@thesis{thesis,
		author={Hutauruk  Kristian D and Sudirmanto  Sudirmanto},
		title ={PENGARUH OVERHOUL TERHADAP EFISIENSI AIR PREHEATER DAN BOILER UNIT 3 DI PT. INDONESIA POWER UJP BANTEN 3 LONTAR},
		year={2019},
		url={http://156.67.221.169/621/},
		abstract={Boiler efficiency is affected by combustion. hot air is important for accelerating combustion in boilers, and drying coal in pulvurizers. The combustion air that enters the combustion chamber passes through the preheater to increase its temperature. Air preheater is a heat transfer device that transfers heat by utilizing the flue gas heat to raise the temperature of the incoming air. At Banten 3 Lontar power plant, Tri-sector type Water Preheater, Vertical Shaft, Regenerative Ljungstrom, with Pulvurized boiler type. With the Overhoul, the performance of the preheater water is increasing. The better the heat transfer in the air preheater element to the air. Then the better the combustion process that occurs in the boiler. With the Overhoul of the water preheater, it can increase the performance of the water preheater so that the efficiency of the boiler will also increase. It was found that the effectiveness of the APH at a load of 294 MW before overhoul of 0.9285 after overhoul of 0.933, at a load of 236 MW before overhoul of 0.929 and after overhoul increased to 0.937. So that the increase in effectiveness results in an increase in boiler efficiency. Where the boiler efficiency value before overhoul is 81.94% after overhoul of 82.73%. At load 236 before the overhoul of 82.14 after holding an overhooul of 82.75%.}
		}