Fan Energy Diagram. When the current reaches here it starts producing the magnetic field that makes the fan rotate. Using the turbine engine station numbering system we begin with free stream conditions at station 0.
The chilled water loop starts with the. Suggested electric fan wiring diagrams suggested primary cooling fan single speed onoff using 12 volt switching devices only for primary activation note. Fan energy use can also be expressed as pcfm 01175 qcfm dpin μf μb μm 4b where pcfm power consumption w qcfm volume flow cfm dpin pressure increase in.
Note the condition of the inlet and outlet flow velocity triangles igvs can lead to excessive inlet losses but does give a well conditioned outlet flow.
As the flow slows some of the energy associated with the aircraft velocity increases the static pressure of the air. Pressure loss in ductwork has three components frictional losses along duct walls and dynamic losses in fittings and component losses in duct mounted equipment. A fan converts mechanical energy in the form of a rotating shaft into mechanical energy in the form of kinetic energy of the fluid medium usually air by means of a pressure differential. Note that efficiency is defined in the same manner.