![Engineering Fundamentals: An Introduction to Engineering](https://www.bartleby.com/isbn_cover_images/9780357112311/9780357112311_largeCoverImage.gif)
Engineering Fundamentals: An Introduction to Engineering
6th Edition
ISBN: 9780357112311
Author: Saeed Moaveni
Publisher: Cengage Learning US
expand_more
expand_more
format_list_bulleted
Question
Chapter 8, Problem 34P
To determine
Find the size of a circular duct if average air velocity inside the duct is to remain the same.
Expert Solution & Answer
![Check Mark](/static/check-mark.png)
Want to see the full answer?
Check out a sample textbook solution![Blurred answer](/static/blurred-answer.jpg)
Students have asked these 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?
A rectangular duct with dimensions of 30 cm×35 cm delivers conditioned air to a room at a rate of 30 m3⁄min . What should be the size of a circular duct if the average air velocity inside the duct is to remain the same?
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 8 Solutions
Engineering Fundamentals: An Introduction to Engineering
Ch. 8.2 - Prob. 1BYGCh. 8.2 - Prob. 2BYGCh. 8.2 - Prob. 3BYGCh. 8.2 - Prob. 4BYGCh. 8.2 - Prob. BYGVCh. 8.4 - Prob. 1BYGCh. 8.4 - Prob. 2BYGCh. 8.4 - Prob. 3BYGCh. 8.4 - Prob. BYGVCh. 8.5 - Prob. 1BYG
Ch. 8.5 - Prob. 2BYGCh. 8.5 - Prob. 3BYGCh. 8.5 - Prob. 4BYGCh. 8.5 - Prob. BYGVCh. 8 - Prob. 1PCh. 8 - Prob. 3PCh. 8 - Prob. 4PCh. 8 - Prob. 9PCh. 8 - Prob. 10PCh. 8 - Prob. 11PCh. 8 - Prob. 12PCh. 8 - Prob. 13PCh. 8 - Prob. 14PCh. 8 - Prob. 15PCh. 8 - Prob. 17PCh. 8 - Prob. 18PCh. 8 - Prob. 19PCh. 8 - Prob. 20PCh. 8 - Prob. 21PCh. 8 - Prob. 22PCh. 8 - Prob. 23PCh. 8 - Prob. 24PCh. 8 - Prob. 25PCh. 8 - Prob. 26PCh. 8 - Prob. 27PCh. 8 - Prob. 28PCh. 8 - Prob. 29PCh. 8 - Prob. 30PCh. 8 - Prob. 31PCh. 8 - Prob. 32PCh. 8 - Prob. 33PCh. 8 - Prob. 34PCh. 8 - Prob. 35PCh. 8 - Prob. 36PCh. 8 - Prob. 37PCh. 8 - Prob. 38PCh. 8 - Prob. 39PCh. 8 - Prob. 40PCh. 8 - Prob. 41PCh. 8 - Prob. 42PCh. 8 - Prob. 43PCh. 8 - Prob. 44PCh. 8 - Prob. 45PCh. 8 - Prob. 46PCh. 8 - Prob. 47PCh. 8 - Prob. 48PCh. 8 - Prob. 49PCh. 8 - Prob. 50PCh. 8 - Prob. 51PCh. 8 - Prob. 52PCh. 8 - Prob. 53PCh. 8 - Prob. 54PCh. 8 - Prob. 55PCh. 8 - Prob. 56PCh. 8 - Prob. 57PCh. 8 - Prob. 58PCh. 8 - Prob. 59P
Knowledge Booster
Similar questions
- PROBLEM 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_forwardAir 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 vieWarrow_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
- 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_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_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_forward
- Watch a video about Airflow Visualization. Answer the following How does the air behaves at zero degree?When is the flow turbulent? When does the boundary layer disappear?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_forwardAir 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_forward
- Consider 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_forwardAn unspecified fluid flows in a stream with a pitot tube attached for measurement of velocity. The fluid rises by 57mm above the surface of the open channel. If the fluid has a specific gravity of 0.81, how fast in the flow in the stream? Express your answer in kph.arrow_forwardAn office building with three air-conditioning units has an air-conditioningload of 121,000 Btu/hr. The first unit handles 41,000 Btu/hr, and the secondhandles 42,000 Btu/hr. How many Btu/hr does the third unit handle?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
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305084766/9781305084766_smallCoverImage.gif)
Engineering Fundamentals: An Introduction to Engi...
Civil Engineering
ISBN:9781305084766
Author:Saeed Moaveni
Publisher:Cengage Learning