An Otto cycle operates with an ideal monoatomic gas with γ=5/3. The cycle consists of two...
An Otto cycle operates with an ideal monoatomic gas with γ=5/3. The cycle consists of two isochoric and two adiabatic processes. The volume of the gas changes by a factor of 16 in the adiabatic processes. Calculate the efficiency of the cycle.
Homework Answers
Add Answer to:
An Otto cycle operates with an ideal monoatomic gas with γ=5/3.
The cycle consists of two...
The ideal Otto cycle, shown in the figure above, is the cycle used by gasoline engines...
The ideal Otto cycle, shown in the figure above, is the cycle used by gasoline engines to generate useful work. It consists of an adiabatic compression from step 1 to 2, followed by an isochoric increase in pressure from step 2 to 3, followed by an adiabatic expansion from 3 to 4, and finally an isochoric decrease in pressure from step 4 to 1.Consider an Otto cycle that works on a monoatomic ideal gas (γ= 5/3,cV= 3R/2), initially at a...
An ideal gas with Cv = 5/2R, and γ = 1.4 starts at a volume of...
An ideal gas with Cv = 5/2R, and γ = 1.4 starts at a volume of 2.0m^3, a pressure of 3.0 × 10^5Pa, and a temperature of 300K. The gas undergoes an isochoric cooling where its pressure decreases to 1.0 × 10^5Pa. It then undergoes an adiabatic contraction until its pressure returns to 3.0×10^5Pa. It finally undergoes an isobaric heating until it returns to a volume of 2.0m^3. What is the efficiency of this heat engine?
A Carnot engine operates us ing 1.0 mol e of monoatomic ideal gas as a working...
A Carnot engine operates us ing 1.0 mol e of monoatomic ideal gas as a working s ubstance. In t he first step, the gas is place d in thermal contact with a heat reservoir and expands isothermally to 3 .0 times its initial volume. (a) If the internal energy o f the gas after this step is 6.25 k J , calculate the temperature of the heat reservoir ( T h ) . (b) C alculate the heat absorbed...
Consider a monoatomic ideal gas undergoing the following cycle: starting point (a), pressure increases at a...
Consider a monoatomic ideal gas undergoing the following cycle: starting point (a), pressure increases at a constant volume reaching point (b), then the gas expands adiabatically until pressure reaches the initial value (point c), and then the gas is compressed at a constant pressure until the volume reaches the initial value back to point (a). The amount of gas is 1 mole. Monoatomic gas means it has only 3 degrees of freedom and the adiabatic constant gamma is 5/3. Sketch...
The work done by two moles of a monatomic ideal gas (γ = 5/3) in expanding...
The work done by two moles of a monatomic ideal gas (γ = 5/3) in expanding adiabatically is 920 J. The initial temperature and volume of the gas are 365 K and 0.110 m³. What is the final volume of the gas? [Hint: For an adiabatic process => T1V1γ-1 = T2V2γ-1]
The work done by two moles of a monatomic ideal gas (γ = 5/3) in expanding...
The work done by two moles of a monatomic ideal gas (γ = 5/3) in expanding adiabatically is 920 J. The initial temperature and volume of the gas are 390 K and 0.120 m³. What is the final volume of the gas? [Hint: For an adiabatic process => T1V1γ-1 = T2V2γ-1]
Consider the following figure Otto cycle Heating at constant volume (fuel combustion) Он 3) Adiab...
Consider the following figure Otto cycle Heating at constant volume (fuel combustion) Он 3) Adiabatic expansion power stroke ed 0 rV Adiabatic compression (compression stroke) Cooling at constant volume (cooling of exhaust gases) (a) For the Otto cycle shown in the figure above, calculate the changes in entropy of the gas in each of the constant-volume processes b 无, and Td and the number of moles n and the heat capacity Cv of the gas. (Use any variable or symbol...
Dmole of an ideal gas follows the cycle shown in the figure. 1-2 is isochoric process,...
Dmole of an ideal gas follows the cycle shown in the figure. 1-2 is isochoric process, 2-3 is adiabatic process and 3-1 is isobaric process. Vi, Pi are given; V2-2V, P2- P/3. Determine (according to P1, V1) a) Adiabatic coefficient y and molar specific heats Cv and Cp (from the process 2-3) ? b) The heats from 1-2 and 3-1 processes? c) The thermal efficiency of the engine operating with this cycle. PI P2 V2 VI ..
