Download or read book Heat Transfer Enhancement Techniques With Special Attention to Passive Methods of Heat Transfer Enhancement written by Chakole M.M. and published by Anchor Academic Publishing. This book was released on 2016-06-02 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat exchangers are widely used in the industrial sector, e.g. in the refrigeration, air conditioning, petrochemical, and agricultural food industry. The high cost of energy and material has resulted in an increased effort aimed at producing high performance heat exchanger equipment. Passive methods of heat transfer enhancement do not need external power for enhancement. One of these kinds of passive technique is twisted tape inserts that enhance the performance of heat exchangers. Using multiple twisted tape inserts gives better enhancement than a single twisted tape insert. Using nanofluid gives also better thermal performance than water. Therefore, nanofluid along with twisted tape inserts was used in this study. For this study, different combinations of multiple twisted tape inserts were designed and fabricated. These different combinations contain dual, triple, and quadruple twisted tapes. Directions of twists are also varied which enables to study the effect of different swirl flow generators. Nanofluid is used with various volume concentrations of 0.07%, 0.14% and 0.21% in order to investigate the effect of nanoparticle concentration on heat transfer enhancement. Experimental investigation was carried out by having a constant heat flux condition and by varying the volume flow rate of flow from 2 to 10 lpm.
Download or read book Advances in Heat Transfer Enhancement written by Sujoy Kumar Saha and published by Springer. This book was released on 2016-05-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Brief addresses the phenomena of heat transfer enhancement. A companion edition in the SpringerBrief Subseries on Thermal Engineering and Applied Science to three other monographs including “Critical Heat Flux in Flow Boiling in Microchannels,” this volume is idea for professionals, researchers, and graduate students concerned with electronic cooling.
Download or read book Introduction to Enhanced Heat Transfer written by Sujoy Kumar Saha and published by Springer. This book was released on 2019-06-29 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Brief stands as a primer for heat transfer fundamentals in heat transfer enhancement devices, the definition of heat transfer area, passive and active enhancement techniques and their potential and benefits and commercial applications. It further examines techniques and modes of heat transfer like single-phase flow and two-phase flow, natural and forced convection, radiation heat transfer and convective mass transfer.
Download or read book Heat Transfer Enhancement Techniques written by Ashwani Kumar and published by Wiley. This book was released on 2024-09-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Transfer written by Hafiz Muhammad Ali and published by BoD – Books on Demand. This book was released on 2024-02-14 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat Transfer - Advances in Fundamentals and Applications explores new knowledge in the domain of fundamental and applied advances in heat transfer. This book specifically emphasizes advanced topics of heat transfer. Professionals, researchers, and academics working in various areas of heat transfer will find this a useful reference for finding new solutions to heat transfer problems. The book is organized into two sections on the fundamental advances in heat transfer and advances in applications of heat transfer. Chapters address inverse conduction problems, heat transfer enhancement during internal flows, shell-and-tube heat exchangers, heat transfer mechanisms in petroleum and geothermal wellbores, and other topics in the field.
Download or read book Advances in Heat Transfer Augmentation Techniques in Single Phase Flows written by Varun Goel and published by CRC Press. This book was released on 2024-01-26 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Augmentation of heat transfer is important in energy conservation and developing sustainable energy systems. This book provides the science necessary to understand the basics of heat transfer augmentation in single-phase engineering systems. It considers theory and practice including computational and experimental procedures, evaluation techniques for performance, and new trends. Several applications of augmentation methods like surface modification, introduction of vortex flow and impinging jets, opportunities of ultrasound and magnetic fields, pulsatile flows, heat exchangers, and nanofluids are provided. Details of basic phenomena and mechanisms are highlighted. Key features: Provides the fundamental science needed to understand and further develop heat transfer augmentation for future energy systems Give examples of how ultrasound and magnetic fields, vortex flow, impinging jets, surface modification and nanofluids can augment heat transfer Considers basic issues of computational and experimental methods for analysis, design, and evaluation of efficient and sustainable heat transfer It is an ideal reference text for graduate students and academic researchers working in the fields of mechanical, aerospace, industrial, manufacturing, and chemical engineering.
Download or read book A Review of Heat Transfer Enhancement Methods Using Coiled Wire and Twisted Tape Inserts written by Orhan Keklikcioglu and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat transfer enhancement is categorized into passive and active methods. Active methods need external power to input the process; in contrast, passive methods do not require any additional energy to improve the thermohydraulic performance of the system. Passive methods are widely used in both experimental and numerical applications when investigating heat transfer enhancement and friction losses to save energy and costs. The many passive methods for increasing heat transfer rate include various components located in the fluid flow path, such as twisted tapes, coiled or tangled wires, and nozzle turbulators. The present paper represents a comprehensive review that focused on heat transfer enhancement methods with coiled wire and twisted tape inserts since the installation of inserts is easier and more economical. The thermodynamic performance of heat exchange components is also affected by the flow conditions such as laminar or turbulence. The present review comprises investigations on the enhancement of heat transfer using twisted tape and coiled wire inserts in laminar and turbulent flow region.
