Suppose that two ideal reversible heat engines are connected in series, such that the heatreleased by the first engine is used as the heat absorbed by the second engine, as shown in thefigure. Engine 1 operates between Th and Tm, and Engine 2 operates between Tm and Te, whereTh> Tm > Tc. Show that the net efficiency of this combination is given by & = 1Ththat this result means that two reversible engines operating "in series" are equivalent to onereversible heat engine operating between the hottest and coldest reservoirs.Te. NoteEDIT: Added the figure.ThImTcQhEngine 1QmQmEngine 2QcW₁W₂

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Suppose that two ideal reversible heat engines are connected in series, such that the heat released by the first engine is used as the heat absorbed by the second engine, as shown in the figure. Engine 1 operates between T₁ and Tm, and Engine 2 operates between Tm and To, where Tħ > Tm > Tċ. Show that the net efficiency of this combination is given by € = 1 – Note that this result means that two reversible engines operating "in series" are equivalent to one reversible heat engine operating between the hottest and coldest reservoirs. Te Th EDIT: Added the figure. Th Tm T E Qh Engine 1 Qm Qm Engine 2 lc W₁ W₂

Suppose that two ideal reversible heat engines are connected in series, such that the heat released by the first engine is used as the heat absorbed by the second engine, as shown in the figure. Engine 1 operates between T₁ and Tm, and Engine 2 operates between Tm and To, where Tħ > Tm > Tċ. Show that the net efficiency of this combination is given by € = 1 – Note that this result means that two reversible engines operating "in series" are equivalent to one reversible heat engine operating between the hottest and coldest reservoirs. Te Th EDIT: Added the figure. Th Tm T E Qh Engine 1 Qm Qm Engine 2 lc W₁ W₂

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter4: The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 4.3CYU: Check Your Understanding A Carnot engine operates between reservoirs at 400 and 30 . (a) What is...

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Question

Suppose that two ideal reversible heat engines are connected in series, such that the heat
released by the first engine is used as the heat absorbed by the second engine, as shown in the
figure. Engine 1 operates between Th and Tm, and Engine 2 operates between Tm and Te, where
Th> Tm > Tc. Show that the net efficiency of this combination is given by & = 1
Th
that this result means that two reversible engines operating "in series" are equivalent to one
reversible heat engine operating between the hottest and coldest reservoirs.
Te
. Note
EDIT: Added the figure.
Th
Im
Tc
Qh
Engine 1
Qm
Qm
Engine 2
Qc
W₁
W₂

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