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Referring to figure 37.90, a rectangular duct with cross sectional measurements of 20 inch × 11 inch will be the equivalent of a round duct with diameter of.

Referring to figure 37.90, a rectangular duct with cross sectional measurements of 20 inch × 11 inch will be the equivalent of a round duct with diameter of.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Section: Chapter Questions
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1. Referring to figure 37.90, a rectangular duct with cross sectional measurements of 20 inch × 11 inch will be the equivalent of a round duct with diameter of.

67899 30 O size the must understand he of pressure drop in and pipe. The pressure drop in duct is and read on the fric- g and Engineers, Inc. Unit 37 Air Distribution and Balance 1123 and Sng Length of One Side of Rectangular Duct (a). in. 9 PV 6.6 6 8 10 11 12 13 14 15 17 18 7 7.1 7.7 8 7.6 8.2 8.7 9 8.0 8.7 9.3 9.8 10 8.4 9.1 9.8 10.4 10.9 1- 20 Adj. 22 24 28 11 8.8 9.5 10.2 10.9 11.5 12.0 12 9.1 9.9 10.7 11.3 12.0 12.6 13.1 9.5 10.3 11.1 11.8 12.4 13.1 13.7 9.8 10.7 11.5 12.2 12.9 13.5 14.2 14.7 15. 10.1 11.0 11.8 12.6 13.3 14.0 14.6 15.3 15.8 16.4 10 11 12 13 14 16. 10.4 11.3 12.2 13.0 13.7 14.4 15.1 15.7 16.4 16.9 17.5 10.7 11.6 12.5 13.4 14.1 14.9 15.6 16.2 16.8 17.4 18.0 18.6 18. 11.0 11.9 12.9 13.7 14.5 15.3 16.0 16.7 17.3 17.9 18.5 19.1 19.7 19 11.2 12.2 13.2 14.1 14.9 15.7 16.4 17.1 17.8 18.4 19.0 19.6 20.2 20.8 20 11.5 12.5 13.5 14.4 15.2 16.0 16.8 17.5 18.2 18.9 19.5 20.1 20.7 21.3 21.9 15 17 22 12.0 13.0 14.1 15.0 15.9 16.8 17.6 18.3 19.1 19.8 20.4 21.1 21.7 22.3 22.9 24.0 24 12.4 13.5 14.6 15.6 16.5 17.4 18.3 19.1 19.9 20.6 21.3 22.0 22.7 23.3 23.9 25.1 26.2 26 12.8 14.0 15.1 16.2 17.1 18.1 19.0 19.8 20.6 21.4 22.1 22.9 23.5 24.2 24.9 26.1 27.3 28.4 28 13.2 14.5 15.6 16.7 17.7 18.7 19.6 20.5 21.3 22.1 22.9 23.7 24.4 25.1 25.8 27.1 28.3 29.5 30.6 30 13.6 14.9 16.1 17.2 18.3 19.3 20.2 21.1 22.0 22.9 23.7 24.4 25.2 25.9 26.6 28.0 29.3 30.5 31.7 32.8 32 14.0 15.3 16.5 17.7 18.8 19.8 20.8 21.8 22.7 23.5 24.4 25.2 26.0 26.7 27.5 28.9 30.2 31.5 32.7 33.9 34 14.4 15.7 17.0 18.2 19.3 20.4 21.4 22.4 23.3 24.2 25.1 25.9 26.7 27.5 28.3 29.7 31.0 32.4 33.7 34.9 36 14.7 16.1 17.4 18.6 19.8 20.9 21.9 22.9 23.9 24.8 25.7 26.6 27.4 28.2 29.0 30.5 32.0 33.3 34.6 35.9 38 15.0 16.5 17.8 19.0 20.2 21.4 22.4 23.5 24.5 25.4 26.4 27.2 28.1 28.9 29.8 31.3 32.8 34.2 35.6 36.8 40 15.3 16.8 18.2 19.5 20.7 21.8 22.9 24.0 25.0 26.0 27.0 27.9 28.8 29.6 30.5 32.1 33.6 35.1 36.4 37.8 40 42 15.6 17.1 18.5 19.9 21.1 22.3 23.4 24.5 25.6 26.6 27.6 28.5 29.4 30.3 31.2 32.8 34.4 35.9 37.3 38.7 44 15.9 17.5 18.9 20.3 21.5 22.7 23.9 25.0 26.1 27.1 28.1 