The Thermal Conductivity and Diffusivity of Concrete (Classic Reprint)
Idioma: inglés
Editorial: Forgotten Books, 2017
- Tapa blanda
- Nuevo
Librería: Forgotten Books, London, Reino UnidoForgotten Books
Vendedor de AbeBooks desde 2 de junio de 2021
Condición: Nuevo
EUR 15,78
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Print on Demand. This book is an investigation into the thermal conductivity and diffusivity of concrete. The authors set out to determine the absolute thermal conductivity of a number of standard concrete mixtures, and also calculated the diffusivity from the specific heat, density, and thermal conductivity. The determinations of thermal conductivity for concrete are part of a larger study of the physical constants of concrete. The experimental work for this investigation was carried out by the Department of Theoretical and Applied Mechanics, University of Illinois, in 1920. The determinations of thermal conductivity and diffusivity were made on 51 concrete cylinders, including 3 cylinders of neat cement. Results of the observations and calculations are given for the 51 cylinders. The results are summarized and presented as average values of thermal conductivity and diffusivity for different mixtures of concrete and for white marble, at different temperatures. The book is a valuable resource for engineers, architects, and researchers working with concrete and other building materials. The data and insights presented in this book can help to improve the design and construction of buildings and other structures, by providing a better understanding of the thermal properties of concrete. 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.…
N° de ref. del artículo 9781333571528_0
- Título
- The Thermal Conductivity and Diffusivity of Concrete (Classic Reprint)
- Autor
- A. P. Carman, R. A. Nelson
- Editorial
- Forgotten Books
- Año de publicación
- 2017
- Estado
- New
- Tipo de libro
- print-on-demand item
- Encuadernación
- Paperback
- Idioma
- inglés
- ISBN 10
- 1333571526
- ISBN 13
- 9781333571528
- Catálogos de vendedores
- General Engineering
The conversion bf results given in either of the above units into other units is a matter of Simple calculation.
Upon this subject of units of thermal conductivity the following quotation is made from the excellent text-book of Ingersoll and Zoebel entitled The Mathematical Theory of Heat Conduction There is probably no subject in which the confusion of units is greater than that of heat conduction. While the physicist uses the metric or c.g.s. Unit - that is, the gram-calorie per second, per square centimeter of area, for a temperature gradient of a degree centigrade per centimeter - there is no such uniformity Of practice among engineers. The steam engineer refers his observations to the B.t.u. Per hour, per square foot, per degree Fahrenheit, per inch in thickness, while the refrig crating engineer prefers the day as the unit of time rather than the hour, and the electrical engineer uses various systems, based frs quently on the kilowatt, as representing the rate of heat flow. There are also numbers of other units, some of them making use of the idea Of thermal resistance, analogous to electrical resistance, and therefore being reciprocally related to conductivity. These various engineering units have been introduced to simplify the computation of heat losses in various types of problems, and on these grounds perhaps justify their existence; but from the standpoint of the present work they are, with one or two exceptions, not usable. This is because, in a large majority of the cases we shall have occasion to consider, it is not the conductivity but the diffusivity, or thermometric conductivity, which enters directly into the computations, and this latter is too complex a unit to use profitably with a mixture of English and metric systems, or an English system involving two different units of length - for example, feet and inches, as in common engineering practice. Only two, then, of the many heat-conduction units lend themselves readily to our purpose - the B.t.u. Per hour, per square foot, for a temperature gradient of a degree Fahrenheit per foot, and the metric unit. But the former is practically never used (the gradient being expressed in degrees per inch in the common engineering unit), while the latter is becoming-of more general use every day, so we shall confine our units and calculations to the metric system, giving in many cases, however, the English equivalents.
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.
“Sinopsis” puede pertenecer a otra edición de este título.
Reseña del editor
The conversion bf results given in either of the above units into other units is a matter of Simple calculation.
Upon this subject of units of thermal conductivity the following quotation is made from the excellent text-book of Ingersoll and Zoebel entitled The Mathematical Theory of Heat Conduction There is probably no subject in which the confusion of units is greater than that of heat conduction. While the physicist uses the metric or c.g.s. Unit - that is, the gram-calorie per second, per square centimeter of area, for a temperature gradient of a degree centigrade per centimeter - there is no such uniformity Of practice among engineers. The steam engineer refers his observations to the B.t.u. Per hour, per square foot, per degree Fahrenheit, per inch in thickness, while the refrig crating engineer prefers the day as the unit of time rather than the hour, and the electrical engineer uses various systems, based frs quently on the kilowatt, as representing the rate of heat flow. There are also numbers of other units, some of them making use of the idea Of thermal resistance, analogous to electrical resistance, and therefore being reciprocally related to conductivity. These various engineering units have been introduced to simplify the computation of heat losses in various types of problems, and on these grounds perhaps justify their existence; but from the standpoint of the present work they are, with one or two exceptions, not usable. This is because, in a large majority of the cases we shall have occasion to consider, it is not the conductivity but the diffusivity, or thermometric conductivity, which enters directly into the computations, and this latter is too complex a unit to use profitably with a mixture of English and metric systems, or an English system involving two different units of length - for example, feet and inches, as in common engineering practice. Only two, then, of the many heat-conduction units lend themselves readily to our purpose - the B.t.u. Per hour, per square foot, for a temperature gradient of a degree Fahrenheit per foot, and the metric unit. But the former is practically never used (the gradient being expressed in degrees per inch in the common engineering unit), while the latter is becoming-of more general use every day, so we shall confine our units and calculations to the metric system, giving in many cases, however, the English equivalents.
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.
“Acerca de” puede pertenecer a otra edición de este título.
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