Excerpt from Handbook for Heating and Ventilating Engineers In the development of Heating and Ventilating work, it is highly desirable that those engaged in the design and the installation of the apparatus be provided with a Handbook convenient for pocket use. Such a treatise should cover the entire field of heating and ventilation in a simplified form and should contain such tables as are commonly used in every day practice. This book aims to fulfill su'bh a need and is intended to supplement other more specialized works. Be cause of the scope of the work, its various phases could not be discussed exhaustively, but it is believed that the funda mental principles are stated and applied in such a way as to be easily understood. It is suggestive rather than diges tive. The principles presented are the same as those that have been stated many times before, but the arrangement of the work, the applications and the designs are all original. Many equations and rules are necessarily. Given; but it will be seen that, in most cases, they are developments from a few general equations, all of which can be readily under stood and remembered. Practical points in constructive de sign have also'been considered. However, since the prin ciples' of heating and ventilation are founded-upon funda mental thermodynamic laws, it seems best to accentuate the theoretical side of the work in the belief that if this is well understood, practical points of experience will easily follow. 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.