Fluid Mechanics: Fundamentals and Applications
4th Edition
ISBN: 9781259696534
Author: Yunus A. Cengel Dr., John M. Cimbala
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 5, Problem 13P
The ventilating fan of the bathroom of a building (Fig: P5-13) has a volume flow rate of 50 L/s and runs continuously. If the density of air inside is 1.20 kg /m3, determine the mass of air vented out in one day.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A garden hose attached with a nozzle is used to fill a 20 Liters bucket. The inner diameter of the hose is d
bose -8 cm, and it reduces to d nozzle
water, determine average velocity (m/s) of water at the nozzle exit.
= 3.24 cm at the nozzle exit. If it takes 50 seconds to fill the bucket with
,Nozzle
Garden
hose
Bucket
Firefighters are holding a nozzle at the end of a hose while
trying to extinguish a fire. The nozzle inlet and exit diameters
are 15 cm and 6 cm, respectively and the water flow rate is 5
m/min. If the inlet pressure is 4 bar absolute,
5 m'min
(a) Determine the average water inlet velocity in m/s (
(b) Determine the average water exit velocity in m/s
(b) By neglecting the body and friction force across the nozzle, find the horizontal resistance force
required of the firefighters to hold the nozzle in kN. (1
(c) Fill the table below )
Question
Answer (Unit]
(a)
(b)
(c)
Water is flowing in a pipeline 600 cm above datum level has a velocity of 10 m/s
and is at a gauge pressure of 30 KN/m2. If the mass density of water is 1000
kg/m3, what is the total energy per unit weight of the water at this point? Assume
.acceleration due to Gravity to be 9.81 m/s2
5m O
11 m
111 m O
609 m O
Chapter 5 Solutions
Fluid Mechanics: Fundamentals and Applications
Ch. 5 - Does the amount of mass entering a control volume...Ch. 5 - Define mass and volume flow rates. How are they...Ch. 5 - Name four physical quantities that are conserved...Ch. 5 - When is the flow through a control volume steady?Ch. 5 - Consider a device with one inlet and one outlet....Ch. 5 - A hair dryer is basically a duct of constant...Ch. 5 - A garden hose attached with a nozzle is used to...Ch. 5 - Air whose density is 0.082 Ibm/ft3 enters the duct...Ch. 5 - A 0.7$-m3 rigid tank initially contains air whose...Ch. 5 - Consider the flow of an incompressible Newtonian...
Ch. 5 - A desktop computer is to be cooled by a fan whose...Ch. 5 - The minimum fresh air requirement of a residential...Ch. 5 - The ventilating fan of the bathroom of a building...Ch. 5 - Air enters a nozzle steadily at 2.21 kg/m3 and 20...Ch. 5 - Air at 40°C flow steadily through the pipe shown...Ch. 5 - In climates with low night-time temperatures, an...Ch. 5 - What is mechanical energy? How does it differ from...Ch. 5 - Define turbine efficiency, generator efficiency,...Ch. 5 - What is mechanical efficiency? What does a...Ch. 5 - How is the combined pump-motor efficiency of a...Ch. 5 - Prob. 21PCh. 5 - A differential thermocouple with sensors at the...Ch. 5 - Electric power is to be generated by installing a...Ch. 5 - Consider a river flowing toward a lake at an...Ch. 5 - Express the Bernoulli equation in three different...Ch. 5 - What are the three major assumptions used in the...Ch. 5 - Define static, dynamic, and hydrostatic pressure....Ch. 5 - What is streamwise acceleration? How does it...Ch. 5 - What is stagnation pressure? Explain how it can be...Ch. 5 - Define pressure head, velocity head, and elevation...Ch. 5 - How is the location of the hydraulic grade line...Ch. 5 - Prob. 33CPCh. 5 - What is the hydraulic grade line? How does it...Ch. 5 - A glass manometer with oil as the working fluid is...Ch. 5 - The velocity of a fluid flowing in a pipe is to be...Ch. 5 - The water level of a tank on a building roof is 20...Ch. 5 - Prob. 38CPCh. 5 - Prob. 39CPCh. 5 - In a hydroelectric power plant, water enters the...Ch. 5 - A Pitot-static probe is used to measure the speed...Ch. 5 - The air velocity in the duct of a heating system...Ch. 5 - A piezometer and a Pitot tube are tapped into a...Ch. 5 - The diameter of a cylindrical water tank is D0and...Ch. 5 - A siphon pumps water from a large reservoir to a...Ch. 5 - Water flows through a horizontal pipe at a rate of...Ch. 5 - An airplane is flying at an altitude of 10.500 m....Ch. 5 - While traveling on a dirt road, the bottom of a...Ch. 5 - The water in an 8-rn-diameter, 3-rn-high...Ch. 5 - Reconsider Prob. 5-49. Determine how long it will...Ch. 5 - Air at 105 kPa and 37°C flows upward through a...Ch. 5 - Water at 20°C is siphoned from a reservoir as...Ch. 5 - The water pressure in the mains of a city at a...Ch. 5 - A pressurized tank of water has a 10-cm-diameter...Ch. 5 - Air is flowing through a venturi meter whose...Ch. 5 - The water level in a tank is 20 m above the...Ch. 5 - The air velocity in a duct is measured by a...Ch. 5 - In cold climates, water pipes may freeze and burst...Ch. 5 - Prob. 61PCh. 5 - A fluid of density and viscosity flows through a...Ch. 5 - What is the minimum diameter at section (1) to...Ch. 5 - What is irreversible head loss? How is it related...Ch. 5 - What is useful pump head? How is it related to the...Ch. 5 - Consider the steady adiabatic flow of an...Ch. 5 - Consider the steady adiabatic flow of an...Ch. 5 - What is the kinetic energy correction factor? Is...Ch. 5 - The water level in a tank is 20 m above the...Ch. 5 - A 3-rn-high tank filled with water has a discharge...Ch. 5 - A person is filling a knee-high bucket with water...Ch. 5 - Tater is being pumped from a large lake to a...Ch. 5 - A 15-hp (shaft) pump is used to raise water to a...Ch. 5 - Water flows at a rate of 0.040 m3/s in a...Ch. 5 - The water level in a tank is 20 m above the...Ch. 5 - A hydraulic turbine has 50 m of head available at...Ch. 5 - In a hydroelectric power plant, water flows from...Ch. 5 - Reconsider Prob. 5-78E. Determine the flow rate of...Ch. 5 - A fan is to be selected to ventilate a bathroom...Ch. 5 - Water flows at a rate of 20 L/s through a...Ch. 5 - The water level in a tank is 34 ft above the...Ch. 5 - A large tank is initially filled with water 4 m...Ch. 5 - Water enters a hydraulic turbine through a...Ch. 5 - A 78-percent efficient 12-hp pump is pumping water...Ch. 5 - Water is pumped from a lower reservoir to a higher...Ch. 5 - Water in a partially filled large tank is to be...Ch. 5 - Underground water is to be pumped by a 78 percent...Ch. 5 - Reconsider Prob. 5-88. Determine the flow rate of...Ch. 5 - The velocity profile for turbulent flow in a...Ch. 5 - The demand for electric power is usually much...Ch. 5 - Prob. 92PCh. 5 - Consider a fully filled hemisphere shaped tank...Ch. 5 - The velocity of a liquid flowing in a circular...Ch. 5 - Air at 250 kgrn3 enters a nozzle that has an...Ch. 5 - The air in a 5m5-m3-m hospital room is to be...Ch. 5 - The water level in a tank is 70 ft above the...Ch. 5 - A pressurized 2-rn-diameter tank of water has a...Ch. 5 - Underground water is being pumped into a pool...Ch. 5 - Prob. 100PCh. 5 - A very large tank contains air at 102 kPa at a...Ch. 5 - Water is flowing through a Venturi meter whose...Ch. 5 - Water flows at a rate of 0.011 m3/s in a...Ch. 5 - Air flows through a pipe at a rate of 120 L/s. The...Ch. 5 - A 3-rn-high large tank is initially filled with...Ch. 5 - Reconsider Prob. 5-105. In order to dram the tank...Ch. 5 - A D0= 1 2-rn-diameter tank is initially filled...Ch. 5 - An oil pump is drawing 18 kW of electric power...Ch. 5 - A wind tunnel draws atmospheric air at 20°C and...Ch. 5 - Consider a spherical tank containing compressed...Ch. 5 - A