Question
In: Mechanical Engineering
In an ideal standard dual cycle, the pressure and temperature at the beginning of compression are...
In an ideal standard dual cycle, the pressure and temperature at the beginning of compression are 1 bar and 47°C, respectively. The heat supplied in the cycle is 1250kJ/kg, two third of this heat is being added at constant volume and the remaining heat is added at constant pressure. If the compression ratio is 16, determine
i. the maximum temperature in cycle
ii. thermal efficiency of the cycle
iii. the mean effective pressure
Solutions
samet mamat answered 1 year agoRelated Solutions
At the beginning of the compression process of an air-standard dual cycle with a compression ratio...
At the beginning of the compression process of an air-standard
dual cycle with a compression ratio of 18, the temperature is 300K
and the pressure is 0.1 MPa. The pressure ratio for the constant
volume part of the heating process is 1:5:1. The volume ratio for
the constant pressure part of the heating process is 1:2:1.
Determine:
(a.) The temperature and pressure at the end of each process of
the cycle.
(b.) The thermal efficiency.
(c.) The mean effective pressure.
At the beginning of compression process of an air standard dual cycle operating with a compression...
At the beginning of compression process of an air standard dual
cycle operating with a compression ratio of 15.88, the pressure is
95 kPa and the temperature is 300 K. The cutoff ratio for the cycle
is 1.15. Determine the thermal efficiency of cycle, if the pressure
increases by a factor of 2.15 during the constant volume heat
addition process. Use table F2 for variation of specific heats with
temperature in the analysis.
At the beginning of compression of an ideal Diesel cycle the gas has a temperature and...
At the beginning of compression of an ideal Diesel cycle the gas
has a temperature and pressure of 400C and 90
kN/m2, respectively. The volume ratio of compression is
16:1. The maximum temperature of the cycle is 14000C.
Determine, for the cycle,
the pressure and temperature at each of the cycle process
change points,
[8]
the work done/kg gas,
[4]
the thermal efficiency,
[4]
the work ratio,
[3]
the mean effective pressure,...
An air-standard dual cycle has a compression ratio of 14. At the beginning of compression, p1...
An air-standard dual cycle has a compression ratio of 14. At the
beginning of compression, p1 = 14.5
lbf/in.2, V1 = 0.5 ft3,
and T1 = 50°F. The pressure doubles during the
constant-volume heat addition process.
For a maximum cycle temperature of 3500°R, determine:
(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
The compression ratio is 10 in the air standard Otto cycle. Pressure at the beginning of...
The compression ratio is 10 in the air standard Otto cycle.
Pressure at the beginning of the compression stroke is 1XY kPa and
the temperature is 15 ºC. The heat transfer to the air for each
cycle is 18XY kJ / kg air. Draw the T-s and P-v diagrams. (x=9
y=8).
Note: Accept that specific temperatures do not change with temperature. Take k = 1.4 and Cp = 1.0031 kJ / kg-K.
a)
For question 1, we draw the temperature...
An ideal Otto cycle has a compression ratio of 7. At the beginning of the compression...
An ideal Otto cycle has a compression ratio of 7. At the
beginning of the compression process, air is at 98 kPa, 30oC and
766 kJ/kg of heat is transferred to air during the constant-volume
heat addition process. Determine (a) the pressure (p3) and
temperature (T3) at the end of the heat addition process, (b) the
net work output, (c) the thermal efficiency and (d) the mean
effective pressure for the cycle. Use the IG model
An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression...
An ideal Otto cycle has a compression ratio of 8. At the
beginning of the compression process, air is at 95 kPa and 27°C,
and 900 kJ/kg of heat is transferred to air during the
constant-volume heat-addition process. Taking into account the
variation of specific heats with temperature, determine
(a) the pressure and temperature at the end of the
heat-addition process, (b) the net work output,
(c) the thermal efficiency, and (d) the mean
effective pressure for the cycle
An ideal Otto cycle has a compression ratio of 8.5 At the beginning of the compression...
An ideal Otto cycle has a compression ratio of 8.5 At the
beginning of the compression process, air is at 98 kPa and 27∘C, If
the Tmax cannot exceed 2300K and 3e-5 kg of. assuming constant
specific heats at ambient temperature, determine (a) the pressure
and temperature at the end of each process. (b) the net work
output, (c) the thermal efficiency, and (d) the mean effective
pressure for the cycle.
An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression...
An ideal Otto cycle has a compression ratio of 8. At the
beginning of the compression process, air is at 95 kPa and 27°C,
and 730 kJ/kg of heat is transferred to air during the
constant-volume heat-addition process. Take into account the
variation of specific heats with temperature. The gas constant of
air is R = 0.287 kJ/kg·K.
Determine:
(a) the pressure and temperature at the end of the heat addition
process
(b) the net work output
(c) the thermal...
An ideal dual cycle has a compression ratio of 15 and a cutoff ratio of 1.4....
An ideal dual cycle has a compression ratio of 15 and a cutoff
ratio of 1.4. The pressure ratio during constant-volume heat
addition process is 1.1. The state of the air at the beginning of
the compression is P1 = 98 kPa and T1 = 24°C.
Calculate the cycle’s net specific work, specific heat addition,
and thermal efficiency. Use constant specific heats at room
temperature.
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- How am I supposed to implement a c_str method that returns a c string representation of...
- NPV Your division is considering two investment projects, each of which requires an up-front expenditure of...
- Please repond with a 200 word limit paragraph no copy or paste your own words!!! What...
- Participant Reactivity Think about how participants might react to environmental cues in an experimental situation and...
- Describe scenarios when you would use a Fixed-size virutal disk, a Dynamic virtual disk, and a...
- A conductive sphere with radius ? = 1 ? has been increased to the potential ?0...
- Define a char variable. Read a char value from the keyboard into the variable. Print the...
ADVERTISEMENT