4.2 A simple open-cycle gas turbine power plant works between the pressures of 1 bar and 6 bar and temperatures of 300 K and 1023 K. The calorific value of fuel used is 44 MJ/kg. If the mechanical efficiency and the generator efficiency are 95% and 96% respectively and the air flow rate is 20 kg/s, (a) Draw the line (schematic) and T-s diagrams of the cycle. (2) (b) Calculate: (i) the air-to-fuel ratio, (5) (ii) the power output, and (5) (iii) the thermal efficiency. (2) Take cp = 1.01 kJ/kgK and y = 1.4 for the compression process and cp = 1.15 kJ/kgK and y = 1.333 for the expansion process.
4.2 A simple open-cycle gas turbine power plant works between the pressures of 1 bar and 6 bar and temperatures of 300 K and 1023 K. The calorific value of fuel used is 44 MJ/kg. If the mechanical efficiency and the generator efficiency are 95% and 96% respectively and the air flow rate is 20 kg/s, (a) Draw the line (schematic) and T-s diagrams of the cycle. (2) (b) Calculate: (i) the air-to-fuel ratio, (5) (ii) the power output, and (5) (iii) the thermal efficiency. (2) Take cp = 1.01 kJ/kgK and y = 1.4 for the compression process and cp = 1.15 kJ/kgK and y = 1.333 for the expansion process.
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
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:4.2
A simple open-cycle gas turbine power plant works between the pressures of 1
bar and 6 bar and temperatures of 300 K and 1023 K. The calorific value of fuel
used is 44 MJ/kg. If the mechanical efficiency and the generator efficiency are
95% and 96% respectively and the air flow rate is 20 kg/s,
(a) Draw the line (schematic) and T-s diagrams of the cycle.
(2)
(b) Calculate:
(i) the air-to-fuel ratio,
(5)
(ii) the power output, and
(5)
(iii) the thermal efficiency.
(2)
Take cp = 1.01 kJ/kgK and y = 1.4 for the compression process and cp = 1.15 kJ/kgK
and y = 1.333 for the expansion process.
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