The following data was recorded during a test performed on a steam plant consisting of a Lancashire boiler, economiser and a superheater. Steam generated = 5,000 kg/hr at 14 bar pressure %3D Mass of coal burnt = 670 kg/hr Calorific value of coal = 29500 kJ/kg Temperature of feed water at entry and exit of economiser = 30°C and 130C respectively. Temperature of steam leaving the superheater = 320 °C. Dryness fraction of steam leaving the boiler = 0.97 Cp (superheated steam) = 2.3 kJ/kg-K %3D Cp (water) = 4.18 kJ/kg-K Calculate: (1) Factor of evaporation. (2) Overall efficiency of the plant.

The following data was recorded during a test performed on a steam plant consisting of a Lancashire boiler, economiser and a superheater. Steam generated = 5,000 kg/hr at 14 bar pressure %3D Mass of coal burnt = 670 kg/hr Calorific value of coal = 29500 kJ/kg Temperature of feed water at entry and exit of economiser = 30°C and 130C respectively. Temperature of steam leaving the superheater = 320 °C. Dryness fraction of steam leaving the boiler = 0.97 Cp (superheated steam) = 2.3 kJ/kg-K %3D Cp (water) = 4.18 kJ/kg-K Calculate: (1) Factor of evaporation. (2) Overall efficiency of the plant.

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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