Q711 11 - MW steam power plant of overall efficiency of 32% is operating using coal (33 MJ / kg) as a fuel. The plant utilizes a steam generator that produces steam at 40bar and 300 ° C at a rate of 10.5 kg / 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 16 kg / s at 20 ° C. The temperature of flue gases (Cp = 1 kJ / kg.K) leaving the chimney is 160 ° C and the dryness fraction of steam collected in the steam drum is 0.95. Determine the boiler efficiency and set the heat balance sheet (all in kJ / kgf). Answ (85.4%, 12.5kg steam / kg fuel, 39.6%, Ecco = 3597kJ / kg, Eevz = 22064.7kJ / kg, Esup = 2495.5 kJ / kg, Eexh = 2289.7 kJ / kge) Q7// 11-MW steam power plant of overall efficiency of 32% is operating using coal (33 MJ/kg) as a fuel.The plant utilizes a steam generator that produces steam at 40bar and 300 °C at a rate of 10.5 kg/s. Thetemperature of the feed water is raised from 40 °C to 125 °C in the economizer and the ambient air isdrawn to the boiler at a rate of 16 kg/s at 20 °C. The temperature of flue gases (Cp=1 kJ/kg.K) leavingthe chimney is 160 °C and the dryness fraction of steam collected in the steam drum is 0.95. Determinethe boiler efficiency and set the heat balance sheet(all in kJ/kgf). Answ( 85.4%,12.5kg steam/kg fuclh39.6% , Ecco=3597KJ/kgr, Eeva=22064.7kJ/kgr, Esup=2495.5 kJ/kgr, Eexh=2289.7 kJ/kgr)

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Answered: Q7// 11-MW steam power plant of overall…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

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Q711 11 - MW steam power plant of overall efficiency of 32% is operating using coal (33 MJ / kg) as a fuel. The plant utilizes a steam generator that produces steam at 40bar and 300 ° C at a rate of 10.5 kg / 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 16 kg / s at 20 ° C. The temperature of flue gases (Cp = 1 kJ / kg.K) leaving the chimney is 160 ° C and the dryness fraction of steam collected in the steam drum is 0.95. Determine the boiler efficiency and set the heat balance sheet (all in kJ / kgf). Answ (85.4%, 12.5kg steam / kg fuel, 39.6%, Ecco = 3597kJ / kg, Eevz = 22064.7kJ / kg, Esup = 2495.5 kJ / kg, Eexh = 2289.7 kJ / kge)

Q7// 11-MW steam power plant of overall efficiency of 32% is operating using coal (33 MJ/kg) as a fuel.
The plant utilizes a steam generator that produces steam at 40bar and 300 °C at a rate of 10.5 kg/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 16 kg/s at 20 °C. The temperature of flue gases (Cp=1 kJ/kg.K) leaving
the chimney is 160 °C and the dryness fraction of steam collected in the steam drum is 0.95. Determine
the boiler efficiency and set the heat balance sheet(all in kJ/kgf). Answ( 85.4%,12.5kg steam/kg fuclh
39.6% , Ecco=3597KJ/kgr, Eeva=22064.7kJ/kgr, Esup=2495.5 kJ/kgr, Eexh=2289.7 kJ/kgr)

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