Download or read book Numerical Performance Evaluation of Plain Fin Tube Heat Exchanger Under Frosty Conditions written by Amar Ali Hussein and published by . This book was released on 2010 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat exchangers are devices used to transfer thermal energy between two fluids or more, existing in different temperatures. Heat exchangers exist in many types and shapes, so they can be found in many applications. Plain fin and circular tube heat exchangers are commonly used in refrigerators and air-conditioning devices. In this type of heat exchanger, surface's temperature falls below the freezing temperature of water vapor existed in the air flows across these exchangers. The low temperature makes this vapor accumulates on exchanger's surfaces and forms frost. This degrades the performance of these exchangers by decreasing the heat transfer rate as frost works as thermal resistance. As a result to this problem the refrigerator or the air-condition needs more time to reach the desired point of cooling and this makes penalty in saving energy of electricity. In the present research, numerical study has been adopted to analyze and find way to enhance the performance of the plain fin and circular tubes heat exchangers. Three-dimensional simulations have been conducted to analyze the effects of three different collar diameters (7.53, 8.51 and 10.23 mm) on the heat transfer rate and pressure drop as first objective. The effects of three different half-transverse tube pitches to longitudinal tube pitch ratio Tp on the heat transfer rate and pressure drop have been also analyzed. Model geometries have been drawn and meshed in GAMBIT 2.3 and simulations have been performed in commercial CFD code FLUENT 6.3. Results showed that heat transfer rate has increased as the collar diameter increased with penalty in the increasing of pressure drop. It was also found that the heat transfer rate has increased as Tp ratio increased, but the pressure drop increased for Tp = 0.5 and decreased for Tp = 1. Therefore, to enhance performance without changing the size of the exchanger can be achieved by increasing the collar diameter with consideration of the pressure drop limitations. Instead, if the free space considered in the device has flexibility, the enhancement can be achieved by increasing the transverse tube pitch length.

Download or read book Two Phase Flow Phase Change and Numerical Modeling written by Amimul Ahsan and published by BoD – Books on Demand. This book was released on 2011-09-26 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: The heat transfer and analysis on laser beam, evaporator coils, shell-and-tube condenser, two phase flow, nanofluids, complex fluids, and on phase change are significant issues in a design of wide range of industrial processes and devices. This book includes 25 advanced and revised contributions, and it covers mainly (1) numerical modeling of heat transfer, (2) two phase flow, (3) nanofluids, and (4) phase change. The first section introduces numerical modeling of heat transfer on particles in binary gas-solid fluidization bed, solidification phenomena, thermal approaches to laser damage, and temperature and velocity distribution. The second section covers density wave instability phenomena, gas and spray-water quenching, spray cooling, wettability effect, liquid film thickness, and thermosyphon loop. The third section includes nanofluids for heat transfer, nanofluids in minichannels, potential and engineering strategies on nanofluids, and heat transfer at nanoscale. The forth section presents time-dependent melting and deformation processes of phase change material (PCM), thermal energy storage tanks using PCM, phase change in deep CO2 injector, and thermal storage device of solar hot water system. The advanced idea and information described here will be fruitful for the readers to find a sustainable solution in an industrialized society.

Download or read book Compact Heat Exchangers written by Alexander Louis London and published by CRC Press. This book was released on 1990 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat exchangers are a crucial part of aerospace, marine, cryogenic and refrigeration technology. These essays cover such topics as complicated flow arrangements, complex extended surfaces, two-phase flow and irreversibility in heat exchangers, and single-phase heat transfer.

