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Study Of Laminar Flow Forced Convection Heat Transfer Behavior Of A Phase Change Material Fluid
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Book Synopsis Study of Laminar Flow Forced Convection Heat Transfer Behavior of a Phase Change Material Fluid by : Gurunarayana Ravi
Download or read book Study of Laminar Flow Forced Convection Heat Transfer Behavior of a Phase Change Material Fluid written by Gurunarayana Ravi and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The heat transfer behavior of phase change material fluid under laminar flow conditions in circular tubes and internally longitudinal finned tubes are presented in this study. Two types of boundary conditions, including uniform axial heat flux with constant peripheral temperature and uniform axial and peripheral temperature, were considered in the case of circular tubes. An effective specific heat technique was used to model the phase change process assuming a hydrodynamically fully-developed flow at the entrance of the tube. Results were also obtained for the phase change process under hydro dynamically and thermally fully developed conditions. In case of a smooth circular tube with phase change material (PCM) fluid, results of Nusselt number were obtained by varying the bulk Stefan number. The Nusselt number results were found to be strongly dependent on the Stefan number. In the case of a finned tube two types of boundary conditions were studied. The first boundary condition had a uniform axial heat flux along the axis of the tube with a variable temperature on the peripheral surface of the tube. The second boundary condition had a constant temperature on the outer surface of the tube. The effective specific heat technique was again implemented to analyze the phase change process under both the boundary conditions. The Nusselt number was determined for a tube with two fins with different fin height ratios and fin thermal conductivity values. It was determined that the Nusselt number was strongly dependent on the Stefan number, fin thermal conductivity value, and height of the fins. It was also observed that for a constant heat axial flux boundary condition with peripherally varying temperature, the phase change slurry with the internally finned tube performed better than the one without fins. A similar trend was observed during the phase change process with internal fins under the constant wall temperature boundary condition.
Book Synopsis Laminar Flow Forced Convection Heat Transfer Behavior of Phase Change Material Fluid in Straight and Staggered Pin Microchannels by : Satyanarayana Kondle
Download or read book Laminar Flow Forced Convection Heat Transfer Behavior of Phase Change Material Fluid in Straight and Staggered Pin Microchannels written by Satyanarayana Kondle and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Microchannels have been studied extensively for electronic cooling applications ever since they were found to be effective in removing high heat flux from small areas. The rate of heat removed using microchannels depends on many factors including the geometry shape, solid and fluid materials used, and surface roughness, among others. Many configurations of microchannels have been studied with various materials and compared for their effectiveness in heat removal. However, there is little research done so far in using Phase Change Material (PCM) fluids and pin fins in microchannels to enhance the heat transfer. PCM fluids exhibit greater heat transfer when the phase change material undergoes liquid-to-solid transformation. Staggered pins in microchannels have also shown higher heat removal characteristics because of the continuous breaking and formation of the thermal and hydrodynamic boundary layer; they also exhibit higher pressure drop because pins act as flow obstructers. This paper presents numerical results of circular, square, straight rectangular microchannels with various aspect ratios (1:2, 1:4 and 1:8), and rectangular microchannels with two characteristic staggered pins (square and circular, fixed height with no variation in aspect ratio). The heat transfer performance of a single phase fluid and PCM fluid in all of these microchannels and the corresponding pressure drop characteristics are also presented. An effective specific heat capacity model was used to account for the phase change process of PCM fluid. Comparison of heat transfer characteristics of single phase fluid and PCM fluid are presented for all the geometries considered. Among the straight microchannels, 1:8 geometry was found to have the highest Nusselt number. The use of PCM fluid in straight microchannels increased the Nusselt number by 3-7 percent compared to the single phase fluids. Among the staggered pin microchannels, circular pins were found to be more effective in terms of heat transfer by exhibiting higher Nusselt number. Circular pin microchannels were also found to have lower pressure drop compared to the square pin microchannels. Overall, for all the geometries considered, it was found that the PCM fluid enhances the heat transfer compared to the SPF fluid.
