A turbine receives steam at 100 bar, 600ºC and exhausts it at 2 bar from which it is used for process heating; AP and AK are negligible (a) For ideal Rankine engine, determine work (kJ/kg) steam rate (kg/kWh), thermal efficiency and mean effective pressure. (b) For the actual engine, the break efficiency is 84%; the driven generator efficiency is 93% and the rated output of the generator is 30 MW. Estimate the enthalpy he and quality (or superheat) of the exhaust. Compute the combined work (kJ/kg), combined heat rate (kJ/kWh), and the total steam flow for the rated power (kg/hr). P₁ = 100 bar P₂=2 bar ha-505 kJ/kg T₁ - 600°C T₂-120.2°C

A turbine receives steam at 100 bar, 600ºC and exhausts it at 2 bar from which it is used for process heating; AP and AK are negligible (a) For ideal Rankine engine, determine work (kJ/kg) steam rate (kg/kWh), thermal efficiency and mean effective pressure. (b) For the actual engine, the break efficiency is 84%; the driven generator efficiency is 93% and the rated output of the generator is 30 MW. Estimate the enthalpy he and quality (or superheat) of the exhaust. Compute the combined work (kJ/kg), combined heat rate (kJ/kWh), and the total steam flow for the rated power (kg/hr). P₁ = 100 bar P₂=2 bar ha-505 kJ/kg T₁ - 600°C T₂-120.2°C

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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Question

A turbine receives steam at 100 bar, 600°C and exhausts it at 2 bar from which it is used for process heating;
AP and AK are negligible (a) For ideal Rankine engine, determine work (kJ/kg) steam rate (kg/kWh),
thermal efficiency and mean effective pressure. (b) For the actual engine, the break efficiency is 84%; the
driven generator efficiency is 93% and the rated output of the generator is 30 MW. Estimate the enthalpy
he and quality (or superheat) of the exhaust. Compute the combined work (kJ/kg), combined heat rate
(kJ/kWh), and the total steam flow for the rated power (kg/hr).
P₁ = 100 bar P₂ = 2 bar
h = 505 kJ/kg
T₁ = 600°C
T₂ = 120.2°C

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