Find the resistance R (Ns2/m8) of a 100 m length of an airway where the friction...
Find the resistance R (Ns2/m8) of a 100 m length of an airway where the friction factor k is 0.012 Ns2/m4, the airway profile is 3.0 x 5.0 m, and the air density is 1.17 kg/m3. What is the frictional pressure loss when a ventilation rate of 45 m3/s flows through 450 m of the airway?
Homework Answers
The frictional pressure drop, p, depends upon the air density, the atkinson resistance R as well as the geometry of the airway for any given airflow Q.
Add Answer to:
Find the resistance R (Ns2/m8) of a 100 m
length of an airway where the friction...
A commercial steel pipe with inside diameter = 0.06 m and length = 40 m, the...
A commercial steel pipe with inside diameter = 0.06 m and length = 40 m, the volumetric flow rate of liquid is 10 m3/h. Calculate the pressure drop if the friction factor = 0.0042. Density of liquid =1200 kg/m3. Select one: O a. 12662.72 N/m2 O b. 12960.51 N/m2 O c. 12556.77 N/m O d. 12997.81 N/m2 e. 11245.61 N/m2
4. In a cylindrical pipe of uniform diameter D, the pressure loss per unit length (pa/m)...
4. In a cylindrical pipe of uniform diameter D, the pressure loss per unit length (pa/m) due to viscous effects can be computed using the Darcy-Weisbach equation: Use a first order error analysis to determine the error in the pressure loss for a fluid of with density ρ=876±3 kg/m3 flowing in a pipe of diameter D 0.45 ±0.001 m with a mean velocity of u 10t0.1 m/s. The Darcy-Weisbach factor is gives as fp 0.064 ves as JD
A U-tube contains liquid of unknown density. An oil of density 770 kg/m³ is poured into...
A U-tube contains liquid of unknown density. An oil of density
770 kg/m³ is poured into one arm of the tube until the oil column
is 13.5 cm high. The oil-air interface is then 4.5 cm above the
liquid level in the other arm of the U-tube. Find the density of
the liquid.
A raft is made of 11 logs lashed together. Each is 38.0 cm in
diameter and has a length of 7.00 m. How many people (whole number)...
Question D.1 A2 Not sure Water flows between two tanks connected by a 100 m long pipe as shown in figure D1-1 below The tanks have a free surface height difference of 15 m and are both open to a...
Question D.1 A2 Not sure Water flows between two tanks connected by a 100 m long pipe as shown in figure D1-1 below The tanks have a free surface height difference of 15 m and are both open to atmosphere. The first 30 m of pipe from the upper tank (section 1) has an internal diameter of 50 mm and a friction factor of 0.006, whilist the remaining 70m of pipe (section 2) has an internal diameter mm and a...
hair dryer may be idealized as a circular duct through which a small fan draws ambient...
hair dryer may be idealized as a circular duct through which a
small fan draws ambient air and within which the air is heated as
it flows over a coiled electric resistance wire.
(1) If a dryer is designed to operate with an electric power
consumption of Pelec= 1500 W and to heat air from an ambient
temperature of Ti= 20°C to a discharge temperature of To= 45°C, at
what volumetric flow rate ∀˙ should the fan operate? Heat loss...
Q5. Sketching a suitable control volume, show that the velocity profile V(r) for steady, fully laminar...
Q5. Sketching a suitable control volume, show that the velocity profile V(r) for steady, fully laminar flow in a horizontal pipe is given by V(r)- whereis is the pressure drop per unit length of pipe, R is the pipe radius and u the dynamic viscosity of the fluid. (10 marks) Thereafter develop Poiseuille's law for the volume flow rate O in the form SuL (10 marks) Hence show that the head loss h is given by where Vis the mean...
FMA360 1 AY 2018 ASSIGNMENT 1 0.003 m3/s of water at 20°C is required to be transported between two locations 400 m apart. Assuming there is no fittings, find the appropriate drawn tubing to be used...
FMA360 1 AY 2018 ASSIGNMENT 1 0.003 m3/s of water at 20°C is required to be transported between two locations 400 m apart. Assuming there is no fittings, find the appropriate drawn tubing to be used if the head loss must not exceed 25m There are 3 different diameters for you to choose from, 3.0 cm, 4.0 cm, 5.0 cm. Use the attached Moody diagram for your calculations Temperature Pressure Density Dynamic viscosity Kinematic viscosity Pa kg/m kg/ms 101325 999.19...
A 38-in pump is installed for the system below. The pipe (100-cm diameter) has a friction...
A 38-in pump is installed for the system below. The pipe (100-cm diameter) has a friction factor of 0.012 and a total length of 20 km. Given that Ke-0.5 (pipe entrance) and K = 1.0 (pipe exit). For water at 80 degrees Fahrenheit, estimate the flow rate (in gpm), the power required (in horsepower, HP), and the net positive suction head required (in ft) to avoid cavitation for the system when the pump running. 180 m Elevation V Elevation =...
How to solve question 44 s the anoint P, where FIGURE P13.40 gauge pressure of the...
