EX9) For the system illustrated, size the ductwork by the equal friction method. Determine the system resistance and total pressure unbalance at the junctions. The airflow quantities are actual values adjusted for heat gains or losses, and ductwork is sealed (assume no leakage), galvanized steel ducts with transverse joints on 1200 mm centers (ɛ = 0.09 mm). Air is at 1.204 kg/m³ density. The supply system is constructed of rectangular ductwork; the return system, round ductwork 275 lit/s 275 lit/s 1.5 m 32m 14 13 2.5m 475 lit/s 2.3m 1.15 m 1225 lit/s 12 1.35m 32m 3.7m 1.5 m 200 lit/s 15m
EX9) For the system illustrated, size the ductwork by the equal friction method. Determine the system resistance and total pressure unbalance at the junctions. The airflow quantities are actual values adjusted for heat gains or losses, and ductwork is sealed (assume no leakage), galvanized steel ducts with transverse joints on 1200 mm centers (ɛ = 0.09 mm). Air is at 1.204 kg/m³ density. The supply system is constructed of rectangular ductwork; the return system, round ductwork 275 lit/s 275 lit/s 1.5 m 32m 14 13 2.5m 475 lit/s 2.3m 1.15 m 1225 lit/s 12 1.35m 32m 3.7m 1.5 m 200 lit/s 15m
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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