 Industrial Ventilation Physics Chapter 7 Exercise Questions Help Anonymous
account_balance_wallet \$19.99

Question Description

7 question and i attached ch7 doct

Also i attached ch7 pdf

Unformatted Attachment Preview

Industrial Ventilation (Chapter 7) 1. The circumference of a round duct is about 37.5 inches. The average velocity pressure (VP) of air flowing in the duct is 0.30 inch w.g. at standard conditions (STP). Please calculate: a) Duct diameter b) Average Vduct c) Air flowrate Q, and compare your Q with that on Chart 5 to determine the difference. 2. The average air velocity pressure (VP) of an airstream in a duct is 0.90 inch w.g. The temperature of the air is T = 75 ℉ and the duct is located 1,000 ft above sea level. What is the actual average air velocity? Hint: you need find B.P. online for df calculation. 3. Standard air (d=1) moves through a galvanized duct system at the velocity (Vaverage) of 5,000 fpm and Dduct is 8 inches. • List the three equations that you use to solve the problem. • Please estimate VP • Please find the loss factors K from the Charts, and then estimate static pressure loss for each component in each branch (a-f). • Please calculate the friction loss for the entire duct system, La-f = 50’, galv duct 1 Component a. Flanged hood (round) b. Plain duct hood (round) c. Elbow, 3-piece, R/D=1.5, 90° d. Elbow, 5-piece, R/D=1.0, 90° e. Elbow, 4-piece, R/D=2.0, 45° f. Branch entry, 60° included angle Friction loss (FL), La-f = 50’, galv duct K or Fh Where can you find the K value? Chart 11A Chart 11A Chart 5 SP loss (“w.g.) FL = 4. Discuss how you can use blast gate method to balance the SP between branches. You can give an example and/or use diagram. 5. A ventilation system has two branches: one branch requires to have SP of – 5.3” w.g. and Q of 4.8 scfm, and the other needs -6.1 “w.g and 5.2 scfm. 1) Determine the governing static pressure for a ventilation system; and 2) Determine the Qcorrect and specify whether the Qcorrect you calculate is for governing or for non-governing branch. 6. There are several limitations when using blast gate method. Please pick one limitation of your interest, and discuss what method(s) YOU can use to solve the potential problem. 2 7. A ventilation system with two branches: one branch requires to have SP of – 5” w.g. and Q of 4.8 scfm. Determine the maximum range of SP for another branch that allow you to determine the governing static pressure without a further design change needed. 3 ...
Purchase answer to see full attachment

Kevins_Jr
School: University of Virginia   At...

flag Report DMCA  Review Anonymous
awesome work thanks Brown University

1271 Tutors California Institute of Technology

2131 Tutors Carnegie Mellon University

982 Tutors Columbia University

1256 Tutors Dartmouth University

2113 Tutors Emory University

2279 Tutors Harvard University

599 Tutors Massachusetts Institute of Technology

2319 Tutors New York University

1645 Tutors Notre Dam University

1911 Tutors Oklahoma University

2122 Tutors Pennsylvania State University

932 Tutors Princeton University

1211 Tutors Stanford University

983 Tutors University of California

1282 Tutors Oxford University

123 Tutors Yale University

2325 Tutors