Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
An Empirical Study Of A Pin Fin Heat Exchanger In Laminar And Turbulent Flow
Download An Empirical Study Of A Pin Fin Heat Exchanger In Laminar And Turbulent Flow full books in PDF, epub, and Kindle. Read online An Empirical Study Of A Pin Fin Heat Exchanger In Laminar And Turbulent Flow ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis An Empirical Study of a Pin Fin Heat Exchanger in Laminar and Turbulent Flow by : Jeffrey W. Summers
Download or read book An Empirical Study of a Pin Fin Heat Exchanger in Laminar and Turbulent Flow written by Jeffrey W. Summers and published by . This book was released on 2003-12 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study concentrates on the empirical characterization of a staggered array pin fin compact heat exchanger placed in a modular, rectangular wind tunnel. A full analysis of the heat transfer and pressure drop behavior was conducted on various pin-fin shapes, sizes, and configurations. The study was based on airflow over a range of low Reynolds numbers in the laminar and low turbulent flow, as well as higher turbulent flow regimes. The empirical data gathered can be used to corroborate and develop better numerical models to characterize the performance of such compact heat exchangers.
Book Synopsis An Experimental Investigation of the Performance of Staggered PIN-FIN Array Laminar Flow Heat Exchangers by :
Download or read book An Experimental Investigation of the Performance of Staggered PIN-FIN Array Laminar Flow Heat Exchangers written by and published by . This book was released on 2005 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study concentrates on the empirical characterization of a staggered pin-fin array heat exchanger placed in a modular, rectangular wind tunnel. A full analysis of the heat transfer and pressure drop behavior was conducted on various pin-fin shapes, sizes, and configurations. The study was based on airflow over a wide range of Reynolds numbers in the laminar regime. The empirical data gathered can be used to corroborate and develop better numerical models to characterize the performance of such heat exchangers as well as scale down to the micro level for comparison with micro-heat exchangers.
Book Synopsis An Experimental Study of a Pin-Fin Heat Exchanger by : David Ramthun
Download or read book An Experimental Study of a Pin-Fin Heat Exchanger written by David Ramthun and published by . This book was released on 2003-06-01 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed experimental study has been carried out on the heat transfer and pressure drop characteristics of a compact heat exchanger with pin fins, A modular wind- tunnel with a rectangular cross-section duct-flow area was constructed that would accommodate the heat exchanger test section with varying pin designs. The flow in the tunnel was achieved through a suction-type blower, and a leading entrance length section was added to achieve predictable flow conditions into the heat exchanger test section. The rig was comprehensively instrumented to provide all desired thermal and flow data. The results from this study provide useful empirical data to validate ongoing numerical studies of such heat exchanger designs.
Book Synopsis Numerical Analysis of the Performance of Staggered Pin-Fin Micro Heat Exchangers by : Jui S. Choo
Download or read book Numerical Analysis of the Performance of Staggered Pin-Fin Micro Heat Exchangers written by Jui S. Choo and published by . This book was released on 2003-12-01 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: The heat transfer and pressure drop characteristics of a staggered micro pin-fin heat exchanger were analyzed using a three dimensional finite element based numerical model. Simulations were conducted based on low Reynolds number, fully developed laminar airflow through an array of circular pin-fins. A range of results was obtained from different configurations with varying pin spacing, axial pitch and pin height. The results from this study would be useful in ongoing work on the design of a laminar flow micro heat exchanger for high heat flux dissipation systems.
Book Synopsis Numerical Simulations of Laminar, Transitional, and Turbulent Flow and Heat Transfer in Continuous- and Interrupted-plate Channels by : Kelechi Ezeji
Download or read book Numerical Simulations of Laminar, Transitional, and Turbulent Flow and Heat Transfer in Continuous- and Interrupted-plate Channels written by Kelechi Ezeji and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The long-term goal of this research is to contribute to the development of mathematical models and numerical solution methods for use as cost-effective tools in procedures for designing the next generation of compact and ultra-compact heat exchangers (core heat transfer area density exceeding 700 m^2/m^3 and 3000 m^2/m^3, respectively). Such heat exchangers are expected to play a major role in ongoing worldwide efforts to propose novel energy conversion systems. The desire to participate in such efforts is the main motivation for this work. Attention in this work was focused on rectangular offset strip-fin plate-fin core configurations. Over the last 50 years, there have been many efforts to increase the compactness of such cores. However, increasing compactness reduces the hydraulic diameter and (hence) the Reynolds number, for the same average velocity, which can lead to turbulent-to-laminar transition. These consequences of increasing compactness bring up the issue of its effect on the rate of heat transfer for a fixed pumping power. The rectangular offset strip-fin plate-fin configuration causes starting, interrupting, and restarting of both velocity and thermal boundary layers, and also possible unsteadiness and vortex shedding; and these thermofluid features bring up the issue of maximizing heat transfer for specified heat transfer surface area and fixed pumping power.The main goal of this research was to contribute to the resolution of the first of the aforementioned two issues, in a highly cost-effective manner. Thus, fins of negligible thickness and flow passages of large cross-sectional aspect ratio were assumed, and attention was limited to steady two-dimensional fluid flow and heat transfer phenomena. Air was the fluid of choice, and it was assumed that its thermophysical properties remained essentially constant. Furthermore, the Eckert number was much less than one in the problems considered here, so viscous dissipation could be ignored.Elliptic and parabolic mathematical models of developing fluid flow and heat transfer in continuous parallel-plate channels and arrays of regular staggered plates were considered. Three different low-Reynolds-number turbulence models (all capable of predicting turbulent-laminar transition with reduction in Reynolds number) were selected for comparative assessment. These mathematical models were solved using two-dimensional elliptic (2DE) and parabolic (2DP) finite volume methods (FVMs): the 2DE FVM was an adapted version of an in-house code; the 2DP FVM was specially formulated and implemented for this work, retaining the momentum equation in the direction transverse to the main flow (a novel feature of the proposed method). Mathematical models of fully developed fluid flow and heat transfer in pipes and parallel-plate channels were also considered and solved using one-dimensional FVMs. The results were compared to those yielded by available empirical correlations and also experimental data. Finally, one of the three low-Reynolds-number turbulence models and the 2DP FVM were used to simulate fluid flow and heat transfer in three actual rectangular offset strip-fin plate-fin cores of compact heat exchangers.For fully developed flows, all three low-Reynolds-number turbulence models considered in this work gave results that showed excellent agreement with those yielded by available empirical correlations and also experimental data. For developing fluid flow and heat transfer, the 2DP results compared very well with the 2DE results; however, the 2DP FVM executed 700 to 12,000 times faster than the 2DE FVM for comparable computational grids. In simulations of developing fluid flow and heat transfer in continuous-plate channels and regular arrays of staggered plates, only one of the three low-Reynolds-number turbulence models gave good results. The details of the models, numerical methods, and results, and also some recommendations, are presented and discussed in this thesis." --
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1988 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low Reynolds Number Flow Heat Exchangers by : Sadık Kakaç
Download or read book Low Reynolds Number Flow Heat Exchangers written by Sadık Kakaç and published by Springer. This book was released on 1983 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ECOS 2012 The 25th International Conference on Efficiency, Cost, Optimization and Simulation of Energy Conversion Systems and Processes (Perugia, June 26th-June 29th, 2012) by : Umberto Desideri
Download or read book ECOS 2012 The 25th International Conference on Efficiency, Cost, Optimization and Simulation of Energy Conversion Systems and Processes (Perugia, June 26th-June 29th, 2012) written by Umberto Desideri and published by Firenze University Press. This book was released on 2012 with total page 3218 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 8-volume set contains the Proceedings of the 25th ECOS 2012 International Conference, Perugia, Italy, June 26th to June 29th, 2012. ECOS is an acronym for Efficiency, Cost, Optimization and Simulation (of energy conversion systems and processes), summarizing the topics covered in ECOS: Thermodynamics, Heat and Mass Transfer, Exergy and Second Law Analysis, Process Integration and Heat Exchanger Networks, Fluid Dynamics and Power Plant Components, Fuel Cells, Simulation of Energy Conversion Systems, Renewable Energies, Thermo-Economic Analysis and Optimisation, Combustion, Chemical Reactors, Carbon Capture and Sequestration, Building/Urban/Complex Energy Systems, Water Desalination and Use of Water Resources, Energy Systems- Environmental and Sustainability Issues, System Operation/ Control/Diagnosis and Prognosis, Industrial Ecology.
Book Synopsis Turbulent Flows and Heat Transfer by : Chia-Ch'iao Lin
Download or read book Turbulent Flows and Heat Transfer written by Chia-Ch'iao Lin and published by Princeton University Press. This book was released on 2015-12-08 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume V of the High Speed Aerodynamics and Jet Propulsion series. Topics include transition from laminar to turbulent flow; turbulent flow; statistical theories of turbulence; conduction of heat; convective heat transfer and friction in flow of liquids; convective heat transfer in gases; cooling by protective fluid films; physical basis of thermal radiation; and engineering calculations of radiant heat exchange. Originally published in 1959. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Book Synopsis Turbulent Heat Transfer and Flow Friction Characteristics of Plain Plate Fin Heat Exchanger Surfaces by : Stanford University. Department of Mechanical Engineering
Download or read book Turbulent Heat Transfer and Flow Friction Characteristics of Plain Plate Fin Heat Exchanger Surfaces written by Stanford University. Department of Mechanical Engineering and published by . This book was released on 1959 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pin Fin Heat Exchanger Surfaces by : Stanford University. Department of Mechanical Engineering
Download or read book Pin Fin Heat Exchanger Surfaces written by Stanford University. Department of Mechanical Engineering and published by . This book was released on 1953 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual IEEE Semiconductor Thermal Measurement and Management Symposium by :
Download or read book Annual IEEE Semiconductor Thermal Measurement and Management Symposium written by and published by . This book was released on 1998 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Advances in Analysis of Heat Transfer for Fin Type Surfaces by : Bengt Sundén
Download or read book Recent Advances in Analysis of Heat Transfer for Fin Type Surfaces written by Bengt Sundén and published by Witpress. This book was released on 2000 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Descripción del editor: "This volume is concerned with the heat transfer from extended surfaces, such as fins attached to a primary transfer surface. These are used extensively within heat exchanges and on heat transfer equipment to ensure that a specified rate of heat transfer is achieved between a heat source and sink. All of the chapters come from invited contributors and follow a unified outline and presentation.Contents: Overview of Extended Surface Heat Transfer ââ,¬â€œ Fins; Coupled Forced Convection, Conduction and Thermal Radiation of a Rectangular Fin in a Confined Space; Mechanistic Investigation of the Performance of a Triangular Fin; Conjugate Free and Mixed Convection Heat Transfer from a Vertical Fin Embedded in a Porous Medium; About Fin Performance and Optimization; Two-Dimensional Effects in Extended Surface Assessment; Steady-State Heat Transfer and Performance Assessment; Multi-Louvred Fin Surfaces; Methodology for the Design of Multi-Stream Plate-Fin Heat Exchangers; Incorporation of a Consideration of Operability into the Design of Multi-Stream Heat Exchangers." (WIT Press).
