Noble International Journal of Scientific Research ISSN(e): 2521-0246 ISSN(p): 2523-0573 Vol. 01, No. 10, pp: 104-111, 2017 Published by Noble Academic Publisher URL: http://napublisher.org/?ic=journals&id=2 Open Access 104 Energy and Exergy Analyses of Boiler and its Parts of Lakhra Coal Power Plant (FBC) Jamshoro Jawed Ahmed Jamali a* , Abdul Ghafoor Memon b , Khanji Harijan c , Zeshan Abbas d , Aamir Khuwaja e a*,b,c,d MUET, Engineering Department, Jamshoro, Pakistan e MUET, Mechanical Department, Jamshoro, Pakistan Abstract: The energy and exergy analyses especially of boiler of 50 MW unit of lakhra power is demonstrated through EES software in this research paper because of its consistent, persistence and recurring failure even its minor failure renders whole power plant to remain shut down for indefinite period of time till its rectification, repairing, maintenance and replacing. However, the chief parts of boiler in the plant are fluidized bed combustion chamber, super heater, economizer and air preheater which are aimed at increasing overall efficiency and optimizing performance by proper utilizing supposed-to-be wastage like flue gas and its high temperature heat and energy potential. Through energy analysis the energy loss along with the first law efficiency of the parts have been computed and calculated which shows quantitative loss while for qualitative loss the exergy method has been employed to figure out second law efficiency of components of boiler, generation of entropy, irreversibility and destruction. Through the investigation it was witnessed that the most destructive parts of boiler is the combustor where uncontrolled chemical reactions and maximum loss and destruction, due to heat loss and radiation losses, take place where energy loss is 90% and exergy destruction is 55% succeeded by super heater where 5% energy loss occurs and 36% exergy destruction happens. The highest optimized part of the boiler is air preheater that has 78% and 79% energy and exergy efficiency respectively. Keywords: Energy, Exergy, Boiler, Combustor, Energy Loss, Exergy Destruction. 1. Introduction Generally, the world’s electricity demands are met by fossil fuels. Although much progress has been done on inexhaustible sources of energy like power of wind and solar power to name a few, still the dominance of fossil fuels is anticipated to prolong for many decades to come [1]. In Pakistan, by source electricity generation comes as Oil 35.2%, Gas 29.0%, Hydel 29.9% and Nuclear and imported 5.8% [2]. Power production Industry of Pakistan chiefly comprises of thermal and hydropower plants with fixed capacity of 12442 and 6481 MW respectively [2]. Moreover, these thermal power plants are operated with very low efficiencies due to many technical and management inefficiencies. For such reasons, the electricity supply and demand gap is get widening, which is leading the country’s social and economic growth near to standstill. Recently, Pakistan is experiencing worst energy crisis in history. The gap between electricity demand and supply keeps widening; a maximum shortfall of higher than 6000 MW was recorded in year 2010 [3]. The scenario has yet to be better as country witnesses currently massive protests. Many businesses have to be shut off owing to severe power crisis. Many factors contribute to the acute shortage of dwindling of energy in Pakistan involving absence of Integrated Energy Planning and Demand Forecasting and nonappearance of central and concentrated entity answerable for the sector of energy, unevenness energy mix with greater interdependence on gas and oil and their exorbitant import. Nonutilization of enormous local coal of Thar and hydro proficiency, dearth of efficacious project structuring, planning and implementation of known and feasible projects are leading causes of crisis of power. Country has tremendous hydro & coal energy potential (185 billion tones) [3] that could be put into action in order to overcome the electricity crises. Global generation of electricity is offered 40% through coal. On the other hand, regardless of having massive stockpile of lignite, Pakistan brings about only 0.1% electricity from Lakhra FBC power plant. The performance assessment of power plants is