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 6 months 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,...
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...
A cold air-standard Otto cycle has a compression ratio of 6 and the temperature and pressure...
A cold air-standard Otto cycle has a compression ratio of 6 and
the temperature and pressure at the beginning of the compression
process are 520°R and 14.2 lbf/in.2, respectively. The heat
addition per unit mass of air is 500 Btu/lb. Assume constant
specific heats evaluted at 520°R. Determine:
(a) the maximum temperature, in °R.
(b) the maximum pressure, in lbf/in.2
(c) the percent thermal efficiency.
(d) the mean effective pressure, in lbf/in.2
Consider an ideal Brayton cycle with reheat (air standard). The pressure and temperature of the air...
Consider an ideal Brayton cycle with reheat (air standard). The
pressure and temperature of the air at the inlet of the gas turbine
is 1200 kPa and 1000 K respectively. Assume the gas expands to 100
kPa in two stages. Between the stages, the air is reheated at a
constant pressure of 350 kPa to 1000 K. Assume a fully isentropic
process in the turbines.
Find:
(a) the work produced at each stage, in kJ/kg of air flowing.
(b) the...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Explain how an economy can experience long-run economic growth and deflation at the same time?
- A television channel is assigned the frequency range from 54 MHz to 60 MHz. A series...
- You want to conduct an experiment to understand how the power generated by a wind turbine...
- A prime number (or prime) is a natural number greater than 1 that has no posítive...
- Write a program(Java) to compute modular exponentiation: take g (base), e (exponent), and, N (modulas) as...
- A solvent-extraction process usingN,N − diethyldodecanamide, which is insoluble in water and has a density of...
- Len is a 59 kg pole vaulter and he falls from a peak height of 5.0...
ADVERTISEMENT