In the Rankine cycle with a feedwater heater as shown in the figure, the condensing temperature T1 is 25oC. The superheat temperature T3 is 370oC and the vaporization pressure P3 is 32 bar. Enough steam is bled from Turbine 1 at 7 bar (P2’) to heat the feedwater 2’ to a saturated liquid 2’’. Determine the thermal efficiency of this reversible cycle and compare it to a Carnot cycle operating between the same two temperature extremes. Show the cycle in a T-s diagram. Also compute the net work output per kilogram of steam.
In the Rankine cycle with a feedwater heater as shown in the figure, the condensing temperature T1 is 25oC. The superheat temperature T3 is 370oC and the vaporization pressure P3 is 32 bar. Enough steam is bled from Turbine 1 at 7 bar (P2’) to heat the feedwater 2’ to a saturated liquid 2’’. Determine the thermal efficiency of this reversible cycle and compare it to a Carnot cycle operating between the same two temperature extremes. Show the cycle in a T-s diagram. Also compute the net work output per kilogram of steam.
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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In the Rankine cycle with a feedwater heater as shown in the figure, the condensing temperature T1 is 25oC. The superheat temperature T3 is 370oC and the vaporization pressure P3 is 32 bar. Enough steam is bled from Turbine 1 at 7 bar (P2’) to heat the feedwater 2’ to a saturated liquid 2’’. Determine the thermal efficiency of this reversible cycle and compare it to a Carnot cycle operating between the same two temperature extremes. Show the cycle in a T-s diagram. Also compute the net work output per kilogram of steam.
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