ENGINEERING FUNDAMENTALS
6th Edition
ISBN: 9781337705011
Author: MOAVENI
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Question
Chapter 9, Problem 41P
To determine
Calculate the mass-flow rate of air and the average air speed in the duct.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Air enters this square duct at section 1 with the velocity distribution as shown. Note that the velocity varies in the y direction only ( for a given value of y, the velocity is the same for all values of z).
What is the volume rate of flow?
What is the mean velocity in the duct?
What is the mass rate of flow if the mass density of the air is 1.2 kg/m cube?
Air enters this square duct at section 1 with the velocity distribution as shown. Note that the velocity varies in the y
direction only ( for a given value of y, the velocity is the same for all values of z).
What is the volume rate of flow?
What is the mean velocity in the duct?
What is the mass rate of flow if the mass density of the air is 1.2 kg/m cube?
10m/s
0.5 m
1,0m
0.5 m
End view
Elevation vieW
A rectangular duct with dimensions of 12 in. × 14 in. delivers conditioned air with a density of 1.2 kg/m3 to a room at a rate of 1000 ft3/min. What is the mass-flow rate of air in lbm/h? What is the average air speed in the duct? Express your answer in m/s and ft/s.
Chapter 9 Solutions
ENGINEERING FUNDAMENTALS
Ch. 9.3 - Prob. 1BYGCh. 9.3 - Prob. 2BYGCh. 9.3 - Prob. 3BYGCh. 9.3 - Prob. BYGVCh. 9.6 - Prob. 1BYGCh. 9.6 - Prob. 2BYGCh. 9.6 - Prob. 3BYGCh. 9.6 - Prob. BYGVCh. 9 - Prob. 1PCh. 9 - Prob. 2P
Ch. 9 - Determine the specific gravity of the following...Ch. 9 - Prob. 4PCh. 9 - Prob. 5PCh. 9 - Prob. 9PCh. 9 - Prob. 10PCh. 9 - Prob. 12PCh. 9 - Prob. 13PCh. 9 - Prob. 14PCh. 9 - Prob. 17PCh. 9 - Prob. 19PCh. 9 - Prob. 22PCh. 9 - Prob. 24PCh. 9 - Prob. 25PCh. 9 - Prob. 26PCh. 9 - Prob. 27PCh. 9 - Prob. 28PCh. 9 - Prob. 29PCh. 9 - Prob. 30PCh. 9 - Prob. 31PCh. 9 - Prob. 32PCh. 9 - Prob. 33PCh. 9 - Prob. 34PCh. 9 - Prob. 35PCh. 9 - A plugged dishwasher sink with the dimensions of...Ch. 9 - Prob. 37PCh. 9 - Prob. 38PCh. 9 - Prob. 39PCh. 9 - Prob. 40PCh. 9 - Prob. 41PCh. 9 - Prob. 42PCh. 9 - Prob. 43PCh. 9 - Lake Mead, near the Hoover Dam, which is the...Ch. 9 - Prob. 45PCh. 9 - Prob. 46PCh. 9 - Prob. 47PCh. 9 - Prob. 48PCh. 9 - Prob. 49PCh. 9 - Prob. 51P
Knowledge Booster
Similar questions
- A rectangular duct with dimensions of 1 m × 110 cm delivers conditioned air with a density of 1.2 kg⁄m3 to a room at a rate of 45 m3 /min. What is the mass-flow rate of air? What is the average air speed in the duct?arrow_forwardIn a food processing (drying) application, air ( ρ = 1.10 kg⁄m3 , V = 3 m⁄min ) enters a chamber through a duct with dimensions of 500 mm × 450 mm and leaves (ρ = 1.10 kg⁄m3 ) through a ductwork with dimensions of 400 mm × 450 mm. What is the average air speed in the exit duct? Express your answer in m/s.arrow_forwardGas flows at a steady rate in a 100-mm diameter pipe that enlarges to a 150- mm diameter pipe. At a certain section of the 100-mm pipe the density of the gas is 200 kg/m³ and the velocity is 20 m/s. At a certain section of the 150- mm pipe the velocity is 14 m/s. Which nearly gives the weight flow rate in N/s in the pipe? O a. 412.5 N/s O b. 125.7 N/s 331.1 N/s O d. 308.2 N/sarrow_forward
- Calculate the height of a skyscraper, if the barometric pressure at the finish ground level is 725 mm of Hg, and at the topmost floor is 755 mm of Hg. Take average air density = 1kg/m³. A 150 m B 200 m C 325 m D 408 marrow_forwardPROBLEM 1 The flow rate of air moving through a square 0.50-m by 0.50-m duct is 160 m/min. (a) What is the velocity (m/s) of the air? If the duct is changed to a pipe with diameter equal to 0.5 m, (b) what is the velocity (m/s) for the same flow rate? (c) Which has faster velocity of flow? Square duct or pipe?arrow_forwardA person is donating blood. The pint bag in which the blood is collected is initially flat and is at atmospheric pressure. Neglect the initial mass of air in the 1/8-in. I.D., 4-ft-long plastic tube carrying blood to the bag. The average blood pressure in the vein is 40 mm Hg above atmospheric pressure. Estimate the time required for the person to donate one pint of blood. Assume that blood has a specific gravity of 1.06 and a viscosity of 1.0 × 10-4 lb-s/ft². The needle's I.D. is 1/16 in. and the needle length is 2.0 in. The bag is 1.7 ft below the needle inlet and the vein's I.D. is 1/8 in. t = 9.35 minarrow_forward
- The flow rate of air moving through a square 0.50-m by 0.50-m duct is 160 m³/min. (a) What is the velocity (m/s) of the air? If the duct is changed to a pipe with diameter equal to 0.5 m, (b) what is the velocity (m/s) for the same flow rate? (c) Which has faster velocity of flow? Square duct or pipe?arrow_forwardCalculate the mass flow rate of air in g/min.arrow_forwardA room has a volume of 120 ?3. An air-conditioning system is to replace the air in this room every twenty minutes, using ducts that have a square cross section. Assuming that air can be treated as an incompressible fluid, find the length of a side of the square if the air speed within the ducts is:a) 3.0 m/s and b) 5.0 m/s.arrow_forward
- Air flows into this room at the rate of 71 cu ft/min. How many minutes will ittake to change the air in this room?arrow_forwardConsider the duct system shown in the accompanying figure. The air flows from the 8"x12" duct into a 4"x6" duct steadily. The average speed of the air in the 4"x6" duct is 30 ft/s. What is the volume flow rate of air in the 8"x12" duct? Express the volume flow rate in ft3/s, ft3/min, and m3/s. What is the average speed of air in the 8"x12" duct? 4" x 6" V2 8" x 12" V1 Cross-sectional Area of 4"x6" = 24 in? %3D Cross-sectional Area of 8"x12" = 96 in? %3D V2 = 30 ft/s Recall: Q (Flow rate) = (ave. speed) (cross-sectional area)arrow_forwardThere is a pipe section with a 16 inch diameter and a pipe section with a 12 inch diameter. The flow rate through both pipes is 13 cubic feet per second. The velocity in the 16 inch pipe is 2 feet per second. What is the velocity in the 12 inch pipe?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Engineering Fundamentals: An Introduction to Engi...Civil EngineeringISBN:9781305084766Author:Saeed MoaveniPublisher:Cengage Learning
Engineering Fundamentals: An Introduction to Engi...
Civil Engineering
ISBN:9781305084766
Author:Saeed Moaveni
Publisher:Cengage Learning