Excerpt from Engineers Handbook of Tables Charts and Data on the Application of Centrifugal Fans and Fan System Apparatus, Including Engines and Motors, Air Washers, Hot Blast Heaters and Systems of Air Distribution HE use of the fan in general engineering practice is rapidly increasing, making it imperative that both the engineer and the architect become familiar with the fundamental principles governing the selection and application of fans for various purposes. Some general information has been published on the subject by the different fan builders, but what has' been given out has always been incomplete and frequently misleading, and did not afford sufficient data to be intelligently employed by the engineer. Heretofore no effort has been made to collect and present under one cover the latest and most reliable engineering data concerning fans and their application to various industrial requirements. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.