Question
In: Mechanical Engineering
A Dual cycle engine is analyzed using the air standard method. Given the conditions at state...
A Dual cycle engine is analyzed using the air standard method. Given the conditions at state 1, compression ratio (r), pressure ratio (rp), and 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) = 334
P1 (kPa) = 115
r = 11.5
rp = 1.34
rc = 1.14
a) Determine the specific internal energy (kJ/kg) at state 1.
b) Determine the relative specific volume at state 1.
c) Determine the relative specific volume at state 2.
d) Determine the temperature (K) at state 2.
e) Determine the pressure (kPa) at state 2.
f) Determine the specific internal energy (kJ/kg) at state 2.
g) Determine the temperature (K) at state 3.
h) Determine the pressure (kPa) at state 3.
i) Determine the specific internal energy (kJ/kg) at state 3.
j) Determine the specific enthalpy (kJ/kg) at state 3.
k) Determine the temperature (K) at state 4.
l) Determine the pressure (kPa) at state 4.
m) Determine the specific enthalpy (kJ/kg) at state 4.
n) Determine the relative specific volume at state 4.
o) Determine the relative specific volume at state 5.
p) Determine the temperature (K) at state 5.
q) Determine the pressure (kPa) at state 5.
r) Determine the specific internal energy (kJ/kg) at state 5.
s) Determine the net-work per cycle (kJ/kg) of the engine.
t) Determine the heat addition per cycle (kJ/kg) of the engine.
u) Determine the efficiency (%) of the engine.
Solutions
samet mamat answered 11 hours agoRelated Solutions
A Dual cycle engine is analyzed using the cold air standard method. Given the conditions at...
A Dual cycle engine is analyzed using the cold air
standard method. Given the conditions at state 1, compression ratio
(r), and cutoff ratio (rc) determine the efficiency and other
values listed below.
Note: The specific heat ratio and gas constant for air
are given as k=1.4 and R=0.287 kJ/kg-K respectively.
Given Values
T1 (K) = 316
P1 (kPa) = 170
r = 18
rp = 1.44
rc = 1.22
a) Determine the specific internal energy (kJ/kg) at state
1....
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
method. Given the conditions at state 1, compression ratio (r), and
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
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95 kPa, and T1 = 290 K. The heat addition is 4.5 kJ, with one
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An air-standard dual cycle has a compression ratio of 9.1 and displacement of Vd = 2.2...
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95 kPa, and T1 = 290 K. The heat addition is 5 kJ, with one quarter
added at constant volume and the rest added at constant pressure.
Determine: a) each of the unknown temperatures at the various
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(a) the heat addition to the cycle, in Btu.
(b) the net work of the cycle, in Btu.
(c) the percent thermal efficiency.
(d) the mean effective pressure, in lbf/in.2
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