Book Synopsis Laminar Flow Forced Convection Heat Transfer Behavior of a Phase Change Material Fluid in Microchannels by :
Download or read book Laminar Flow Forced Convection Heat Transfer Behavior of a Phase Change Material Fluid in Microchannels written by and published by . This book was released on 2009 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laminar Flow Forced Convection Heat Transfer Behavior of Phase Change Material Fluid in Microchannels by : Satyanarayana Kondle
Download or read book Laminar Flow Forced Convection Heat Transfer Behavior of Phase Change Material Fluid in Microchannels written by Satyanarayana Kondle and published by . This book was released on 2013 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laminar Flow Forced Convection Heat Transfer Behavior of a Phase Change Material Fluid in Finned Tubes by :
Download or read book Laminar Flow Forced Convection Heat Transfer Behavior of a Phase Change Material Fluid in Finned Tubes written by and published by . This book was released on 2009 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laminar Flow Forced Convection Heat Transfer Behavior of Phase Change Material Fluid in Microchannels with Staggered Pins by : Satyanarayana Kondle
Download or read book Laminar Flow Forced Convection Heat Transfer Behavior of Phase Change Material Fluid in Microchannels with Staggered Pins written by Satyanarayana Kondle and published by . This book was released on 2010 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laminar Flow Forced Convection in Ducts by : R. K. Shah
Download or read book Laminar Flow Forced Convection in Ducts written by R. K. Shah and published by . This book was released on 1978 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Survey of Heat Transfer to Near-critical Fluids by : Robert C. Hendricks
Download or read book Survey of Heat Transfer to Near-critical Fluids written by Robert C. Hendricks and published by . This book was released on 1970 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Single-Phase Convective Heat Transfer by : Sadik Kakaç
Download or read book Handbook of Single-Phase Convective Heat Transfer written by Sadik Kakaç and published by Wiley-Interscience. This book was released on 1987-11-03 with total page 1268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Very Good,No Highlights or Markup,all pages are intact.
Book Synopsis Laminar Flow and Convective Transport Processes by : Howard Brenner
Download or read book Laminar Flow and Convective Transport Processes written by Howard Brenner and published by Elsevier. This book was released on 2013-10-22 with total page 761 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laminar Flow and Convective Transport Processes: Scaling Principles and Asymptotic Analysis presents analytic methods for the solution of fluid mechanics and convective transport processes, all in the laminar flow regime. This book brings together the results of almost 30 years of research on the use of nondimensionalization, scaling principles, and asymptotic analysis into a comprehensive form suitable for presentation in a core graduate-level course on fluid mechanics and the convective transport of heat. A considerable amount of material on viscous-dominated flows is covered. A unique feature of this book is its emphasis on scaling principles and the use of asymptotic methods, both as a means of solution and as a basis for qualitative understanding of the correlations that exist between independent and dependent dimensionless parameters in transport processes. Laminar Flow and Convective Transport Processes is suitable for use as a textbook for graduate courses in fluid mechanics and transport phenomena and also as a reference for researchers in the field.