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1954 with total page 1282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heat Transfer and Pressure Drop Performance of a Finned tube Heat Exchanger Proposed for Use in the NASA Lewis Altitude Wind Tunnel written by and published by . This book was released on 1985 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1971 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Frost Formation on the Thermal Performance of Finned Tube Heat Exchangers written by Sekhar N. Kondepudi and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heating Ventilating and Air Conditioning written by Faye C. McQuiston and published by John Wiley & Sons. This book was released on 2004-08-06 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: HEATING, VENTILATING, AND AIR CONDITIONING Completely revised with the latest HVAC design practices! Based on the most recent standards from ASHRAE, this Sixth Edition provides complete and up-to-date coverage of all aspects of heating, ventilation, and air conditioning. You’ll find the latest load calculation procedures, indoor air quality procedures, and issues related to ozone depletion. Throughout the text, numerous worked examples clearly show you how to apply the concepts in realistic scenarios. In addition, several computer programs (several new to this edition) help you understand key concepts and allow you to simulate various scenarios, such as psychometrics and air quality, load calculations, piping system design, duct system design, and cooling coil simulation. Additionally, the load calculation program has been revised and updated. These computer programs are available at the book’s website: www.wiley.com/college/mcquiston Key Features of the Sixth Edition Additional new worked examples in the text and on the accompanying software. Chapters 6-9 have been extensively revised for clarity and ease of use. Chapter 8, The Cooling Load, now includes two approaches: the heat balance method, as recommended by ASHRAE, and the simpler RTS method. Both approaches include computer applications to aid in calculations. Provides complete, authoritative treatment of all aspects of HVAC, based on current ASHRAE standards. Numerous worked examples and homework problems provide realistic scenarios to apply concepts.

Download or read book Fundamentals of Heat Exchanger Design written by Ramesh K. Shah and published by John Wiley & Sons. This book was released on 2003-08-11 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive and unique source integrates the material usually distributed among a half a dozen sources. * Presents a unified approach to modeling of new designs and develops the skills for complex engineering analysis. * Provides industrial insight to the applications of the basic theory developed.

Download or read book Flow Based Optimization of Products or Devices written by Nils Tångefjord Basse and published by MDPI. This book was released on 2020-11-13 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flow-based optimization of products and devices is an immature field compared to the corresponding topology optimization based on solid mechanics. However, it is an essential part of component development with both internal and/or external flow. The aim of this book is two-fold: (i) to provide state-of-the-art examples of flow-based optimization and (ii) to present a review of topology optimization for fluid-based problems.

Download or read book Steam Generators and Waste Heat Boilers written by V. Ganapathy and published by CRC Press. This book was released on 2014-10-10 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Incorporates Worked-Out Real-World Problems Steam Generators and Waste Heat Boilers: For Process and Plant Engineers focuses on the thermal design and performance aspects of steam generators, HRSGs and fire tube, water tube waste heat boilers including air heaters, and condensing economizers. Over 120 real-life problems are fully worked out which will help plant engineers in evaluating new boilers or making modifications to existing boiler components without assistance from boiler suppliers. The book examines recent trends and developments in boiler design and technology and presents novel ideas for improving boiler efficiency and lowering gas pressure drop. It helps plant engineers understand and evaluate the performance of steam generators and waste heat boilers at any load. Learn How to Independently Evaluate the Thermal Performance of Boilers and Their Components This book begins with basic combustion and boiler efficiency calculations. It then moves on to estimation of furnace exit gas temperature (FEGT), furnace duty, view factors, heat flux, and boiler circulation calculations. It also describes trends in large steam generator designs such as multiple-module; elevated drum design types of boilers such as D, O, and A; and forced circulation steam generators. It illustrates various options to improve boiler efficiency and lower operating costs. The author addresses the importance of flue gas analysis, fire tube versus water tube boilers used in chemical plants, and refineries. In addition, he describes cogeneration systems; heat recovery in sulfur plants, hydrogen plants, and cement plants; and the effect of fouling factor on performance. The book also explains HRSG simulation process and illustrates calculations for complete performance evaluation of boilers and their components. Helps plant engineers make independent evaluations of thermal performance of boilers before purchasing them Provides numerous examples on boiler thermal performance calculations that help plant engineers develop programming codes with ease Follows the metric and SI system, and British units are shown in parentheses wherever possible Includes calculation procedures for the basic sizing and performance evaluation of a complete steam generator or waste heat boiler system and their components with appendices outlining simplified procedures for estimation of heat transfer coefficients Steam Generators and Waste Heat Boilers: For Process and Plant Engineers serves as a source book for plant engineers, consultants, and boiler designers.

Download or read book Bulletin de L Institut International Du Froid written by and published by . This book was released on 2010 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluid Mechanics and Fluid Power Vol 3 written by Suvanjan Bhattacharyya and published by Springer Nature. This book was released on 2023-04-17 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the select proceedings of the 48th National Conference on Fluid Mechanics and Fluid Power (FMFP 2021) held at BITS Pilani in December 2021. It covers the topics such as fluid mechanics, measurement techniques in fluid flows, computational fluid dynamics, instability, transition and turbulence, fluid‐structure interaction, multiphase flows, micro- and nanoscale transport, bio-fluid mechanics, aerodynamics, turbomachinery, propulsion and power. The book will be useful for researchers and professionals interested in the broad field of mechanics.

