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Excerpt from Effect of the Variation of Initial and Back Pressure on the Economy of a Simple, High Speed, Automatic Steam Engine: A Thesis The performance of a steam engine is often ex pressed in terms of a certain weight of water per horse-power per hour. This is a very indefinite rating for comparison except where conditions of initial and back pressure and quality are the same, as the weight of steam used is largely depen dent on these conditions. This series of tests was undertaken for the purpose of determining What relation exists between the economy of a steam engine and the initial and neck pressures. 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.

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