1) Calculate the density of air at 130 degrees F and 1.05 atmospheres of pressure? 2)...
1) Calculate the density of air at 130 degrees F and 1.05 atmospheres of pressure?
2) For STP conditions, the relationship between air velocity (V) and velocity pressure (VP) is V = 4005 sqrt (VP). What would the relationship between V and VP be using the density from the above question? (Hint: You must find the new constant).
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1) Calculate the density of air at 130 degrees F and 1.05
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The mass density of air on Mars is ρ=0.016 kg/m3. The gravity on Mars is gMars=...
The mass density of air on Mars is ρ=0.016 kg/m3. The gravity on Mars is gMars= 3.7 m/s2. The mass density of air on earth under standard pressure and temperature conditions is ρ=1.225 kg/m3. A NASA mars probe weighs 1000 N on Earth. At terminal velocity, the weight of a falling object is equal to the drag force. Assume that the drag coefficient of the parachute used is constant, and has the same value on both Earth or Mars, and...
1) Three perfect gases at 20.000C were allowed to mix. Calculate the total pressure and the...
1) Three perfect gases at 20.000C were allowed to mix. Calculate the total pressure and the partial pressure of each gas if the pressures and volumes of the individual gases before mixing were: (8 pts) Gas 1: Volume 1.0 L, pressure 1.5 bar Gas 2: Volume 1.5 L, pressure 2.0 bar Gas 3: Volume 2.5 L, pressure 3.0 bar 2) Humidity levels affects the density of air. Calculate the density difference between a sample of dry air and a sample...
Particles having size of 0.1mm, a shape factor of 0.8 and a density of 1650 kg/m'...
Particles having size of 0.1mm, a shape factor of 0.8 and a density of 1650 kg/m' are to be fluidized using air at 25°C (p=2.374 SI, u=1.45x10ʻSI) and 202.65kPa (abs pressure). The bed's height at minimum fluidizing conditions is Lmf=1.6m. The bed diameter is 0.5m and the bed height when the particles are at rest is Lo=1m. 3.1. What is the mass of particles to be used ? 3.2. Calculate the minimum void fraction of the fluidized bed? 3.3. Calculate...
chpt.9 pg 11: Pressure and temperature affect the amount of space between gas molecules, which affects...
chpt.9 pg 11: Pressure and temperature affect the amount of space between gas molecules, which affects the volume and, therefore, the density of the gas since density=massvolume The molar mass of a substance, however, is a constant and can be used to identify an unknown gas sample. Molar mass is found by dividing the mass of a sample (in grams) by the number of moles in that sample. The number of moles of gas can be calculated using the ideal...
The atmospheric pressure varies proportionally from sea level to height, and the air temperature ...
The atmospheric pressure varies proportionally from sea level to height, and the air temperature drops by 6K for every T km increase (a) Draw a cylindrical volume that is height inside the atmosphere, and then calculate the pressure change and expression (dP/dy-pg) depending on the height. (b) obtain the temperature change of the atmosphere accordingto the height y(km) in the place where the sea level (y-0) is at ToK temperature. (c) obtain a barometric equation which allows for the change...
Part B: Determine the pressure at the exit in lbf/in^2 (Ignoring heat transfer) Problem 4.026 Air...
Part B: Determine the pressure at the exit
in lbf/in^2 (Ignoring heat transfer)
Problem 4.026 Air enters a diffuser operating at steady state at 750°R, 15 lbf/in.2, with a velocity of 600 ft/s, and exits with a velocity of 60 ft/s. The ratio of the exit area to the inlet area is 6 Assuming the ideal gas model for the air and ignoring heat transfer, determine the temperature, in °R, and pressure, in lbf/in., at the exit. Part A Assuming...
part a-d 2 A paint sprayer pumps air through a constriction in a 0.025- m diameter pipe, as shown in the figure. The flow causes the pressure in the constricted area to drop and paint rises up th...
part a-d
2 A paint sprayer pumps air through a constriction in a 0.025- m diameter pipe, as shown in the figure. The flow causes the pressure in the constricted area to drop and paint rises up the feed tube and enters the air stream. The speed of the air stream in the 0.025-m diameter sections is 5.00 m/s. The density of the air is 1.29 kg/m3, and the density of the paint is 1200 kg/m3. We can treat the...
Problem2 (a) Suppose outside temperature is 55 °F while the temperature inside a building is 72 F. The building is heated but not air conditioned, so the partial pressure of water vapor is the sa...
