Question
In: Mechanical Engineering
Air is compressed from 100 Kpa and 22 C to an outlet pressure 8 times greater....
Air is compressed from 100 Kpa and 22 C to an outlet pressure 8 times greater. The compressor is not well insulated and loses heat at a rate of 120 kJ/kg. It is also note that there is a decrease in the entropy of the air of 0.4 kJ/kg-K between the inlet & the outlet. Assuming constant specific heats determine a) The outlet air temperature b) The required work input (kJ/kg) c) The entropy generation sgen (kJ/kg-K) during the compression process
Solutions
samet mamat answered 2 years agoRelated Solutions
Air is compressed from an inlet condition of 100 kPa, 300 K to an exit pressure...
Air is compressed from an inlet condition of 100 kPa, 300 K to
an exit pressure of 1000 kPa by an internally reversible
compressor. Determine the compressor power per unit mass flow rate
if the device is
(a) isentropic,
(b) polytropic with n =1.3,
(c) isothermal.
Air is compressed from an inlet condition of 100 kPa, 300 K to an exit pressure...
Air is compressed from an inlet condition of 100 kPa, 300 K to
an exit pressure of 1000 kPa by an internally reversible
compressor. Determine the compressor power per unit mass flow rate
if the device is
(a) isentropic,
(b) polytropic with n =1.3,
(c) isothermal.
Air enters the compressor at 100 kPa, 300 K and is compressed to 1000 kPa. The...
Air enters the compressor at 100 kPa, 300 K and is compressed to
1000 kPa. The temperature at the inlet to the first turbine stage
is 1400 K. The expansion takes place isentropically in two stages,
with reheat to 1400 K between the stages at a constant pressure of
300 kPa. A regenerator having an effectiveness of 100% is also
incorporated into the cycle. The turbine and the compressor each
have am isentropic efficiency of 80%. Determine the following:
(a.)...
In an Otto cycle air is compressed from an initial pressure 120 kPa and temperature 370...
In an Otto cycle air is compressed from an initial
pressure 120 kPa and temperature 370 T (K). The cycle has
compression ratio of 10. In the constant volume heat addition
process 1000 kJ/kg heat is added into the air. Considering
variation on the specific heat of air with temperature,
determine,
(a) the pressure and temperature at the end of heat
addition process (show the points on P-v diagram)
(b) the network output
(c) the thermal efficiency
(d) the mean...
QUESTION NO 1 In an Otto cycle air is compressed from an initial pressure 120 kPa...
QUESTION NO 1
In an Otto cycle air is compressed from an initial pressure 120
kPa and temperature (T = 380). The cycle has compression ratio of
10. In the constant volume heat, addition process 1000 kJ/kg heat
is added into the air. Considering variation on the specific heat
of air with temperature, determine,
(a) the pressure and temperature at the end of heat addition
process (show the points on P-v diagram)
(b) the network output
(c) the thermal efficiency...
In an Otto cycle air is compressed from an initial pressure 120 kPa and temperature 370...
In an Otto cycle air is compressed from an initial
pressure 120 kPa and temperature 370 T (K). The cycle has
compression ratio of 10. In the constant volume heat addition
process 1000 kJ/kg heat is added into the air. Considering
variation on the specific heat of air with temperature,
determine,
(a) the pressure and temperature at the end of heat
addition process (show the points on P-v diagram)
(b) the network output
(c) the thermal efficiency
(d) the mean...
A mass of 0.07 kg of air at a temperature of 30°C and pressure 100 kPa...
A mass of 0.07 kg of air at a temperature of 30°C and pressure
100 kPa is compressed to a pressure of 600 kPa, according to the
law:
(i.e. Polytropic process, n=1.3). Determine:
i.The final volume
ii.The final temperature
iii.The work transfer
iv.The change in internal energy
v.The heat transfer
An adiabatic air compressor with inlet conditions of 100 kPa, 27 C and an exit pressure...
An adiabatic air compressor with inlet conditions of 100 kPa, 27
C and an exit pressure of 500 kPa has an inlet volume flow rate of
5 m3/s and operates in steady flow. Calculate the minimum power
required to drive the compressor.
Air is at 100 kPa and 150°C, and undergoes a constant pressure process. The final temperature...
Air is at 100 kPa and 150°C, and undergoes a constant
pressure process. The final temperature of the air is 1000°C.
a) Compute the specific volume ratio.
b) Compute the boundary work (kJ/kg)
c) Compute the change in specific internal energy
by:
1. Using the tables.
2. Integrating the polynomial (cp)
3. Assuming constant specific heat.
d) Repeat c for specific enthalpy
e) Compute the heat
Air is supplied to a convergent–divergent nozzle from a reservoir where the pressure is 100 kPa....
Air is supplied to a convergent–divergent nozzle from a
reservoir where the pressure is 100 kPa. The air is then
discharged
through a short pipe into another reservoir where the
pressure
can be varied. The cross-sectional area of the pipe is twice
the
area of the throat of the nozzle. Friction and heat transfer may
be
neglected throughout the flow. If the discharge pipe has
constant
cross-sectional area, determine the range of static pressure in
the
pipe for which a...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- The following information is available for Robstown Corporation for 20Y8: Inventories January 1 December 31 Materials...
- /* Complete the TO DO comments below */ window.onload = function() { /* TODO add a...
- Trevor Price bought 10-year bonds issued by Harvest Foods five years ago for $4,532.35. The bonds...
- How do you represent 5.1 (5 + 1/10) in binary? I know that it is 0101....
- More and more adults are considering commuting to work by bicycle rather than car, but few...
- Please answer these questions Data Processing and Analysis using python. Thank you In statistics, an outlier...
- Write a function file that accepts each of the four vectors as inputs. The function file...
ADVERTISEMENT