29.1 30.0 30.9 31.8 33.5 35.1 36.7 38.1 39.5 46 16.2 17.8 19.3 20.6 21.9 23.2 24.4 25.5 26.6 27.7 28.7 29.7 30.6 31.6 32.5 34.2 35.9 37.4 38.9 40.4 48 16.5 18.1 19.6 21.0 22.3 23.6 24.8 26.0 27.1 28.2 29.2 30.2 31.2 32.2 33.1 34.9 36.6 38.2 39.7 41.2 50 16.8 18.4 19.9 21.4 22.7 24.0 25.2 26.4 27.6 28.7 29.8 30.8 31.8 32.8 33.7 35.5 37.2 38.9 40.5 42.0 50 44 46 52 17.1 18.7 20.2 21.7 23.1 24.4 25.7 26.9 28.0 29.2 30.3 31.3 32.3 33.3 34.3 36.2 37.9 39.6 41.2 42.8 52 54 17.3 19.0 20.6 22.0 23.5 24.8 26.1 27.3 28.5 29.7 30.8 31.8 32.9 33.9 34.9 36.8 38.6 40.3 41.9 43.5 54 56 17.6 19.3 20.9 22.4 23.8 25.2 26.5 27.7 28.9 30.1 31.2 32.3 33.4 34.4 35.4 37.4 39.2 41.0 42.7 44.3 56 58 17.8 19.5 21.2 22.7 24.2 25.5 26.9 28.2 29.4 30.6 31.7 32.8 33.9 35.0 36.0 38.0 39.8 41.6 43.3 45.0 58 60 18.1 19.8 21.5 23.0 24.5 25.9 27.3 28.6 29.8 31.0 32.2 33.3 34.4 35.5 36.5 38.5 40.4 42.3 44.0 45.7 09 20.1 21.7 23.3 24.8 26.3 27.6 28.9 30.2 31.5 32.6 33.8 34.9 36.0 37.1 39.1 41.0 42.9 44.7 46.4 20.3 22.0 23.6 25.1 26.6 28.0 29.3 30.6 31.9 33.1 34.3 35.4 36.5 37.6 39.6 41.6 43.5 45.3 47.1 20.6 22.3 23.9 25.5 26.9 28.4 29.7 31.0 32.3 33.5 34.7 35.9 37.0 38.1 40.2 42.2 44.1 46.0 47.7 20.8 22.6 24.2 25.8 27.3 28.7 30.1 31.4 32.7 33.9 35.2 36.3 37.5 38.6 40.7 42.8 44.7 46.6 48.4 21.1 22.8 24.5 26.1 27.6 29.1 30.4 31.8 33.1 34.4 35.6 36.8 37.9 39.1 41.2 43.3 45.3 47.2 49.0 62 64 64 99 99 89 23.1 24.8 26.4 27.9 29.4 30.8 32.2 33.5 34.8 36.0 37.2 38.4 39.5 41.7 43.8 45.8 47.8 49.6 23.3 25.1 26.7 28.2 29.7 31.2 32.5 33.9 35.2 36.4 37.7 38.8 40.0 42.2 44.4 46.4 48.4 50.3 24 23.6 25.3 27.0 28.5 30.0 31.5 32.9 34.3 35.6 36.8 38.1 39.3 40.5 42.7 44.9 47.0 48.9 50.9 76 23.8 25.6 27.3 28.8 30.4 31.8 33.3 34.6 36.0 37.2 38.5 39.7 40.9 43.2 45.4 47.5 49.5 51.4 78 24.1 25.8 27.5 29.1 30.7 32.2 33.6 35.0 36.3 37.6 38.9 40.2 41.4 43.7 45.9 48.0 50.1 52.0 74 78 26.1 27.8 29.4 31.0 32.5 34.0 35.4 36.7 38.0 39.3 40.6 41.8 44.1 46.4 48.5 50.6 52.6 26.4 28.1 29.7 31.3 32.8 34.3 35.7 37.1 38.4 39.7 41.0 42.2 44.6 46.9 49.0 51.1 53.2 26.6 28.3 30.0 31.6 33.1 34.6 36.1 37.4 38.8 40.1 41.4 42.6 45.0 47.3 49.6 51.7 53.7 6 269 28.6 30.3 31.9 33.4 34.9 36.4 37.8 39.2 40.5 41.8 43.1 45.5 47.8 50.0 52.2 54.3 27.1 28.9 30.6 32.2 33.8 35.3 36.7 38.2 39.5 40.9 42.2 43.5 45.9 48.3 50.5 52.7 548 82 84 Ocated ely to 98 88 96 29.1 30.8 32.5 34.1 35.6 37.1 38.5 39.9 41.3 42.6 43.9 46.4 48.7 51.0 53.2 55 3 0 20.6 31.4 33.0 34.7 36.2 37.7 39.2 40.6 42.0 43.3 44.7 47.2 49.6 52.0 54.2 564 06 92 96 ystem fittings are calculated in a different manner. Pressure drop across different types of fittings in in. WC has been deter- mined by laboratory experiment and is known. This pressure drop has been converted to equivalent feet of duct for the convenience of the designer and technician. The technician 10 er Buupu 10 size duct properly, the technician must understand only 22IS OF None drop in duct is calculated and read on the fric- RUDalart in feet of duct, from the air handler to the ter- utlet. This is a straightforward measurement. The