Book Synopsis Contraction Heat Transfer Coefficient Correlation for Rectangular Pin Fin Heat Sinks by : Stephan Schmitt
Download or read book Contraction Heat Transfer Coefficient Correlation for Rectangular Pin Fin Heat Sinks written by Stephan Schmitt and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The demand for smaller but more powerful electronic components is ever increasing. This demand puts a strain on engineers to produce optimal cooling designs for these electronic components. One method for cooling these electronic components is with heat sinks which effectively increase the surface area available for extracting the heat from the electronic components. Computational Fluid Dynamics (CFD) software is sometimes used to aid in the design process, but CFD simulations are computationally expensive and take long to complete. This causes the design engineer to test only a few proposed designs based on his/her experience and select the design that performs the best out of the tested designs, which might not be the optimum. The temperature distribution inside the heat sink can be solved relatively quickly with the diffusion equation, but the flow around the heat sink complicates the CFD simulation and increases the solving time significantly. Therefore, applications have been developed where the interaction between the heat sink and the flow around the heat sink is replaced by heat transfer coefficients. These coefficients are calculated from correlated equations which contain the flow properties. The flow properties are extracted from a flow network solver, which solves the flow around the heat sink. This procedure results in less expensive simulations, which can be used together with an optimisation procedure to develop an optimum cooling design. In this dissertation, a correlation for the contraction heat transfer coefficients of rectangular pin fin heat sinks was developed. A methodology was developed where consecutive regression lines were fitted to a large set of data extracted from numerous CFD simulations. The combination of these regression lines formed the basis of the correlation, which was divided into two correlations: one for laminar flow and another for turbulent flow. The correlations were tested against CFD simulations as well as experimental data. The results indicate that these correlations can be effectively used to calculate the contraction heat transfer coefficients on pin fin heat sinks.
Book Synopsis Heat Transfer with Laminar and Turbulent Flow Between Parallel Planes with Constant and Variable Wall Temperature and Heat Flux by : Peter Allen McCuen
Download or read book Heat Transfer with Laminar and Turbulent Flow Between Parallel Planes with Constant and Variable Wall Temperature and Heat Flux written by Peter Allen McCuen and published by . This book was released on 1962 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fluid Flow and Heat Transfer from a Pin Fin by : W. A. Khan
Download or read book Fluid Flow and Heat Transfer from a Pin Fin written by W. A. Khan and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Numerical Investigation of Thermal-hydraulic Characteristics in Three Dimensional Plate and Wavy Fin-tube Heat Exchangers for Laminar and Transitional Flow Regimes by : Satchit Pradip Panse
Download or read book A Numerical Investigation of Thermal-hydraulic Characteristics in Three Dimensional Plate and Wavy Fin-tube Heat Exchangers for Laminar and Transitional Flow Regimes written by Satchit Pradip Panse and published by . This book was released on 2005 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: The plate fin-and-tube heat exchangers are used in wide variety of industrial applications, particularly in the heating, air-conditioning and refrigeration industries. In most cases the working fluid is liquid on the tube side exchanging heat with a gas, usually air. The current study is focused on two fin configurations, the plain plate-fin and the wavy-fin. These two fin configurations are numerically investigated in both staggered and in-lined tube layouts. The present investigation ranges from laminar flow regime into the sub-critical or transitional flow regime. The suitability of the eddy viscosity turbulence models for the flow representation in the transitional flow regime is discussed in this study. This study reveals that the flow distinction between plain and wavy fin has a profound influence on the heat transfer and flow friction performance of these configurations when compared on the basis of tube layouts. The obtained results also indicate that the number of tube rows plays an important part for the overall heat exchanger performance and an optimum choice for the number of tube rows must be made in order to achieve the critical balance between high heat transfer performance and low pressure drop.