How to solve question 44
s the anoint P, where FIGURE P13.40 gauge pressure of the the needle meets the wider chamber of the syringe? A 6 General Problems 41 Il As discussed in Section 13.4, a person' of titanium is 4.5 g/cm3. 125 g of titanium iss weight of the sph l The shaped into a cube. What is the length of each edge? You need to d s percentage of body fat suspend it R0 can be estimated...
Encircle the correct answer for the following questions: • What is the hydraulic diameter of a...
Encircle the correct answer for the following questions: • What is the hydraulic diameter of a rectangular air ventilation duet whose cross section is 1 m by 25 cm? (a) 25 cm (b) 40 cm (c) 100 cm (d) 75 cm (e) 50 cm Oil = 0.1kg/ms, specific gravity= 0.9] flows through a 50-m-long smooth 8-cm-diameter pipe. The maximum pressure drop for which laminar flow is expected is approximately • • (a) 40 kPa (b) 50 kPa (c) 60 kPa...
A commercial steel pipe with inside diameter = 0.06 m and length = 40 m, the volumetric flow rate of liquid is 10 m3/h. Calculate the pressure drop if the friction factor = 0.0042. Density of liquid =1200 kg/m3. Select one: O a. 12662.72 N/m2 O b. 12960.51 N/m2 O c. 12556.77 N/m O d. 12997.81 N/m2 e. 11245.61 N/m2
4. In a cylindrical pipe of uniform diameter D, the pressure loss per unit length (pa/m) due to viscous effects can be computed using the Darcy-Weisbach equation: Use a first order error analysis to determine the error in the pressure loss for a fluid of with density ρ=876±3 kg/m3 flowing in a pipe of diameter D 0.45 ±0.001 m with a mean velocity of u 10t0.1 m/s. The Darcy-Weisbach factor is gives as fp 0.064 ves as JD
A U-tube contains liquid of unknown density. An oil of density
770 kg/m³ is poured into one arm of the tube until the oil column
is 13.5 cm high. The oil-air interface is then 4.5 cm above the
liquid level in the other arm of the U-tube. Find the density of
the liquid.
A raft is made of 11 logs lashed together. Each is 38.0 cm in
diameter and has a length of 7.00 m. How many people (whole number)...
Question D.1 A2 Not sure Water flows between two tanks connected by a 100 m long pipe as shown in figure D1-1 below The tanks have a free surface height difference of 15 m and are both open to atmosphere. The first 30 m of pipe from the upper tank (section 1) has an internal diameter of 50 mm and a friction factor of 0.006, whilist the remaining 70m of pipe (section 2) has an internal diameter mm and a...
hair dryer may be idealized as a circular duct through which a
small fan draws ambient air and within which the air is heated as
it flows over a coiled electric resistance wire.
(1) If a dryer is designed to operate with an electric power
consumption of Pelec= 1500 W and to heat air from an ambient
temperature of Ti= 20°C to a discharge temperature of To= 45°C, at
what volumetric flow rate ∀˙ should the fan operate? Heat loss...
Q5. Sketching a suitable control volume, show that the velocity profile V(r) for steady, fully laminar flow in a horizontal pipe is given by V(r)- whereis is the pressure drop per unit length of pipe, R is the pipe radius and u the dynamic viscosity of the fluid. (10 marks) Thereafter develop Poiseuille's law for the volume flow rate O in the form SuL (10 marks) Hence show that the head loss h is given by where Vis the mean...
FMA360 1 AY 2018 ASSIGNMENT 1 0.003 m3/s of water at 20°C is required to be transported between two locations 400 m apart. Assuming there is no fittings, find the appropriate drawn tubing to be used if the head loss must not exceed 25m There are 3 different diameters for you to choose from, 3.0 cm, 4.0 cm, 5.0 cm. Use the attached Moody diagram for your calculations Temperature Pressure Density Dynamic viscosity Kinematic viscosity Pa kg/m kg/ms 101325 999.19...
A 38-in pump is installed for the system below. The pipe (100-cm diameter) has a friction factor of 0.012 and a total length of 20 km. Given that Ke-0.5 (pipe entrance) and K = 1.0 (pipe exit). For water at 80 degrees Fahrenheit, estimate the flow rate (in gpm), the power required (in horsepower, HP), and the net positive suction head required (in ft) to avoid cavitation for the system when the pump running. 180 m Elevation V Elevation =...
How to solve question 44
s the anoint P, where FIGURE P13.40 gauge pressure of the the needle meets the wider chamber of the syringe? A 6 General Problems 41 Il As discussed in Section 13.4, a person' of titanium is 4.5 g/cm3. 125 g of titanium iss weight of the sph l The shaped into a cube. What is the length of each edge? You need to d s percentage of body fat suspend it R0 can be estimated...
Encircle the correct answer for the following questions: • What is the hydraulic diameter of a rectangular air ventilation duet whose cross section is 1 m by 25 cm? (a) 25 cm (b) 40 cm (c) 100 cm (d) 75 cm (e) 50 cm Oil = 0.1kg/ms, specific gravity= 0.9] flows through a 50-m-long smooth 8-cm-diameter pipe. The maximum pressure drop for which laminar flow is expected is approximately • • (a) 40 kPa (b) 50 kPa (c) 60 kPa...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago