The compression ratio of an Otto cycle as shown in Figure 21.12 is V/V = 8.00. At the beginning A of the com- pression process, 500 cm3 of gas is at 100 kPa and 20.0°C. At the beginning of the adiabatic expansion, the temperature is Tc A 750°C. Model the working fluid as an ideal gas with y = 1.40. (a) Fill in this table to follow the states of the gas: T (K) P (kPa) V (cm³) A 293 100 500 В C 1 023 D (b) Fill in this table to follow the processes: W ΔΕ, int А— В В — С C→D D→ A АВCDA (c) Identify the energy input |Q,l, (d) the energy exhaust |Q,l, and (e) the net output work W. thermal efficiency. (g) Find the number of crankshaft rev- olutions per minute required for a one-cylinder engine to have an output power of 1.00 kW = 1.34 hp. Note: The ther- modynamic cycle involves four piston strokes. (f) Calculate the eng TA \Tc Adiabatic C processes B D V V2 Vị Figure 21.12 PV diagram for the Otto cycle, which approximately represents the processes occur- ring in an internal combustion engine.

The compression ratio of an Otto cycle as shown in Figure 21.12 is V/V = 8.00. At the beginning A of the com- pression process, 500 cm3 of gas is at 100 kPa and 20.0°C. At the beginning of the adiabatic expansion, the temperature is Tc A 750°C. Model the working fluid as an ideal gas with y = 1.40. (a) Fill in this table to follow the states of the gas: T (K) P (kPa) V (cm³) A 293 100 500 В C 1 023 D (b) Fill in this table to follow the processes: W ΔΕ, int А— В В — С C→D D→ A АВCDA (c) Identify the energy input |Q,l, (d) the energy exhaust |Q,l, and (e) the net output work W. thermal efficiency. (g) Find the number of crankshaft rev- olutions per minute required for a one-cylinder engine to have an output power of 1.00 kW = 1.34 hp. Note: The ther- modynamic cycle involves four piston strokes. (f) Calculate the eng TA \Tc Adiabatic C processes B D V V2 Vị Figure 21.12 PV diagram for the Otto cycle, which approximately represents the processes occur- ring in an internal combustion engine.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

The compression ratio of an Otto cycle as shown in
Figure 21.12 is V/V = 8.00. At the beginning A of the com-
pression process, 500 cm3 of gas is at 100 kPa and 20.0°C. At
the beginning of the adiabatic expansion, the temperature
is Tc
A
750°C. Model the working fluid as an ideal gas with
y = 1.40. (a) Fill in this table to follow the states of the gas:
T (K)
P (kPa)
V (cm³)
A
293
100
500
В
C
1 023
D
(b) Fill in this table to follow the processes:
W
ΔΕ,
int
А— В
В — С
C→D
D→ A
АВCDA
(c) Identify the energy input |Q,l, (d) the energy exhaust
|Q,l, and (e) the net output work W.
thermal efficiency. (g) Find the number of crankshaft rev-
olutions per minute required for a one-cylinder engine to
have an output power of 1.00 kW = 1.34 hp. Note: The ther-
modynamic cycle involves four piston strokes.
(f) Calculate the
eng

TA \Tc
Adiabatic
C
processes
B
D
V
V2
Vị
Figure 21.12 PV diagram for the
Otto cycle, which approximately
represents the processes occur-
ring in an internal combustion
engine.

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