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(Solved): Solve using EES please. Problem 2 You are going to simulate power and torque output from a modifie ...



Solve using EES please. Problem 2 You are going to simulate power and torque output from a modified Cummins 6.7L Turbo Diesel engine. For this simulation you should use EES with the fluid of 'air_ha' to look up all the properties. You are going to analyze the engine with the following parameters: Bore

=4.21

in Stroke

=4.88

in Compression Ratio

=19:1

Cutoff Ratio

=1.75

Number of cylinders

=6

This is a four-stroke engine Engine Speed = 3200 RPM Note: You will need to solve for the mass of air in the cycle. To do this you will need to solve for the displaced volume, then use the compression ration to solve for TDC and BDC volumes. Tips: At each state you know the following: State 1: A pressure of 80 psia and temperature of

150\deg F

State 2: The process from 1-2 can be assumed to be isentropic, and you know the compression ratio State 3: The process from 2-3 can be considered isobaric, and you know the cutoff ratio State 4: The process from 3-4 can be assumed to be isentropic You should build an Array Table showing P, T, v,

u

,

h

, and

s

for States 1-4. Once that is done you should use those properties to calculate the following parameters: Net work for the cycle [Btu] (for one cylinder) Heat input for the cycle [Btu] (for one cylinder) Net thermal efficiency for the cycle [dimensionless, or %] Mean Effective Pressure [psia] Power output, W_dot [hp] (for all six cylinders)



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