Question
In: Mechanical Engineering
a)State the ideal cycle most appropriate to the actual operations undergone the modem Diesel engine ....
a)State the ideal cycle most appropriate to the actual
operations undergone the modem Diesel engine .
b)give reasons why the actual cycle is made approximate to the
ideal heat exchange process.
c) state how the combustion process in the actual cycle is
made approximate to the ideal heat exchange process.
Solutions
samet mamat answered 2 years agoRelated Solutions
A Diesel cycle engine is analyzed using the air standard method. Given the conditions at state...
A Diesel cycle engine is analyzed using the air standard
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cutoff ratio (rc) determine the efficiency and other values listed
below.
Note: The gas constant for air is R=0.287
kJ/kg-K.
Given Values
T1 (K) = 338
P1 (kPa) = 130
r = 14.5
rc = 1.25
a) Determine the specific internal energy (kJ/kg) at state
1.
b) Determine the relative specific volume at state 1.
c) Determine the relative...
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Determine, for the cycle,
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[8]
the work done/kg gas,
[4]
the thermal efficiency,
[4]
the work ratio,
[3]
the mean effective pressure,...
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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Qin=120 kW. The temperature at the beginning and the end of the
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K. Assume constant specific heats (Cp and Cv). The air properties
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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.
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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
compressor process is 100 kpa and 27 C. The maximum temperature in
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Determine the following:
The internal energies at the beginning and the end of the
compression
The enthalpy before and end of the combustion
The internal energy before and end of the...
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kPa and 17oC, and in the combustion process 640 kJ/kg of heat is
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The compression ratio of an ideal air-powered Diesel cycle is 20. At the beginning of the...
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the air is 100 kPa, the temperature is 20 ° C, and the highest
temperature of the cycle is required not to exceed 2250 K. Show the
cycle in the P-v diagram. Accept specific temperatures constant at
room temperature.
k=1.4 CP=1.005 kJ/kgK CV=0.718 kJ/kgK R=0.287 kJ/kgK
a) Calculate the temperatures entering and leaving the cycle,
the thermal efficiency of...
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130 kPa. light diesel fuel is used at an equivalence ratio of 0.8
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pressure at each state of the cycle (kpa)
cutoff ratio
indicated thermal efficiency (%)
heat lost in exhaust (KJ/Kg)
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