a tire is filled with air at 14 ∘c to a gauge pressure of 230
kpa...
a tire is filled with air at 14 ∘c to a gauge pressure of 230
kpa
If the tire reaches a temperature of 35 ∘C∘C, what fraction of
the original air must be removed if the original pressure of 230
kPakPa is to be maintained?
The air pressure inside the tube of a car tire is 353 kPa at a
temperature of 14.0 °C. What is the pressure of the air, if the
temperature of the tire increases to 63.0 °C? Assume that the
volume of the tube doesn't change.
What is the air pressure inside the tube, if the volume of the
tube is not constant, but it increases from 21.0 l to 21.9 l during
the warming process described above?
Atmospheric air, at constant conditions, 102 kPa pressure and
30 ° C to a air conditioning system
enters at 60% relative humidity at temperature. The volumetric
flow of atmospheric air is 100 L / s. Air,
It is separated from the air conditioning system at a pressure
of 95 kPa and a temperature of 15 ° C at 100% relative
humidity.
In this process, the temperature of the condensing water is 15
° C. This air conditioning
Calculate the heat...
Air at a pressure of 350 kPa, a temperature of 80°C, and a
velocity of 180 m/s enters a convergent–divergent nozzle. A normal
shock occurs in the nozzle at a location where the Mach number is
2. If the air mass flow rate through the nozzle is 0.7 kg/s, and if
the pressure on the nozzle exit plane is 260 kPa, find the nozzle
throat area, the nozzle exit area, the temperatures upstream and
downstream of the shock wave, and...
An automobile tire has a maximum rating of 38.0 psi (gauge
pressure). Part A The tire is inflated (while cold) to a volume of
11.8 L and a gauge pressure of 36.0 psi (Note: The gauge pressure
is the difference between the total pressure and atmospheric
pressure. In this case, assume that atmospheric pressure is 14.7
psi.) at a temperature of 12.0 ∘C. While driving on a hot day, the
tire warms to 65.0 ∘C and its volume expands to...
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
Air at 50 ° C with 1.7 bar gauge pressure enters the
cylindrical bearing system, the diameter of which is below, and
standing in an upright position, with an average flow rate of 2.6 m
/ s for drying purposes. In the fluid state, the porosity value of
the bed is desired to be 0.61 m and its height 0.53 m. Inside the
bed are fresh kidney beans with a diameter of 8 mm.
a). When the air enters the...
Each front tire of a vehicle is supposed to be filled to a
pressure of 25 psi (pounds per square inch). Suppose that X and Y
are random variables giving the actual air pressure on the right
and left tires, respectively. Suppose the joint pdf is given by
f(x,y)=K(x^2+y^2) for x and y between 20 and 30.
Calculate the value K must have for this to be a pdf.
Calculate the probability that both tires are
underfilled with air....
A balloon filled with helium has a volume of 30.0 L at a pressure of 75 kPa and a temperature of 35.0°C. What will the volume of the balloon be if the temperature is increased to 67.0°C and the pressure remains constant?
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 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