Q4//a 1.173-MW steam power plant of overall efficiency of 32% utilize a steam generator that produces steam at 40bar and 300 °C at a rate of 1.128kg's. The temperature of the feed water is raised from 40 °C to 125 °C in the economizer and the ambient air is drawn to the boiler at a rate of 2.72 kg/s at 16 °C. The temperature of flue gases leaving the chimney is 150.4 °C and its specific heat is Cp-1.01 kJ/kg.K and the dryness fraction of steam collected in the steam drum is 0.95. The fuel used is of 33000kJ/kg heating value. 1. Determine the boiler efficiency and the equivalence evaporation. 2. Determine the thermal efficiency if the generator efficiency 0.95. 3. Draw the heat balance sheet (all in kJ/kg). Answ( 85.97%.12.57kg steam/kg ft.39.2%, E-3624.6 kJ/kg, E-22231.6 kJ/kgr, Eup-2514.34 kJ/kg E-3424.8 kJ/kg)

Q4//a 1.173-MW steam power plant of overall efficiency of 32% utilize a steam generator that produces steam at 40bar and 300 °C at a rate of 1.128kg's. The temperature of the feed water is raised from 40 °C to 125 °C in the economizer and the ambient air is drawn to the boiler at a rate of 2.72 kg/s at 16 °C. The temperature of flue gases leaving the chimney is 150.4 °C and its specific heat is Cp-1.01 kJ/kg.K and the dryness fraction of steam collected in the steam drum is 0.95. The fuel used is of 33000kJ/kg heating value. 1. Determine the boiler efficiency and the equivalence evaporation. 2. Determine the thermal efficiency if the generator efficiency 0.95. 3. Draw the heat balance sheet (all in kJ/kg). Answ( 85.97%.12.57kg steam/kg ft.39.2%, E-3624.6 kJ/kg, E-22231.6 kJ/kgr, Eup-2514.34 kJ/kg E-3424.8 kJ/kg)

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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