Steam Pipes, Their Design and Construction

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Excerpt from Steam Pipes, Their Design and Construction: A Treatise of the Principles of Steam Conveyance Ance and Means and Materials Employed, in Practice, to Secure Economy If any engineer will refer to his various text-books for information on steam piping, he will find very little to assist him. The earliest steam pipes served to convey steam at atmospheric pressure into cylinders of large size. The object of the steam was simply to fill the cylinder with a condensible vapour, so that upon cooling it there was a vacuum formed and the air pressure on the opposite face of the piston was made to do work. So long as the piston could be drawn up by the weight of the pump spear rods hung to the opposite end of the beam, it mattered little that the pipes were small, for there was no object in filling the cylinder with steam at full boiler pressure, for the vacuum obtained on condensing would be better as the steam was the less in quantity. When the steam engine was made rotative its piston speed became great and more regular, and pipes of a definite size began to be found necessary. 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.