Download or read book Experimental Investigation of Passive Flow Destabilization and Heat Transfer Enhancement in Grooved Channels written by Ruey-Feng Chen and published by . This book was released on 1993 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Two Phase Heat Transfer Enhancement written by Sujoy Kumar Saha and published by Springer. This book was released on 2019-07-04 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 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.
Download or read book Process Enhanced and Multiphase Heat Transfer written by A. E. Bergles and published by Begel House. This book was released on 1996-01-01 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers included in this volume span the areas of heat transfer where Professor Bergles has made seminal contributions--heat transfer enhancement, pool and forced convective boiling, cooling of electronic and microelectronic devices, single phase forced convection, and process heat transfer. Professor Bergles has been one of the foremost articulators of the need for careful experimentation, appropriate numerical computing, and frequent interactions among various constituencies to achieve progress in the field of heat transfer.
Download or read book Electric Fields Additives and Simultaneous Heat and Mass Transfer in Heat Transfer Enhancement written by Sujoy Kumar Saha and published by Springer. This book was released on 2019-07-18 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Brief deals with electrode design and placement, enhancement of both liquid and gas flow, vapor space condensation, in-tube condensation, falling film evaporation, correlations. It further provides a fundamental understanding of boiling and condensation, pool boiling, critical heat flux, convective vaporization, additives for single-phase liquids like solid particles, gas bubbles, suspensions in dilute polymer and surfactant solutions, solid additives and liquid additives for gases, additives for boiling, condensation and absorption, mass transfer resistance in gas phase (condensation with noncondensible gases, evaporation into air, dehumidifying finned tube heat exchangers, water film enhancement of finned tube exchanger), controlling resistance in liquid phase, and significant resistance in both phases. The volume is ideal for professionals and researchers dealing with thermal management in devices.
Download or read book Advances in Heat Transfer Enhancement written by Omid Mahian and published by . This book was released on 2019 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applications of Heat Transfer Enhancement Techniques written by Suvanjan Bhattacharyya and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fundamentals of heat transfer and its applications, the classification of heat transfer technology and different heat transfer techniques, and the needs for augmentation and its benefits and the different combinations of two or more inserts and integral roughness elements for heat transfer augmentation purpose have been introduced and discussed in this chapter. It is shown that most of the compound techniques performed better than the individual inserts for heat transfer enhancement. This chapter has also been dedicated to understanding the basic concepts of vortex generators for heat transfer enhancement in plate-fin heat exchangers. The performance of transverse, longitudinal, and wing-type vortex generators has been discussed as well.
Download or read book Use of Heat Transfer Enhancement Techniques in the Design of Heat Exchangers written by Martín Picón-Núñez and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat transfer enhancement refers to application of basic concepts of heat transfer processes to improve the rate of heat removal or deposition on a surface. In the flow of a clean fluid through the tube of a heat exchanger, the boundary layer theorem establishes that a laminar sublayer exists where the fluid velocity is minimal. Heat transfer through this stagnant layer is mainly dominated by thermal conduction, becoming the major resistance to heat transfer. From an engineering point of view, heat transfer can be enhanced if this stagnant layer is partially removed or eliminated. In single-phase heat transfer processes, three options are available to increase the heat transfer rate. One of them is the choice of smaller free flow sectional area for increased fluid velocity bringing about a reduction of the thickness of the laminar sublayer. A second option is the engineering of new surfaces which cause increased local turbulence, and the third option consists in the use of mechanical inserts that promote local turbulence. The application of these alternatives is limited by the pressure drop. This chapter describes the concept of heat transfer enhancement and the ways it is applied to the development of new heat exchanger technology.
Download or read book Heat Transfer Enhancement by Rotating Inserts in Tubular Heat Exchangers from Ocean Thermal Energy Conversion Systems written by Franz Georg Glasl and published by . This book was released on 1979 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developments in Heat Transfer written by Marco Aurelio Dos Santos Bernardes and published by IntechOpen. This book was released on 2011-09-15 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises heat transfer fundamental concepts and modes (specifically conduction, convection and radiation), bioheat, entransy theory development, micro heat transfer, high temperature applications, turbulent shear flows, mass transfer, heat pipes, design optimization, medical therapies, fiber-optics, heat transfer in surfactant solutions, landmine detection, heat exchangers, radiant floor, packed bed thermal storage systems, inverse space marching method, heat transfer in short slot ducts, freezing an drying mechanisms, variable property effects in heat transfer, heat transfer in electronics and process industries, fission-track thermochronology, combustion, heat transfer in liquid metal flows, human comfort in underground mining, heat transfer on electrical discharge machining and mixing convection. The experimental and theoretical investigations, assessment and enhancement techniques illustrated here aspire to be useful for many researchers, scientists, engineers and graduate students.
Download or read book Advances in Heat Transfer Enhancement written by Omid Mahian and published by . This book was released on 2019 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt:
