Heat Transfer and Pressure Drop During Condensation and Evaporation of R-134a/oil Mixtures in Smooth and Micro-fin Tubes
Author: M. B. Pate
Publisher:
Published: 1990
Total Pages: 92
ISBN-13:
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Encyclopedia Of Two-phase Heat Transfer And Flow Iii: Macro And Micro Flow Boiling And Numerical Modeling Fundamentals (A 4-volume Set)
Author: John R Thome
Publisher: World Scientific
Published: 2018-03-13
Total Pages: 1460
ISBN-13: 9813227427
DOWNLOAD EBOOKSet III of this encyclopedia is a new addition to the previous Sets I and II. It contains 26 invited chapters from international specialists on the topics of numerical modeling of two-phase flows and evaporation, fundamentals of evaporation and condensation in microchannels and macrochannels, development and testing of micro two-phase cooling systems for electronics, and various special topics (surface wetting effects, microfin tubes, two-phase flow vibration across tube bundles). The chapters are written both by renowned university researchers and by well-known engineers from leading corporate research laboratories. Numerous 'must read' chapters cover the fundamentals of research and engineering practice on boiling, condensation and two-phase flows, two-phase heat transfer equipment, electronics cooling systems, case studies and so forth. Set III constitutes a 'must have' reference together with Sets I and II for thermal engineering researchers and practitioners.
Handbook of Phase Change
Author: S.G. Kandlikar
Publisher: Routledge
Published: 2019-01-22
Total Pages: 786
ISBN-13: 1351442198
DOWNLOAD EBOOKProvides a comprehensive coverage of the basic phenomena. It contains twenty-five chapters which cover different aspects of boiling and condensation. First the specific topic or phenomenon is described, followed by a brief survey of previous work, a phenomenological model based on current understanding, and finally a set of recommended design equa
Condensation of Hfc-134a and Hfc-404a in a Smooth and Micro-Fin Tube
Author: Pradeep Patil
Publisher: LAP Lambert Academic Publishing
Published: 2011-03
Total Pages: 208
ISBN-13: 9783844308426
DOWNLOAD EBOOKThe purpose of this work was to study the condensation heat transfer and pressure drop characteristics ofHFC-134a in a micro-fined tube with an 18 degree helix angle and to compare them to those in a smooth tube for various operating conditions.The experimental test facility is designed, developed and is used to determine the condensation HTC and pressure drop in smooth and micro-fin tubes for various HFC refrigerants namely HFC-134a, R-404A, R-407C, R-507A. The experimentation covers wide range of operating parameters such as mass flux and condensing temperatures. The instrumentations used for measurements are calibrated from recognized calibration centres. The hermetically sealed compressor is used for circulating refrigerant; effect of oil present in the refrigerant during condensation is also taken into account. The condensation of HFC-134a and R-404A in smooth and micro-fin tubes are measured and obtained the values of condensation HTCs and pressure drops for different mass flux and condensing temperatures
Heat Transfer Enhancement of Heat Exchangers
Author: Sadik Kakaç
Publisher: Springer Science & Business Media
Published: 2013-03-09
Total Pages: 670
ISBN-13: 9401591598
DOWNLOAD EBOOKHeat transfer enhancement in single-phase and two-phase flow heat exchangers in important in such industrial applications as power generating plant, process and chemical industry, heating, ventilation, air conditioning and refrigeration systems, and the cooling of electronic equipment. Energy savings are of primary importance in the design of such systems, leading to more efficient, environmentally friendly devices. This book provides invaluable information for such purposes.
Two-Phase Heat Transfer Enhancement
Author: Sujoy Kumar Saha
Publisher: Springer
Published: 2019-07-04
Total Pages: 121
ISBN-13: 3030207552
DOWNLOAD EBOOKThis Brief concerns heat transfer and pressure drop in heat transfer enhancement for boiling and condensation. The authors divide their topic into six areas: abrasive treatment and coatings, combined structured and porous surfaces, basic principles of boiling mechanism, vapor space condensation, convective vaporization, and forced condensation inside tubes. Within this framework, the book examines range of specific phenomena including abrasive treatment, open grooves, 3D cavities, etched surfaces, electroplating, pierced 3D cover sheets, attached wire and screen promoters, non-wetting coatings, oxide and ceramic coatings, porous surfaces, structured surfaces (integral roughness), combined structured and porous surfaces, composite surfaces, single-tube pool boiling tests, theoretical fundamentals like liquid superheat, effect of cavity shape and contact angle on superheat, entrapment of vapor in cavities, nucleation at a surface cavity, effect of dissolved gases, bubble departure diameter, bubble dynamics, boiling hysteresis and orientation effects, basic principles of boiling mechanism, visualization and mechanism of boiling in subsurface tunnels, and Chien and Webb parametric boiling studies.
Proceedings Of The International Heat Transfer Conference
Author: Lee
Publisher: CRC Press
Published: 1998-11-01
Total Pages: 696
ISBN-13: 9781560327974
DOWNLOAD EBOOKThis year's set of papers includes 23 Keynote Papers and 537 refereed General Papers, in seven volumes. Experts from around the world have combined to address the leading edge of research and practical innovations in convection, combustion, heat exchangers, two-phase flow, and much more. Whether one is involved in mechanical, chemical, nuclear, or energy engineering the quantity, international scope, and high quality of the contents make access to these volumes essential.
Evaporation and Condensation Heat Transfer and Pressure Drop in Horizontal, 12.7-mm Micro-fin Tubes with Refrigerant 22
Author: L. M. Schlager
Publisher:
Published: 1989
Total Pages: 16
ISBN-13:
DOWNLOAD EBOOKBoilers, Evaporators, and Condensers
Author: Sadik Kakaç
Publisher: John Wiley & Sons
Published: 1991-09-03
Total Pages: 868
ISBN-13: 9780471621706
DOWNLOAD EBOOKThis up-to-date reference covers the thermal design, operation and maintenance of the three major components in industrial heating and air conditioning systems including fossil fuel-fired boilers, waste heat boilers and air conditioning evaporators. Among the distinguishing features covered are: the numerous types of components in use and the features and relative merits of each, overviews of the major technical sections of the book, with suggested approaches to design based on industrial experience, case studies and examples of actual engineering problems, design methods and procedures based on current industrial practice in the United States, Russia, China and Europe with data charts, tables and thermal-hydraulic correlations for design included, and various approaches to design based on experience in the art of industrial process equipment design.
Influence of fully miscible lubrication oil on flow boiling of CO₂ inside horizontal evaporator tubes
Author: Wetzel, Markus
Publisher: KIT Scientific Publishing
Published: 2017-12-27
Total Pages: 452
ISBN-13: 3731507277
DOWNLOAD EBOOKFlow boiling heat transfer, pressure drop and flow pattern of CO?-POE oil mixtures were experimentally investigated in smooth and micro-fin tubes. The POE oil used features full miscibility in the range of operation investigated. The experimental data was evaluated based on mixture properties, used to evaluate and improve established predictive methods. The knowledge obtained contributes to understanding the influence of oil, which is essential for achieving an efficient evaporator design.
