Here is the first comprehensive guide to all aspects of modern fan technology. The book takes you through the design, selection, maintenance, and repair of fans used in a wide range of applications and industries, including airfoils...centrifugal fans...mixed-flow fans...roof ventilators...cross-flow blowers...regenerative blowers... and more. You'll find information on fan codes, standards, and specificationsNplus complete details on fan testing, physical laws affecting fan performance, ventilation requirements, and symbols and conversion factors.