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Measurements Of Critical Heat Flux Post Dryout Pressure Drops And Wall Temperature In Tubes
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Book Synopsis Measurements of critical heat flux, post-dryout pressure drops and wall temperature in tubes by : L. K. H. Leung
Download or read book Measurements of critical heat flux, post-dryout pressure drops and wall temperature in tubes written by L. K. H. Leung and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A chf look-up table, applicable for both the loss-of-regulation (lor) and loss-of-coolant (loc) accident conditions, has been derived for a string of horizontal, candu-type, 37-element bundles. the bundle-chf look-up table is primarily based on the chf table for tubes and the correction factors accounting for the differences in geometry (between tubes and bundles) and in channel orientation (between vertical and horizontal flows). experimental results of chf in bundles are subsequently used to improve the accuracy of the table. the table-chf values have been adjusted to provide a correct and smooth parametric trend. within the ranges of experimental data, the prediction accuracy of the chf look-up table for bundles is excellent: rms errors are 4.6 percent for the data from the 6-m uniformly heated bundles, 5.8 percent from the 3-m uniformly heated bundles, 7.4 percent from the 1-m uniformly heated bundles and 6.8 percent for the initial dryout data from the 6-m non-uniformly heated bundles. predictions from the chf look-up table for bundles have also been compared against the bundle chf results obtained with freon-12, using the h2o/f-12 modelling parameters. these freon chf tests covered a range of mass flux from 1200-7450 kg.m-2.s-1 (water equivalent conditions). the overall rms error for four separate horizontal bundle-chf tests is 6.33 percent and for five vertical bundle-chf tests it is 5.09 percent. outside the ranges of the data base, the effect of flow stratification has been accounted for in the bundle-chf table by employing a semi-empirical correction factor which is obtained from a balance of turbulent force and gravitational forces. at conditions corresponding to stratified smooth or stratified wavy flow, the table values are equal to zero.
Book Synopsis Post-Dryout Heat Transfer by : G.F. Hewitt
Download or read book Post-Dryout Heat Transfer written by G.F. Hewitt and published by Routledge. This book was released on 2017-10-06 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of post-dryout heat transfer has generated great interest because of its importance in determining maximum clad temperature in nuclear reactor loss-of-coolant accidents (LOCAs). An associated phenomenon, the deterioration of heat transfer in boiling, is significant to other industrial sectors. This book provides comprehensive coverage of post-dryout heat transfer, discussing such essential topics as post-dryout heat transfer in dispersed flow, interpretation and use of transient data in surface rewetting by reinstatement of flow or by reducing heat flux, rod bundles, two-phase flow occurrences in the post-dryout region, various methods for predicting ""inverted annular flow,"" and new experiments for measuring thermodynamic nonequilibrium with probes in the channel. The book also presents a basis for independent safety assessment of nuclear reactors and chemical plant systems where post-dryout heat transfer may occur. Post-Dryout Heat Transfer will be a useful reference for researchers and professionals in the nuclear and chemical production industries.
Book Synopsis Post Critical Heat Transfer to Flowing Liquid in a Vertical Tube by : D. N. Plummer
Download or read book Post Critical Heat Transfer to Flowing Liquid in a Vertical Tube written by D. N. Plummer and published by . This book was released on 1974 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: The heat transfer characteristics of a liquid in vertical upflow in a tube in which the critical heat flux has been exceeded is investigated. Using a novel transient experimental technique the entire forced convection boiling curve for liquid nitrogen was obtained for a given mass flux-quality combination from which parametric effects of heater material, surface roughness and oxide scale, and dryout length on the dry wall film boiling region were determined. The results show that both increased roughness and oxide scale increase the post critical heat transfer. Increasing the dryout length decreases the heat transfer at a given mass flux-quality combination due to thermal nonequilibrium effects. No material effects were noted. Post critical heat transfer data is presented for a 0.4 igch I.D. tube at mass velocities of 30,000 to 220,000 lbm/ hr-ft for a quality range of 5 to 90 percent. Heat fluxes of 1,000 to 25,000 btu/hr-ft at wall superheats, (Twall - T sat, from 50 to 550*F were obtained. A post critical heat transfer prediction scheme has been developed from the simplification of an existing dispersed flow film boiling model which predicts the transient nitrogen data within approximately 10%. The scheme gives the correct functional dependence of mass flux, dryout quality, dryout length, and wall superheat, (T - T ), due to the implicit wall satu inclusion of thermal nonequilinrium effects. A preliminary comparison of the post critical heat transfer prediction scheme with post dryout water and Freon 12 data indicates similar results. Procedures are also presented that allow one to obtain the upper and lower bounds to the post critical heat transfer.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1982 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Critical Heat Flux and Pressure Drop Measurements in Round Vertical Tubes at the Pressure of 51 Kg/cm2 Abs by : A. Alexxandrini
