Abstract
This chapter deals with fans and blowers, which are two separate types of devices that have a similar function. Differences between these two devices are their rotating elements and their discharge-pressure capabilities. Centrifugal fans are one of the most common machines used in industry. The major classifications are propeller and axial. A fan is inherently a constant-volume machine. Brake horsepower (BHP) is the power input required by the fan shaft to produce the required volumetric flow rate and pressure, whereas, the fan capacity (FC) is the volume of air moved per minute by the fan. The fan rating predicts the fan's performance at one operating condition, which includes the fan size, speed, capacity, pressure, and horsepower. The outlet velocity is the number of cubic feet of gas moved by the fan per minute divided by the inside area of the fan outlet, or discharge area, in square feet. The tip speed (TS) is the peripheral speed of the fan wheel in feet per minute. Static pressure, static efficiency, mechanical efficiency, total pressure, velocity pressure, natural, frequency, and inlet-air conditions are also explained in the chapter. The basic fan laws, ductwork, and installation are discussed. Finally, the chapter describes fluidizers, which are identical to single-stage, screw-type compressors or blowers and are designed to provide moderate to high-pressure transfer of non-abrasive, dry materials.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