Download or read book Engineering Optimization 2014 written by Hélder Rodrigues and published by CRC Press. This book was released on 2014-09-26 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern engineering processes and tasks are highly complex, multi- and interdisciplinary, requiring the cooperative effort of different specialists from engineering, mathematics, computer science and even social sciences. Optimization methodologies are fundamental instruments to tackle this complexity, giving the possibility to unite synergistically team members’ inputs and thus decisively contribute to solving new engineering technological challenges. With this context in mind, the main goal of Engineering Optimization 2014 is to unite engineers, applied mathematicians, computer and other applied scientists working on research, development and practical application of optimization methods applied to all engineering disciplines, in a common scientific forum to present, analyze and discuss the latest developments in this area. Engineering Optimization 2014 contains the edited papers presented at the 4th International Conference on Engineering Optimization (ENGOPT2014, Lisbon, Portugal, 8-11 September 2014). ENGOPT2014 is the fourth edition of the biennial “International Conference on Engineering Optimization”. The first conference took place in 2008 in Rio de Janeiro, the second in Lisbon in 2010 and the third in Rio de Janeiro in 2012. The contributing papers are organized around the following major themes: - Numerical Optimization Techniques - Design Optimization and Inverse Problems - Effi cient Analysis and Reanalysis Techniques - Sensitivity Analysis - Industrial Applications - Topology Optimization For Structural Static and Dynamic Failures - Optimization in Oil and Gas Industries - New Advances in Derivative-Free Optimization Methods for Engineering Optimization - Optimization Methods in Biomechanics and Biomedical Engineering - Optimization of Laminated Composite Materials - Inverse Problems in Engineering Engineering Optimization 2014 will be of great interest to engineers and academics in engineering, mathematics and computer science.

Download or read book Fundamentals of Heat Exchanger Design written by Dusan P. Sekulic and published by John Wiley & Sons. This book was released on 2023-10-24 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Heat Exchanger Design A cutting-edge update to the most essential single-volume resource on the market Heat exchangers are thermal devices which transfer heat between two or more fluids. They are integral to energy, automotive, aerospace, and myriad other technologies. The design and implementation of heat exchangers is an essential skill for engineers looking to contribute to a huge range of applications. Fundamentals of Heat Exchanger Design, Second Edition provides a comprehensive insight into the design and performance of heat exchangers. After introducing the basic heat transfer concepts and parameters, an overview of design methodologies is discussed. Subsequently, details of design theory of various types of exchangers are presented. The first edition established itself as the standard single-volume text on the subject. The second edition preserves an established in-depth approach but reflects some new technological developments related to design for manufacturing compact heat exchangers, including novel 3-D printing approaches to heat exchanger design. Readers of the second edition of Fundamentals of Heat Exchanger Design will also find: A new section on the design for manufacturing of compact heat exchangers A new section on design for additive manufacturing compact heat exchangers Detailed discussions of the design of recuperators and regenerators, pressure drop analysis, geometric parameters, heat transfer correlations, and more Fundamentals of Heat Exchanger Design is ideal for practicing engineers, as well as for advanced undergraduate and graduate students in mechanical and aerospace engineering, energy engineering, and related subjects.

Download or read book Compact Heat Exchangers and Enhancement Technology for the Process Industries written by R. K. Shah and published by Begell House Publishers. This book was released on 1999 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: The drive to minimize capital investment and improve the energy efficiency of process industry plants has led to a reassessment of the desirability and practicality of incorporating compact heat exchangers (CHEs) and heat transfer enhancement technology into process plants. This volume collects papers presented at the International Conference on Compact Heat Exchangers for the Process Industries, whose objectives were to exploit the existing forms of the CHEs and enhancement technology with their potential use and benefits, to identify new forms of the CHEs and enhancement technology, and to identify and discuss barriers and critical issues preventing the broader use of CHEs and enhancement technology.

Download or read book Handbook of Heat Exchanger Fouling written by Hans Müller-Steinhagen and published by IChemE. This book was released on 2000 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook presents the most important technologies concerning the reduction of fouling in heat exchangers and the appropriate technologies of removal and cleaning. The general and scientific fundamentals of heat transfer are also explained.