3. Heat transfer enhancement technologies for improving heat exchanger performance
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Martín Picón-Núñez
Abstract
The enhancement of heat transfer consists of the augmentation of the rate of heat transfer to achieve a fixed heat duty in a smaller surface area within the limitations of pressure drop. The main feature of a suitable application is characterized by the maximization of the heat transfer with a minimum increase of pressure drop. Broadly speaking, heat transfer can be enhanced via the increase of fluid velocity, using new heat transfer surfaces or using turbulence promoters. This chapter describes each of these alternatives. It starts by analyzing the fundamental principles of single-phase heat transfer and the relation between velocity, heat transfer coefficient, and pressure drop. Next, the advent of new and compact heat transfer technologies is discussed, then the use of turbulence promoters and their thermohydraulic performance is covered. Finally, the extension to heat recovery networks and the application to multistream heat exchanger technology is described.
Abstract
The enhancement of heat transfer consists of the augmentation of the rate of heat transfer to achieve a fixed heat duty in a smaller surface area within the limitations of pressure drop. The main feature of a suitable application is characterized by the maximization of the heat transfer with a minimum increase of pressure drop. Broadly speaking, heat transfer can be enhanced via the increase of fluid velocity, using new heat transfer surfaces or using turbulence promoters. This chapter describes each of these alternatives. It starts by analyzing the fundamental principles of single-phase heat transfer and the relation between velocity, heat transfer coefficient, and pressure drop. Next, the advent of new and compact heat transfer technologies is discussed, then the use of turbulence promoters and their thermohydraulic performance is covered. Finally, the extension to heat recovery networks and the application to multistream heat exchanger technology is described.
Kapitel in diesem Buch
- Frontmatter I
- Contents V
- List of contributors XIII
- 1. Generalities about process intensification 1
- 2. Microreactors: Design methodologies, technology evolution, and applications to biofuels production 15
- 3. Heat transfer enhancement technologies for improving heat exchanger performance 51
- 4. Reactive absorption of carbon dioxide: Modeling insights 79
- 5. Optimal design methodology for homogeneous azeotropic distillation columns 125
- 6. Graphical tools for designing intensified distillation processes: Methods and applications 145
- 7. Optimization methodologies for intensified distillation processes with flexible heat integration networks 181
- 8. Conception, design, and development of intensified hybrid-bioprocesses 211
- 9. Design of hybrid distillation and vapor permeation or pervaporation systems 243
- 10. Lignocellulosic biofuels process synthesis and intensification: Superstructure-based methodology 277
- Index 327
Kapitel in diesem Buch
- Frontmatter I
- Contents V
- List of contributors XIII
- 1. Generalities about process intensification 1
- 2. Microreactors: Design methodologies, technology evolution, and applications to biofuels production 15
- 3. Heat transfer enhancement technologies for improving heat exchanger performance 51
- 4. Reactive absorption of carbon dioxide: Modeling insights 79
- 5. Optimal design methodology for homogeneous azeotropic distillation columns 125
- 6. Graphical tools for designing intensified distillation processes: Methods and applications 145
- 7. Optimization methodologies for intensified distillation processes with flexible heat integration networks 181
- 8. Conception, design, and development of intensified hybrid-bioprocesses 211
- 9. Design of hybrid distillation and vapor permeation or pervaporation systems 243
- 10. Lignocellulosic biofuels process synthesis and intensification: Superstructure-based methodology 277
- Index 327
