Question
In: Mechanical Engineering
In an air standard diesel cycle, the conditions of the air at the start of the...
In an air standard diesel cycle, the conditions of the air at the start of the compression stroke are 2 bar and 30℃. The pressure rises to 30bar after compression, and through combustion, 1200 kJ of energy is added per kg air. Calculate
- Compression ratio
- Cutoff ratio
- Mean effective pressure
- Temperature and pressure at the end of each process
- work done per kg air
- Thermal efficiency of the cycle
Solutions
samet mamat answered 3 months agoRelated Solutions
Question 1) In an air standard diesel cycle, the conditions of the air at the start...
Question 1) In an air standard diesel cycle,
the conditions of the air at the start of the compression stroke
are 2 bar and 30℃. The pressure rises to 30bar after compression,
and through combustion, 1200 kJ of energy is added per kg air.
Calculate
Compression ratio
Cutoff ratio
Mean effective pressure
Temperature and pressure at the end of each process
work done per kg air
Thermal efficiency of the cycle
3 Question 3: In an air standard Diesel cycle with compression ratio 14, the conditions of...
3 Question 3: In an air standard Diesel cycle with compression
ratio 14, the conditions of the air at the start of compression
stroke are 1 bar and 300 K. After addition of heat at constant
pressure, the temperature rises to 2774 K. Determine: a) the
thermal efficiency of the cycle b) the net work done per kg of air
and the c) mean effective pressure
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
1.
b) Determine the relative specific volume at state 1.
c) Determine the relative...
A CI engine operating on the air standard diesel cycle has cylinder condtioons at the start...
A CI engine operating on the air standard diesel cycle has
cylinder condtioons at the start of compression of 65 degrees C and
130 kPa. light diesel fuel is used at an equivalence ratio of 0.8
with a combustion efficiency of 0.98. compression ratio = 18
Calculate:
temperature and pressure in each state of the cycle (0c)
pressure at each state of the cycle (kpa)
cutoff ratio
indicated thermal efficiency (%)
heat lost in exhaust (KJ/Kg)
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.
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
An air-standard Otto cycle operates with a compression ratio of 8. At the start of the...
An air-standard Otto cycle operates with a compression ratio of
8. At the start of the compression stroke, the pressure is 15 psia
and the temperature is 80 degrees F. The maximum pressure in the
cycle is 550 psia. Find a) the thermal efficiency of the cycle, b)
the specific volume at the start of the compression stroke, c) the
specific volume at the end of the compression stroke, and d)
maximum temperature in the cycle.
How many constant volume processes are modeled when analyzing an Air Standard Diesel cycle? Question 10...
How many constant volume processes are modeled when analyzing an
Air Standard Diesel cycle?
Question 10 options:
A)
2
B)
4
C)
1
D)
3
E)
0
The intial conditions for an air-standard Otto cycle operating with a compresssion ratio of 8:1 are...
The intial conditions for an air-standard Otto cycle operating
with a compresssion ratio of 8:1 are 14.7 psia and 60degF. At the
beginning of the compression stroke, the cylinder volume of 270
in^3 and 9 Btu of heat are added to the gas during the
constant-volume heating process. Calculate the thermal efficiency
and the mean effective pressure of the cycle.
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...
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