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The Fan: Including the Theory and Practice of Centrifugal and Axial Fans (Classic Reprint) - Tapa blanda
Sinopsis
Excerpt from The Fan: Including the Theory and Practice of Centrifugal and Axial Fans
That this equation cannot be that of all fans is obvious when we remember that in many fans the manometric efficiency increases at first as the orifice increases from zero, while this equation states that it decreases; nor can it be maintained that the equation applies to fans whose mano metric efficiency is greatest at zero orifice, for if the curve of manometric efficiency be drawn with this as ordinate and orifices as abscissae, it will be found that the tangent at the point where the curve cuts the vertical axis is horizon tal and that this is not the case may be seen from fig. 49, which gives curves for eleven fans differing widely in con struction. Having already studied the centrifugal pump, it occurred to me about ten years ago that its theory might be applied to that of the fan and except that the fan does not actually lift air, as the pump lifts water, but acts like a centrifugal pump that pumps against the resistance of horizontal piping only, I consider that the same theory may be applied to both.
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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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Reseña del editor
Excerpt from The Fan: Including the Theory and Practice of Centrifugal and Axial Fans
That this equation cannot be that of all fans is obvious when we remember that in many fans the manometric efficiency increases at first as the orifice increases from zero, while this equation states that it decreases; nor can it be maintained that the equation applies to fans whose mano metric efficiency is greatest at zero orifice, for if the curve of manometric efficiency be drawn with this as ordinate and orifices as abscissae, it will be found that the tangent at the point where the curve cuts the vertical axis is horizon tal and that this is not the case may be seen from fig. 49, which gives curves for eleven fans differing widely in con struction. Having already studied the centrifugal pump, it occurred to me about ten years ago that its theory might be applied to that of the fan and except that the fan does not actually lift air, as the pump lifts water, but acts like a centrifugal pump that pumps against the resistance of horizontal piping only, I consider that the same theory may be applied to both.
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.
Reseña del editor
Excerpt from The Fan: Including the Theory and Practice of Centrifugal and Axial Fans
In the following pages I give a theory of the fan which differs considerably from anything that I have seen in print, and which may therefore meet with some criticism.
That this equation cannot be that of all fans is obvious when we remember that in many fans the manometric efficiency increases at first as the orifice increases from zero, while this equation states that it decreases; nor can it be maintained that the equation applies to fans whose manometric efficiency is greatest at zero orifice, for if the curve of manometric efficiency be drawn with this as ordinate and orifices as abscissic, it will be found that the tangent at the point where the curve cuts the vertical axis is horizontal; and that this is not the case may be seen from fig. 44, which gives curves for eleven fans differing widely in construction. Having already studied the centrifugal pump, it occurred to me about ten years ago that its theory might be applied to that of the fan; and except that the fan does not actually lift air, as the pump lifts water, but acts like a centrifugal pump that pumps against the resistance of horizontal piping only, I consider that the same theory may be applied to both.
In Chapter XII. I have endeavoured to show that my theory agrees with the results of experiment, as far as these may be trusted. The following pages commence with the theory of the centrifugal fan following which are experiments with and descriptions of this type; and in Chapter XIV. is given a description of Prof. Rateau's high-pressure fans, in whose design it may be mentioned the variation of the density of the air must be taken into account.
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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The Fan: Including the Theory and Practice of Centrifugal and Axial Fans
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Paperback. Condición: New. Print on Demand. Delve into the fascinating world of air movement with this comprehensive guide to fan engineering. This book offers a unique perspective on fan theory, deviating from conventional approaches and providing fresh insights into the principles governing fan design and operation. The author challenges established equations and proposes a novel theory based on the principles of centrifugal pumps. This groundbreaking approach allows for a more accurate understanding of fan performance, particularly in terms of manometric efficiency and energy losses. Explore a range of fan types, including radial flow, mixed flow, and propeller fans, and gain valuable knowledge on their design, construction, and application. Discover the crucial role of diffusers, volutes, and chimneys in optimizing fan efficiency and delve into the intricate calculations involved in determining air density and pressure differences. Real-world examples and experimental data further enrich the understanding of these essential engineering concepts. Whether you are an engineer seeking to design more efficient fans or simply curious about the science behind air movement, this book provides invaluable insights that will deepen your appreciation for the intricate world of fan technology. Unlock the secrets of optimal air movement and gain a new perspective on the engineering marvels that keep our world ventilated and comfortable. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Nº de ref. del artículo: 9781332054657_0
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The Fan
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PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000. Nº de ref. del artículo: LW-9781332054657
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