Question
In: Mechanical Engineering
State 1 of an Air-Standard Otto cycle (prior to compression) has T1= 290 K, p1= 0.911...
State 1 of an Air-Standard Otto cycle (prior to compression) has T1= 290 K, p1= 0.911 bar and V1= 5.5 litres.
If the air is compressed with volumetric compression ratio rv= 7.6, determine System mass m，Specific internal energy of the compressed state u2 and Input work W
Solutions
Expert Solution
Solution :- The given problem has been solved using the standard formulas and principles used in the subject of Thermodynamics. The P-V diagram of the Otto cycle has been drawn to understand the given processes.
samet mamat answered 1 year agoRelated Solutions
At the beginning of the compression process of an air standard Otto cycle, p1 = 1...
At the beginning of the compression process of an air standard
Otto cycle, p1 = 1 bar, T1
= 300 K. The maximum temperature in the cycle is 2250 K and
the compression ratio is 9.8. The engine has 4 cylinders and an
engine displacement of Vd = 2.0 L. Determine
per cylinder:
a) the volume at state 1.
b) the air mass per cycle.
c) the heat addition per cycle, in kJ.
d) the heat rejection per cycle, in
kJ.
e) the net work...
At the beginning of the compression process of an air standard Otto cycle, p1 = 1...
At the beginning of the compression process of an air standard
Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the
cycle is 2250 K and the compression ratio is 9.8. The engine has 4
cylinders and an engine displacement of Vd = 2.6 L. Determine per
cylinder:
a) the volume at state 1. (IN LITERS) I have tried 2.8L 0.945 L
and 0.789 L but i keep getting it wrong.
b) the air mass...
At the beginning of the compression process of an air standard Otto cycle, p1 = 1...
At the beginning of the compression process of an air standard
Otto cycle, p1 = 1 bar, T1
= 300 K. The maximum temperature in the cycle is 2250 K and
the compression ratio is 9.8. The engine has 4 cylinders and an
engine displacement of Vd = 2.7 L. Determine
per cylinder:
c) the heat addition per cycle, in
kJ.
d) the heat rejection per cycle, in
kJ.
e) the net work per cycle, in kJ.
f) the thermal efficiency.
g) the mean effective...
At the beginning of the compression process of an air standard Otto cycle, p1 = 1...
At the beginning of the compression process of an air standard
Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the
cycle is 2250 K and the compression ratio is 9.8. The engine has 4
cylinders and an engine displacement of Vd = 2.7 L. Determine per
cylinder: a) the volume at state 1. b) the air mass per cycle. c)
the heat addition per cycle, in kJ. d) the heat rejection per
cycle, in...
At the beginning of the compression process of an air standard Otto cycle, p1 = 1...
At the beginning of the compression process of an air standard
Otto cycle, p1 = 1 bar, T1
= 300 K. The maximum temperature in the cycle is 2250 K and
the compression ratio is 9.8. The engine has 4 cylinders and an
engine displacement of Vd = 2.2 L. Determine
per cylinder:
c) the heat addition per cycle, in
kJ.
d) the heat rejection per cycle, in
kJ.
e) the net work per cycle, in kJ.
f) the thermal efficiency.
g) the mean effective...
At the beginning of the compression process of an air-standard Otto cycle, p1 = 1 bar...
At the beginning of the compression process of an air-standard
Otto cycle, p1 = 1 bar and T1 = 300 K. The compression ratio is 3.5
and the heat addition per unit mass of air is 1400 kJ/kg.
Determine: (a) the maximum temperature of the cycle, in K. (b) the
net work, in kJ/kg. (c) the percent thermal efficiency of the
cycle. (d) the mean effective pressure, in kPa.
At the beginning of the compression process of an air-standard Otto cycle, p1 = 1 bar,...
At the beginning of the compression process of an air-standard
Otto cycle, p1 = 1 bar, T1 = 290 K, V1 = 400 cm3. The maximum
temperature in the cycle is 2200 K and the compression ratio is 8.
Determine (a) the heat addition, in kJ. kJ (b) the net work, in kJ.
kJ (c) the thermal efficiency. % (d) the mean effective pressure,
in bar. bar (e) Develop a full accounting of the exergy transferred
to the air during...
At the beginning of the compression process of an air-standard Otto cycle, p1 = 1 bar...
At the beginning of the compression process of an air-standard
Otto cycle, p1 = 1 bar and
T1 = 300 K. The compression ratio is 8.5 and
the heat addition per unit mass of air is 1200 kJ/kg.
Determine:
(a) the maximum temperature of the cycle, in K.
(b) the net work, in kJ/kg.
(c) the percent thermal efficiency of the cycle.
(d) the mean effective pressure, in kPa.
The compression ratio of an air-standard Otto cycle is 9.5. Prior to the isentropic compression process,...
The compression ratio of an air-standard Otto cycle is 9.5.
Prior to the isentropic compression process, the air is at 100 kPa,
35°C and 600 cm3 . The temperature at the end of the isentropic
expansion process is 800 K. Using specific heat values at room
temperature (25°C), determine
(a) the highest temperature and pressure in the cycle
(b) the amount of heat transferred in during the cycle (kJ)
(c) the thermal efficiency
(d) the mean effective pressure
Part (a)...
The state at the beginning of compression of an air-standard Diesel cycle is fixed by p1...
The state at the beginning of compression of an air-standard
Diesel cycle is fixed by p1 = 100 kPa and
T1 = 310 K. The compression ratio is 18 and the
cutoff ratio is 1.5.
Determine:
(a) the maximum temperature, in K.
(b) the pressure at the end of the expansion, in kPa.
(c) the net work per unit mass of air, in kJ/kg.
(d) the percent thermal efficiency.
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