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 2 at TH Boundary R (a) If TH=600 K and Tc = 400 K, what is the thermal efficiency? H Cold reservoir c at To Wcycle (b) If TH= 500°C, Tc = 20°C, and Wcycle = 200 kJ, what are QH and Qc, each in kJ? (c) If n = 70% and Tc= 40°F, what is TH, in °F? (d) If n = 40% and TH = 727°C, what is Tc, in °C?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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5.1

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.
R
H
Cold reservoir c
at Te
Wcycle
(a) If TH=600 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 = 70% and Tc = 40°F, what is TH, in °F?
(d) If n = 40% and TH = 727°C, what is Tc, in °C?
Transcribed Image Text: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. R H Cold reservoir c at Te Wcycle (a) If TH=600 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 = 70% and Tc = 40°F, what is TH, in °F? (d) If n = 40% and TH = 727°C, what is Tc, in °C?
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