Heat Transfer Enhancement Techniques (eBook)

Thermal Performance, Optimization and Applications

Ashwani Kumar, Nitesh Dutt, Mukesh Kumar Awasthi (Herausgeber)

eBook Download: EPUB

2024
663 Seiten
Wiley-Scrivener (Verlag)
978-1-394-27097-2 (ISBN)

Infos

This comprehensive guide explores the latest heat transfer enhancement techniques and provides the knowledge and insights required to tackle present and future challenges associated with heat dissipation, making it an essential resource for researchers, engineers, and professionals in the field.

In today's rapidly evolving world, where technological advancements are driving industries forward, the need for innovative solutions for heat transfer and dissipation challenges is becoming increasingly critical. This book serves as a comprehensive guide that explores the latest heat transfer enhancement techniques and their potential to inspire the development of new devices and technologies. By delving into this subject matter, the book aims to empower researchers, engineers, and professionals in the field with the knowledge and insights required to tackle the present and future challenges associated with heat dissipation. It provides a roadmap for pushing the boundaries of traditional thinking and fostering innovation in the field.

Heat Transfer Enhancement Techniques: Thermal Performance, Optimization and Applications will be helpful to readers in presenting the basic and advanced technological developments of heat transfer enhancement techniques. Each chapter will cover a specific problem with future scope to further extend this research. This book contains new methodologies, models, techniques, and applications, as well as fundamental knowledge of heat transfer techniques.

Ashwani Kumar, PhD is a senior lecturer teaching mechanical engineering in the Technical Education Department at Uttar Pradesh, Kanpur, India. He has more than 13 years of research, academic, and administrative experience and serves as a guest editor and editorial board member for eight international journals, as well as a review board member for 20 international journals. Being an academician and researcher, he has authored four book series, authored or co-authored over 30 books, and published over 100 research articles and two patents.

Nitesh Dutt, PhD is an assistant professor in the Department of Mechanical Engineering, College of Engineering Roorkee, Uttarakhand, India. He has more than seven years of teaching experience. and has published more than 11 research articles in international journals and conferences. His main areas of research include nuclear engineering, heat and mass transfer, thermodynamics, fluid mechanics, refrigeration and air conditioning, and computational fluid dynamics.

Mukesh Kumar Awasthi, PhD is an assistant professor in the Department of Mathematics at Babasaheb Bhimrao Ambedkar University, Lucknow. He has published more than 115 research publications across various mediums, including national and international journals and conferences, as well as eight books. In addition to attending many symposia, workshops, and conferences in mathematics and fluid mechanics, he has received funding for a project researching a nonlinear study of the interface in a multilayer fluid system.

Textauszug

1
Recent Innovation in Heat Transfer Enhancement Techniques

Ashwani Kumar1*, Mukesh Kumar Awasthi2, Nitesh Dutt3 and Varun Pratap Singh4,5

1Department of Mechanical Engineering, Technical Education Department, Uttar Pradesh, Kanpur, India

2Department of Mathematics, Babasaheb Bhimarao Ambedkar University, Lucknow, India

3Department of Mechanical Engineering, COER University, Roorkee Uttarakhand, India

4Solar Thermal Energy Research Group (STERG), Department of Mechanical Engineering and Mechatronics Engineering, University of Stellenbosch, Stellenbosch, South Africa

5Department of Mechanical Engineering, School of Advanced Engineering, UPES, Bidholi, Dehradun, Uttarakhand, India

Abstract

Heat transfer plays a critical role in various industrial processes, electronic cooling systems, battery thermal management and renewable energy applications. In recent years, significant strides have been made in the field of heat transfer enhancement techniques to improve efficiency and optimize thermal management. This abstract provides a concise overview of the recent advancements in heat transfer enhancement methods, encompassing both experimental and computational approaches. Innovative materials, such as advanced nanomaterials and metamaterials, have emerged as key contributors to enhanced heat transfer. Nanofluids, which consist of nanoparticles dispersed in traditional heat transfer fluids, exhibit improved thermal conductivity, leading to more efficient heat transfer in various applications. Additionally, the design and fabrication of structured surfaces with micro and nano-scale features, known as surface modifications, have proven effective in augmenting convective heat transfer. Additive manufacturing technologies have revolutionized the fabrication of intricate heat exchanger geometries, offering a high degree of customization and geometric complexity. This has led to the creation of compact and efficient heat exchangers with improved thermal performance. The integration of artificial intelligence and machine learning algorithms in heat transfer research has opened new avenues for optimization and control. These technologies enable the development of intelligent thermal management systems capable of adapting to dynamic operating conditions, thereby enhancing overall system efficiency. Integration of novel materials, innovative surface modifications, advanced computational simulations, additive manufacturing, and the incorporation of artificial intelligence plays a crucial role in heat transport enhancement.