Download or read book Critical Heat Flux and Pressure Drop Measurements in Round Vertical Tubes at the Pressure of 51 Kg/cm2 Abs written by A. Alexxandrini and published by . This book was released on 1963 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1985 with total page 1346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Design of Nuclear Reactors by : R. H. S. Winterton
Download or read book Thermal Design of Nuclear Reactors written by R. H. S. Winterton and published by Elsevier. This book was released on 2014-04-23 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal Design of Nuclear Reactors
Book Synopsis Two-Phase Flow and Heat Transfer by : Xue-jun Chen
Download or read book Two-Phase Flow and Heat Transfer written by Xue-jun Chen and published by Springer. This book was released on 1985-09 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heat Transfer in Condensation and Boiling by : Karl Stephan
Download or read book Heat Transfer in Condensation and Boiling written by Karl Stephan and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: I welcome the opportunity to have my book translated, because of the great emphasis on two-phase flow and heat transfer in the English-speaking world, as related to research, university education, and industrial practice. The 1988 Springer-Verlag edition of "Warmeiibergang beim Kondensieren und beim Sieden" has been enlarged to include additional material on falling film evaporation (Chapter 12) and pressure drop in two-phase flow (Chapter 13). Minor errors in the original text have also been corrected. I would like to express my sincere appreciation to Professor Green, Asso ciate Professor of German at Rensselaer, for his excellent translation and co operation. My thanks go also to Professor Bergles for his close attention to technical and linguistic details. He carefully read the typescript and made many comments and suggestions that helped to improve the manuscript. I hope that the English edition will meet with' a favorable reception and contribute to better understanding and to progress in the field of heat transfer in condensation and boiling. February 1992 K. Stephan Preface to the German-Language Edition This book is a continuation of the series "Heat and Mass Transfer" edited by U. Grigull, in which three volumes have already been published. Its aim is to acquaint students and practicing engineers with heat transfer during condensa tion and boiling, and is intended primarily for students and engineers in mechanical, chemical, electrical, and industrial processing engineering.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1970 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis First U.K. National Conference on Heat Transfer by : Sam Stuart
Download or read book First U.K. National Conference on Heat Transfer written by Sam Stuart and published by Elsevier. This book was released on 2013-10-22 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: First U.K. National Conference on Heat Transfer, Volume 1, documents the proceedings of the conference organized by the U.K. National Committee for Heat Transfer—a joint committee of the Institutions of Chemical and Mechanical Engineers and includes a member nominated by the Heat Transfer Society—held at the University of Leeds, on 3-5 July 1984. It is intended that the Leeds conference will be the first of a series of UK National Conferences which will be held at four-yearly intervals (1984, 1988, 1992 etc). Thus, for people working in the heat transfer field there will be an opportunity to present and discuss their work at a major conference every two years. This volume contains 55 papers that are presented during Sessions 1-10. The papers in Session 1 deal with post dry-out and drop heat transfer. Session 2 presents studies on the thermal hydraulic aspects of accidents and transients. Session 3 contains papers on the thermal hydraulics of reflood. Session 4 focuses on reactor operational heat transfer while Session 5 deals with AGR and other fuel heat transfer. The presentations in Session 6 cover fouling mechanisms while those in Session 7 focus on fouling detection, inhibition, and control. Session 8 takes up heat transfer in regenerators and fixed beds. Session 9 discusses papers on heat exchange networks. Session 10 contains studies on condensation and condensers.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-06 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Engineering Abstracts written by and published by . This book was released on 1984 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Heat Transfer by : James P. Hartnett
Download or read book Advances in Heat Transfer written by James P. Hartnett and published by Elsevier. This book was released on 2002-07-25 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Heat Transfer
Book Synopsis Boiling Heat Transfer And Two-Phase Flow by : L S Tong
Download or read book Boiling Heat Transfer And Two-Phase Flow written by L S Tong and published by Routledge. This book was released on 2018-05-04 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely updated, this graduate text describes the current state of boiling heat transfer and two-phase flow, in terms through which students can attain a consistent understanding. Prediction of real or potential boiling heat transfer behaviour, both in steady and transient states, is covered to aid engineering design of reliable and effective systems.
Book Synopsis Thermal-hydraulics of Nuclear Reactors by : Mati Merilo
Download or read book Thermal-hydraulics of Nuclear Reactors written by Mati Merilo and published by . This book was released on 1983 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
