Q//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.

Q//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.

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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