A power cycle operating between two reservoirs receives energy QH by heat transfer from a hot reservoir at TH= 2000 K and rejects energy Qc by heat transfer to a cold reservoir at Tc= 400 K. For each of the following cases determine whether the cycle operates reversibly, irreversibly, or oes not verify the second law of thermodynamics (make all necessary calculation for each case). a) QH= 1200 kJ and Wcycle = 1020 kJ b) QH= 1200 kJ and Qc = 240 kJ c) Wcycle = 1020 kJ and Qc = 600 kJ d) n = 40%

A power cycle operating between two reservoirs receives energy QH by heat transfer from a hot reservoir at TH= 2000 K and rejects energy Qc by heat transfer to a cold reservoir at Tc= 400 K. For each of the following cases determine whether the cycle operates reversibly, irreversibly, or oes not verify the second law of thermodynamics (make all necessary calculation for each case). a) QH= 1200 kJ and Wcycle = 1020 kJ b) QH= 1200 kJ and Qc = 240 kJ c) Wcycle = 1020 kJ and Qc = 600 kJ d) n = 40%

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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Q.2 A Carnot engine operates with ideal gas, using the Carnot cycle shown in the following Figure. Using the first law of thermodynamics and assume no change of internal energy, determine the thermal efficiency, the specific heat impute (q), and the work output (w) for each cycle of operation. (K=1.4 & R=0.287 KJ/Kg. K) T = 220 C 77 kPa T = 20 C 12 m'/kg
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