tank with openings 1,2, and 3 is moving to left...Ch. 5 - Two dimensionally identical containers are...Ch. 5 - A circular thin plate is placed on the top of a...Ch. 5 - A pump-storage plant uses a turbine to generate...Ch. 5 - A diffuser in a pipe flow is basically a slow...Ch. 5 - Prob. 117PCh. 5 - Prob. 118PCh. 5 - Prob. 119PCh. 5 - Air enters a steady-flow compressor at 1 atm and...Ch. 5 - A 7$-m-high water body that is open to the...Ch. 5 - Prob. 122PCh. 5 - Prob. 123PCh. 5 - A hydraulic turbine is used to generate power by...Ch. 5 - The efficiency of a hydraulic turbine-generator...Ch. 5 - Which one is not an assumption involved with the...Ch. 5 - Consider incompressible, frictionless flow of a...Ch. 5 - Consider incompressible, frictionless flow of...Ch. 5 - Consider water flow in a piping network. The...Ch. 5 - The static and stagnation pressures of a fluid in...Ch. 5 - The static and stagnation pressures of a fluid in...Ch. 5 - The difference between the heights of energy grade...Ch. 5 - Water at 120 kPa (gage) is flowing in a horizontal...Ch. 5 - Water is withdrawn a the bottom of a large tank...Ch. 5 - Water at 80 kPa (gage) enters a horizontal pipe at...Ch. 5 - Liquid ethanol (p = 783 kg/m3) at a pressure of...Ch. 5 - Seawater is to be pumped into a large tank at a...Ch. 5 - An adiabatic pump is used to increase the pressure...Ch. 5 - The shaft power from a 90 percent-efficient...Ch. 5 - Using a 1are bucket whose volume is known and...Ch. 5 - Your company is setting up an experiment that...Ch. 5 - Computer-aided designs, the use of better...Ch. 5 - Using a handheld bicycle pump to generate an air...Ch. 5 - Using a flexible drinking straw and a ruler,...Ch. 5 - The power generated by a wind turbine is...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- A water is flowing through the duct having daimeter 15 cm and length 15 m. The inlet temperature of water is 100 °C & exit temperature is 5 °C respectively. Calculate the mass flow rate of water through the duct in mol/sec by considering heat transfer due to convection. Individual heat transfer coefficent is 15 w/m2K.arrow_forwardShown on the figure below is an open tank that contains water at 10 °C. Incoming water are from the top portion of the tank at 10 kilogram per second and at the left side water inlet section of the tank. Water discharges at the lower right section of the tank at a velocity of 4 meters per second. In order to maintain the water level in the tank at a height (h) of 10 meters, the inlet mass velocity of water situated at the left side section of the tank is Blank 1 kg / m²-s. *Express your answers in whole significant figure without decimal value and without unit* Water at 10 kg/sec Water inlet h = 10 m D = 50 mm D = 70 mm Water outlet at 4 m/secarrow_forwardWe use a 5 meter long cable with linear mass density of 9 kg/m to lift a bucket of water with total mass of 15 kg (that is the mass of the bucket and the water). The bucket is leaking water out of a small hole in the bottom at a rate of 3 kg per meter lifted. Find the total amount of work done to lift the bucket 4 meters. Do not include any units in your answer.arrow_forward
- A centrifugal pump is required to handle 50 lit/sec of gasoline against a net pressure of 4 kg/cm², Determine the head in m of liquid and the HP required by the pump, if its overall efficiency is 62%. Take the specific gravity of gasoline as 0.7. (57 and 43) A centrifugal pump draws water from a sump through a vertical 15 cm pipe. The pump has a horizontal discharge pipe 10 cm diameter which is 3.5 m above water level in the sump. While pumping 35 lit/sec, gauges near the pump at entrance and discharge read kg/cm respectively. The discharge gauge is 0.5 m above the suction gauge. Determine the horsepower output of