Keywords: Heat transfer, innovative techniques, artificial intelligence, advance materials, heat exchangers

1.1 Introduction

Heat transfer is a fundamental process that plays a crucial role in the exchange of thermal energy between systems and their surroundings. Three distinct mechanisms govern heat transfer: conduction, convection, and radiation. Each method operates in unique ways, influencing the transfer of heat through different mediums and under diverse conditions. Understanding these mechanisms is essential for comprehending the thermal behavior of materials and systems in various environments, paving the way for advancements in fields such as engineering, physics, and materials science. Figures 1.1 and 1.2 show brief descriptions of methods of heat transfer. Table 1.1 highlights the factors and parameters that collectively contribute to the effectiveness of heat transport enhancement in various applications such as cooling systems, heat exchangers, and thermal management devices.

Figure 1.1 Methods of heat transfer.

Figure 1.2 Classifications of heat transfer methods [1–3].

Conduction, convection, and radiation are three fundamental methods of heat transfer. Conduction involves the direct transfer of heat through a material, typically a solid, by the collision of particles. In convection, heat is transferred through the movement of fluid (liquid or gas) particles, creating a cycle of warmer and cooler regions. This method is commonly observed in fluids where warmer portions rise and cooler portions sink, establishing a continuous circulation. Radiation, on the other hand, is the transfer of heat through electromagnetic waves that can propagate through a vacuum. Unlike conduction and convection, radiation does not require a medium and can occur in the absence of material substance. These three methods are crucial in various scientific and engineering applications, ranging from designing efficient heat exchangers to explaining the thermal dynamics of natural phenomena [1, 2].

1.1.1 Industrial Application of Heat Transfer Enhancement Techniques

Table 1.2 and Figure 1.3 highlight the key factors and different industrial applications of the heat transport enhancement techniques. Heat transfer enhancement techniques are often utilized in combination based on specific industrial requirements. Power generation, particularly in thermal power plants, the use of advanced heat exchanger designs and surfaces with enhanced thermal conductivity improves overall energy conversion efficiency. In the aerospace industry, where thermal management is critical, techniques such as finned surfaces and phase change materials aid in dissipating excess heat generated during flight. Additionally, in electronics and microelectronics manufacturing, heat transfer enhancement is vital to prevent overheating and ensure the reliability of electronic components. Furthermore, in the field of chemical processing, innovative heat exchanger configurations and materials facilitate more efficient heat transfer, reducing energy consumption and enhancing overall process productivity. Overall, the integration of heat transfer enhancement techniques is pivotal across industries, contributing to increased energy efficiency, improved system reliability, and enhanced performance in a wide range of applications.

Table 1.1 Important factors and their effect [1–4].

Important parameters	Effect

Surface area

Increased surface area improves heat transfer.

Use of extended surfaces, fins, or enhancements.

Fluid velocity

Higher fluid velocity enhances convective heat transfer.

Turbulent flow is more effective than laminar flow.

Temperature difference

Larger temperature gradients increase heat transfer.

Maintaining a large ΔT across surfaces.

Thermal conductivity

Greater thermal conductivity materials transfer heat more effectively.

Selection of materials in heat exchanger design.

Fluid properties

Heat transfer coefficient varies with fluid properties.

Consideration of specific heat, viscosity, density, etc.

Heat exchanger design

Efficient design improves heat transfer performance.

Optimization of geometry and arrangement of surfaces.

Surface roughness

Controlled roughness can enhance convective heat transfer.

Impact on boundary layer and flow characteristics.

Phase change

Latent heat transfer during phase change (e.g., boiling, condensation).

Utilizing phase change for enhanced heat transfer.

Flow regimes

Transitioning from laminar to turbulent flow enhances heat transfer.

Understanding and controlling different flow regimes.

Agitation/mixing

Stirring or mixing enhances heat transfer in fluids.

Promotes better heat distribution within the fluid.

Thermal resistance

Reducing thermal resistance in the system improves heat transfer.

Minimizing resistances in series and parallel paths.

Heat transfer fluid

Selection of appropriate fluid for the specific application.

Consideration of thermal properties and stability.

1.1.2 Standards and Regulations

International standards and regulations pertaining to heat transfer are crucial for ensuring safety, efficiency, and environmental sustainability in various industries. Organizations such as the International Organization for Standardization (ISO) play a significant role in developing and maintaining these standards. ISO 22007 establishes guidelines for determining thermal conductivity, while ISO 6946 addresses heat transfer through building elements. Some general standards and organizations that are relevant to heat transfer and related fields are listed in Table 1.3. The applicability of these standards may vary depending on the industry and specific applications.

Table 1.2 Techniques to enhance heat transfer and their industrial applications [5,...

Produkt-Details

• Erscheint lt. Verlag: 18.11.2024
• Sprache: englisch
• Themenwelt: Technik ► Maschinenbau
• ISBN-10: 1-394-27097-6 / 1394270976
• ISBN-13: 978-1-394-27097-2 / 9781394270972