Download or read book Experimental Evaluation of Heat Flow Through Staggered Pin Fin Array by Forced Convection written by Nicholson Anak Jambok and published by . This book was released on 2012 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental evaluation of heat flow through staggered pin fin array by forced convection was set up in the thermodynamics laboratory for purpose of thesis study. All the main parameters that can significantly influence the heat transfer performance of staggered pin fin arrays have been examined thoroughly. An experimental set-up was designed to study the heat transfer performance inside the duct channel. The material is used in laboratory is called mild steel and its fins assembly with the plate heater. The pin fins was cylindrical in shape. The total number of fin was 23 fins attached on the base of the plate heater. The length of the fin was 12 cm with the diameter of 1 cm. The base area covered 9.5 cm x 9.3 cm. The transverse pitch, longitudinal pitch, and the diagonal pitch were 2cm, 2cm, and 1.5 cm respectively. Air was used as a working fluid in the experiment. Reynolds Number, Nusselt Number, and the Prandtl Number are the equations that use in heat transfer calculation. The result of findings will be taken into further experimentation through some critical results, discussion and conclusion.
Download or read book Experimental Evaluation of Heat Flow from Rectangular Fins Array Under Forced Convection written by Shahrizal Ibrahim and published by . This book was released on 2012 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of fins is to reduce heat from an object. The experiment is about utilizing the fins for heat dissipation. The method is by using an experimental set-up to observe temperature difference of 6 arrays of rectangular fins and calculate the Nusselt number to understand the convection force of the fins and validate the data with theoretical calculation from the experimental result. Second approaches are by wrapping each of the fins with aluminum coil and compare the result with experimental result without the wrap. Conclusion, it is observed that the highest value for the Nusselt number is 505.469 can be achieved by the wrapped fins array than without wrap on fins about 39.347 which is about 8.44% positive increment. Further research can be done through used of custom made fins in shape of aerofoil, which perhaps help in heat dissipation of the fins much better as the air flow is much smoother.
Download or read book Stagerred dropped and circular Pin Fins in 1D and 2D forced convection written by Nishigandh Gorade and published by GRIN Verlag. This book was released on 2023-10-17 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master's Thesis from the year 2018 in the subject Engineering - Mechanical Engineering, grade: 7.38, Savitribai Phule Pune University, formerly University of Pune (D.Y Patil School of Engineering), course: Master of Engineering, language: English, abstract: In this experimental analysis of heat transfer variation and its enhancement of the dropped and circular shapes, staggered pin fin heat sink under constant heat flux condition are presented through a conducted experimental comparison between aluminium, stainless steel and iron materials with circular and dropped shaped pin fins. A pin fin is fabricated from heat sink aluminium (Aluminium-Magnesium-Silicon Alloy), Stainless steel and ferrous material with a diameter of 10 mm. The Base plate is also same material and fins are mounted on a base plate with the help of a thread. Various trials were conducted on each material for choosing the best materials for more heat transfer. Also, to choose which is the best shape of pin fins i.e. circular or dropped for enhancing maximum heat transfer. Also, trials were conducted to find out from forced convection from 2D or 1D which is more capable to transferring heat transfer and therefore to choose the best flow of heat transfer model. The total comparison between circular and dropped shaped pin fins was performed in this experimental analysis. Finally the results were validated by using ANSYS R14.5 simulation tool.
