Download or read book Heat Transfer and Pressure Drop During In tube Evaporation and Condensation of Near azeotropic Refrigerant Blends written by M. B. Pate and published by . This book was released on 1990 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Supercritical Gas Cooling and Near critical pressure Condensation of Refrigerant Blends in Microchannels written by Ulf Christian Andresen and published by . This book was released on 2007 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physical understanding and models resulting from this investigation provide the information necessary for designing and optimizing new components that utilize R410A for air-conditioning and heat pumping applications.

Download or read book The Effect of Oil on Heat Transfer and Pressure Drop During Evaporation and Condensation of Refrigerant Inside Augmented Tubes written by Lynn Michael Schlager and published by . This book was released on 1988 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heat Transfer and Pressure Drop During Condensation and Evaporation of R 134a oil Mixtures in Smooth and Micro fin Tubes written by M. B. Pate and published by . This book was released on 1990 with total page 92 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 The Heat Transfer and Pressure Drop Behavior of a Zeotropic Refrigerant Mixture in a Microfinned Tube written by Kathleen Anne Sweeney and published by . This book was released on 1996 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Oil on Heat Transfer and Pressure Drop Inside Augmented Tubes During Condensation and Evaporation of Refrigerants written by A. E. Bergles and published by . This book was released on 1985 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Oil on Heat Transfer and Pressure Drop Inside Augmented Tubes During Condensation and Evaporation of Refrigerants RP 469 written by L. M. Schlager and published by . This book was released on 1989 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaporation and Condensation Heat Transfer and Pressure Drop in Horizontal 12 7 mm Micro fin Tubes with Refrigerant 22 written by L. M. Schlager and published by . This book was released on 1989 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Condensation Heat Transfer and Pressure Drop of Oil refrigerant 113 Mixtures Inside Smooth and Internally Finned Tubes written by Biswajit Sur and published by . This book was released on 1990 with total page 584 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 Heat Transfer and Pressure Drop of Refrigerant R404A at Near critical and Supercritical Pressures written by Yirong Jiang and published by . This book was released on 2004 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive study of heat transfer and pressure drop of refrigerant R404A during condensation and supercritical cooling at near-critical pressures insde a 9.4mm tube was conducted. Investigations were carred out at five nominal pressures: 0.8, 0.9, 1.0, 1.1 and 1.2xP[subscript crit]. Heat transfer coefficients were measured using a thermal amplification technique that measures heat duty accurately while also providing refrigerant heat transfer coefficients with low uncertainties. For condensation tests, local heat transfer coefficients and pressure drops were measured for the mass flux range 200

Download or read book Evaporation Heat Transfer and Pressure Drop in Ozone safe Refrigerants and Refrigerant oil Mixtures written by John Stanley Panek and published by . This book was released on 1992 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparison of Heat Transfer and Pressure Drop Characteristics of Refrigerants 134a and 12 During Condensation Inside Smooth and Internally Finned Tubes written by Paul E. Koops and published by . This book was released on 1992 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Circuiting Arrangement on the Thermal Performance of Refrigeration Mixtures in Tube and Fin Condensing Heat Exchangers written by and published by . This book was released on 1999 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the pure or azeotropic refrigerants typically used in present air conditioning and refrigeration applications, the refrigerant changes phase at a constant temperature. Thus, the refrigerant circuiting arrangement such as crossfiow, counterfiow, or cross-counterflow, has no effect on the thermal performance. For zeotropic refrigerant mixtures, however, the phase-change occurs over a temperature range, or "glide", and the refrigerant circuiting arrangement, or flow path through the heat exchanger, can affect the thermal performance of both the heat exchangers as well as the overall efficiency of the vapor compression cooling cycle. The effects of tsvo diflerent circuiting arrangements on the thermal performance of a zeotropic retligerant mixture and an almost azeotropic refrigerant mixture in a four-row cross-countertlow heat exchanger arrangement are reported here. The two condensers differ only in the manner of circuiting the refrigerant tubes, where one has refrigerant always flowing downward in the active heat transfer region ("identical order") and the other has refrigerant alternating flow direction in the active heat transfer region ("inverted order"). All other geometric parameters, such as bce are% fin louver geometry, refrigerant tube size and enhancement etc., are the same for both heat exchangers. One refrigerant mixture (R-41OA) un & rgoes a small temperature change ("low glide") during phase change, and the other retligerant mixture (a multi- component proprietary mixture) has a substantial temperature change ("high glide") of approximately 10"C during the phase change process. The overall thermal conductance, two-phase conductance, and pressure drop are presented. For the flow conditions of these tests, which are representative of resi & ntial cooling conditions, inverted order circuiting is more desirable than identical order. The potential thermal advantages of the i & ntical order arrangement for high-glide zeotropic refrigerant mixtures are negated by the increased parasitic refrigerant-side pressure drop utiortunately resulting from tkbrication requirements of the identical order circuiting.

Download or read book Thermal Engineering for Global Environmental Protection written by Subrata Sengupta and published by Begell House Publishers. This book was released on 1996 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the fourth in a series of seminars on current topics in heat transfer presented to develop cooperation between the United States and Japanese heat transfer communities.

Download or read book Vapor Compression Heat Pumps with Refrigerant Mixtures written by Reinhard Radermacher and published by CRC Press. This book was released on 2005-06-23 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amidst tightening requirements for eliminating CFC's, HCFC's, halons, and HFC's from use in air conditioning and heat pumps, the search began for replacements that are environmentally benign, non-flammable, and similar to the banned refrigerants in system-level behavior. Refrigerant mixtures are increasingly used as working fluids because they demo