Hairpin Heat Exchangers Explained
Fundamentals of Double-Pipe, Multi-Tube and Finned Tube Heat Exchangers
Description:... The design of heat exchangers is crucial for the efficiency usage of energy in cooling or heating operations of industrial processes. The inappropriate heat exchanger sizing and analysis may cause environmental damage and significant energy waste in chemical process and power plants. This text covers the thermal-hydraulic design and performance rating of single-phase tubular (hairpin) heat exchangers of several types, including double-pipe, multi-tubes and finned heat exchangers. It presents a detailed compilation of single-phase convective and friction factor correlations established in the technical literature and by industrial practice, with special attention to their validity ranges and limiting assumptions to promote the most appropriate selection according to the specific design requirements. Highlighted features in this volume: - Several worked examples explained step by step. - A method for estimating the inner and outer wall temperatures on thick tubes. - Special equations for estimating fluid exit temperatures in parallel flow and counterflow arrangements. - A new method for estimating the pressure drop in double-pipe and multi-tube heat exchangers. - Detailed fact sheet tables for most equations for estimating heat transfer coefficients, including errors bands. - A number of proposed design problems, including the final answers. - Graphs of physical properties of several gases and dozens of chemical components in liquid and vapor phase. - Physical properties given both in SI and US-customary unit systems. The content is discussed with focus on the undergraduate student. Every effort was applied in order to clarify the presented subjects, both by balancing the level of description and the material format, yet preserving the technical accuracy. Accordingly, it is targeted to facilitate the learning process and understanding of the student challenged with the subject of heat exchanger in chemical engineering, mechanical engineering, and other related engineering fields. The chapters contain a number of worked examples demonstrating the application of the presented design methods and procedures carefully. The student is guided during the decision-making stages involved in the heat exchanger design. An extensive nomenclature section is given in the beginning of the text to allow easy access during the reading. A set of problems at the end of the chapters allows the students to train and reinforce their skills about the learned subjects. Almost every problem is supplemented with the respective answers, in order to enable prompt verification of the student development. With the aim of being a self-sufficient volume, and optimize the student time while learning the subject matter, the appendices provide standard piping design data compiled from heat exchanger manufacturers. In addition, a comprehensive dataset of physical properties is given for several fluids, both in SI and US-customary units.
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