Download or read book Determination of Free and Forced Convection Heta Transfer from Fin Arrays of Different Spacing written by Mohd Khalis Aizat Abd Aziz and published by . This book was released on 2012 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study is about analysis of free and forced convection condition for specimen with fin and without fin. Fin is an extended surface that dissipates heat from or to the environment. Three specimens tested where one for without fin and another two are without the fin. The specimens are vertical plate, finned plate and circular staggered fins. The experiment starts with the free convection approaches which selected the five different power supplies to the chamber. Followed by the forced convection where two power selected which lower and higher power. Forced convection is about the assist by air or fluid. So, air is chosen then regulates five different speed of fan. Collect the temperature data from reading at the inlet, outlet and the wall temperature. Stops until the reading become constant at all taken point. Analysis of free convection starts with finding the Rayleigh number and Nusselt number using the air properties of film temperature. Then the theoretical and experimental heat transfer coefficient and amount of heat transfer can be determined. Coefficient for with fin specimen is higher than without fin specimen and the amount of heat transfer for specimen with fin is higher compare with the specimen without fin. Number fins increase will result the higher amount heat transfer. For forced convection is a bit different than the free convection manner that air is used, so the boundary layer should be estimate first by using the Renoylds number equation to determine either laminar or turbulent flow. Go after is Nusselt number calculation affected the value of theoretical heat transfer coefficient. For the experimental value is determined by using the power supplied value. Because of air, heat transfer energy by the energy exists as well the amount of heat flux. Circular staggered fins (with fin specimen) scored the highest value of coefficient heat transfer. The circular staggered fins also obtained the higher heat transfer amount due to the large surface area and the greater temperature difference. The experimental value for coefficient obtained no longer the same with the theoretical value because slight error will occur during the testing. The heat transfer also will be enhance with the increasing the velocity and sustain the flow to turbulent or transition for the forced convection case study. The higher of power supplied affecting the higher value of the heat transfer. Circular staggered cylinder fins mostly achieved the higher result for coefficient and the amount heat transfer rather than the other two specimens.
Download or read book Study of Fluid Flow and Heat Over a Shielded Fins Array written by Mohamed Lotfy Elsayed Abdelkareem and published by LAP Lambert Academic Publishing. This book was released on 2014-11-14 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: In electronic cooling, the generated heat may be rejected via air, water, or phase change materials. The inherent advantages of air cooling systems such as simplicity, reliability, and low cost have led to the widespread use of heat sinks in the thermal management of high power microprocessors. Among the different designs of the commonly used heat sinks are the finned- plate heat sinks. The choice of an optimum finned- plate heat sink depends on various geometrical parameters such as fin height, fin length, fin thickness, number of fins, base plate thickness, space between fins, fin shape or profile and fin material.This work aims to assess the performance of a finned- plate heat sink subjected to cross flow forced convection in presence of as well as in absence a shield, both numerically and experimentally. In the numerical treatment, CFD FLUENT was used to solve conservation equations of mass, momentum, and energy of the flow over the heat sink. In the experimental part, plate heat sinks were CNC manufactured from aluminum alloy 2017 and then tested. A test rig was composed basically from a suction-type wind tunnel. Temperature and pressure drop were measured experimental
Download or read book Fin Shape Thermal Optimization Using Bejan s Constuctal Theory written by Giulio Lorenzini and published by Morgan & Claypool Publishers. This book was released on 2011-01-02 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book contains research results obtained by applying Bejan's Constructal Theory to the study and therefore the optimization of fins, focusing on T-shaped and Y-shaped ones. Heat transfer from finned surfaces is an example of combined heat transfer natural or forced convection on the external parts of the fin, and conducting along the fin. Fin's heat exchange is rather complex, because of variation of both temperature along the fin and convective heat transfer coefficient. Furthermore possible presence of more fins invested by the same fluid flow has to be considered. Classical fin theory tried to reduce the coupled heat transfer problem to a one-dimensional problem by defining an average temperature of the fin and writing equations using this parameter. However, it was shown that this approach cannot be used because of the effects of two-dimensional heat transfer, especially in the presence of short fins. CFD codes offer the possibility to consider bi-dimensional (and more generally, three-dimensional) effects and then a more real approach to the physic phenomena of finned surface's heat exchange. A commercial CFD code was used to analyse the case of heat exchange in presence of T-shaped fins, following an approach suggested by Bejan's Constructal Theory. The comparative results showed a significant agreement with previous research taken as a reference, and this result allows for the application of this approach to a wider range of systems. T-shaped optimized fin geometry is the starting point for further research. Starting from the optimal results (T-shape optimized fins), we show the trend of the assessment parameter (the dimensionless conductance) in function of the angle α between the two horizontal arms of the fin. A value for α, 90°