the pump. 0.35 kg/cm and+1.8 (10.82) - To p. edict the performance of a loge centrifugal pump, its model, having р. the following specification, was made: P=24 IIP H=8 m N=925 rpm Diameter of model pump impeller is 9 times smaller than that of the prototype. The prototype pump has to work against a head of 30 m. Find its working speed and HP required to drive it. Determine…arrow_forwardA reciprocating compressor draws in 500 cubic feet per minute of air whose density is 0.079 Ib/ft^3 and discharge it with density of 0.304 lb/ft 3. At the suction P1-15 psia: at discharge. P2-80 psia. The increase in the specific internal energy is 33.8 BTU/b and the heat transferred from the air by cooling is 13 BTU/lb. Determine the work on the air in BTU/lb. Neglect change in kinetic energyarrow_forward2- 8 Air flows at a speed of 6.5 m/s through a pipe with a diameter of 25 cm and a length of 30 m. The total multiple local loss coefficient in the pipe is given as 4.4. The friction factor of the pipe was obtained from the Moody chart as 0.03. What is the total head loss in this pipe?arrow_forward
- A garden hose attached with a nozzle is used to fill a 20 Liters bucket. The inner diameter of the hose is d =8 cm, and it reduces to d = 5.17 cm at %3D hose the nozzle exit. If it takes 50 seconds to fill the bucket with water, determine average velocity (m/s) nozzle of water at the nozzle exit. Nozzle Garden Bucket hosearrow_forwardReservolr 40 m Pump- turbine Lake FIGURE P3-86 3-87 The pump of a water distribution system is powered by a 15-kW electric motor whose efficiency is 90 percent. The water flow rate through the pump is 50 Lis. The diameters of the inlet and outlet pipes are the same, and the elevation difference across the pump is negligible. If the pres- sures at the inlet and outlet of the pump are measured to be 100 kPa and 300 kPa (absolute), respectively, determine the mechanical efficiency of the pump. Answer: 74.1 percentarrow_forwardA water initially contains 140 L of water. Now equal rates of cold and hot water enter the tank for a period of 30 minutes while warm water is discharged from the tank at a rate of 25 L/min. The amount of water in the tank at the end of 30 min period is 50 L. The rate of hot water entering the tabk in L/min is (WITH FREE BODY DIAGRAM) CHOICES: A.7 B.5 C.11 D.25arrow_forward
- A garden hose attached with a nozzle is used to fill a 20 Liters bucket. The inner diameter of the hose is d %3D8 cm, and it reduces tod = 5.16 cm at the nozzle exit. If it takes 50 seconds to fill the bucket with hose nozzle water, determine average velocity (m/s) of water at the nozzle exit. Nozzle Garden Bucket hosearrow_forward5-95 Air flows through a pipe at a rate of 200 L/s. The pipe consists of two sections of diameters 20 cm and 10 cm with a smooth reducing section that connects them. The pressure difference between the two pipe sections is measured by a water manometer. Neglecting frictional effects, determine the differential height of water between the two pipe sections. Take the air density to be 1.20 kg/m?. Air 200 Ls 20 cm | 10 cm·arrow_forwardA fan is installed in a residential building to provide proper ventilation. This fan isconnected to a duct with 11.6 cm diameter and provides the average air velocity of 5m/s. By regulation, the minimum fresh air requirement is specified to be 0.35 airchanges per hour (ACH) which means 35% of the entire air contained in a room shouldbe replaced by fresh outdoor air every hour. Determine the flow capacity of the fan in litres/min and what the height of the residential building should be.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Intro to Compressible Flows — Lesson 1; Author: Ansys Learning;https://www.youtube.com/watch?v=OgR6j8TzA5Y;License: Standard Youtube License