Book Synopsis A Review of High-speed, Convective, Heat-transfer Computation Methods by : Michael E. Tauber
Download or read book A Review of High-speed, Convective, Heat-transfer Computation Methods written by Michael E. Tauber and published by . This book was released on 1989 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Heat Transfer by : Warren M. Rohsenow
Download or read book Handbook of Heat Transfer written by Warren M. Rohsenow and published by McGraw-Hill Companies. This book was released on 1973 with total page 1552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Study of the Thermal and Rheological Behaviour of Paraffin-in-water Emulsions Used as a Secondary Refrigerants by : Virginia Vasile
Download or read book Experimental Study of the Thermal and Rheological Behaviour of Paraffin-in-water Emulsions Used as a Secondary Refrigerants written by Virginia Vasile and published by . This book was released on 2019 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: A phase change material emulsion (PCME) is a fluid consisting of an emulsion of a phase change material (PCM), such as paraffin, dispersed in a carrier fluid (contiunuous phase), often water of an aqueous solution of surfactant. PCMEs can be considered as potential high performance thermal fluids (used as secondary refrigerants or as heat transport fluids) owing to their latent heat involved in the fusion of cristalisation of the PCM. This thesis reports experimental results concerning the thermo-rheological behavior of different versions of a PCME (30%wt. paraffin concentration in various acqueous solutions of surfactant) over the temperature range [0 - 20 °C]. The thermophysical properties of the PCMEs were determined. Then, an experimental study of forced convection heat transfer during laminar flow was carried out. The convective heat transfer coefficient of the PCMEs during cooling was determined in an experimental configuration mocking up applications in plate heat exchangers. The configuration mainly consists of two 1 m long rectangular channels (80 x 6 mm2). Correlations were developped for the prediction of the (local and overall) heat transfers coefficients, based on the Nussel, Reynolds and Prandtl numbers. A specific test bench was also used to analyse the rheological behaviour of the PCMEs. Tests were carried out using a viscometer at different temperatures. The stability of the emulsion was examined under various thermo-mechanical loads. Experiments revealed a pseudoplastic behavior for all tested versions of the PCME. All these results show that PCMEs are an attractive candidate for their applications in the field of air conditioning.
Book Synopsis Heat Transfer to Non-Newtonian Fluids by : Aroon Shenoy
Download or read book Heat Transfer to Non-Newtonian Fluids written by Aroon Shenoy and published by John Wiley & Sons. This book was released on 2018-03-12 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been written with the idea of providing the fundamentals for those who are interested in the field of heat transfer to non-Newtonian fluids. It is well recognized that non-Newtonian fluids are encountered in a number of transport processes and estimation of the heat transfer characteristics in the presence of these fluids requires analysis of equations that are far more complex than those encountered for Newtonian fluids. A deliberate effort has been made to demonstrate the methods of simplification of the complex equations and to put forth analytical expressions for the various heat transfer situations in as vivid a manner as possible. The book covers a broad range of topics from forced, natural and mixed convection without and with porous media. Laminar as well as turbulent flow heat transfer to non-Newtonian fluids have been treated and the criterion for transition from laminar to turbulent flow for natural convection has been established. The heat transfer characteristics of non-Newtonian fluids from inelastic power-law fluids to viscoelastic second-order fluids and mildly elastic drag reducing fluids are covered. This book can serve the needs of undergraduates, graduates and industry personnel from the fields of chemical engineering, material science and engineering, mechanical engineering and polymer engineering.
Book Synopsis Convective Heat and Mass Transfer by : S. Mostafa Ghiaasiaan
Download or read book Convective Heat and Mass Transfer written by S. Mostafa Ghiaasiaan and published by CRC Press. This book was released on 2018-06-12 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: Convective Heat and Mass Transfer, Second Edition, is ideal for the graduate level study of convection heat and mass transfer, with coverage of well-established theory and practice as well as trending topics, such as nanoscale heat transfer and CFD. It is appropriate for both Mechanical and Chemical Engineering courses/modules.
Book Synopsis Forced Convection Heat Transfer with Water and Phase-change- Material Slurries: Turbulent Flow in a Circular Tube by : Eunsoo Choi
Download or read book Forced Convection Heat Transfer with Water and Phase-change- Material Slurries: Turbulent Flow in a Circular Tube written by Eunsoo Choi and published by . This book was released on 1993 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fluid Mechanics and Heat Transfer for Gases (air, He, H2 and N2) Flowing Single Phase in Closed Channels by : Rose Kraft
Download or read book Fluid Mechanics and Heat Transfer for Gases (air, He, H2 and N2) Flowing Single Phase in Closed Channels written by Rose Kraft and published by . This book was released on 1962 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
