Question
In: Mechanical Engineering
air at a temperature of 500c id compressed at a constant pressure of 1.2mpa from a...
air at a temperature of 500c id compressed at a constant
pressure of 1.2mpa from a volume of 2cu meters to volume of 0.4 cu
meters. If the initial internal energy decrease 4820kj find a. The
work done during the reversible process b. The heat transfered c.
The change of enthalpy.
Solutions
samet mamat answered 2 years agoRelated Solutions
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...
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...
Air flows through a constant area duct. The pressure and temperature of the air at the...
Air flows through a constant area duct. The pressure and
temperature of the air at the inlet to the duct are P1 = 100 kPa
absolute, and T1 = 298 K, respectively. Inlet Mach number is M1 =
0.1. Heat is transferred to the air as it flows through the duct
and as a result the Mach number at the exit increases.
Write a Matlab code and plot the following:
a) Find the pressure and temperature at the
exit, while...
A gas is compressed at a constant pressure of 0.800 atm from 9.00 L to 2.00...
A gas is compressed at a constant pressure of 0.800 atm from
9.00 L to 2.00 L. In the process, 350 J of energy leaves the gas by
heat.
(a) What is the work done on the gas?
J
(b) What is the change in its internal energy?
J
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
In a gas turbine plant, air is compressed through a pressure ratio of 6 from 15...
In a gas turbine plant, air is compressed through a pressure
ratio of 6 from 15 ?C. It is then heated to the maximum permissible
temperature of 750 ?C and expanded in two stages each of expansion
ratio ?6, the air being reheated between the stages to 750 ?C. A
heat exchanger allows the heating of the compressed air through 75
percent of the maximum range possible. Calculate the cycle
efficiency, the work ratio and the net work output per...
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...
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.
Calculate the theoretical flame temperature for CO gas burned at constant pressure with 100% excess air,...
Calculate the theoretical flame temperature for CO gas burned
at constant pressure with 100% excess air, when the reactants enter
at 100°C.
Please show work, do not copy the
solution founded. show your solution! if you can not answer this
question, then do not attempt to copy others' work.
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