Boiler Energy Balance And Efficiency Calculation

IntroductionReference StandardsThe Direct Method TestingThe Indirect Method TestingIntroductionBoilerAclosed vessel or arrangement of vessels and tubes, together with a furnace or other heat source, in which steam or other vapour is generated from water to drive turbines or engines, supply heat, process certain materials.Boiler in power plantsThe energy balance in a boiler showing the fuel and air energy inputs and steam energy outputs from both SHand RHand the various losses.Factors affecting the performance of the boiler:1.Poor combustion.2.Heat transfer fouling.3.Poor operationand maintenance.4.Deteriorationof fuel quality and water quality also leads to poor performance of boiler.Efficiency testinghelps us to find out how far the boiler efficiency drifts away from the best efficiency. Any observed abnormal deviations could therefore be investigated to pinpoint the problem area for necessary corrective action.Hence it is necessary to find out the current level of efficiency for performance evaluation, which is a pre requisite for energy conservation action in industry.Purpose of The Performance Test1.To find out the boiler efficiency.2.To find out the Evaporation ratio.The purpose of the performance test is to determine actual performanceand efficiencyof the boiler and compare it with design values or norms. It is an indicator for tracking day-to-day and season-to-season variations in boiler efficiency and energy