Question
In: Mechanical Engineering
An ideal diesel engine has a compression ratio of 20 and uses air as the working...
An ideal diesel engine has a compression ratio of 20
and uses air as the working fluid. The state of air at
the beginning of the compression process is 95 kPa and 200C. If the
maximum temperature in the cycle
is not to exceed 2200 K,
Determine:
a) The thermal efficiency, and
b) The mean effective pressure, and
Assume constant specific heats for air at room temperature.
Solutions
samet mamat answered 2 years agoRelated Solutions
An ideal diesel engine has a compression ratio of 20 and uses air as the working...
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The internal energies at the beginning and the end of the
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Determine the specific internal energies before and after the...
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An ideal diesel engine uses air as the working fluid and operates with a thermal efficiency...
An ideal diesel engine uses air as the working fluid and operates
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A Diesel engine with a compression ratio of 16 has a cutoff ratio of 1.5. The...
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(a) Sketch the P-v diagram for this cycle.
(b) Calculate the heat transfer in and heat transfer out.
answer must be Qin = 657 J or 724 J or 866 J, Qout = 291 J or
296 J or
(c) Determine the thermal efficiency.
answer...
A Diesel engine with a compression ratio of 16 has a cutoff ratio of 1.5. The...
A Diesel engine with a compression ratio of 16 has a cutoff
ratio of 1.5. The state before polytropic compression (exponent
1.3) is 1700 cm3, 96 kPa and 22°C and there is isentropic
expansion.
(a) Sketch the P-v diagram for this cycle.
(b) Calculate the heat transfer in and heat transfer out.
(c) Determine the thermal efficiency.
(d) Calculate the mean effective pressure.
A diesel engine has a compression ratio of 19. The lowest pressure of the bike is...
A diesel engine has a compression ratio of 19. The lowest pressure of the bike is 250 kPa, the lowest
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(a) Draw a principle image of the engine. (1p)
(b) Draw a T-s and a P-v diagram with numbered points for the cycle (1p)
(c) Set up at least one table of given input for relevant points (1p)
The table can also be filled in with...
3. The compression ratio of the ideal air-powered diesel cycle is 14, while the cutting rate...
3. The compression ratio of the ideal air-powered diesel cycle
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b. Thermal efficiency
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A diesel engine has an inlet at 100 kPa, 310 K and a compression ratio of...
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At the beginning of compression of an ideal Diesel cycle the gas has a temperature and...
At the beginning of compression of an ideal Diesel cycle the gas
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16:1. The maximum temperature of the cycle is 14000C.
Determine, for the cycle,
the pressure and temperature at each of the cycle process
change points,
[8]
the work done/kg gas,
[4]
the thermal efficiency,
[4]
the work ratio,
[3]
the mean effective pressure,...
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