The following figure shows a typical duct layout. Design the duct system using a) Velocity method,...

 

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The following figure shows a typical duct layout. Design the duct system using a) Velocity method, and b) Equal friction method. Take the velocity of air in 2 m/s 1 m/s 3 2 D F 6 m 15 m 12 m- 18 C 6 m Fan 1 m/s 1 the main duct (A) as 8 m/s for both the methods. Assume a dynamic loss coefficient of 0.3 for upstream to downstream and 0.8 for upstream to branch and for the elbow. The dynamic loss coefficients for the outlets may be taken as 1.0. Find the FTP required for each case and the amount of dampering required. The following figure shows a typical duct layout. Design the duct system using a) Velocity method, and b) Equal friction method. Take the velocity of air in 2 m/s 1 m/s 3 2 D F 6 m 15 m 12 m- 18 C 6 m Fan 1 m/s 1 the main duct (A) as 8 m/s for both the methods. Assume a dynamic loss coefficient of 0.3 for upstream to downstream and 0.8 for upstream to branch and for the elbow. The dynamic loss coefficients for the outlets may be taken as 1.0. Find the FTP required for each case and the amount of dampering required.

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