5.1.3 The feed water to a boiler enters an economizer at 32°C and leaves at 120°C, being fed into the boiler at this temperature. The steam leaves the boiler 0.95 dry at 2.0MPA and passes through a super- heater where its temperature is raised to 250°C without change in pressure. The steam output is 8.2kg/kg of coal burned and the calorific value of the coal is 28MJ/kg. Take the specific heat capacity of superheated steam = 2.093kJ/kgK and that for the feed water = 4.18kJ/kgK. Determine the energy received per kilogram of water and steam in the following components and express your answers as percentages of the energy supplied by the coal: %3D 5.1.3.1 the economizer

5.1.3 The feed water to a boiler enters an economizer at 32°C and leaves at 120°C, being fed into the boiler at this temperature. The steam leaves the boiler 0.95 dry at 2.0MPA and passes through a super- heater where its temperature is raised to 250°C without change in pressure. The steam output is 8.2kg/kg of coal burned and the calorific value of the coal is 28MJ/kg. Take the specific heat capacity of superheated steam = 2.093kJ/kgK and that for the feed water = 4.18kJ/kgK. Determine the energy received per kilogram of water and steam in the following components and express your answers as percentages of the energy supplied by the coal: %3D 5.1.3.1 the economizer

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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