Download or read book Condensation heat transfer and pressure drop coefficients of R22 R142b in a water cooled helicaly coiled tube in tube heat exchanger written by Shiko Ashandemie Kebonte and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Heat Transfer written by and published by . This book was released on 2002 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Heat Transfer and Pressure Drop for Water Flow in Helically Coiled Tubes in the Laminar and Transition Regions written by Harry Edward Dombrowski and published by . This book was released on 1967 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Condensation Heat Transfer written by P. J. Marto and published by . This book was released on 1979 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of Dry out Pressure Drop and Heat Transfer in a Helically Coiled Tube with High Pressure Water as Coolant written by G. F. Stevens and published by . This book was released on 1972 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HEAT TRANSFER COEFFICIENT OF CONDENSATION OF VAPORS OF NONMISCIBLE LIQUIDS ON HORIZONTAL PIPES written by Utah Tsao and published by . This book was released on 1940 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaporating Condensing and Cooling Apparatus written by Eugen Hausbrand and published by . This book was released on 1916 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Local Heat transfer Coefficients and Static Pressures for Condensation of High velocity Steam Within a Tube written by Jack H. Goodykoontz and published by . This book was released on 1967 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat transfer Coefficients for Condensing Vapors written by Bernard Villars Baus and published by . This book was released on 1950 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Condensation Heat Transfer Enhancement written by V. G. Rifert and published by WIT Press (UK). This book was released on 2004 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: In processes with condensation of steam-to-gas compositions or refrigerative agents an intensification of condensation is often required because thermal resistance on the condensation side can be greater than the thermal resistance of the heat transfer wall on the cooling side. In this work, a pair of researchers from the National Technical U. of Ukraine and the State Academy of Refrigeration (Ukraine) provide information about the enhancement of condensation, including research results from the former USSR they feel deserves wider dissemination as well as discussion of different theoretical models of the condensation process. The US office of WIT Press is Computational Mechanics. Annotation : 2004 Book News, Inc., Portland, OR (booknews.com).
Download or read book An Experimental Investigation of Dry out Pressure Drop and Heat Transfer in a Helically Coiled Tube with High Pressure Water as Coolant written by G. F. Stevens and published by . This book was released on 1972 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Condensation of Refrigerants Flowing Inside Smooth and Corrugated Tubes written by and published by . This book was released on 1995 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because heat exchanger thermal performance has a direct fluence on the overall cycle performance of vapor-compression refrigeration machinery, enhanced heat transfer surfaces are of interest to improve the efficiency of heat pumps and air conditioners. We investigated R-22 and a nonazeotropic refrigerant mixture (NARM) of 75% R-143a and 25% R-124 (by mass) to study their thermal performance in a condenser made of conventional smooth tubes and another condenser made of corrugated, or spirally indented, tubes. We investigated the condensing heat transfer and pressure drop characteristics in an experimental test loop model of a domestic beat pump system employing a variable speed compressor. The refrigerant circulates inside the central tube and the water circulates in the annulus. At refrigerant mass fluxes of approximately 275--300 kg/m2s, the measured irreversible pressure drop of the corrugated surface was 23% higher than that of the smooth surface for the R-22. At refrigerant mass fluxes of 350-370 kg/m2s, the irreversible pressure drop of the corrugated surface was 36% higher than that of the smooth surface for the NARM. The average heat transfer coefficient for the corrugated surface for R-22 was roughly 40% higher than that for the smooth tube surface at refrigerant mass fluxes of 275--295 kg/m2s. The average heat transfer coefficient for the corrugated surface for the NARM was typically 70% higher than that for the smooth tube surface at refrigerant mass fluxes of 340--385 kg/m2s.
Download or read book Heat Transfer and pressure drop of air in forced convection across triangular pitch banks of finned tubes written by Dennis J. Ward and published by . This book was released on 1956 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Condensation of Hydrocarbon and Zeotropic Hydrocarbon refrigerant Mixtures in Horizontal Tubes written by Jeffrey A. Milkie and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation of condensation of hydrocarbons and hydrocarbon/refrigerant mixtures in horizontal tubes was conducted. Heat transfer coefficients and frictional pressure drops during condensation of a zeotropic binary mixture of R245fa and n-pentane in a 7.75 mm internal diameter round tube were measured across the entire vapor-liquid dome, for mass fluxes ranging from 150 to 600 kg m-2 s-1, and reduced pressures ranging from 0.06 to 0.23. Condensation experiments were conducted for the mixture, as well as its pure constituents over a similar range of conditions. In addition, condensing flow of the hydrocarbon propane was documented visually using high-speed video recordings. Results from these experiments were used to establish the two-phase flow regimes, void fractions, and liquid film thicknesses during condensation of propane flowing through horizontal tubes with internal diameters of 7 and 15 mm. These measurements were made over mass fluxes ranging from 75 to 450 kg m-2 s-1, operating pressures ranging from 952 to 1218 kPa, and vapor qualities ranging from 0.05 to 0.95. Liquid film thickness and void fraction data were subsequently be used to assist the development of heat transfer and pressure drop models. In particular, the heat transfer coefficients and pressure drops observed in the mixture were compared with the corresponding values for the pure constituents. Models for heat transfer and pressure drop in the pure components as well as the mixtures were developed based on the data from the present study. This work extends the available literature on two-phase flow regimes for air-water mixtures, steam, and refrigerants to include hydrocarbons. Additionally, the limited information on condensation in multi-constituent hydrocarbon-hydrocarbon and refrigerant-refrigerant mixtures was extended to include hydrocarbon-refrigerant mixtures. The findings of this study are expected to benefit applications such as refrigeration, low-grade heat-driven power generation, and the development of heat exchangers for the chemical and process industries.
Download or read book Convective Heat Transfer Coefficients and Pressure Drop Data from Multi start Helical Fin Tubes in Longitudinal Flow written by Leonard S. Thomas and published by . This book was released on 1966 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Condensation Coefficient of Water written by Khosrow Nabavian and published by . This book was released on 1962 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
