Heat exchanger is the equipment which is used to reduce temperature of one process fluid, which is desired to cool, by transferring heat to another fluid which is desired to heat with or without inter-mixing the fluid or changing the physical state of the fluid. There are various causes by which Heat exchanger may fail. As they are used at wide range of temperatures hence there is possibility that crack may induce in it and can cause catastrophic failure. Heat exchanger may fail by corrosion of tubes. Vibrations and fatigue are the examples of most dangerous causes that can cause failure. The study of ‘Failure analysis of Shell and tube Heat Exchangers’ will help to understand methods to analyze various types of failure in Shell and tube Heat Exchangers .
Chapter 1 deals with the introductory aspects of Heat Exchangers and its various types. Various operations performed by Heat Exchangers and types of services in which Heat Exchangers are used are also explained in this chapter. The common failures of Heat Exchangers are described in Chapter 2. It includes maintenance of Heat Exchangers and Fouling in Heat Exchangers. Also it describes types of failure such as Stress Corrosion cracking, wear failure, creep in metals and stress rupture. It also deals with causes of failure in Heat Exchangers such as vibration, tube breaking, unexpected wall thinning of Heat Exchangers tubes, fracture in weld portion and tube bending. There are various methods of failure analysis of Heat Exchangers. It includes failure analysis based on Thermodynamics point of view, based on fracture mechanics point of view, vibration analysis, optimization of design, and reliability of design. All these aspects are included in chapter 3. The remedies for failures and conclusions on design improvement of Heat Exchangers in order to minimize chances of failures with improved reliability are described in chapter 4.
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