Download or read book Temperature Distribution and Heat Flow in Cylindrical Fin with Heat Source written by Mohamad Azman Poniran and published by . This book was released on 2012 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fin is used to increase heat transfer from heated surface to air. Industrial experience has shown that for same surface area, the fin array can transfer considerably more energy than single fin. Analysis of single fin is well known. However, when fins are placed in an arrangement, the convective patterns become consistent and the resulting heat transfer coefficient has not been predicted. The purpose of this project is to study the effectiveness of staggered cylindrical fin array with and without additional fin. Experimental data from the study is used to obtain the resulting heat transfer coefficient. The experimental study has been carried out through experiment by natural convection using test bench. The additional fin made from aluminum and fabricated in plate shape first before attach with staggered cylindrical array. From the measurement and experiment result, it shows the value of heat transfer coefficient for cylindrical array with additional fin is higher more than fifty percent compare to without additional fin. The relation of Nusselt number with heat transfer has been shown through the experimental result. The experimental result indicates that a staggered cylindrical fin array with additional fin performs better in heat transfer than staggered cylindrical fin array without additional fin. It showed that the additional fin affect the heat transfer much.
Download or read book Recent Advances in Thermofluids and Manufacturing Engineering written by Shripad Revankar and published by Springer Nature. This book was released on 2022-09-30 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the select proceedings of the International Conference on Thermofluids and Manufacturing Science (ICTMS 2022). Some of the topics covered include Heat transfer, fluid dynamics, multiphase flow, flow diagnostics using artificial neural network, aerodynamics, high-speed flows, sustainable energy technology, propulsion and emissions, Eco-friendly manufacturing, Coating Techniques and Supply chain management etc. Given the scope, the book will be highly useful for researchers and professionals interested in mechanical, production or aerospace engineering
Download or read book Optimum Cooling of Data Centers written by Jun Dai and published by Springer Science & Business Media. This book was released on 2013-11-20 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the use of free air cooling to improve the efficiency of, and cooling of, equipment for use in telecom infrastructures. Discussed at length is the cooling of communication installation rooms such as data centers or base stations, and this is intended as a valuable tool for the people designing and manufacturing key parts of communication networks. This book provides an introduction to current cooling methods used for energy reduction, and also compares present cooling methods in use in the field. The qualification methods and standard reliability assessments are reviewed, and their inability to assess the risks of free air cooling is discussed. The method of identifying the risks associated with free air cooling on equipment performance and reliability is introduced. A novel method of assessment for free air cooling is also proposed that utilizes prognostics and health management (PHM). This book also: Describes how the implementation of free air cooling can save energy for cooling within the telecommunications infrastructure. Analyzes the potential risks and failures of mechanisms possible in the implementation of free air cooling, which benefits manufacturers and equipment designers. Presents prognostics-based assessments to identify and mitigate the risks of telecommunications equipment under free air cooling conditions, which can provide the early warning of equipment failures at operation stage without disturbing the data centers' service. Optimum Cooling for Data Centers is an ideal book for researchers and engineers interested in designing and manufacturing equipment for use in telecom infrastructures.
Download or read book Two Phase Heat Transfer written by Mirza Mohammed Shah and published by John Wiley & Sons. This book was released on 2021-02-10 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to two-phase heat transfer theory, practice, and applications Designed primarily as a practical resource for design and development engineers, Two-Phase Heat Transfer contains the theories and methods of two-phase heat transfer that are solution oriented. Written in a clear and concise manner, the book includes information on physical phenomena, experimental data, theoretical solutions, and empirical correlations. A very wide range of real-world applications and formulas/correlations for them are presented. The two-phase heat transfer systems covered in the book include boiling, condensation, gas-liquid mixtures, and gas-solid mixtures. The author—a noted expert in this field—also reviews the numerous applications of two-phase heat transfer such as heat exchangers in refrigeration and air conditioning, conventional and nuclear power generation, solar power plants, aeronautics, chemical processes, petroleum industry, and more. Special attention is given to heat exchangers using mini-channels which are being increasingly used in a variety of applications. This important book: Offers a practical guide to two-phase heat transfer Includes clear guidance for design professionals by identifying the best available predictive techniques Reviews the extensive literature on heat transfer in two-phase systems Presents information to aid in the design and analysis of heat exchangers. Written for students and research, design, and development engineers, Two-Phase Heat Transfer is a comprehensive volume that covers the theory, methods, and applications of two-phase heat transfer.
