! Required information The PV diagram shown is for a heat engine that uses 1.030 mol of a diatomic ideal gas as its working substance. In the constant-temperature processes A and C, the gas is in contact with reservoirs at temperatures 373 K and 273 K, respectively. In constant-volume process B, the gas temperature decreases as heat flows into the cold reservoir. In constant- volume process D, the gas temperature increases as heat flows from the hot reservoir. Pressure (kPa) 160 150 A 140 D 373 K 130 120 110 100 273 K C 90 80 B 0.019 0.02 0.021 0.022 0.023 0.024 0.025 0.026 Volume (m³) To compare the efficiency of the heat engine to that of an ideal engine, what is the ratio of the efficiency of an ideal engine using the same reservoirs to that of the heat engine, if the heat input per cycle is 2854 J?
! Required information The PV diagram shown is for a heat engine that uses 1.030 mol of a diatomic ideal gas as its working substance. In the constant-temperature processes A and C, the gas is in contact with reservoirs at temperatures 373 K and 273 K, respectively. In constant-volume process B, the gas temperature decreases as heat flows into the cold reservoir. In constant- volume process D, the gas temperature increases as heat flows from the hot reservoir. Pressure (kPa) 160 150 A 140 D 373 K 130 120 110 100 273 K C 90 80 B 0.019 0.02 0.021 0.022 0.023 0.024 0.025 0.026 Volume (m³) To compare the efficiency of the heat engine to that of an ideal engine, what is the ratio of the efficiency of an ideal engine using the same reservoirs to that of the heat engine, if the heat input per cycle is 2854 J?
Chapter3: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 11CQ: It is unlikely that a process can be isothermal unless it is a very slow process. Explain why. Is...
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Required information
The PV diagram shown is for a heat
engine that uses 1.030 mol of a diatomic
ideal gas as its working substance. In the
constant-temperature processes A and C,
the gas is in contact with reservoirs at
temperatures 373 K and 273 K,
respectively. In constant-volume process
B, the gas temperature decreases as heat
flows into the cold reservoir. In constant-
volume process D, the gas temperature
increases as heat flows from the hot
reservoir.
Pressure (kPa)
160
150
A
140
D
373 K
130
120
110
100
273 K
C
90
80
B
0.019 0.02 0.021 0.022 0.023 0.024 0.025 0.026
Volume (m³)
To compare the efficiency of the heat
engine to that of an ideal engine, what is
the ratio of the efficiency of an ideal
engine using the same reservoirs to that
of the heat engine, if the heat input per
cycle is 2854 J?
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