Transcribed Image Text:67899 30 O size the must understand he of pressure drop in and pipe. The pressure drop in duct is and read on the fric- g and Engineers, Inc. Unit 37 Air Distribution and Balance 1123 and Sng Length of One Side of Rectangular Duct (a). in. 9 PV 6.6 6 8 10 11 12 13 14 15 17 18 7 7.1 7.7 8 7.6 8.2 8.7 9 8.0 8.7 9.3 9.8 10 8.4 9.1 9.8 10.4 10.9 1- 20 Adj. 22 24 28 11 8.8 9.5 10.2 10.9 11.5 12.0 12 9.1 9.9 10.7 11.3 12.0 12.6 13.1 9.5 10.3 11.1 11.8 12.4 13.1 13.7 9.8 10.7 11.5 12.2 12.9 13.5 14.2 14.7 15. 10.1 11.0 11.8 12.6 13.3 14.0 14.6 15.3 15.8 16.4 10 11 12 13 14 16. 10.4 11.3 12.2 13.0 13.7 14.4 15.1 15.7 16.4 16.9 17.5 10.7 11.6 12.5 13.4 14.1 14.9 15.6 16.2 16.8 17.4 18.0 18.6 18. 11.0 11.9 12.9 13.7 14.5 15.3 16.0 16.7 17.3 17.9 18.5 19.1 19.7 19 11.2 12.2 13.2 14.1 14.9 15.7 16.4 17.1 17.8 18.4 19.0 19.6 20.2 20.8 20 11.5 12.5 13.5 14.4 15.2 16.0 16.8 17.5 18.2 18.9 19.5 20.1 20.7 21.3 21.9 15 17 22 12.0 13.0 14.1 15.0 15.9 16.8 17.6 18.3 19.1 19.8 20.4 21.1 21.7 22.3 22.9 24.0 24 12.4 13.5 14.6 15.6 16.5 17.4 18.3 19.1 19.9 20.6 21.3 22.0 22.7 23.3 23.9 25.1 26.2 26 12.8 14.0 15.1 16.2 17.1 18.1 19.0 19.8 20.6 21.4 22.1 22.9 23.5 24.2 24.9 26.1 27.3 28.4 28 13.2 14.5 15.6 16.7 17.7 18.7 19.6 20.5 21.3 22.1 22.9 23.7 24.4 25.1 25.8 27.1 28.3 29.5 30.6 30 13.6 14.9 16.1 17.2 18.3 19.3 20.2 21.1 22.0 22.9 23.7 24.4 25.2 25.9 26.6 28.0 29.3 30.5 31.7 32.8 32 14.0 15.3 16.5 17.7 18.8 19.8 20.8 21.8 22.7 23.5 24.4 25.2 26.0 26.7 27.5 28.9 30.2 31.5 32.7 33.9 34 14.4 15.7 17.0 18.2 19.3 20.4 21.4 22.4 23.3 24.2 25.1 25.9 26.7 27.5 28.3 29.7 31.0 32.4 33.7 34.9 36 14.7 16.1 17.4 18.6 19.8 20.9 21.9 22.9 23.9 24.8 25.7 26.6 27.4 28.2 29.0 30.5 32.0 33.3 34.6 35.9 38 15.0 16.5 17.8 19.0 20.2 21.4 22.4 23.5 24.5 25.4 26.4 27.2 28.1 28.9 29.8 31.3 32.8 34.2 35.6 36.8 40 15.3 16.8 18.2 19.5 20.7 21.8 22.9 24.0 25.0 26.0 27.0 27.9 28.8 29.6 30.5 32.1 33.6 35.1 36.4 37.8 40 42 15.6 17.1 18.5 19.9 21.1 22.3 23.4 24.5 25.6 26.6 27.6 28.5 29.4 30.3 31.2 32.8 34.4 35.9 37.3 38.7 44 15.9 17.5 18.9 20.3 21.5 22.7 23.9 25.0 26.1 27.1 28.1 29.1 30.0 30.9 31.8 33.5 35.1 36.7 38.1 39.5 46 16.2 17.8 19.3 20.6 21.9 23.2 24.4 25.5 26.6 27.7 28.7 29.7 30.6 31.6 32.5 34.2 35.9 37.4 38.9 40.4 48 16.5 18.1 19.6 21.0 22.3 23.6 24.8 26.0 27.1 28.2 29.2 30.2 31.2 32.2 33.1 34.9 36.6 38.2 39.7 41.2 50 16.8 18.4 19.9 21.4 22.7 24.0 25.2 26.4 27.6 28.7 29.8 30.8 31.8 32.8 33.7 35.5 37.2 38.9 40.5 