This book is designed to serve senior-level engineering students taking a capstone design course in fluid and thermal systems design. It is built from the ground up with the needs and interests of practicing engineers in mind; the emphasis is on practical applications. The book begins with a discussion of design methodology, including the process of bidding to obtain a project, and project management techniques. The text continues with an introductory overview of fluid thermal systems (a pump and pumping system, a household air conditioner, a baseboard heater, a water slide, and a vacuum cleaner are among the examples given), and a review of the properties of fluids and the equations of fluid mechanics. The text then offers an in-depth discussion of piping systems, including the economics of pipe size selection. Janna examines pumps (including net positive suction head considerations) and piping systems. He provides the reader with the ability to design an entire system for moving fluids that is efficient and cost-effective. Next, the book provides a review of basic heat transfer principles, and the analysis of heat exchangers, including double pipe, shell and tube, plate and frame cross flow heat exchangers. Design considerations for these exchangers are also discussed. The text concludes with a chapter of term projects that may be undertaken by teams of students.
Dr. William S. Janna is a Professor in the Department of Mechanical Engineering at the University of Memphis. He has served as Department Chair at U of Memphis from 1987-1991. He served also as Associate Dean for Graduate Studies and Research (1999-2003). Previously, he served as Department Chair at the University of New Orleans, where he was employed from 1976 to 1987. Dr. Janna has written three textbooks, as well as several laboratory manuals. He was a member of The American Society for Engineering Education, and currently serves as web master for the Mechanical Engineering Division. He is also a member of ASME. Dr. Janna is committed to improving undergraduate engineering education, and to the sharing of information that will produce better engineers. His current research interests include flow in piping systems, heat and mass transfer from melting ice objects, flow over a sublimating flat plate, and design of fluid-thermal systems. He teaches undergraduate and graduate courses in the areas of thermodynamics, fluid mechanics, and heat transfer.
1. INTRODUCTION. The Design Process. The Bid Process. Approaches to Engineering Design. Design Project Example. Project Management. Dimensions and Units. Summary. Questions for Discussion. Show and Tell. Problems. 2. FLUID PROPERTIES AND BASIC EQUATIONS. Fluid Properties. Measurement of Viscosity. Measurement of Pressure. Basic Equations of Fluid Mechanics. Summary. Show and Tell. Problems. 3. PIPING SYSTEMS I. Pipe and Tubing Standards. Equivalent Diameter for noncircular Ducts. Equation of Motion for Flow in a Duct. Friction Factor and Pipe Roughness. Minor Losses. Series Piping Systems. Flow Through Noncircular Cross Sections. Show and Tell. Problems. 4. PIPING SYSTEMS II. The Optimization Process. Economic Pipe Diameter. Equivalent Length of Fittings. Graphical Symbols for Piping Systems. System Behavior. Measurement of Flow Rate in Closed Conduits. Support Systems for Pipes. Summary. Show and Tell. Problems. 5. SELECTED TOPICS IN FLUID MECHANICS. Flow in Pipe Networks. Pipes in Parallel. Measurement of Flow Rate in Closed Conduits. The Unsteady Draining Tank Problem. Summary. Show and Tell. Problems. 6. PUMPS AND PIPING SYSTEMS. Types of Pumps. Pump Testing Methods. Cavitation and Net Positive Suction Head. Dimensional Analysis of Pumps. Specific Speed and Pump Types. Piping System Design Practices. Fans and Fan Performance. Summary. Show and Tell. Problems. Group Problems. 7. SOME HEAT TRANSFER FUNDAMENTALS. Conduction of Heat Through a Plane Wall. Conduction of Heat Through a Cylindrical Wall. Convection Heat Transfer-The General Problem. Convection Heat Transfer Problem: Formulation and Solution. Optimum Thickness of Insulation. Summary. Problems. 8. DOUBLE-PIPE HEAT EXCHANGERS. The Double-Pipe Heat Exchanger. Analysis of Double-Pipe Heat Exchangers. Effectiveness-NTU Analysis. Double-Pipe Heat Exchanger Design Considerations. Summary. Show and Tell. Problems. 9. SHELL-AND-TUBE HEAT EXCHANGERS. The Shell-and-Tube Heat Exchangers. Analysis of Shell-and-Tube Exchangers. Effectiveness-NTU Analysis. Increased Heat Recovery in Shell-and-Tube Heat Exchangers. Shell-and-Tube Heat Exchanger Design Considerations. Optimum Water Outlet Temperature Analysis. Show and Tell. Problems. 10. PLATE-AND-FRAME HEAT EXCHANGERS AND CROSS-FLOW HEAT EXCHANGERS. The Plate-and-Frame Heat Exchanger. Analysis of Plate-and-Frame Heat Exchangers. Cross-Flow Heat Exchangers. Summary. Show and Tell. Problems. 11. PROJECT DESCRIPTIONS.