Problem2 (a) Suppose outside temperature is 55 °F while the temperature inside a building is 72 F. The building is heated but not air conditioned, so the partial pressure of water vapor is the same both inside and outside the building. Finally, suppose the dew point outside is 40°F What is the dew point inside? What are the relative humidities inside and outside the building? (We are most comfortable if relative humidity is between 30% and 50%-This question shows why...
A laminar flow of constant density and constant viscosity at steady state flows thought the two...
A laminar flow of constant density and constant viscosity at steady state flows thought the two flat and parallel infinite plate. The upper plate is mowing while lower plate is stationary. The flow upper plate: moving is driven by the pressure gradient in the x direction. The velocity profile is desired to be derived for this system. Then - What are the correct answers? 20 lower plate: stationary ay c) PS, 0 200 b- Write the equation to find out...
1. Calculate what the pressure of the air is in the flask at each of the...
1. Calculate what the pressure of the air is in the
flask at each of the temperatures for Trials 1 through 5. The
temperature is related to the temperature (at constant volume and
number of moles) through Gay-Lussac's Law.
2. Calculate the natural logarithm of the vapor
pressures, ln(P/P^-), where P^- is 100 kPa.
3. Calculate the inverse of the absolute
temperatures.
4. Prepare a graph (either by hand or in excel) with
ln(P/P^-) plotted on the y-axis and 1/T...
Particles having size of 0.1mm, a shape factor of 0.8 and a density of 1650 kg/m' are to be fluidized using air at 25°C (p=2.374 SI, u=1.45x10ʻSI) and 202.65kPa (abs pressure). The bed's height at minimum fluidizing conditions is Lmf=1.6m. The bed diameter is 0.5m and the bed height when the particles are at rest is Lo=1m. 3.1. What is the mass of particles to be used ? 3.2. Calculate the minimum void fraction of the fluidized bed? 3.3. Calculate...
The atmospheric pressure varies proportionally from sea level to height, and the air temperature drops by 6K for every T km increase (a) Draw a cylindrical volume that is height inside the atmosphere, and then calculate the pressure change and expression (dP/dy-pg) depending on the height. (b) obtain the temperature change of the atmosphere accordingto the height y(km) in the place where the sea level (y-0) is at ToK temperature. (c) obtain a barometric equation which allows for the change...
Part B: Determine the pressure at the exit
in lbf/in^2 (Ignoring heat transfer)
Problem 4.026 Air enters a diffuser operating at steady state at 750°R, 15 lbf/in.2, with a velocity of 600 ft/s, and exits with a velocity of 60 ft/s. The ratio of the exit area to the inlet area is 6 Assuming the ideal gas model for the air and ignoring heat transfer, determine the temperature, in °R, and pressure, in lbf/in., at the exit. Part A Assuming...
part a-d
2 A paint sprayer pumps air through a constriction in a 0.025- m diameter pipe, as shown in the figure. The flow causes the pressure in the constricted area to drop and paint rises up the feed tube and enters the air stream. The speed of the air stream in the 0.025-m diameter sections is 5.00 m/s. The density of the air is 1.29 kg/m3, and the density of the paint is 1200 kg/m3. We can treat the...
Problem2 (a) Suppose outside temperature is 55 °F while the temperature inside a building is 72 F. The building is heated but not air conditioned, so the partial pressure of water vapor is the same both inside and outside the building. Finally, suppose the dew point outside is 40°F What is the dew point inside? What are the relative humidities inside and outside the building? (We are most comfortable if relative humidity is between 30% and 50%-This question shows why...
A laminar flow of constant density and constant viscosity at steady state flows thought the two flat and parallel infinite plate. The upper plate is mowing while lower plate is stationary. The flow upper plate: moving is driven by the pressure gradient in the x direction. The velocity profile is desired to be derived for this system. Then - What are the correct answers? 20 lower plate: stationary ay c) PS, 0 200 b- Write the equation to find out...
1. Calculate what the pressure of the air is in the
flask at each of the temperatures for Trials 1 through 5. The
temperature is related to the temperature (at constant volume and
number of moles) through Gay-Lussac's Law.
2. Calculate the natural logarithm of the vapor
pressures, ln(P/P^-), where P^- is 100 kPa.
3. Calculate the inverse of the absolute
temperatures.
4. Prepare a graph (either by hand or in excel) with
ln(P/P^-) plotted on the y-axis and 1/T...
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