1.5 thermodynamics 39°EAs shown in the figure below, a reversible power cycle receives energy QH by heat transfer from a hot reservoir at TH and rejectsenergy Qc by heat transfer to a cold reservoir at Tc.Hot reservoirat THBoundary.ZeHCold reservoir cat Te(a) If TH=1600 K and Tc = 400 K, what is the thermal efficiency?(b) If TH= 500°C, Tc = 20°C, and Wcycle = 200 kJ, what are QH and Qc, each in.kJ?(c) If n = 50% and Tc = 40°F, what is TH, in °F?(d) If n = 40% and TH = 427°C, what is Tc, in °C?W cycle

Answer (a): Calculate the thermal efficiency. ηTh=1-TCTH =1-4001600ηTh=0.75ηTh=75%

As shown in the figure below, a reversible power cycle receives energy QH by heat transfer from a hot reservoir at TH and rejects energy Qc by heat transfer to a cold reservoir at Tc. Hot reservoir at TH Boundary- Zen Cold reservoir c at Te W (a) If TH= 1600 K and Tc = 400 K, what is the thermal efficiency? (b) If TH=500°C, Tc = 20°C, and Wcycle = 200 kJ, what are QH and Qc, each in kJ? (c) If n = 50% and Tc = 40°F, what is TH, in °F? (d) If n = 40% and TH = 427°C, what is Tc, in °C? cycle

As shown in the figure below, a reversible power cycle receives energy QH by heat transfer from a hot reservoir at TH and rejects energy Qc by heat transfer to a cold reservoir at Tc. Hot reservoir at TH Boundary- Zen Cold reservoir c at Te W (a) If TH= 1600 K and Tc = 400 K, what is the thermal efficiency? (b) If TH=500°C, Tc = 20°C, and Wcycle = 200 kJ, what are QH and Qc, each in kJ? (c) If n = 50% and Tc = 40°F, what is TH, in °F? (d) If n = 40% and TH = 427°C, what is Tc, in °C? cycle

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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