2021me03f 2021me03f

16-05-2024
Engineering

Answered

Calculate the efficiency of (a) boiler, (b) economiser, and (c) whole plant having the following data: (a) Boiler: Mass of the feed water = 2060 kg/h Mass of the coal burnt = 227 kg/h Calorific value of coal = 30, 000 kJ/kg Enthalpy of steam produced = 2750 kJ/kg (b) Economiser: Inlet temperature of feed water = 15°C Exit temperature of feed water = 105°C Atmospheric air temperature = 18°C Temperature of flue gases entering = 370°C Mass of flue gases = 4075 kg/h Specific heat of flue gases = 1.3 kJ/kg.°C

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