Download or read book Forced Convection Heat Transfer from Pin Fin Arrays written by Vinod Kumar Maudgal and published by . This book was released on 1992 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Convective Heat Transfer from Arrays of Modules with Non uniform Heating written by Ann M. Anderson and published by . This book was released on 1990 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study of Endwall Heat Transfer Enhancement for Flow Past Staggered Non conducting Pin Fin Arrays written by Vamsee Satish Achanta and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, we study the enhanced endwall heat transfer for flow past non conducting pin fin arrays. The aim is to resolve the controversy over the heat transfer that is taking place from the endwall and the pin surface. Various parameters were studied and results were obtained. Our results are found to be consistent with some of the results that have been previously published. The results were surprisingly found to be dependent on the height of the pin fin.
Download or read book Heat Transfer written by Adrian Bejan and published by John Wiley & Sons. This book was released on 2022-04-05 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: HEAT TRANSFER Provides authoritative coverage of the fundamentals of heat transfer, written by one of the most cited authors in all of Engineering Heat Transfer presents the fundamentals of the generation, use, conversion, and exchange of heat between physical systems. A pioneer in establishing heat transfer as a pillar of the modern thermal sciences, Professor Adrian Bejan presents the fundamental concepts and problem-solving methods of the discipline, predicts the evolution of heat transfer configurations, the principles of thermodynamics, and more. Building upon his classic 1993 book Heat Transfer, the author maintains his straightforward scientific approach to teaching essential developments such as Fourier conduction, fins, boundary layer theory, duct flow, scale analysis, and the structure of turbulence. In this new volume, Bejan explores topics and research developments that have emerged during the past decade, including the designing of convective flow and heat and mass transfer, the crucial relationship between configuration and performance, and new populations of configurations such as tapered ducts, plates with multi-scale features, and dendritic fins. Heat Transfer: Evolution, Design and Performance: Covers thermodynamics principles and establishes performance and evolution as fundamental concepts in thermal sciences Demonstrates how principles of physics predict a future with economies of scale, multi-scale design, vascularization, and hierarchical distribution of many small features Explores new work on conduction architecture, convection with nanofluids, boiling and condensation on designed surfaces, and resonance of natural circulation in enclosures Includes numerous examples, problems with solutions, and access to a companion website Heat Transfer: Evolution, Design and Performance is essential reading for undergraduate and graduate students in mechanical and chemical engineering, and for all engineers, physicists, biologists, and earth scientists.
Download or read book Advances in Computational Heat and Mass Transfer written by Ali Cemal Benim and published by Springer Nature. This book was released on with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ITHERM written by and published by . This book was released on 2002 with total page 1150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Transfer Enhancement in Plate and Fin Extended Surfaces written by Sujoy Kumar Saha and published by Springer. This book was released on 2019-06-24 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Brief deals with heat transfer and friction in plate and fin extended heat transfer enhancement surfaces. It examines Offset-Strip Fin (OSF), Enhancement Principle, Analytically Based Models for j and f vs. Re, Transition from Laminar to Turbulent Region, Correlations for j and f vs. Re, Use of OSF with Liquids, Effect of Percent Fin Offset, Effect of Burred Edges, Louver fin, heat transfer and friction correlations, flow structure in the louver fin array, analytical model for heat transfer and friction, convex louver fin, wavy fin, 3D corrugated fin, perforated fin, pin fins and wire mesh, types of vortex generators, metal foam fin, plain fin, packings, numerical simulation of various types of fins.
