH STRAINERS TO REMOVE SUSPENDED IMPURITIES. THE CLEAN OIL IS INJECTED INTO THE ENGINE BY A FUEL INJECTION PUMP.

# AIR INTAKE SYSTEM

IN THIS AIR INTAKE SYSTEM SUPPLY OF AIR TO THE ENGINE IS NECESSARY FOR FUEL COMBUSTION. IT CONSIST OF PIPES FOR THE SUPPLY OF FRESH AIR TO THE ENGINE MANIFOLD. FILTERS ARE PROVIDED TO REMOVE DUST PARTICLES FROM THE AIR WHICH MAY ACT AS ABRASIVE IN THE ENGINE CYLINDER.

# EXHAUST SYSTEM

IN THE EXHAUST SYSTEM THE ENGINE TENDS TO EXHAUST GAS OUTSIDE THE BUILDING AND DISCHARGES IT INTO THE ATMOSPHERE. A SILENCER IS USUALLY INCORPORATED INTO THE SYSTEM TO REDUCE THE NOISE LEVEL.

# COOLING SYSTEM

WHEN THE HEAT RELEASED BY THE BURNING OF FUEL IN THE ENGINE CYLINDER IS PARTIALLY CONVERTED TO WORK. THE REMAINING PART OF THE HEAT PASSES THROUGH THE CYLINDER WALLS, PISTONS, RINGS, ETC, AND MAY CAUSE DAMAGE TO THE SYSTEM. IN ORDER TO KEEP THE TEMPERATURE OF THE ENGINE PARTS WITHIN THE SAFE OPERATING LIMITS, COOLING IS PROVIDED. THE COOLING SYSTEM CONSISTS OF A WATER SOURCE, PUMP, AND COOLING TOWERS. THE PUMP CIRCULATES WATER THROUGH THE CYLINDER AND HEAT JACKET. THE WATER TAKES AWAY HEAT FROM THE ENGINE AND ITSELF BECOMES HOT. THE HOT WATER I COOLED BY COOLING TOWERS AND IS RECIRCULATED FOR COOLING.

# LUBRICATING SYSTEM

IN A LUBRICATING SYSTEM, THE SYSTEM MINIMIZES THE WEAR OF RUBBING SURFACES OF THE ENGINE. IT COMPRISES OF LUBRICATING OIL TANK PUMP, FILTER, AND OIL COOLER. THE LUBRICATING OIL IS DRAWN FROM THE LUBRICATING OIL TANK BY THE PUMP AND IS PASSED THROUGH FILTERS TO REMOVE IMPURITIES. THEN THE PURE LUBRICATING OIL IS DELIVERED TO THE POINTS WHICH REQUIRE LUBRICATION.

# ENGINE STARTING SYSTEM

ENGINE STARTING SYSTEM IS AN TYPE OF ARRANGEMENT TO ROTATE THE ENGINE INITIALLY WHILE STARTING UNTIL FIRING STARTS AND THE UNIT RUNS WITH ITS OWN POWER. SMALL SETS ARE STARTED MANUALLY BY HANDLES BUT FOR LONGER UNITS, COMPRESSED AIR IS USED FOR STARTING. WHEN AIR AT HIGH PRESSURE IS ADMITTED TO A FEW CYLINDERS, MAKING THEM AT-ACT AS RECIPROCATING AIR MOTORS TO TURN OVER THE ENGINE SHAFT. THEN THE FUEL IS ADMITTED TO THE REMAINING CYLINDERS WHICH MAKES THE ENGINE TO START UNDER ITS OWN POWER.