Fans – Lecture 2 Fan testing: Dr. C. L. Jones Biosystems and Ag. Engineering

Axial flow fans propeller fan tube-axial fan vane-axial fan Dr. C. L. Jones Biosystems and Ag. Engineering

Radial flow fans centrifugal Sukup literature Dr. C. L. Jones Biosystems and Ag. Engineering

cross-flow (tangential) fans Dr. C. L. Jones Biosystems and Ag. Engineering

mixed-flow tubular cent. fans Dr. C. L. Jones Biosystems and Ag. Engineering

Fan Curves AMCA Handout Dr. C. L. Jones Biosystems and Ag. Engineering

Total pressure, total efficiency, static efficiency Total Pressure: eqn. 5.1, pg 127 Find v: eqn. 5.2 Conversions: 1 “H2O = 249 Pa 1 ft/min = .00508 m/sec 1 lb/in^3 = 27679.9 kg/m^3 1 ft^3/min = .000471947 m^3/sec 1 HP = 745.7 Watts Total efficiency eqn. 5.3 Static efficiency eqn. 5.4 Assume 1750 rpm Outlet of 10” x 12” Q = 12030 cfm Static pressure = 2” 50 hp Density = 3.9E-5 lb/in^3 Dr. C. L. Jones Biosystems and Ag. Engineering