Dmole of an...
During the expansion process of the ideal Otto cycle, the gas is a mixture whose volumetric...
During the expansion process of the ideal Otto cycle, the gas is a mixture whose volumetric composition is 28 percent nitrogen, 10 percent oxygen, 25 percent water, and 37 percent carbon dioxide. Calculate the thermal efficiency of this cycle when the air at the beginning of the compression is at 12 psia and 55°F, the compression ratio is 7, and the maximum cycle temperature is 1500°F. Model the heat-addition and heat-rejection processes using constant gas properties that are the average...
(12 points) An ideal Otto cycle operates with a compression ratio of 10. At the beginning...
(12 points) An ideal Otto cycle operates with a compression ratio of 10. At the beginning of the compression process, the air is at 101 kPa and 27°C. During the constant volume heat addition process, 790 kJ/kg of heat is transferred to the air. Accounting for variable specific heats with temperature, determine: the maximum temperature during the cycle 1266.862 °C the maximum pressure during the cycle 6239.424 kPa the specific net work output 475.495481 kJ/kg the mean effective pressure (MEP)...
Consider the following figure Otto cycle Heating at constant volume (fuel combustion) Он 3) Adiabatic expansion power stroke ed 0 rV Adiabatic compression (compression stroke) Cooling at constant volume (cooling of exhaust gases) (a) For the Otto cycle shown in the figure above, calculate the changes in entropy of the gas in each of the constant-volume processes b 无, and Td and the number of moles n and the heat capacity Cv of the gas. (Use any variable or symbol...
Dmole of an ideal gas follows the cycle shown in the figure. 1-2 is isochoric process, 2-3 is adiabatic process and 3-1 is isobaric process. Vi, Pi are given; V2-2V, P2- P/3. Determine (according to P1, V1) a) Adiabatic coefficient y and molar specific heats Cv and Cp (from the process 2-3) ? b) The heats from 1-2 and 3-1 processes? c) The thermal efficiency of the engine operating with this cycle. PI P2 V2 VI ..
Dmole of an...
(12 points) An ideal Otto cycle operates with a compression ratio of 10. At the beginning of the compression process, the air is at 101 kPa and 27°C. During the constant volume heat addition process, 790 kJ/kg of heat is transferred to the air. Accounting for variable specific heats with temperature, determine: the maximum temperature during the cycle 1266.862 °C the maximum pressure during the cycle 6239.424 kPa the specific net work output 475.495481 kJ/kg the mean effective pressure (MEP)...
Most questions answered within 3 hours.
-
If the Stratosphere elevator in Las Vegas is 500 m above the
ground when the cables...
asked 12 seconds from now -
identify at least one other characteristics of the soils/sand
that may have impacted the growth of...
asked 6 minutes ago -
True or False
The following statements refer to The Web of Belief
10. An explanation of...
asked 7 minutes ago -
15)___________ A study was conducted to
test the effectiveness of aspirin on reducing
asked 15 minutes ago -
How fast must a centrifuge spin if a particle 8 cm from the axis
of rotation...
asked 16 minutes ago -
Which of the following is characteristic of a single exposure
common vehicle outbreak?
a. Wide range...
asked 18 minutes ago -
You are a member of an alpine rescue team and must get a box of
supplies,...
asked 21 minutes ago -
Where the conservation of biodiversity is concerned, can I be
assisted with these questions:
1. What...
asked 21 minutes ago -
A 79-Ω loudspeaker, a 8.0-Ω loudspeaker, and a 3.7-Ω loudspeaker
are connected in parallel across the...
asked 52 minutes ago -
If X has a normal distribution with mean µ =
12 and variance σ2 = 9,...
asked 1 hour ago -
An example of an operational taxonomic unit
(OTU) is
a. Multiple sequence alignment.
b. Protein sequence....
asked 1 hour ago -
Electrons flow through a 2.7-mm-diameter aluminum wire at
2.5×10−4 m/s .
How many electrons move through...
asked 1 hour ago