Natural convection heat transfer for a staggered array of heated, horizontal cylinders within a rectangular enclosure PDF Download
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Author: Christopher Eric Triplett
Publisher:
ISBN:
Category :
Languages : en
Pages : 438
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Book Description
Author: Christopher Eric Triplett
Publisher:
ISBN:
Category :
Languages : en
Pages : 438
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This thesis presents the results of an experimental investigation of natural convection heat transfer in a staggered array of heated cylinders, oriented horizontally within a rectangular enclosure. The main purpose of this research was to extend the knowledge of heat transfer within enclosed bundles of spent nuclear fuel rods sealed within a shipping or storage container. This research extends Canaan's investigation of an aligned array of heated cylinders that thermally simulated a boiling water reactor (BWR) spent fuel assembly sealed within a shipping or storage cask. The results are presented in terms of piecewise Nusselt-Rayleigh number correlations of the form Nu = C(Ra)[sup n], where C and n are constants. Correlations are presented both for individual rods within the array and for the array as a whole. The correlations are based only on the convective component of the heat transfer. The radiative component was calculated with a finite-element code that used measured surface temperatures, rod array geometry, and measured surface emissivities as inputs. The correlation results are compared to Canaan's aligned array results and to other studies of natural convection in horizontal tube arrays.
Author:
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Category :
Languages : en
Pages :
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The natural convection heat transfer between arrays of horizontal, heated cylinders and their isothermal, cooled enclosure was experimentally investigated. Four different cylinder arrays were used: two in-line and two staggered. Four fluids (air, water, 20 cs silicone, and 96% glycerine) were used with Prandtl numbers ranging from 0.705 to 13090.0. There was no significant change in the Nusselt number between isothermal and constant heat flux conditions of the cylinder arrays. The average heat transfer coefficient was most affected by the spacing between cylinders and the total surface area of the cylinder arrays. The enclosure reduced the expected increase in both the average and the local heat transfer coefficients caused by changing the inner body from an in-line arrangement to a staggered arrangement of comparable spacing. An increase in fluid viscosity reduced the influence of the geometric effects.
Author:
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ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1072
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Author: Gad Hetsroni
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 648
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Book Description
Author: Robert Allen Weaver
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 150
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Book Description
Author: Gad Hetsroni
Publisher:
ISBN: 9780891169093
Category : Heat
Languages : en
Pages : 648
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Book Description
Author: Robert W. Vance
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 98
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Author: Carol Elizabeth Stephens
Publisher:
ISBN:
Category : Cylinders
Languages : en
Pages : 254
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Author: Robert Siegel
Publisher: CRC Press
ISBN: 9781560328391
Category : Technology & Engineering
Languages : en
Pages : 898
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Book Description
This extensively revised 4th edition provides an up-to-date, comprehensive single source of information on the important subjects in engineering radiative heat transfer. It presents the subject in a progressive manner that is excellent for classroom use or self-study, and also provides an annotated reference to literature and research in the field. The foundations and methods for treating radiative heat transfer are developed in detail, and the methods are demonstrated and clarified by solving example problems. The examples are especially helpful for self-study. The treatment of spectral band properties of gases has been made current and the methods are described in detail and illustrated with examples. The combination of radiation with conduction and/or convection has been given more emphasis nad has been merged with results for radiation alone that serve as a limiting case; this increases practicality for energy transfer in translucent solids and fluids. A comprehensive catalog of configuration factors on the CD that is included with each book provides over 290 factors in algebraic or graphical form. Homework problems with answers are given in each chapter, and a detailed and carefully worked solution manual is available for instructors.
