A rectangular sheet-metal duct is 200 ft long and has a fi xed height H 5 6 in. The
Chapter 6, Problem p6.90(choose chapter or problem)
A rectangular sheet-metal duct is 200 ft long and has a fi xed height H 5 6 in. The width B, however, may vary from 6 to 36 in. A blower provides a pressure drop of 80 Pa of air at 208C and 1 atm. What is the optimum width B that will provide the most airfl ow in ft3 /s?
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