42.0 50 44 46 52 17.1 18.7 20.2 21.7 23.1 24.4 25.7 26.9 28.0 29.2 30.3 31.3 32.3 33.3 34.3 36.2 37.9 39.6 41.2 42.8 52 54 17.3 19.0 20.6 22.0 23.5 24.8 26.1 27.3 28.5 29.7 30.8 31.8 32.9 33.9 34.9 36.8 38.6 40.3 41.9 43.5 54 56 17.6 19.3 20.9 22.4 23.8 25.2 26.5 27.7 28.9 30.1 31.2 32.3 33.4 34.4 35.4 37.4 39.2 41.0 42.7 44.3 56 58 17.8 19.5 21.2 22.7 24.2 25.5 26.9 28.2 29.4 30.6 31.7 32.8 33.9 35.0 36.0 38.0 39.8 41.6 43.3 45.0 58 60 18.1 19.8 21.5 23.0 24.5 25.9 27.3 28.6 29.8 31.0 32.2 33.3 34.4 35.5 36.5 38.5 40.4 42.3 44.0 45.7 09 20.1 21.7 23.3 24.8 26.3 27.6 28.9 30.2 31.5 32.6 33.8 34.9 36.0 37.1 39.1 41.0 42.9 44.7 46.4 20.3 22.0 23.6 25.1 26.6 28.0 29.3 30.6 31.9 33.1 34.3 35.4 36.5 37.6 39.6 41.6 43.5 45.3 47.1 20.6 22.3 23.9 25.5 26.9 28.4 29.7 31.0 32.3 33.5 34.7 35.9 37.0 38.1 40.2 42.2 44.1 46.0 47.7 20.8 22.6 24.2 25.8 27.3 28.7 30.1 31.4 32.7 33.9 35.2 36.3 37.5 38.6 40.7 42.8 44.7 46.6 48.4 21.1 22.8 24.5 26.1 27.6 29.1 30.4 31.8 33.1 34.4 35.6 36.8 37.9 39.1 41.2 43.3 45.3 47.2 49.0 62 64 64 99 99 89 23.1 24.8 26.4 27.9 29.4 30.8 32.2 33.5 34.8 36.0 37.2 38.4 39.5 41.7 43.8 45.8 47.8 49.6 23.3 25.1 26.7 28.2 29.7 31.2 32.5 33.9 35.2 36.4 37.7 38.8 40.0 42.2 44.4 46.4 48.4 50.3 24 23.6 25.3 27.0 28.5 30.0 31.5 32.9 34.3 35.6 36.8 38.1 39.3 40.5 42.7 44.9 47.0 48.9 50.9 76 23.8 25.6 27.3 28.8 30.4 31.8 33.3 34.6 36.0 37.2 38.5 39.7 40.9 43.2 45.4 47.5 49.5 51.4 78 24.1 25.8 27.5 29.1 30.7 32.2 33.6 35.0 36.3 37.6 38.9 40.2 41.4 43.7 45.9 48.0 50.1 52.0 74 78 26.1 27.8 29.4 31.0 32.5 34.0 35.4 36.7 38.0 39.3 40.6 41.8 44.1 46.4 48.5 50.6 52.6 26.4 28.1 29.7 31.3 32.8 34.3 35.7 37.1 38.4 39.7 41.0 42.2 44.6 46.9 49.0 51.1 53.2 26.6 28.3 30.0 31.6 33.1 34.6 36.1 37.4 38.8 40.1 41.4 42.6 45.0 47.3 49.6 51.7 53.7 6 269 28.6 30.3 31.9 33.4 34.9 36.4 37.8 39.2 40.5 41.8 43.1 45.5 47.8 50.0 52.2 54.3 27.1 28.9 30.6 32.2 33.8 35.3 36.7 38.2 39.5 40.9 42.2 43.5 45.9 48.3 50.5 52.7 548 82 84 Ocated ely to 98 88 96 29.1 30.8 32.5 34.1 35.6 37.1 38.5 39.9 41.3 42.6 43.9 46.4 48.7 51.0 53.2 55 3 0 20.6 31.4 33.0 34.7 36.2 37.7 39.2 40.6 42.0 43.3 44.7 47.2 49.6 52.0 54.2 564 06 92 96 ystem fittings are calculated in a different manner. Pressure drop across different types of fittings in in. WC has been deter- mined by laboratory experiment and is known. This pressure drop has been converted to equivalent feet of duct for the convenience of the designer and technician. The technician 10 er Buupu 10 size duct properly, the technician must understand only 22IS OF None drop in duct is calculated and read on the fric- RUDalart in feet of duct, from the air handler to the ter- utlet. This is a straightforward measurement. The
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