Chapter 1
Personnel and Requirements


The heat exchanger engineer's work includes selecting equipment for numerous kinds of applications or to accommodate various conditions:

1. For new installations, the task is to select some basic equipment to provide heating or cooling. In this instance, the engineer chooses among shell-and-tube units, air coolers, double-pipe units, plate exchangers, and other designs.

2. The exchanger's size may have to be increased to accommodate a plant expansion. New units in series or parallel may be needed to meet the new conditions. Other options are:

a. Replace a shell-and-tube bundle with another having a different size tube, bare or finned, on a new spacing. This usually requires a redesign of tube-side passes.

b. Furnish new bundles using a different fin material, height, and spacing.

c. Increase the number of plates in plate exchangers.

d. Add double-pipe units in series or parallel or change their elements.

  • 1.1 The Selection of Exchangers
  • 1.2 Personnel Involved in Identifying Requirements
  • 1.3 Requirements by Application
  • 1.4 Problems Due to a Missing Requirement
  • 1.5 Requirements That Define What Is and What Is Not Wanted
  • 1.6 Requirements for Fluid Properties
  • 1.7 Summary of Problem Areas
  • 1.8 Cleaning and Fouling
  • 1.9 Contract Requirements between Seller and Buyer

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